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LC-90LE740X
SERVICE MANUAL
No. SY2A4LC90LE74
LCD COLOR TELEVISION
MODEL
LC-90LE740X
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.
CONTENTS
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY PRECAUTION ............................................................i
PRECAUTIONS FOR USING LEAD-FREE
SOLDER ............................................................ii
OUTLINE
MAJOR SERVICE PARTS ................................ iii
CHAPTER 1. SPECIFICATIONS
[1] SPECIFICATIONS ......................................... 1-1
CHAPTER 2. OPERATION MANUAL
[1] OPERATION MANUAL .................................. 2-1
CHAPTER 3. DIMENSIONS
[1] DIMENSIONS ................................................ 3-1
CHAPTER 4. REMOVING OF MAJOR PARTS
[1] REMOVING OF MAJOR PARTS ................... 4-1
[2] The location putting on the heat measure
sheet .............................................................. 4-6
[3] Precautions for assembly............................... 4-7
CHAPTER 5. ADJUSTMENT
[1] ADJUSTMENT PROCEDURE ......................5-1
[2] PUBLIC MODE SETTING PROCEDURE
......5-14
[3] USB Clone Specifications............................5-21
CHAPTER 6. TROUBLESHOOTING TABLE
[1] Failure diagnosis by LED in front of cabinet
........6-1
[2] LED flashing specification at the time of an
error (Center icon LED used) ........................6-1
[3] TROUBLESHOOTING TABLE ......................6-5
CHAPTER 7. MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS .........................7-1
CHAPTER 8. OVERALL WIRING/SYSTEM BLOCK
DIAGRAM
[1] OVERALL WIRING DIAGRAM ......................8-1
[2] SYSTEM BLOCK DIAGRAM .........................8-2
Parts Guide
Parts marked with "
" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
LC-90LE740X
LC-90LE740X
SAFETY PRECAUTION
Service Manual
IMPORTANT SERVICE SAFETY PRECAUTION
Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the
servicing guidelines which follow:
„WARNING
•
Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet
parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground.
•
Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor.
•
Connect the resistor connection to all exposed metal parts having a
return to the chassis (antenna, metal cabinet, screw heads, knobs
and control shafts, escutcheon, etc.) and measure the AC voltage
drop across the resistor.
1. For continued safety, no modification of any circuit should be
attempted.
2. Disconnect AC power before servicing.
C A U T I O N : F O R C O N T I N U E D PROTECTION
AGAINST A RISK OF FIRE REPLACE ONLY WITH
SAME TYPE FUSE.
F7001 (250V 6.3A)
All checks must be repeated with the AC cord plug connection
reversed. (If necessary, a nonpolarized adaptor plug must be used
only for the purpose of completing these checks.)
Any reading of 0.75 Vrms (this corresponds to 0.5 mA rms AC.) or
more is excessive and indicates a potential shock hazard which
must be corrected before returning the monitor to the owner.
„BEFORE RETURNING THE RECEIVER (Fire &
Shock Hazard)
DVM
AC SCALE
Before returning the receiver to the user, perform the following
safety checks:
1.5k ohm
10W
3. Inspect all lead dress to make certain that leads are not pinched,
and check that hardware is not lodged between the chassis and
other metal parts in the receiver.
4. Inspect all protective devices such as non-metallic control knobs,
insulation materials, cabinet backs, adjustment and compartment
covers or shields, isolation resistor-capacitor networks, mechanical
insulators, etc.
0.15 µF
TEST PROBE
5. To be sure that no shock hazard exists, check for leakage current
in the following manner.
•
Plug the AC cord directly into a 110-240 volt AC outlet.
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
SAFETY NOTICE
Many electrical and mechanical parts in LCD color television have
special safety-related characteristics.
For continued protection, replacement parts must be identical to those
used in the original circuit.
These characteristics are often not evident from visual inspection, nor
can protection afforded by them be necessarily increased by using
replacement components rated for higher voltage, wattage, etc.
The use of a substitute replacement parts which do not have the same
safety characteristics as the factory recommended replacement parts
shown in this service manual, may create shock, fire or other hazards.
Replacement parts which have these special safety characteristics are
identified in this manual; electrical components having such features
are identified by "
" and shaded areas in the Replacement Parts List
and Schematic Diagrams.
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
i
LC-90LE740X
PRECAUTIONS FOR USING LEAD-FREE SOLDER
„Employing lead-free solder
•
“PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The
alphabetical character following LF shows the type of lead-free solder.
Example:
Indicates lead-free solder of tin, silver and copper.
Indicates lead-free solder of tin, silver and copper.
„Using lead-free wire solder
•
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 °C, we recommend you to use a dedicated soldering
bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.
„Soldering
•
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 °C which is higher than the conventional lead solder by 40 °C, and as it has poor
solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be
peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the
steady soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as
required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
•
Be careful when replacing parts with polarity indication on the PWB silk.
Lead-free wire solder for servicing
PARTS CODE
ZHNDAi123250E
ZHNDAi126500E
ZHNDAi12801KE
PRICE
RANK
BL
BK
BM
PART
DELIVERY
J
J
J
DESCRIPTION
φ0.3mm 250g (1roll)
φ0.6mm 500g (1roll)
φ1.0mm 1kg (1roll)
ii
LC-90LE740X
LC-90LE740X
OUTLINE
Service Manual
MAJOR SERVICE PARTS
„PWB Unit
No.
N
N
N
N
N
N
N
PARTS CODE
DKEYMF953FMJ6
DUNTKF800FMF8
DUNTKF975FM18
DUNTKG014FMF7
DUNTKG015FMF7
DUNTKG017FMF7
RUNTKB096WJQZ
DESCRIPTION
MAIN Unit
KEY Unit
LCD CONTROL Unit
EMBLEM Unit
R/C LED Unit
3D IR Unit
POWER/DRIVE UNIT
NOTE: *1 Replace MAIN PWB Units (DKEYMF953FMJ6) in case of IC3104 failure.
„OTHER Unit
No.
N
PARTS CODE
B3KUV740X
DESCRIPTION
90" LCD PANEL MODULE Unit (R1LK900D3GW10V)
„IC For Exclusive Use Of The Service
No.
IC2004
PARTS CODE
RH-iXD241WJNQQ
IC (Monitor Microprocessor)
DESCRIPTION
Q’ty
1
DESCRIPTION
Connecting Cord L=1000mm 80pins, LCD Control to LCD Panel
Connecting Cord L=1200mm 24-24-4pins, POWER to LCD Control/POWER to Main (PD)
Q’ty
2
1
„Service Jigs
No.
N
N
PARTS CODE
QCNW-C222WJQZ
QCNW-M539WJQZ
iii
LC-90LE740X
CHAPTER 1. SPECIFICATIONS
LC-90LE740X
Service Manual
[1] SPECIFICATIONS
1–1
LC-90LE740X
CHAPTER 2. OPERATION MANUAL
LC-90LE740X
Service Manual
[1] OPERATION MANUAL
2–1
LC-90LE740X
2–2
LC-90LE740X
2–3
LC-90LE740X
2–4
LC-90LE740X
CHAPTER 3. DIMENSIONS
LC-90LE740X
Service Manual
[1] DIMENSIONS
3–1
LC-90LE740X
Service
CHAPTER 4. REMOVING OF MAJOR PARTS
LC-90LE740X
Manual
[1] REMOVING OF MAJOR PARTS
1. Removing of Stand Unit and Rear Cabinet Ass’y.
1. Remove the 4 lock screws (1) and detach the Stand Unit (2).
2. Remove the 3 lock screws (3), 20 lock screws (4), 10 lock screws (5) and detach the Rear Cabinet (L) Ass’y (6), Rear Cabinet (R) Ass’y (7).
3. Remove the 5 lock screws (8), 8 lock screws (9), 2 lock screws (10), 2 angles (11) and detach the Rear Cabinet (C) Ass’y (12).
4
9
1
7
8
Stand
Unit
2
12
5
Rear Cabinet (R)
Ass'y
Rear Cabinet (C)
Ass'y
10 11
3
6
4
4–1
Rear Cabinet (L)
Ass'y
LC-90LE740X
2. Removing of Speaker (L/R), Speaker (Woofer) and KEY Unit.
1. Disconnect the SP wire.
2. Remove the 2 lock screws (1) and detach the Speaker (L) (2), Speaker (R) (3).
3. Disconnect the RC wire.
4. Detach the KEY Unit Ass’y (4).
5. Disconnect the KM wire.
6. Remove the 2 lock screws (5) and detach the Key Button (6) from Key Cover (8).
7. Detach the KEY Unit (7) from Key Button (6).
8. Disconnect the SB wire.
9. Detach the Speaker (Woofer) (9).
MAIN Unit
[SB]
4 KEY Unit Ass'y
[SP]
5
[RC]
7 KEY Unit
[KM]
9
Speaker
(Woofer)
1
6 Key Button
[SP]
[SB]
3
Speaker (R)
8 Key Cover
Speaker (L) 2
4–2
1
LC-90LE740X
3. Removing of Connectors, 90” LCD Panel Module Unit Ass’y.
1. Disconnect the following connectors from the MAIN Unit. (LV, PD)
2. Disconnect the following connectors from the POWER/DRIVE Unit. (L1, L2, PD)
3. Disconnect the following connectors from the LCD Control Unit. (PL, LV)
4. Remove the 16 lock screws (1) and detach the 16 Module Fix Angles (2)
5. Remove the 7 Hooks and detach the 90” LCD Panel Module Unit Ass’y (3).
6. Detach the 2 Bottom cover (4).
Hook
Hook
1
2
Module Fix Angle
2
Module
Fix
Angle
[L1] [L2]
2
[PD]
[PL]
1
[LV]
Module
Fix
Angle
1
POWER/DRIVE
Unit
LCD
Control
Unit
Bottom cover 4
MAIN Unit
[PD]
[LV]
4–3
MAIN Unit
3 90" LCD Panel
Module
Unit Ass'y
LC-90LE740X
4. Removing of LCD CONTROL Unit, MAIN Unit, POWER/DRIVE Unit.
1. Remove the 5 lock screws (1) and detach the Shield (MAIN) (2).
2. Remove the 3 lock screws (3) and detach the MAIN Unit (4) and Terminal Angle (Bottom) (5).
3. Remove the 6 lock screws (6) and detach the POWER/DRIVE Unit (7).
4. Remove the 4 lock screws (8) and detach the 2 Speaker Holders (9).
90" LCD Panel
Module Unit
Speaker
Holder
9
9 Speaker
Holder
8
4 MAIN Unit
8
3
7
POWER/DRIVE
Unit
5 Terminal
Angle
(Bottom)
6
1
4–4
2 Shield
(MAIN)
LC-90LE740X
5. Removing of R/C LED Unit, EMBLEM Unit, 3D IR Unit.
1. Detach the R/C LED Unit (1).
2. Disconnect the RA wire.
3. Detach the EMBLEM Unit (2).
4. Disconnect the CI wire.
5. Detach 3D IR Unit (3).
6. Disconnect the IR wire.
Decoration Frame Ass'y
[IR]
3 3D IR Unit
[CI]
2 EMBLEM
Unit
4–5
[RA]
1 R/C LED Unit
LC-90LE740X
[2] The location putting on the heat measure sheet
1. MAIN PWB Unit
PSPAZC871WJKZ
2. LCD Control Unit
PSPAZC854WJKZ
4–6
LC-90LE740X
[3] Precautions for assembly
1. Points to be checked and precautions when servicing the unit
Mount the main PWB Ass’y on the backlight chassis and check that the EMI-prevention parts are not peeled and twisted from the access holes. (The
EMI-prevention parts, conductive nonwoven fabric gaskets, must be seen from the access holes.)
[Countermeasure]
Attach the conductive nonwoven fabric gaskets on the shielded case on the main PWB.
687
State where the main PWB and shielded case are assembled
Access hole
Access hole
4–7
LC-90LE740X
The following is a drawing mounting the main PWB Ass’y on the backlight chassis. (The parts indicated by -> are the access holes for confirmation.)
(Main PWB Ass’y => State where the shielded case and RF terminal angle are mounted on the main PWB)
4–8
LC-90LE740X
CHAPTER 5. ADJUSTMENT
LC-90LE740X
Service Manual
[1] ADJUSTMENT PROCEDURE
Main unit supplied as service unit was adjusted on some item.
However, W/B adj is not finished because it needs to be done by final set condition. So the main unit is in the adjustment condition when it is supplied
and K mark is shown up in display when you use it. After finishing Factory setting, K -mark disappear so please do it as following ADJUSTMENT
PROCUDURE.
The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is
required due to part replacement, make an adjustment according to the following procedure.
1. After replacement of any PWB unit and/or IC for repair, please note the following.
• When replacing the following units, make sure to prepare the new units loaded with updated software.
MAIN Unit:
DKEYMF953FMJ6
• When replacing the LCD control PWB, perform the VCOM adjustment.
2. Upgrading of each microprocessor software
CAUTION: Never “POWER OFF” the unit when software upgrade is ongoing.
Otherwise the system may be damaged beyond recovery.
2.1. Software version upgrade
The model employs the following software.
•
Main software (please use a software version after LEON_LE740X_xxx.USB).
•
Monitor microprocessor software (please use a software version after LEONSUBxxx.SMB.)
The main software, monitor microprocessor software can be upgraded by using a general-purpose USB Memory.
The followings are the procedures for upgrading, explained separately for the main software, monitor microprocessor software.
2.2. Main software version upgrade
2.2.1 Get ready before you start
•
USB Memory of 128MB or higher capacity.
•
PC running on Windows 98/98SE/ME/2000/XP operating system.
•
USB Memory reader/writer or PC with a USB port.
•
The file system of a USB memory is FAT. (FAT32 supports)
•
Use the USB memory without other functions. (lock and memory reader...etc)
2.2.2 Preparations
To upgrade the main software, it is necessary to get ready the USB Memory for version upgrade before you start.
Follow the steps below and create the USB Memory for version upgrade.
1. Copy the file LEON_LE740X_xxx.USB for version upgrade to the root directory (folder) of the USB Memory.
NOTE: In the USB Memory drive, do not store other folders or unrelated files, or more than one file for version upgrade.
Now the USB Memory for version upgrade is ready.
5–1
LC-90LE740X
2.2.3 How to upgrade the software
1. Unplug the AC cord.
2. Insert the USB Memory for version upgrade into USB1.
3. Plug in the AC cord with power button pressed down.
4. After 5 seconds, unpress the power button.
5. After the unit startup, the system upgrade screen as shown below within 20-40 seconds.
Software Update
90LE740X
MAIN
50%
SUB MICOM
NO DATA
PANEL EEPROM
NO DATA
3D IR MICOM
101X1207302
MAIN Version
SUB MICOM Version
㧙㧙㧙㧙㧙
PANEL EEPROM
㧙㧙㧙㧙
3D IR MICOM Version
6. Even a single failure in the process will trigger the upgrade failure screen.
Software Update
90LE740X
UPGRADE FAILURE
MAIN
Project ID
SUB MICOM
NO DATA
PANEL EEPROM
NO DATA
3D IR MICOM
MAIN Version
㧙㧙㧙㧙㧙
SUB MICOM Version
㧙㧙㧙㧙㧙
PANEL EEPROM
㧙㧙㧙㧙
3D IR MICOM Version
NOTE: In the event of a failure, repeat the upgrade process. If the process repeatedly fails, it is likely that the hardware need fixing.
7. Upon completion of the whole process, the upgrade success screen as shown below appears. You can check the new software version on this
screen. The version information appears after the upgrade is complete.
Software Update
90LE740X
UPGRADE SUCCESS
MAIN
100%
SUB MICOM
NO DATA
PANEL EEPROM
NO DATA
3D IR MICOM
101X1207302
MAIN Version
SUB MICOM Version
PANEL EEPROM
㧙㧙㧙㧙㧙
㧙㧙㧙㧙
3D IR MICOM Version
8. Unplug the AC cord and remove the USB Memory for version upgrade.
9. Now the software version upgrade is complete.
NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the main
software version information.
5–2
LC-90LE740X
2.3. Monitor microprocessor software version upgrade
Create the USB memory for monitor microprocessor software version upgrade in the same manner as explained in the “Main software version
upgrade”.
Copy the file LEON_LE740X_xxx.USB and LEONSUBxxx.SMB. (named temporarily) for monitor microprocessor software version upgrade to the
USB memory.
2.3.1 How to upgrade the software
1. Unplug the AC cord.
2. Insert the USB Memory for version upgrade into USB1.
3. Plug in the AC cord with power button pressed down.
4. After 5 seconds, unpress the power button.
CAUTION: •
•
The moment this operation is done, the upgrading of the monitor microprocessor software starts. While the upgrade is ongoing, never
power off the unit. Otherwise the upgrade will fail and the system may be serious damaged beyond recovery (inability to start).
After the monitor microprocessor software is upgraded, also perform the 'Industry Init'.
5. After the unit startup, the upgrade starts. The power led will blink continuously. Also, an upgrade screen will be shown during a minor upgrade.
Software Update
90LE740X
MAIN
NO DATA
SUB MICOM
50%
PANEL EEPROM
NO DATA
3D IR MICOM
MAIN Version
㧙㧙㧙㧙㧙
SUB MICOM Version
0.820
PANEL EEPROM
㧙㧙㧙㧙
3D IR MICOM Version
6. If the upgrade fails, power led will stop blinking. Also, the upgrade failure screen will be shown if upgrade screen was shown at 5.
Software Update
90LE740X
UPGRADE FAILURE
MAIN
NO DATA
SUB MICOM
SAME VERSION
PANEL EEPROM
NO DATA
3D IR MICOM
MAIN Version
㧙㧙㧙㧙㧙
SUB MICOM Version
㧙㧙㧙㧙㧙
PANEL EEPROM
㧙㧙㧙㧙
3D IR MICOM Version
NOTE: In the event of a transient failure, upgrade will be automatically retried up to three times. If the process repeatedly fails, hardware may be the
cause.
7. The upgrade success screen will be shown if upgrade screen was shown at 5.
Software Update
90LE740X
UPGRADE SUCCESS
MAIN
NO DATA
SUB MICOM
100%
PANEL EEPROM
NO DATA
3D IR MICOM
MAIN Version
㧙㧙㧙㧙㧙
SUB MICOM Version
0.820
PANEL EEPROM
㧙㧙㧙㧙
3D IR MICOM Version
8. Unplug the AC cord and remove the USB Memory for version upgrade.
9. Now the software version upgrade is complete.
NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the monitor microprocessor software version information and panel size information.
5–3
LC-90LE740X
3. Entering and exiting the adjustment process mode
1) Before entering the adjustment process mode, the AV position RESET in the video adjustment menu.
2) While holding down the “VOL(-)” and “INPUT” keys at a time, plug in the AC cord of the main unit to turn on the power.
The letter “<K>” appears on the screen.
3) Next, hold down the “VOL(-)” and “CH(
(The “VOL (—)” and “CH (
)” keys at a time.
)” keys should be pressed and held until the display appears.)
Multiple lines of blue characters appearing on the display indicate that the unit is now in the adjustment process mode.
When you fail to enter the adjustment process mode (the display is the same as normal startup), retry the procedure.
4) To exit the adjustment process mode after the adjustment is done, unplug the AC cord from the outlet to make a forced shutdown. (When the
power was turned off with the remote controller, once unplug the AC cord and plug it again. In this case, wait 10 seconds or so before plugging.)
CAUTION: Use due care in handling the information described here lest your users should know how to enter the adjustment process mode. If the
settings are tampered in this mode, unrecoverable system damage may result.
4. Remote controller key operation and description of display in adjustment process mode
1) Key operation
Remote controller key
CH (
/
)
VOL (+/–)
Cursor (UP/DOWN)
Cursor (LEFT/RIGHT)
INPUT
ENTER
Main unit key
CH (
/
)
VOL (+/–)
—————
—————
—————
—————
Function
Moving an item (line) by one (UP/DOWN)
Changing a selected item setting (+1/ –1)
Turing a page (PREVIOUS/NEXT)
Changing a selected line setting (+10/ –10)
Input switching (toggle switching)
Executing a function
*Input mode is switched automatically when relevant adjustment is started so far as the necessary input signal is available.
2) Description of display
(2) Current selected input
(3) Current color system
(5) LCD Panel size/Speaker type
(4) Inducing display
(1) Current page/
Total pages
1/20
DTV
MAIN Version
AUTO
USA
90E_LE740X
1.00 (X 2012/XX/XX)
BOOT Version
PRAHA 100
MonitorVersion
1.00
T-CON Version / LED CON Version
XXXXXXX / XX
NET TV KEY / MAC
- - - - / XX - XX - XX - XX - XX - XX
CI+INFO/SECURE BOOT
- - - - / No
(7) Parameters
MARLIN
FRC Version
IR Micom Version
LAMP ERROR
0
MONITOR ERR CAUSE
1) XXXXX
2) XXXXX
3) XXXXX
4) XXXXX
NORMAL STANDBY CAUSE
0
ERROR STANDBY CAUSE
0
0
0
0
0
(6) Item name
No.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Description
Present page/number of total pages
Input that has been selected now
Present colour system
Inducing display
Inch setting and Model name display
Item name
Parameter
Display specification
2char/2char Decimal Number mark.
DTV/TUNER/INPUT1/INPUT2/INPUT3/INPUT4/INPUT5/INPUT6/INPUT7
AUTO/N358/N443/PAL/SECAM/480i/580i/1080i/50 etc. ⋅⋅⋅
AUSTRALIA/NEWZEALAND/GENERAL
Inch setting and Model name display
Max. 30 char
Max. 60 char
5–4
LC-90LE740X
5. List of adjustment process mode menu
The character string in brackets [ ] will appear as a page title in the adjustment process menu header.
Page
1/20
Line
Item
Description
1xxx(xxxxx)
xxxxxxx
xxxxxxx
xxxxxxxx/xxxx
xxx/xxxx
xxxxx/NO
Remarks (adjustment detail, etc.)
1
2
3
4
5
6
7
8
9
10
11
MAIN Version
BOOT Version
Monitor Version
T-CON Version / LED CON Version
NET TV KEY / MAC
CI + INFO / SECURE BOOT
MARLIN
FRC Version
IR Micom Version
LAMP ERROR
MONITOR ERR CAUSE
12
NORMAL STANDBY CAUSE
13
ERROR STANDBY CAUSE
1
2
INDUSTRY INIT
INDUSTRY INIT (-Public)
Enter
OFF
3
4
5
6
7
8
9
10
11
12
13
PUBLIC MODE
Center Acutime
RESET
Backlight Acutime
RESET
LAMP ERROR RESET
ADJ PARAM SET
VIC XPOS
VIC YPOS
VIC SIGNAL TYPE
VIC READ
OFF
—
OFF
—
OFF
OFF
Enter
0
0
MAIN
OFF
1
2
3
4
5
6
7
8
9
10
11
TUNER ADJ
PAL+TUNER ADJ
TUNER ADJ (CA-8CH)
PAL+TUNER ADJ (CA-8CH)
TUNER ADJ (SMPTE)
PAL+TUNER ADJ (SMPTE)
TUNER ADJ (SMPTE CH57)
PAL+TUNER ADJ (SMPTE CH57)
TUNER CONTRAST A_GAIN
TUNER CONTRAST D_GAIN
TUNER CONTRAST OFFSET
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter
14
2048
256
TUNER auto adjustment execution
PAL TUNER auto adjustment execution
TUNER auto adjustment execution (CA-8CH)
PAL TUNER auto adjustment execution (CA-8CH)
TUNER auto adjustment execution (SMPTE)
PAL TUNER auto adjustment execution (SMPTE)
TUNER auto adjustment execution (SMPTE CH57)
PAL TUNER auto adjustment execution (SMPTE CH57)
TUNER signal level adjustment
TUNER signal level adjustment
TUNER signal level adjustment
1
2
3
4
5
6
7
8
9
10
11
12
PAL ADJ
SECAM ADJ
N358 ADJ
PAL CONTRAST A_GAIN
PAL CONTRAST D_GAIN
PAL CONTRAST OFFSET
SECAM CONTRAST A_GAIN
SECAM CONTRAST D_GAIN
SECAM CONTRAST OFFSET
N358 CONTRAST A_GAIN
N358 CONTRAST D_GAIN
N358 CONTRAST OFFSET
Enter
Enter
Enter
14
2048
256
14
2048
256
14
2048
256
PAL adjustment
SECAM adjustment
N358 adjustment
PAL contrast adjustment
PAL contrast adjustment
PAL contrast adjustment
SECAM contrast adjustment
SECAM contrast adjustment
SECAM contrast adjustment
N358 contrast adjustment
N358 contrast adjustment
N358 contrast adjustment
0
1) xxxxxx 2) xxxxxx
3) xxxxxx 4) xxxxxx
0
0000
Main software version
BOOT Version
Monitor software version
T-CON/H.264 Version
MAC Address
CI + Key Information / SECURE BOOT
Number of termination due to lamp error.
Last error standby cause.
Situsation that became standby at the end.
(Excluding the error) Refer to 7. STANDBY CAUSE FUNCTIONS.
Error standby cause. Refer to 7. STANDBY CAUSE FUNCTIONS.
2/20
Initialization to factory settings execution.
Initialization to factory settings execution.
(Public mode is excluded)
Public mode ON/OFF setting
Main operating hours.
Main operating hours reset.
Backlight operating hours.
Backlight operating hours reset.
Lamp error reset.
ADJ PARAM SET
X-coordinate setting for VIC READ
Y-coordinate setting for VIC READ
Signal type setting for VIC READ
Picture level acquisition function
(Level appears in green on the upper right)
3/20
4/20
5–5
LC-90LE740X
Page
5/20
Line
Item
Description
Remarks (adjustment detail, etc.)
1
2
3
4
5
HDMI CEC TEST
HDMI EDID WRITE
INSPECT USB TERM
MONIDATA READ [TEMP/OPC]
CAUSE RESET
Enter
HDMI CEC test
Enter
HDMI EDID WRITING
PORT ALL : - - - - - - Reading inspection of USB memory terminal
OFF
MONITOR Temperature/OPC Acquisition tool.
Enter
Reset of standby cause
1
2
3
4
5
6
7
8
COMP15K ALL ADJ
COMP15K MAIN Y GAIN
COMP15K MAIN CB GAIN
COMP15K MAIN CR GAIN
COMP15K Y OFFSET
COMP15K CB OFFSET
COMP15K CR OFFSET
COMP15K A_CLAMP
Enter
140
150
150
64
128
128
0
Component 15K picture level adjustment
Y GAIN adjustment value
Cb GAIN adjustment value
Cr GAIN adjustment value
Y OFFSET adjustment value
CB OFFSET adjustment value
CR OFFSET adjustment value
1
2
3
4
5
6
7
8
HDTV ADJ
HDTV Y GAIN
HDTV CB GAIN
HDTV CR GAIN
HDTV Y OFFSET
HDTV CB OFFSET
HDTV CR OFFSET
HDTV A_CLAMP
Enter
140
150
150
64
128
128
0
HDTV video level adjustment
HDTV Y GAIN adjustment value
HDTV Cb GAIN adjustment value
HDTV Cr GAIN adjustment value
HDTV Y OFFSET adjustment value
HDTV CB OFFSET adjustment value
HDTV CR OFFSET adjustment value
1
2
3
4
5
6
7
8
ANALOG PC ADJ
R OFFSET
G OFFSET
B OFFSET
R GAIN
G GAIN
B GAIN
RGB A_CLAMP
Enter
64
64
64
44
44
44
0
DVI ANALOG video level adjustment
R CUTOFF adjustment value
G CUTOFF adjustment value
B CUTOFF adjustment value
R DRIVE adjustment value
G DRIVE adjustment value
B DRIVE adjustment value
1
VCOM ADJ
1
2
3
4
5
DDR2 CHECK
BA[1:0]
ADDR[13:0]
DQ[15:0]
FRC ON/OFF
1
2
3
4
5
6
R GAIN (LO)
G GAIN (LO)
B GAIN (LO)
R GAIN (HI)
G GAIN (HI)
B GAIN (HI)
1
2
3
4
5
MONITOR TIME OUT
MONITOR MAX TEMP
MONITOR EEP READ/WRITE
MONITOR EEP ADR
MONITOR EEP DATA
1
2
3
4
5
LCD TEST PATTERN
LCD TEST PATTERN 1
LCD TEST PATTERN 2
LCD TEST PATTERN 3
LCD TEST PATTERN 4
6/20
7/20
8/20
9/20
64
Common bias adjustment
10/20
Enter
0x00
0x0000
0x0000
Enter
Execute DDR check
Execute FRC ON/OFF
11/20
0
0
0
0
0
0
R DRIVE adjustment value
G DRIVE adjustment value
B DRIVE adjustment value
R DRIVE adjustment value
G DRIVE adjustment value
B DRIVE adjustment value
12/20
ON
59
WRITE
0x 0
0x 0
Monitor and the main communication time-out setting
MONITOR MAX temperature setting
MONITOR EEPROM READ/WRITE Setting/execution
MONITOR EEPROM arbitrary addressing
MONITOR EEPROM arbitrary data specification
13/20
NOT SUPPORT
OFF
NOT SUPPORT
NOT SUPPORT
5–6
Pattern with built-in LCD controler display
LC-90LE740X
Page
14/20
Line
Item
1
2
3
4
T-CON VERSION EXT.1
T-CON VERSION EXT.2
T-CON VERSION EXT.3
T-CON VERSION EXT.4
1
2
3
4
3D HDMI FPGA Version
2D→3D FPGA Version
3D LED BRIGHTNESS
3D IR EMITTER CONTROL
1
2
3
4
5
6
7
8
CROSS TALK ADJ MODE
CROSS TALK TH1
CROSS TALK TH2
CROSS TALK TH3
CROSS TALK TH4
CROSS TALK GAIN1
CROSS TALK GAIN2
CROSS TALK GAIN3
1
2
3
4
5
6
7
WIFI SSID 2.4GHz
WIFI SSID 5GHz
WIFI RSSI 2.4GHz
WIFI RSSI 5GHz
WIFI TIME 2.4GHz
WIFI TIME 5GHz
WIFI RSSI TEST
8
WIFI RSSI RESULT
1
2
3
READ/WRITE
SLAVE/ADDRESS
REGISTER ADDRESS
4
WRITE DATA
5
READ DATA
1
2
3
4
5
6
ERROR STANDBY CAUSE 1
ERROR STANDBY CAUSE 2
ERROR STANDBY CAUSE 3
ERROR STANDBY CAUSE 4
ERROR STANDBY CAUSE 5
STANDBY CAUSE RESET
1
2
3
4
5
6
7
8
9
10
11
12
13
14
EEP SAVE
EEP RECOVER
MONITOR ERROR CAUSE RESET
MODEL NAME
PANEL SIZE
VER UP FLAG ENABLE
PANEL LIMIT
PANEL RANGE LIMIT
SHORT CHECK MODE
SHORT CHECK CURRENT
PRODUCT EEP ADR
PRODUCT EEP DATA
PRODUCT FACTORY
TEST NETWORK UPDATE
Description
Remarks (adjustment detail, etc.)
15/20
90
ON
16/20
OFF
17/20
AF00
AF50
-50
-50
10
10
2.4GHz and 5GHz
RSSI(Passive)
2.4GHz ERR - 1,
5GHz ERR - 1
18/20
READ
SLAVE0
0x 0
0x 0
0x 0
0x 0
0x 0
0x 0
Read/Write
Slave address
Register address
Writing data
Reading data
19/20
NO RECORD
NO RECORD
NO RECORD
NO RECORD
NO RECORD
OFF
ERROR STANDBY CAUSE
Reset stand by cause.
20/20
OFF
OFF
OFF
LE840X
60
Enter
ON
230
Enter
60
0x 0
0x 0
0x 0
NO
5–7
Writing setting values to EEPROM.
Reading setting values from EEPROM.
Reset of monitor error cause
MODEL NAME
Panel size setting.
Check LED Back Light
Don't touch when serving (for producer of factory)
Don't touch when serving (for producer of factory)
Don't touch when serving (for producer of factory)
Don't touch when serving (for producer of factory)
LC-90LE740X
6. Special features
*
STANDBY CAUSE (Page 1/20)
Display of a cause (code) of the last standby
The cause of the last standby is recorded in EEPROM whenever possible.
Checking this code will be useful in finding a problem when you repair the troubled set.
*
EEP SAVE (Page 20/20)
Storage of EEP adjustment value
*
EEP RECOVER (Page 20/20)
Retrieval of EEP adjustment value from storage area
7. STANDBY CAUSE FUNCTIONS
This model is equipped with a STANDBY CAUSE FUNCTIONS which stores the cause of why the unit is turned off and displays it on adjustment process mode.
1. NORMAL STANDBY CAUSE
ERROR CODE here indicates cause of standby in normal operation or Function of the Unit.
No display when the unit is turned off with R/C.
Only the latest cause is indicated.
2. ERROR STANDBY CAUSE
ERROR CODE here indicates cause of Error in the unit.
It also indicates accumulated operating times of the unit.
The last five histories are displayed.
1)-5) five histories 1) is the latest.
When there is no error, error code is ‘0’ and no characters appear.
3. MONITOR ERROR CAUSE
When the monitor micom detects an error, ERROR CODE is displayed.
The number of flashing Power LED and OPC LED indicates location of error detected.
This number stores the latest four contents of the error. ‘0’ is displayed when no error.
• NORMAL STANDBY CAUSE
Display Code
2
3
6
8
Indication
NO_OPERT
NO_SIGNA
SLEEP_TM
OFF_232C
Description
in the cause of “no operation off”
in the cause of “no signal off”
in the cause of “SLEEP timer”
in the cause of command by RS-232C
• ERROR STANDBY CAUSE
Display Code
1A
1C
22
48
50
54
Indication
E_MONITR
E_CVICBT
E_TCNERR
E_MRESET
E_TCNF_S
E_TCON_E
Description
in the cause of monitor trouble detected
in the cause of driver boot error
in the cause of software abmormality of LCD controller
in the cause of failure of resetting menu settings (Initial Setup - Reset)
in the cause of TCON FPGAStatus error
in the cause of fatal error by TCON hanging up
• MONITOR ERROR CAUSE
Display
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
Initial Communication Error 2
Initial Communication Error 3
Initial Communication Error 4
Initial Communication Error 5
Initial Communication Error 6
Initial Communication Error 7
Initial Communication Error 8
Initial Communication Error 9
Communication Error A
Communication Error B
Communication Error C
Communication Error D
Communication Error E
Communication Error F
Error Reason
Cannot receive initial communication from main CPU
Receive initial communication only
To the communication setting reception
To the initialization completion reception
To the notice of version reception
To the notice of start information reception
To the start information answer reception
To the time-out setting reception
Request Time-out
Restart Time-out
End sequence Time-out
Reserve start Time-out when End seqence
Download Start Time-out
Get Time Start Time-out
5–8
LC-90LE740X
Display
11
16
1A
1D
1E
1F
21
23
Communication Error H
LCD Module Error
Other Error 2
Power supply Error1
Power supply Error 2
Power supply Error 3
Power supply Error 5
Other Error 3
Error Reason
Regular communication Time-out
Lamp Error
Monitor Temperature Error
PS_ON(AC_DET) Error
D_POW(DET_13V) Error
D_POW(DET_D3V3) Error
Panel Power Error
Error Standby request from Main CPU
8. Panel size and model setting
1
Adjustment item
Panel size setting
2
Model setting
Adjustment conditions
Page 20/20 of the process adjustment mode.
• To cancel it, turn off the
power by pull out the AC
cord.
Adjustment procedure
1) Use the cursor keys ( / ) and CH keys (
/
) of R/C to select the item
[PANEL SIZE] on the page 20/20.
2) Verify that the panel size is displayed.
3) If the size doesn’t match, select the values of the panel size with the VOL keys
(+/-).
4) After selection in Step 3), press the OK key, and it is completed with OK displayed.
1) Use the cursor keys ( / ) and CH keys (
/
) of R/C to select the item
[MODEL NAME] on the page 20/20.
2) Verify that the Model name is displayed.
3) If the Model name doesn’t match, select the values of the Model name with the
VOL keys (+/-).
4) After selection in Step 3), press the OK key, and it is completed with OK displayed.
Adjustment conditions
Adjustment in the center
position of the panel
Adjustment procedure
1. Enter the process mode using the process adjustment remote control.
2. Select [VCOM ADJ ] using the Channel
/
keys on the remote control.
3. Press the Enter key to check that the pattern for adjustment is displayed.
4. Make adjustment so that the flicker located in the center of the screen is minimized using the Volume +/- keys on the remote control.
5. If the optimum condition is obtained in step 4, press the Enter key to turn off the
pattern.
•
9. LCD Panel Adjustment
1
Adjustment item
Opposite bias adjustment
(LCD module adjustment
item)
CAUTION: * Make adjustment with no ANT signal (since the brightness is
changed by the active backlight).
[Adjustment position]
1/2
1/2
1/2
5–9
1/2
LC-90LE740X
10. Video signal adjustment procedure
The adjustment process mode menu is listed in Section 5.
Signal generator level adjustment check (Adjustment to the specified level)
•
•
•
Composite signal PAL/SECAM
RGB signal
15K component signal (50 Hz)
•
33K component signal (50 Hz)
•
Composite signal NTSC
: 0.7Vp-p ± 0.02Vp-p (Pedestal to white level)
: 0.7Vp-p ± 0.02Vp-p
: Y level
: 0.7Vp-p ± 0.02Vp-p (Pedestal to white level)
: PB, PR level
: 0.7Vp-p ± 0.02Vp-p
: Y level
: 0.7Vp-p ± 0.02Vp-p (Pedestal to white level)
: PB, PR level
: 0.7Vp-p ± 0.02Vp-p
: 0.714Vp-p ± 0.02Vp-p (Pedestal to white level)
10.1. Entering the adjustment process mode
Enter the adjustment process mode according to Section 3.
10.2. PAL signal adjustment
1
Adjustment point
Setting
Adjustment conditions
[Signal]
PAL
Full field colour bar composite
signal
•
Adjustment procedure
Feed the PAL full field colour bar signal (75% colour saturation) to INPUT6
video input.
[VIDEO input signal]
[Terminal]
INPUT6 video input
100% white
2
*
Auto adjustment
performance
Adjustment process
[PAL ADJ]
page 4/20
Black
Bring the cursor on [PAL ADJ] and press [ENTER].
[PAL ADJ OK] appears when finished.
ATTENTION: Please execute [3. TUNER adjustment] afterwards if you adjust [2. PAL signal adjustment] after all adjustments are completed.
10.3. TUNER adjustment
1
Adjustment point
Setting
Adjustment conditions
[Signal]
PAL split field colour Bar
RF signal UV
•
•
Adjustment procedure
Feed the PAL Split Field colour bar signal to TUNER.
Make sure the PAL colour bar pattern has the sync level of 7:3 with the
picture level.
[E-12CH]
[Terminal]
TUNER
100% white
2
Auto adjustment
performance
Adjustment process
[TUNER ADJ]
page 3/20
Bring the cursor on [TUNER ADJ] and press [ENTER].
[TUNER ADJ OK] appears when finished.
5 – 10
LC-90LE740X
10.4. NTSC signal adjustment
1
Adjustment point
Setting
Adjustment conditions
[Signal]
N358
Full field colour Bar Signal
•
Adjustment procedure
Feed the NTSC full field colour bar signal (75% colour saturation) to
INPUT6 video input.
[VIDEO input signal]
[Terminal]
INPUT6 video input
100% white
2
Auto adjustment
performance
Adjustment process
[N358 ADJ]
page 4/20
Black
Bring the cursor on [N358 ADJ] and press [ENTER].
[N358 ADJ OK] appears when finished.
10.5. SECAM adjustment
1
Adjustment point
Setting
Adjustment conditions
[Signal]
SECAM
Full field colour Bar Signal
•
Adjustment procedure
Feed the SECAM full field colour bar signal (75% colour saturation) to
INPUT6 video input.
[VIDEO input signal]
[Terminal]
INPUT6 video input
100% white
2
Auto adjustment
performance
Adjustment process
[SECAM ADJ]
page 4/20
Black
Bring the cursor on [SECAM ADJ] and press [ENTER].
[SECAM ADJ OK] appears when finished.
10.6. ADC adjustment (Component 15K)
1
Adjustment point
Setting
Adjustment conditions
[Signal]
COMP15K, 50Hz (576i)
100% Full field colour bar Signal
•
Adjustment procedure
Feed the COMPONENT 15K 100% full field colour bar signal (100%
colour saturation) to INPUT5 COMPONENT IN.
[Terminal]
INPUT5 COMPONENT IN
100% white
2
Auto adjustment
performance
Adjustment process
[COMP15k ALL ADJ]
page 6/20
Black
Bring the cursor on [COMP15k ALL ADJ] and press [ENTER] [COMP15k ALL
ADJ] [OK] appears when finished.
5 – 11
LC-90LE740X
10.7. ADC adjustment (Component 33K)
1
Adjustment point
Setting
Adjustment conditions
[Signal]
COMP33K, 50Hz (1080i/50Hz)
100% Full field colour bar Signal
•
Adjustment procedure
Feed the COMPONENT 33K 100% full field colour bar signal (100%
colour saturation) to INPUT5 COMPONENT IN.
[Terminal]
INPUT5 COMPONENT IN
100% white
2
Auto adjustment
performance
Adjustment process
[HDTV ADJ]
page 7/20
Black
Bring the cursor on [HDTV ADJ] and press [ENTER].
[HDTV ADJ OK] appears when finished.
10.8. PC signal adjustment (ANALOG RGB)
1
Adjustment point
Setting
Adjustment conditions
•
[Signal]
XGA, 60Hz
100% Full Field Colour Bar Signal
Adjustment procedure
Feed the XGA 60Hz 100% full field colour bar signal (100% colour saturation) to INPUT7 PC IN.
[Terminal]
INPUT7 PC IN
100% white
2
Auto adjustment
performance
Adjustment process
[ANALOG PC ADJ] menu
page 8/20
Black
Bring the cursor on [ANALOG PC ADJ] and press [ENTER].
[ANALOG PC ADJ OK] appears when finished.
11. White Balance Adjustment
For white balance adjustment, adjust the offset values on pages 11/20.
[Condition of the unit for inspection]
[Input signal condition]
[Adjustment reference device]
: Modulated light (+16), Colour temperature (High)
AV MODE: DYNAMIC
Active Backlight: OFF
OPC: OFF
Asing Time: Min, 60 minute
: HDMI 1080i 15IRE (LO), 78IRE (HI)
: Minolta CA-210
[Adjustment procedure]
1) Display the current adjustment status at R/G/B_GAIN (HI). (Page 11/20 of process adjustment)
The signal of 78IRE is input.
2) Read the value of the luminance meter. x = 0.272, y = 0.277
3) Change R_GAIN (HI)/B_GAIN (HI) (Adjustment offset value) on page 11/20 of process adjustment so that the values of the luminance meter
approach x = 0.272 and y = 0.277.
(Basically, G is not changed. If adjustment fails with R and B, change G. When G is lowered, the weaker of R or B must be fixed.)
4) Display the adjustment status of the current R/G/B_GAIN (LO).
The signal of 15IRE is input.
Change R_GAIN (LO)/B_GAIN (LO) (adjustment offset value) on page 11/20 of process adjustment so that the values of the luminance meter
approach x = 0.272 and y = 0.277.
5) Both HI and LO are repeating the step from 1 to 4 until becoming an aim value.
[Adjustment reference standard value]
Adjustment spec ± 0.002
Inspection spec ± 0.004 (point LO)
Adjustment spec ± 0.001
Inspection spec ± 0.002 (point HI)
6) After completing adjustments, set EEP SAVE (20/20) to ON in the process menu to save the white balance adjustment value.
5 – 12
LC-90LE740X
12. Key writing
12.1. EDID writing (Main PWB: QPWBXF953WJ**)
1
Adjustment point
HDMI EDID writing
ANALOG RGB EDID writing
(Main PWB)
Adjustment conditions
Process mode
Model discrimination check
Adjustment procedure
1) Enter the process mode.
2) Point the cursor to [HDMI EDID WRITE] and press the [ENT]
key.
The writing is complete when [OK] is displayed.
(If not written, HDMI does not function.)
CAUTION: Perform the data writing after setting the model discrimination. The data based on the model discrimination
information is recorded in EEPROM.
12.2. MAC key writing (MAIN PWB: QPWBXF953WJ**)
1. Write the MAC key data on XXXX mounted on the main PWB.
2. Carry out thorough data management to avoid redundant writing of data.
If the IC where data is written is damaged, replace the PWB since only the IC cannot be changed.
13. Factory setting
After completing the factory setting, pull out the AC cord to complete the setting.
CAUTION: Do not turn on the power after completing the factory setting. lf the power is turned on, configure the factory setting again.
1
Adjustment point
Factory setting
Adjustment conditions
Complete the setting by
pulling out the AC cord.
Adjustment procedure
•Point the cursor to [INDUSTRY INIT], set to “ON” using [+]/[-] of the [VOL] key, and press
the [ENT] key.
* Please confirm the country following to the below list.
Setting
AUSTRALIA
NEWZEALAND
GENERAL
Suffix
X
D
B
Z
Country
Australia
New Zealand
Thailand
Other country
The version confirmation screen appears on the green screen. It is completed when [SUCCESS] is displayed at the top.
(If error occurs, [ERROR] is displayed on the red screen.)
•Turn off the AC power.
The following items are initialized when configuring the factory setting.
1) User set value
2) Channel data (broadcasting frequency, etc.)
3) Password setting value
4) Operating time
5) StandbyCause
6) Auto installation flag
7) V-CHIP block setting value
14. Software version
1. Main microprocessor
LEON_LE740X_xxx.USB
2. Monitor microprocessor
LEONSUBxxx.SMB
5 – 13
LC-90LE740X
[2] PUBLIC MODE SETTING PROCEDURE
1. How to start Public Mode
Starting the Public Mode
•
There is one following ways to display the PUBLIC Mode setting screen.
1) Method of needing password
a) Press the "INPUT" and "VOL (+)" keys on the set at once and turn on the power.
b) Display the Pass Word input screen.
Enter password
Enter password
Enter password
Operation procedure
•
The initial input position is the digit at the left end.
•
For the numeric keys “0” to “9” of R/C, key input is accepted.
Input of the other keys is prohibited.
•
Change “—” to “ * ” by inputting the numeric key at the input position, and shift the input position rightward one digit.
•
When three digits are completely input, the Pass Word is judged.
c) Check the Pass Word by inputting three digits.
If the Pass Word “0” “2” “7”, it shifts to the PUBLIC Mode setting screen.
In another case, the screen is erased, and it operates in the ordinary mode.
2) In the adjustment process mode, turn on “PUBLIC MODE”. Also press the “CH (
on the power.
)” or “CH (
)” and “VOL(+)” keys on the set at once and turn
2. How to exit Public Mode
There are the following ways to quit the public mode setup screen.
• Turn off “PUBLIC MODE” in the adjustment process mode. (
• Turn off the power with the “POWER” key. (
• Select “EXECUTE”. (
) ← This way alone is not for quitting the setup screen, but for quitting the mode itself.
)
)
... “PUBLIC MODE” stays on in the adjustment process mode.
... The settings will be back to the factory ones.
3. Public Mode Setting Values
• With the factory settings made, the public mode settings get initialized. (The adjustment process remains intact.)
5 – 14
LC-90LE740X
4. Public Mode Menu
The guidance is not displayed on screen.
Setup procedure
• To move the cursor up and down, use the “cursor UP/DOWN” key (remote controller) and “CH (
)/(
)” key (remote controller and set).
• To change the settings, use the “cursor RIGHT/LEFT” key (remote controller) and “VOL (+)/(–)” key (remote controller and set).
• To save new settings, keep the cursor at “EXECUTE” and use “ENTER” key (remote controller and set).
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5 – 15
LC-90LE740X
5. On Setting Items
1) Power ON fixed [POWER ON FIXED]
Option
Default
Function
Key disabled when set
other than default
Remarks
“VARIABLE”, “FIXED_ALL”, “FIXED_BODYKEY” or “RCRESPOND” (loop enabled)
“VARIABLE”
: “POWER/RECEPTION” key on TV unit or remote control is enabled.
• VARIABLE
: “POWER/RECEPTION” key on TV unit or remote control is disabled.
• FIXED_ALL
• FIXED_BODYKEY : Only the “MAIN POWER” key on TV unit is disabled (The remote control is enabled).
: The main unit’s POWER switch toggles between ON and Standby (the same operation by the
• RC RESPOND
remote control).
• OFF TIMER (SLEEP) (*Only when setting to FIXED_ALL)
•
When selecting to “FIXED_ALL”, function related standby factors (see below) doesn’t work. and not selecting.
OFF TIMER (Sleep)
No operation OFF
No signal OFF (including the power management)
* These items does not exist according to the model.
If the power button is pressed in the ordinary mode in setting to “FIXED_ALL” and “FIXED_BODYKEY”, the caution is displayed for 5 seconds.
When power button on the main unit is pressed
When power button on R/C is pressed
No Power off by remote control.
No Power off by power button.
*
The OSD display is an example.
If another ODS is previously displayed, the status is reset (MENU or similar).
2) Instantaneous current shutdown setting in turning off the power [SHUT DOWN MODE]
Option
Default
Function
Remarks
“NORMAL” or “QUICK”
NORMAL
• This function decides whether scanning digital tuner is enabled or disabled when the power is standby.
NORMAL
: Scanning digital tuner is enabled when the power is standby.
QUICK
: Scanning digital tuner is disable.
It is possible to put into the standby state instantaneously due to power off input, when the
power is standby.
Immediately, state is a complete standby.
In selecting “QUICK”, the function does not work for the following items. (selection impossible.)
• ON TIMER, QUICK START, DIGITAL FIXED, etc.
* These items does not exist according to the model.
3) Volume maximum level [MAXIMUM VOLUME]
Option
Default
Function
Remarks
0~100 (loop disabled)
100
The volume cannot be increased more than the adjusted value (the main unit’s speaker only).
• When setting to 59 or less, only the figure is displayed in the normal mode; the volume bar is not displayed.
• The volume of the headphones is limited.
• The setting is impossible when VOLUME FIXED is set to FIXED.
5 – 16
LC-90LE740X
4) Volume fixed [VOLUME FIXED]
Option
Default
Function
Exception
Disabled key when
setting to FIXED
Remarks
“VARIABLE”, “FIXED”, “ACCTRL” or “AC/RCCTRL” (loop enabled)
“VARIABLE”
• VARIABLE
: The volume is not fixed.
• FIXED
: The volume is fixed to the value adjusted in the volume fixed level.
• AC CTRL
: The unit starts at the volume specified in the volume fixed level, when power is turned on in the
case of the AC-ON only.
: The unit starts at the volume specified in the volume fixed level, when power is turned on in
• AC/RC CTRL
any case.
(AC→ON, remote control→ON, main utit's key→ON)
• In the adjustment process, the volume can be set to any level regardless of this setting.
• VOLUME UP/DOWN [both remote control and main unit]
• MUTE
* Main units's key is enabled for operating menu.
• [MAXIMUM VOLUME] has priority to [VOLUME FIXED]
* When setting to FIXED, Maximum volume is fixed.
• The volume of the headphones is fixed.
• When setting to “FIXED”, the volume is not displayed in operating Disabled key.
• In menu operation, the main unit’s keys (Vol (+/-)) are enabled.
5) Volume fixed level [VOLUME FIXED LEVEL]
Option
Default
Function
Exception
Remarks
0~100 (loop disabled)
30
The volume is fixed to the adjusted value (the main unit’s speaker only).
• In the adjustment process, the volume can be set to any level regardless of this setting.
• When [VOLUME FIXED] is set to “VARIABLE”, the setting cannot be changed.
6) Remote control operation [RC BUTTON]
Option
Default
Function
Exception
Remarks
“RESPOND”, “NORESPOND” or “LIMITED” (loop enabled)
“RESPOND”
The operation of the remote control’s keys is set.
RESPOND
: The remote control’s keys in the normal state are enabled.
NO RESPOND
: The remote control’s keys in the normal state are disabled.
The POWER key (RECEPTION/STANDBY key) is also disabled.
: Only a part of keys (CHANNEL, etc.) is enabled and other keys are disabled.
LIMITED
• All the keys are enabled regardless of this setting while entering the adjustment process mode, inspection mode or
Public Mode setting screen.
The enable keys when setting to “LIMITED” are depended on Model.
7) Main Unit Operation [PANEL BUTTON]
Option
Default
Function
Exception
“RESPOND” or “NO RESPOND” (loop enabled)
“RESPOND”
• RESPOND
: The main unit’s keys are enabled.
• NO RESPOND
: The main unit’s keys are disabled excluding the POWER key (RECEPTION/STANDBY key).
• The start operation in the adjustment process mode, inspection mode are enabled regardless of this setting.
• All the keys are enabled regardless of this setting while entering the adjustment process mode, inspection mode or
Public Mode setting screen.
• For the models with the MENU key on the main unit, menu operation is possible regardless of the setting during the
initial setting when the power is turned on for the first time.
5 – 17
LC-90LE740X
8) Menu operation [MENU BUTTON]
Option
Default
Function
Exception
Disabled key excluding
Menu key when setting
to not default
Remarks
“RESPOND” or “NO RESPOND” (loop enabled)
“RESPOND”
The MENU key on the main unit and remote control is decided whether it is enabled or disabled.
• RESPOND
: The manu key is enabled.
• NO RESPOND
: The manu key is disabled.
: All the keys are enabled regardless of this setting while entering the process mode, inspection
mode or Public Mode setting screen.
All the direct transition keys to menu display. (AUTO PRESET, MANUAL MEMORY and others)
* These keys does not exist according to the model.
When setting to “NO RESPOND”
• For the models with the MENU key on the main unit, menu operation is possible regardless of the setting while the
initial setting when the power is turned on for the first time.
9) AV position fixed [AV POSITION FIXED]
Option
Default
Function
Remarks
“VARIABLE” or “FIXED” (loop enabled)
“VARIABLE”
• VARIABLE
: AV position is not fixed.
• FIXED
: AV position is fixed.
: The image/sound adjustment items in the menu are fixed in the selected state.
: When receiving “AV POSITION” of the remote control, only the actual state is displayed, and
setting is not changed.
• When receiving the sound select direct keys (AV POSITION key, OPC, DOLBY key, etc.), only the actual state is
displayed; no setting is changed.
* These keys does not exist according to the model.
• The settings for the Public mode are retained after the personal data is initialized, each item for the AV position and
image/sound adjustment are not initialized.
10) OSD display [ON SCREEN DISPLAY]
Option
Default
Function
Key which may be
enabled
(Example of the confusing key)
Disabled key when
setting to not default
Remarks
“YES”, “NO” or “LIMITED” (loop enabled)
“LIMITED” is looped only in case of need (destination).
“YES”
• YES
: OSD is displayed.
• NO
: The following OSD is not displayed.
Registration, setting, adjustment menu, channel call, volume bar, and input select.
: Only a part of OSD (CH call: “New Information” etc...) is not displayed.
• LIMITED
• It is OK in the case that simple input select occur or the original state returns soon automatically.
•
•
•
When setting to “NO”, the keys which is related to visibility of the screen and sound cannot be used.
STILL IMAGE, SCREEN DISPLAY, OFF TIMER, AV POSITION, BRIGHTNESS SENSOR, SCREEN SIZE SELECT,
AUTO PRESET, MANUAL MEMORY, IMAGE SELECT, SOUND SELECT, LANGUAGE, Closed caution
* Disabled keys dependeds on the models.
When setting to “NO”,
ON TIMER (Watching reservation) is cleared.
OFF TIMER “SLEEP” is cleared.
* These items does not exist according to the model.
When setting to “NO”,
These Displays (Version-up, Public mode setting screen, Pass Word input screen of Public
Mode, the adjustment process mode, K mark of inspection mode) are enabled regardless of
this setting.
5 – 18
LC-90LE740X
11) Start mode [INPUT MODE START]
Option
Default
Function
Remarks
“NORMAL” or “Input source 1 (input selection or channel)” ... (loop enabled)
“NORMAL”
Which kinds of input source or channel is decided when the power turning on.
NORMAL
: The content of the last memory is followed.
• When setting to not Normal, ON TIMER (Watching reservation) has priority.
• When setting to “NORMAL”, [INPUT MODE FIXED] is set to “VARIABLE” and [INPUT MODE FIXED] is prohibited to
select. (selection impossible.)
Example of option: “NORMAL”, “TVD (002TV)”, “INPUT1”, “INPUT2”, “INPUT3”, “HDMI1”, “HDMI2”, “HDMI3”, “HDMI4”.
12) Input fixed [INPUT MODE FIXED]
Option
Default
Function
Disabled key when
setting to “FIXED”
Remarks
“VARIABLE”, “FIXED”, “ACCTRL” or “AC/RCCTRL” (loop enabled)
VARIABLE
VARIABLE
: If [INPUT MODE START] is set to Normal, input mode is not fixed.
FIXED
: When “INPUT MODESTART” is active, it is impossible to switch to another channel or input
source.
: When “INPUT MODESTART” is active the unit starts at the input mode which is selected when
AC CTRL
power is turned on in the case of the AC-ON only.
: When “INPUT MODESTART” is active the unit starts at the input mode which is selected
AC/RC CTRL
when power is turned on in any case.
(AC→ON, remote control→ON, main utit's key→ON)
CHANNEL (+/-), DIRECT CHANNEL buttons, FLASHBACK, INPUT SELECT, TV/VIDEO, AUTO PRESET,
MANUAL MEMORY, i.LINK, DIRECTINPUTSELECT, ATV, DTV, EPG, RADIO etc...
• If [INPUT MODE START] is Normal, this function cannot be set.
Set to “VARIABLE” automatically.
• When setting to “FIXED”,
The item related to the channel setting and input selection in Menu are not displayed.
ON TIMER (Watching reservation) is not active.
* These items does not exist according to the model.
13) Speaker ON/OFF selection [LOUD SPEAKER]
Option
Default
Function
Remarks
“ON” or “OFF” (loop enabled)
ON
ON
: The sound from the speakers is output.
OFF
: The sound from the speakers is not output even if the headphones are not used.
• When the VOL (+/-) key is pressed, the mute icon is displayed for 4 seconds.
• For the MUTE key and sound-related keys, caution is displayed.
• For the headphones, normal operation is possible.
14) Remote control path through [RC PATH THROUGH]
Option
Default
Function
Exception
Remarks
“OFF”, “ON: TVRCE” or “ON: TVRCD” (loop enabled)
OFF
The item decide whether the signal received by the remote control’s light-receiving section is output to the blankpin (9pin)
of RS232C.
: This function is not active.
OFF
: This function is active, and remote control is active, too.
ON: TVRCE
: This function is active, but remote control is not active.
ON: TVRCD
• In the case of “ON: TV RCD”, the start operation in the adjustment process mode, inspection mod are enabled
regardless of this setting.
• In the case of “ON: TV RCD”, all the keys are enabled regardless of this setting while entering the adjustment process
mode, inspection mode or Public mode setting screen.
* Remote control path through does not exist according to the model.
5 – 19
LC-90LE740X
15) 232C power ON control [232C POWON]
Option
Default
Function
“ENABLE” or “DISABLE” (loop enabled)
DISABLE
The item decide whether Power ON by the 232C command is enabled/disabled in the standby state.
The same function as 232C command “RSPW”.
ENABLE
: POWR0001 is always enabled.
DISABLE
: Start-up may be impossible at POWR0001.
(If the 232C command reception module is set to OFF, the command is invalid.)
16) Public mode setting [PUBLIC MODE]
Option
Default
Function
Remarks
“OFF” or “ON” (loop enabled)
OFF
The item decide whether Public mode setting menu are enabled or disabled.
The same item as [PUBLIC MODE] in the adjustment process menu.
OFF
: Public mode is not active.
ON
: Public mode is active.
Each operation of the Public mode is impossible unless this item is set to ON.
5 – 20
LC-90LE740X
[3] USB Clone Specifications
Input “369” as password on the copy mode screen using the same input method as Public Mode on the previous page.
1. Screen Specifications (copy mode <TV→USB>)
•
TV→USB (sucking from TV)
<FIG 1>
* Do not focus on button before recognition
of USB device and use is possible.
<FIG 2>
Copy mode
TV
USB
USB
[ Start
]
TV
[ Start
]
USB
USB
USB
[ Wait… ]
[ Start
TV
]
Processing failed or multiple insertion.
<FIG 4>
Copy mode
Copy mode
USB
[ Start
]
TV
TV
[ Start
St
]
USB
Refer to (USB
TV
<FIG 3>
Copy mode
TV
Press [ENTER]
Processing successful.
Press
[UP] or [DOWN]
<FIG 5>
Wait display blinks for 1 second
during implementation. Change
button to Select color during this
time to disable key reception.
Copy mode
USB
[ Done
]
TV
USB
TV
[ Start
]
USB
TV
[ Failed ]
[ Start
]
TV <writing to TV>).
•
After finishing processes in FIG 2, return the button to Focus color.
•
On USB clone display screen in FIG 1 and FIG 5, key reception is disabled except for Up/Down key and Enter key.
•
Key reception is disabled in USB clone display screen in FIG 2 to FIG 4.
•
After proceeding to FIG 3, 4, turn off the power with AC OFF.
2. Screen Specifications (copy mode <USB→TV>)
•
USB→TV (writing to TV)
<FIG 1>
* Do not focus on button before recognition
of USB device and use is possible.
<FIG 2>
Copy mode
TV
USB
USB
[ St
Start
]
TV
[ Start
]
USB
USB
USB
[ Start
[ Start
]
TV
TV
[ St
Start
]
USB
]
[ Wait… ]
TV
Processing failed or multiple insertion.
<FIG 4>
Cop mode
Copy
USB
Refer to (TV
TV
<FIG 3>
Copy mode
TV
Press [ENTER]
Processing successful.
Press
[UP] or [DOWN]
<FIG 5>
Wait display blinks for 1 second
during implementation. Change
button to Select color during this
time to disable key reception.
Copy mode
Copy mode
USB
[ Start
]
TV
TV
[ Done
]
USB
US
USB
TV
USB <sucking from TV>).
•
After finishing processes in FIG 2, return the button to Focus color.
•
On USB clone display screen in FIG 1 and FIG 5, key reception is disabled except for Up/Down key and Enter key.
•
Key reception is disabled in USB clone display screen in FIG 2 to FIG 4.
•
After proceeding to FIG 3, 4, turn off the power with AC OFF.
5 – 21
[ Start
]
[ Failed ]
LC-90LE740X
3. USB Clone Restrictions
•
Be sure to set the network setting (Setup/View setting/Network setup) after writing the data by USB Clone (USB→TV).
•
Use USB memory with a memory capacity of 1M byte or greater.
•
The USB memory file system is FAT (FAT32).
•
No connection of multiple USB memories to the USB port.
•
If the USB memory connection is one connection, carry out clone operations regardless of what USB port it is connected to.
•
Up until recognition of the USB device and usage enable, do not focus on the button shown in FIG 1 of the “1. Screen Specifications (copy mode
<TV→USB>)” and “2. Screen Specifications (copy mode <USB→TV>)” (maximum 45 seconds).
•
The following must agree during sucking from TV (TV→USB) and writing to TV (USB→TV).
⋅ Vender name (fixed)
⋅ Key information (fixed)
⋅ USB Clone Ver.
⋅ Inch size
⋅ Shipping destination settings
⋅ Model name
⋅ Software version
5 – 22
LC-90LE740X
Service
CHAPTER 6. TROUBLESHOOTING TABLE
LC-90LE740X
Manual
[1] Failure diagnosis by LED in front of cabinet
START
Is the Center Icon flashing?
Yes
Check "[2] LED flashing specification at the time of an error (Center icon LED used)".
No
Is the Center Icon lighting
When AC plug on?
No
Check Power-Unit and AC-cable.
Yes
Is the Backlight lighting?
No
Check "࡮LED Backlight does not turn on.".
Yes
Check "࡮Picture does not display.".
[2] LED flashing specification at the time of an error (Center icon LED used)
1. Display method
•
Since only the center icon LED can be used, slow flashing and fast flashing are combined.
•
After recovering from an error, if the same error cannot be generated again, refer to MONITOR ERR CAUSE on the adjustment process mode.
2. LED flashing method
Error flashing
Center icon
ON
OFF
1600ms
400ms
400ms
1600ms
300ms
100ms
6–1
LC-90LE740X
Table 1. Concrete flashing pattern
Item
Inverter/Lamp system failure
Power PWB
failure
(Power failure, etc.)
Detail display
Slow flashing
Flashes once
Flashes twice
Main PWB
failure
(Communication
failure, etc.)
Flashes 3 times
Others
Flashes 4 times
Fast flashing
Flashes once
Flash once
Flash twice
Flash 3 times
Flash 5 times
Flashes once
Flashes twice
Flashes 3 times
Flashes 5 times
Flashes once
Flashes 3 times
*2: They depend on the system. Power supply error is defined from product to product.
*3: For details, refer to ERROR STANDBY CAUSE on the adjustment process mode.
6–2
Cause
Lamp error
Power supply error 2 (*2) AC_DET error
Power supply error 2 (*2) UR+13V error
Power supply error 2 (*2) D+3.3V error
Panel power supply error
Initial communication error
Start-up confirmation communication error
Regular communication error
Other communication error
Temperature error
Notification from the main microprocessor (*3)
LC-90LE740X
3. New method
LED flashing timing chart at the time of an error
100ms
400ms
1.6sec
1) Inverter/Lamp failure details (Flashes slowly once and flashes fast)
Error type
Lamp failure
Flashes fast once
Center icon LED operation
H: On
L: Off
2) Power failure details (Flashes slowly twice and flashes fast)
SM_POW
Main 13V failure
Flashes fast twice
D_POW
Digital 3.3V failure
Flashes fast 3 times
PANEL_POW
Panel 12V failure
Flashes fast 5 times
Pins are monitor microprocessor pins unless otherwise specified.
ERR_PNL: failure (H). Inverter / Lamp error is detected.
Note that after five detection counts, the lamp cannot be
activated except in the adjustment process mode.
Accumulated counts are cleared to 0 by the setting in the
LAMP ERROR RESET on the adjustment process mode.
Note
H: On
Pins are monitor microprocessor pins unless otherwise specified.
AC_DET failure (L).
L: Off
H: On
DET_13V failure (L). Main 13V is not applied.
L: Off
H: On
DET_D3V3 failure (L). Digital 3.3V is not applied.
L: Off
H: On
DET_PNL12V failure (L). Panel power is not applied.
Error type
PS_ON
AC_DET failure
Flashes fast once
Note
Center icon LED operation
L: Off
3) Communication failure details (Flashes slowly 3 times and flashes fast)
Error type
Initial communication reception failure
Flashes fast once
Center icon LED operation
H: On
L: Off
Start-up confirmation reception failure
Flashes fast twice
H: On
L: Off
Regular communication failure
Flashes fast 3 times
Other communication failure
Flashes fast 5 times
H: On
L: Off
H: On
Note
Basically, debug print logs are analyzed or communication logs are analyzed by a bus monitor.
Initial communication from the main CPU is not
received. (Request for the monitor model No. is not
received.)
→ Communication line failure or main CPU start-up failure
Start-up reason confirmation from the main CPU cannot
be received. (Start-up communication until start-up reason notification command is not received.)
→ Main CPU start-up failure or monitor microprocessor
reception failure
Regular communication that is performed at 1 second
intervals in the normal operation is interrupted.
→ Main CPU operation failure or monitor microprocessor reception failure
When a request (PM_REQ=H) is sent from the main
microprocessor, the request command is not output
from the main CPU, etc.
→ Main CPU operation failure or monitor microprocessor reception failure
L: Off
6–3
LC-90LE740X
4) Other failure details (Flashes slowly 4 times and flashes fast)
Error type
Monitor temperature
failure
Flashes fast once
Note
Center icon LED operation
H: On
L: Off
Main failure
Flashes fast 3 times
H: On
L: Off
6–4
Pins are monitor microprocessor pins unless otherwise specified.
If the panel temperature is 60°C or more for 15 seconds
or more in a row, CAUTION appears on the OSD
(flashes in red in the lower right screen).
If the panel temperature is 60°C or more for 25 seconds
or more in a row, error standby is activated.
Main microprocessor detection error (CPU temperature
error, etc.)
The details are displayed on page 1 of the adjustment
process mode.
LC-90LE740X
[3] TROUBLESHOOTING TABLE
• LED Backlight does not turn on.
If it is not an error of power supply/LED driver,
It is start-up in the lamp error disregard mode.
Do you start?
YES
When main unit is replaced, does it start normally?
YES
Replace main unit.
NO
When LCD control unit is replaced, does it start normally?
YES
Replace LCD control unit.
NO
When the parts in the panel can be replaced. →Replace all LED-bars in the panel module.
When the parts in the panel cannot be replaced. →Replace panel module.
If it is not an error of power supply/LED driver,
It is start-up in the lamp error disregard mode.
Do you start?
NO
When power supply unit is replaced, does it start normally?
YES
Replace power supply unit.
NO
When main unit is replaced, does it start normally?
YES
Replace main unit.
NO
When LCD control unit is replaced, does it start normally?
YES
Replace LCD control unit.
NO
When the parts in the panel can be replaced. →Replace all LED-bars in the panel module.
When the parts in the panel cannot be replaced. →Replace panel module.
6–5
LC-90LE740X
Trouble Shooting Panel Module
When C-S FPC is replaced, does screen display normally?
YES
Replace C-S FPC.
NO
When C-PWB is replaced, does screen display normally?
YES
Replace C-PWB.
(Adjust “VCOM ADJ” after replace C-PWB)
NO
Replace Panel HIRAKI.
(Adjust “VCOM ADJ” after replace Panel HIRAKI)
6–6
LC-90LE740X
• Picture does not display.
Trouble Shooting LCD controller board(C-PWB)
A screen isn't displayed.
(The LED Backlight has shone at start-up)
YES
NO
Please enter the adjustment process mode and display "LCD TEST
PATTERN 2" of 13 page.
Please press volume (-)/(+) keys and a test pattern is displayed.
Is it all usually displayed?
•
•
It is checked whether PL/LW is connected correctly.
Replace another C-PWB.
YES
It isn't the fault of a C-PWB.
Please check operation with reference to other items.
YES
•
•
NO
Is only the half of the right screen or the left screen displayed normally?
NO
Please check the C-PWB.
Replace another board.
6–7
It is checked whether FFC (to Panel) is connected correctly.
Replace another C-PWB.
LC-90LE740X
<HDMI input> No video (1)-1
HDMI: No external input video [INPUT-1]
Is INPUT-1 selected on the input select menu screen?
NO
Select INPUT-1 on the input select menu screen
for the right input signal.
YES
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin (18) of SC1501 to pin (60) of IC2601
(HDMI_SW)?
NO
Check the line between the pin(18) of SC1501 and
the pin(60) of IC2601.
NO
Check the line between the pin (19) of SC1501
and the pin (59) of IC2601.
YES
Does the HPD signal come from pin (59) of IC2601 to pin (19) of SC1501?
YES
Is IC2601(HDMI-SW) accessed by I2C, with HDMI connected, to read the DDC-I2C
SCL/SDA data?
NO
Check the DDC-I2C line and its peripheral circuits.
SC1501 pin(15)(SCL), pin(16)(SDA)
IC2601 pin(58), pin(57)
YES
Are there the TMDS signal at input pins of IC3301(CPU)?
NO
Check the TMDS line (between SC1501 and
IC2601) and its peripheral circuits.
[IC2601 TMDS input pins]
pin(26/27)(CLK-/+), pin(28/29)(D0-/+), pin(30/
31)(D1-/+), pin(31/33)(D2-/+).
Check the TMDS line (between IC2601 and
IC3301) and its peripheral circuits.
[IC3301 TMDS input pins]
pin(AH35/AH34)(CLK-/+),
pin(AG35/AG34)(D0-/+),
pin(AG37/AG36)(D1-/+),
pin(AF35/AF34)(D2-/+).
Check the I2C line (between IC2601 and IC3301).
IC2601:pin(71)(SCL), pin(70)(SDA)
IC3301:pin(AN12), pin(AP12)
Check IC2601 and its peripheral circuits.
YES
Is the T-CON PWB connected?
VBO_LOCKN pin (40) of SC3801 become Low if there is no problem in the connection.
YES
Are the V-By-One HS signal input to the pin of SC3801?
VBO_CN_TXA+/- (36/37pin), VBO_CN_TXB+/- (32/33pin),
VBO_CN_TXC+/- (28/29pin), VBO_CN_TXD+/- (24/25pin).
YES
Check the panel module and harness.
6–8
NO
Check the T-CON PWB and harness.
Check IC3301 and SC3801 and their peripheral
circuits in Main PWB.
NO
Check IC3301 and its peripheral circuits.
(IC3501/IC3502/IC3503/IC3504, etc.)
LC-90LE740X
<HDMI input> No video (1)-2
HDMI: No external input video [INPUT-2]
Is INPUT-2 selected on the input select menu screen?
NO
Select INPUT-2 on the input select menu screen
for the right input signal.
YES
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin (18) of SC1502 to pin (75) of IC2601
(HDMI_SW)?
NO
Check the line between the pin(18) of SC1502
and the pin(75) of IC2601.
YES
Does the HPD signal come from pin (74) of IC2601 to pin (19) of SC1502?
NO
Check the line between the pin (74) of IC2601
and the pin (19) of SC1502.
YES
Is IC2601(HDMI-SW) accessed by I2C, with HDMI connected, to read the DDC-I2C
SCL/SDA data?
NO
Check the DDC-I2C line and its peripheral circuits.
SC1501 pin(15)(SCL), pin(16)(SDA)
IC2601 pin(73), pin(72)
YES
Are there the TMDS signals at input pin of IC3301(CPU)?
NO
Check the TMDS line (between SC1502 and
IC2601) and its peripheral circuits.
[IC2601 TMDS input pins]
pin(17/18)(CLK-/+), pin(19/20)(D0-/+), pin(21/
22)(D1-/+), pin(23/24)(D2-/+).
Check the TMDS line (between IC2601 and
IC3301) and its peripheral circuits.
[IC3301 TMDS input pins]
pin(AH35/AH34)(CLK-/+),
pin(AG35/AG34)(D0-/+),
pin(AG37/AG36)(D1-/+),
pin(AF35/AF34)(D2-/+).
Check the I2C line (between IC2601 and
IC3301).
IC2601:pin(71)(SCL), pin(70)(SDA)
IC3301:pin(AN12), pin(AP12)
Check IC2601 and its peripheral circuits.
YES
Is the T-CON PWB connected?
VBO_LOCKN (40pin) of SC3801 become Low if there is no problem in the connection.
YES
Are the V-By-One HS signal input to the pin of SC3801?
VBO_CN_TXA+/- (36/37pin), VBO_CN_TXB+/- (32/33pin),
VBO_CN_TXC+/- (28/29pin), VBO_CN_TXD+/- (24/25pin).
YES
Check the panel module and harness.
6–9
NO
Check the T-CON PWB and harness.
Check IC3301 and SC3801 and their peripheral
circuits in Main PWB.
NO
Check IC3301 and its peripheral circuits.
(IC3501/IC3502/IC3503/IC3504, etc.)
LC-90LE740X
<HDMI input> No video (1)-3
HDMI: No external input video [INPUT-3]
Is INPUT-3 selected on the input select menu screen?
NO
Select INPUT-3 on the input select menu screen for
the right input signal.
YES
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin (18) of SC1503 to pin (56) of IC2601
(HDMI_SW)?
NO
Check the line between the pin(18) of SC1503 and
the pin(56) of IC2601.
NO
Check the line between the pin (55) of IC2601 and
the pin (19) of SC1503.
YES
Does the HPD signal come from pin (55) of IC2601 to pin (19) of SC1503?
YES
Is IC2601(HDMI-SW) accessed by I2C, with HDMI connected, to read the DDC-I2C
SCL/SDA data?
NO
Check the DDC-I2C line and its peripheral circuits.
SC1501 pin(15)(SCL), pin(16)(SDA)
IC2601 pin(54), pin(53)
YES
Are there the TMDS signal at input pins of IC3301(CPU)?
NO
Check the TMDS line (between SC1503 and
IC2601) and its peripheral circuits.
[IC2601 TMDS input pins]
pin(8/9)(CLK-/+), pin(10/11)(D0-/+), pin(12/13)(D1-/
+), pin(14/15)(D2-/+).
Check the TMDS line (between IC2601 and IC3301)
and its peripheral circuits.
[IC3301 TMDS input pins]
pin(AH35/AH34)(CLK-/+), pin(AG35/AG34)(D0-/+),
pin(AG37/AG36)(D1-/+), pin(AF35/AF34)(D2-/+).
Check the I2C line (between IC2601 and IC3301).
IC2601:pin(71)(SCL), pin(70)(SDA)
IC3301:pin(AN12), pin(AP12)
Check IC2601 and its peripheral circuits.
YES
Is the T-CON PWB connected?
VBO_LOCKN pin(40) of SC3801 become Low if there is no problem in the connection.
YES
Are the V-By-One HS signal input to the pin of SC3801?
VBO_CN_TXA+/- (36/37pin), VBO_CN_TXB+/- (32/33pin),
VBO_CN_TXC+/- (28/29pin), VBO_CN_TXD+/- (24/25pin).
YES
Check the panel module and harness.
6 – 10
NO
Check the T-CON PWB and harness.
Check IC3301 and SC3801 and their peripheral circuits in Main PWB.
NO
Check IC3301 and its peripheral circuits.
(IC3501/IC3502/IC3503/IC3504, etc.)
LC-90LE740X
<HDMI input> No video (1)-4
HDMI: No external input video [INPUT-4]
Is INPUT-4 selected on the input select menu screen?
NO
Select INPUT-4 on the input select menu screen for
the right input signal.
YES
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin (18) of SC1504 to pin (51) of IC2601
(HDMI_SW)?
NO
Check the line between the pin(18) of SC1504 and the
pin(51) of IC2601.
NO
Check the line between the pin (50) of IC2601 and the
pin (19) of SC1504.
YES
Does the HPD signal come from pin (50) of IC2601 to pin (19) of SC1504?
YES
Is IC2601(HDMI-SW) accessed by I2C, with HDMI connected, to read the DDCI2C SCL/SDA data?
NO
Check the DDC-I2C line and its peripheral circuits.
SC1501 pin(15)(SCL), pin(16)(SDA)
IC2601 pin(49), pin(48)
YES
Are there the TMDS signal at input pins of IC3301(CPU)?
NO
Check the TMDS line (between SC1504 and IC2601)
and its peripheral circuits.
[IC2601 TMDS input pins]
pin(99/100)(CLK-/+), pin(1/2)(D0-/+), pin(3/4)(D1-/+),
pin(5/6)(D2-/+).
Check the TMDS line (between IC2601 and IC3301)
and its peripheral circuits.
[IC3301 TMDS input pins]
pin(AH35/AH34)(CLK-/+), pin(AG35/AG34)(D0-/+),
pin(AG37/AG36)(D1-/+), pin(AF35/AF34)(D2-/+).
Check the I2C line (between IC2601 and IC3301).
IC2601:pin(71)(SCL), pin(70)(SDA)
IC3301:pin(AN12), pin(AP12)
Check IC2601 and its peripheral circuits.
YES
Is the T-CON PWB connected?
VBO_LOCKN (40pin) of SC3801 become Low if there is no problem in the connection.
YES
Are the V-By-One signal input to the pin of SC3801?
VBO_CN_TXA+/- (36/37pin), VBO_CN_TXB+/- (32/33pin),
VBO_CN_TXC+/- (28/29pin), VBO_CN_TXD+/- (24/25pin).
YES
Check the panel module and harness.
6 – 11
NO
Check the T-CON PWB and harness.
Check IC3301 and SC3801 and their peripheral circuits in Main PWB.
NO
Check IC3303 and its peripheral circuits.
(IC3501/IC3502/IC3503/IC3504, etc.)
LC-90LE740X
No video (2)
COMPONENT: No external input video [INPUT-5]
Is INPUT-5 selected on the input select menu screen?
Is the INPUT-SELECT for the input signal?
NO
Select INPUT-5 on the input select menu screen for the right
input signal.
Is "COMPONENT" selected on the input select menu screen?
NO
Select "COMPONENT" on the input menu screen for the
right input signal.
YES
YES
Are there the COMPONENT video signal inputs at pins(AU26/AP25)(Y)/(AR26)(Pb) and (AP26)(Pr) of IC3301(CPU)?
NO
Check the line between the input terminals of J513 and IC3301.
J513 pin(1)(Y) pin(2)(Pb) pin(3)(Pr)
IC3301 pin(AU26/AP25) pin(AR26) pin(AP26)
YES
Is the T-CON PWB connected?
VBO_HTPDN pin (40) of SC3801 become Low if there is no problem in the connection.
YES
Are the V-By-One HS signal input to the pin of SC3801?
VBO_CN_TXA+/- (36/37pin), VBO_CN_TXB+/- (32/33pin),
VBO_CN_TXC+/- (28/29pin), VBO_CN_TXD+/- (24/25pin).
YES
Check the panel module and harness.
6 – 12
NO
Check the T-CON PWB and harness.
Check IC3301 and SC3801 and their peripheral circuits in Main PWB.
NO
Check IC3301 and its peripheral circuits.
(IC3501/IC3502/IC3503/IC3504, etc.)
LC-90LE740X
No video (3)
COMPSITE: No external input video [INPUT-5]
COMPSITE: No external input video [INPUT-6]
Is INPUT-5 selected on the input select menu screen?
Is INPUT-6 selected on the input select menu screen?
NO
Select INPUT-5 on the input select menu screen for
the right input signal.
NO
Select INPUT-6 on the input select menu
screen for the right input signal.
NO
Is "VIDEO" selected on the input select menu
screen?
YES
Select "VIDEO" on the input menu
screen for the right input signal.
NO
YES
Is there the COMPOSITE signal input at pin (AT30) of IC3301
(CPU)?
YES
Is there the COMPOSITE signal input at pin (AR31) of IC3301
(CPU)?
NO
Check the line between pin (2) of J509
and pin (AT30) of IC3301 (CPU).
NO
Check the line between pin (2) of J514 and
pin (AR31) of 3301 (CPU)?
J509:pin(2)
YES
J514:pin(2)
IC3301:pin(AT30)
IC3301:pin(AR31)
YES
Is the T-CON PWB connected?
VBO_LOCKN pin(40) of SC3801 become Low if there is no problem in the connection.
YES
Are the V-By-One HS signal input to the pin of SC3801?
VBO_CN_TXA+/- (36/37pin), VBO_CN_TXB+/- (32/33pin),
VBO_CN_TXC+/- (28/29pin), VBO_CN_TXD+/- (24/25pin).
YES
Check the panel module and harness.
6 – 13
NO
Check the T-CON PWB and harness.
Check IC3301 and SC3801 and their
peripheral circuits in Main PWB.
NO
Check IC3301 and its peripheral circuits.
(IC3501/IC3502/IC3503/IC3504, etc.)
LC-90LE740X
No video (4)
PC: No external input video [INPUT7]
Is the INPUT-7 selected on the input select menu screen?
NO
Select INPUT-7 on the input select menu screen for the right input signal.
YES
Is IC2601 (HDMI-SW) accessed by I2C, with PC connected, to read the VGA_SCL/SDA data?
Check the DDC-12C line and its peripheral circuits. (IC2601 and its peripherals).
Are there the video signal inputs at pins (AR24/AT24) (G), (AU24) (B) and (AR25) (R) of IC3301 (CPU)?
Are there the VSYNC/HSYNC signal inputs at pins (AM25) and (AN25) of IC3301?
NO
Check the line between SC504 and IC3301, and their peripheral circuits.
YES
Is the T-CON PWB connected?
VBO_LOCKN pin (40) of SC3801 become Low if there is no problem in the connection.
YES
Are the V-By-One HS signal input to the pin of SC3801?
VBO_CN_TXA+/- (36/37pin), VBO_CN_TXB+/- (32/33pin),
VBO_CN_TXC+/- (28/29pin), VBO_CN_TXD+/- (24/25pin).
YES
Check the panel module and harness.
6 – 14
NO
Check the T-CON PWB and harness.
Check IC3301 and SC3801 and their
peripheral circuits in Main PWB.
NO
Check IC3301 and its peripheral circuits.
(IC3501/IC3502/IC3503/IC3504, etc.)
LC-90LE740X
No video (5)
No video at UHF/VHF broadcast signal reception
No video at digital broadcast signal reception
Is the specified TV signal selected on the input select menu screen?
Are there the IF signal at input pins(AT32/AU32)(TUN_IFN/P)
of IC3301(CPU)?
Are there the IF signal at input pins(AT32/AU32)(TUN_IFN/P) of
IC3301(CPU)?
Is there IF-AGC signal at input pin(12) of TU1104?
NO
Check the IF signal line between IC3301 and
TU1104, and their peripheral circuits.
Check the Tuner I2C lines.
NO
Check the IF signal line between IC3301 and
TU1104, and their peripheral circuits.
Check the IF-AGC line between pin(U35) of IC3301
and pin(12) of TU1104.
TU1104:pin(5)(TU_SCLK, pin(4)(TU_SDATA)
IC3301:pin(V35), pin(V34)
Check the Tuner I2C lines.
TU1104:pin(5)(TU_SCLK, pin(4)(TU_SDATA)
YES
IC3301:pin(V35), pin(V34)
YES
Is the T-CON PWB connected?
VBO_LOCKN (40pin) of SC3801 become Low if there is no problem in the connection.
YES
Are the V-By-One HS signal input to the pin of SC3801?
VBO_CN_TXA+/- (36/37pin), VBO_CN_TXB+/- (32/33pin),
VBO_CN_TXC+/- (28/29pin), VBO_CN_TXD+/- (24/25pin).
YES
Check the panel module and harness.
6 – 15
NO
Check the T-CON PWB and harness.
Check IC3301 and SC3801 and their peripheral circuits in Main PWB.
NO
Check IC3301 and its peripheral circuits.
(IC3501/IC3502/IC3503/IC3504, etc.)
LC-90LE740X
No video (6)
MHL:No external input video [INPUT-4] (using MHL Cable with Mobile Phone)
Is INPUT-4 selected on the input select menu screen?
NO
YES
Does the MHL Cable detection function?
Does the CD_SENSE signal (High level) come from pin(2) of SC1504 to
pin(69) of IC2601(HDMI-SW)?
NO
YES
Does the CBUS signal come from pin(50) of IC2601 to pin(19) of
SC1504?
NO
YES
Does the VBUS signal (5V valtage power signal) output from pin(6) of
IC1507 to pin(18) of SC1504?
NO
YES
Are there the TMDS signal at input pin(1/2)(D0-/+) of IC2601(HDMISW)?
NO
YES
Are there the TMDS signal at input pins of IC3301(CPU)?
NO
Select INPUT-4 on the input select menu screen for the right
input signal.
Check the MHL Cable.
Check the line between the pin(2) of SC1504 and the pin(69) of
IC2601.
Check the CBUS line between the pin(19) of SC1504 and the
pin(50) of IC2601, and their peripheral circuits.(Q1507, etc.)
Check the VBUS line between the pin(19) of SC1504 and the
pin(6) of IC1507, and their peripheral circuits.(IC1508, IC1509,
etc)
Check the TMDS line (between SC1504 and IC2601) and its
peripheral circuits.(IC1504, etc.)
Check the TMDS line (between IC2601 and IC3301) and its
peripheral circuits.
[IC3301 TMDS input pins]
pin(AH35/AH34)(CLK-/+),
pin(AG35/AG34)(D0-/+),
pin(AG37/AG36)(D1-/+),
pin(AF35/AF34)(D2-/+).
Check the I2C line (between IC2601 and IC3301).
IC2601:pin(71)(SCL), pin(70)(SDA)
IC3301:pin(AN12), pin(AP12)
Check IC2601 and its peripheral circuits.
YES
Is the T-CON PWB connected?
VBO_LOCKN pin(40) of SC3801 become Low if there is no problem in
the connection.
YES
Are the V-By-One HS signal input to the pin of SC3801?
VBO_CN_TXA+/-(36/37pin), VBO_CN_TXB+/-(32/33pin),
VBO_CN_TXC+/-(28/29pin), VBO_CN_TXD+/-(24/25pin).
NO
NO
YES
Check the panel module and harness.
6 – 16
Check the T-CON PWB and harness.
Check IC3301 and SC3801 and their peripheral circuits in Main
PWB.
Check IC3301 and its peripheral circuits.(IC3501/IC3502/
IC3503/IC3504, etc.)
LC-90LE740X
• Does not sound.
No audio (1)
INPUT-6 No audio.
INPUT-5 No audio.
Is INPUT-6 selected on the input select
menu screen?
Is INPUT-5 selected on the input select
menu screen?
NO
Refer to “: No external input
video [INPUT-6]”.
NO
Refer to “: No external input
video [INPUT-5]”.
YES
YES
Dose the audio signal come from pins (3)
(L) and (4) (R) of input terminal (J509) to
pins (AP37) (L) and (AR36) (R) of IC 3301
(CPU) ?
Dose the audio signal come from pins (3)
(L) and (4) (R) of input terminal (J514) to
pins (AP34) (L) and (AU36) (R) of IC 3301
(CPU) ?
NO
Check the line between J514
and IC3301.
NO
Check the line between J509
and IC3301.
YES
YES
Does the digital audio signal come from pins(AR11/AP11/AN9)(CPU_AOBCK/AOLRCK/AOSDATA0) of IC3301(CPU) to pins(6/7/5)(SP_BCLK/
SP_LRCLK/SP_DATA) of IC1703(Audio DSP)?
NO
Check the line between IC3301 and IC1703, and their paripheral circuits.
YES
• About the L/R Speakers.
Does the digital audio signal come from pins (30/21/26/27) of IC1703 (Audio DSP) to pin (5/7/8/6) of IC1902 (AMP for L/R)?
• About the Subwoofer speaker.
Does the digital audio signal come from pins (30/21/26/28) of IC1703 (Audio DSP) to pin (5/7/8/6) of IC1901 (AMP for SW)?
NO
Check IC1703 and its paripheral circuits.(X1701, etc.)
YES
• About the L/R Speakers.
Is the audio output from IC1902 as specified?
• About the Subwoofer Speaker.
Is the audio output from IC1901 as specified?
NO
• About the L/R Speakers.
Check IC1902 and its peripheral circuits.
• About the Subwoofer Speaker.
Check IC1901 and its peripheral circuits.
YES
• About the L/R Speakers.
Check the connector (P1903) L/R speakers and their peripheral circuits.
• About the Subwoofer Speaker.
Check the connector (P1904), subwoofer speaker and their peripheral circuits.
6 – 17
LC-90LE740X
No audio (2)
[PC analog audio input] INPUT-7 No audio.
[HDMI analog audio input] INPUT-2 No audio.
Is INPUT-7 selected on the input select menu screen ?
Is INPUT-2 selected on the input select menu screen?
NO
Refer to ": No external input video [INPUT-7]".
NO
Refer to “: No external input video [INPUT-2]”.
YES
Is the “Terminal Setting” - “Audio select” selected for “Video +
Audio” on the menu screen?
YES
Is the “Terminal Setting” - “Audio select” selected for “Video + Analog” on the menu screen?
NO
Set the HDMI audio output to "Video+Audio".
NO
Set the HDMI audio output to "HDMI+Analog".
YES
YES
Does the digital audio signal come from pins(AR11/AP11/AN9)(CPU_AOBCK/AOLRCK/AOSDATA0) of IC3301(CPU) to pins(6/7/5)(SP_BCLK/
SP_LRCLK/SP_DATA) of IC1703(Audio DSP)?
NO
Check the line between IC3301 and IC1703 and their peripheral circuits.
YES
• About the L/R Speakers.
Does the digital audio signal come from pins (30/21/26/27) of IC1703 (Audio DSP) to pin (5/7/8/6) of IC1902 (AMP for L/R)?
• About the Subwoofer speaker.
Does the digital audio signal come from pins (30/21/26/28) of IC1703 (Audio DSP) to pin (5/7/8/6) of IC1901 (AMP for SW)?
NO
Check IC1703 and its paripheral circuits.(X1701, etc.)
YES
• About the L/R Speakers.
Is the audio output from IC1902 as specified?
• About the Subwoofer Speaker.
Is the audio output from IC1901 as specified?
NO
• About the L/R Speakers.
Check IC1902 and its peripheral circuits.
• About the Subwoofer Speaker.
Check IC1901 and its peripheral circuits.
YES
• About the L/R Speakers.
Check the connector (P1903) L/R speakers and their peripheral circuits.
• About the Subwoofer Speaker.
Check the connector (P1904), subwoofer speaker and their peripheral circuits.
6 – 18
LC-90LE740X
No audio (3)
No audio at UHF/VHF broadcast signal reception.
No audio at digital broadcast signal reception.
Is TV selected on the input select menu screen?
Is TV selected on the input select menu screen?
NO
Refer to “No video at UHF/VHF broadcast signal
reception”.
NO
Refer to “No video at digital broadcast signal
reception”.
YES
YES
Does the digital audio signal come from pins(AR11/AP11/AN9)(CPU_AOBCK/AOLRCK/AOSDATA0) of IC3301(CPU) to pins(6/7/5)(SP_BCLK/
SP_LRCLK/SP_DATA) of IC1703(Audio DSP)?
NO
Check the line between IC3301 and IC1703, and their paripheral circuits.
YES
• About the L/R Speakers.
Does the digital audio signal come from pins (30/21/26/27) of IC1703 (Audio DSP) to pin (5/7/8/6) of IC1902 (AMP for L/R)?
• About the Subwoofer speaker.
Does the digital audio signal come from pins (30/21/26/28) of IC1703 (Audio DSP) to pin (5/7/8/6) of IC1901 (AMP for SW)?
NO
Check IC1703 and its paripheral circuits.(X1701, etc.)
YES
• About the L/R Speakers.
Is the audio output from IC1902 as specified?
• About the Subwoofer Speaker.
Is the audio output from IC1901 as specified?
NO
• About the L/R Speakers.
Check IC1902 and its peripheral circuits.
• About the Subwoofer Speaker.
Check IC1901 and its peripheral circuits.
YES
• About the L/R Speakers.
Check the connector (P1903) L/R speakers and their peripheral circuits.
• About the Subwoofer Speaker.
Check the connector (P1904), subwoofer speaker and their peripheral circuits.
6 – 19
LC-90LE740X
No audio (4)
INPUT-1 No audio (HDMI connected)
INPUT-2 No audio (HDMI connected)
INPUT-3 No audio (HDMI connected)
INPUT-4 No audio (HDMI connected or MHL connected)
[INPUT-1 input]
Is INPUT-1 selected on the input select menu screen?
[INPUT-2 input]
Is INPUT-2 selected on the input select menu screen?
[INPUT-3 input]
Is INPUT-3 selected on the input select menu screen?
[INPUT-4 input]
Is INPUT-4 selected on the input select menu screen?
YES
NO
Refer to “: No external input video [INPUT-1/2/3/4]”.
[INPUT-1 input]
If no video appears, refer to “No external input video (HDMI) [INPUT-1]”.
[INPUT-2 input]
If no video appears, refer to “No external input video (HDMI) [INPUT-2]”.
[INPUT-3 input]
If no video appears, refer to “No external input video (HDMI) [INPUT-3]”.
[INPUT-4 input]
If no video appears, refer to “No external input video (HDMI) [INPUT-4]”.
Does the digital audio signal come from pins(AR11/AP11/AN9)(CPU_AOBCK/AOLRCK/AOSDATA0) of IC3301(CPU) to pins(6/7/5)(SP_BCLK/
SP_LRCLK/SP_DATA) of IC1703(Audio DSP)?
NO
Check the line between IC3301 and IC1703 and their peripheral circuits.
YES
• About the L/R Speakers.
Does the digital audio signal come from pins (30/21/26/27) of IC1703 (Audio DSP) to pin (5/7/8/6) of IC1902 (AMP for L/R)?
• About the Subwoofer speaker.
Does the digital audio signal come from pins (30/21/26/28) of IC1703 (Audio DSP) to pin (5/7/8/6) of IC1901 (AMP for SW)?
NO
Check IC1703 and its paripheral circuits.(X1701, etc.)
YES
• About the L/R Speakers.
Is the audio output from IC1902 as specified?
• About the Subwoofer Speaker.
Is the audio output from IC1901 as specified?
NO
• About the L/R Speakers.
Check IC1902 and its peripheral circuits.
• About the Subwoofer Speaker.
Check IC1901 and its peripheral circuits.
YES
• About the L/R Speakers.
Check the connector (P1903) L/R speakers and their peripheral circuits.
• About the Subwoofer Speaker.
Check the connector (P1904), subwoofer speaker and their peripheral circuits.
6 – 20
LC-90LE740X
No audio signal at Digital Audio Output terminal (Analog sound heard)
No INPUT-1/2/3/4 (HDMI) audio.
No audio at digital broadcast signal reception.
If no video appears, refer to “No external input video (HDMI)
[INPUT-1/2/3/4]”.
If no video appears, refer to “No video at digital broadcast signal
reception”.
Is there the SPDIF signal output (CPU_ASPDIF) at pin (AR16) of IC3301 (CPU)?
NO
Check the IC3301 and its peripheral circuits.
YES
Is there the SPDIF signal (OPT_OUT) input at pin (2) of IC503 (SPDIF BUFFER & SPDIF-MUTE)?
NO
Check the line between IC3301 and IC503.
YES
Is there the MUTE signal input at pin (1) of IC503? (usual: High, Mute: Low)
NO
Check the AUDIO_MUTE and their peripheral circuits (Q505, etc.).
YES
Is there the SPDIF signal input at pin (1) of D527 (OPTICAL OUTPUT)?
YES
Check the speakers and the optical cable.
NO
Check D527 and its peripheral circuits.
No optical output under the following conditions as per HDMI requirements.
* Audio contents protected.
* Audio frequency beyond 48kHz.
* Audio bit length beyond 16bits.
6 – 21
LC-90LE740X
No monitor audio output
Are there the audio signal outputs at pins (AN34) (HP_MONITOR_L) and (AN3532) (HP_MONITOR_R) of IC3301 (CPU)?
NO
Check IC3301 (CPU) and its peripheral circuits.
YES
Does the audio signal come from pins (2) (MONI_HP_L) and (11) (MONI_HP_R) of IC1702 (Line-out Amplifier) to pins (3) (L) and (2) (R) of J504?
NO
Check the line between IC1702 and J504 and their peripheral circuits.
Check the LINE_MUTE line and its peripheral circuits(Q506/Q510, etc).
YES
Check the connector (J504) and their peripheral circuits, and speakers and the Cable.
No connect network
Does the signal come to 1pin of LAN-JACK J9401?
(see fig-1, fig-2)
YES
Does the signal come to AT18 pin of IC3301?
(see fig-2)
NO
Check the interface device and peripheral circuits.
(power-LED of hub, LINK-LED of hub)
NO
Check the line between J9401 and IC3301.
Check the LAN-JACK J9401.
YES
Check IC3301 and its peripheral circuits.
fig-1 LAN-jack J9501
fig-2
1pin
6 – 22
LC-90LE740X
CHAPTER 7. MAJOR IC INFORMATIONS Service
LC-90LE740X
Manual
[1] MAJOR IC INFORMATIONS
1. MAJOR IC INFORMATIONS
1.1. IC2601 (VHiSii9387A-1Q)
This IC is 5 input and 1 output HDMI port processor.
The TMDS cores run at 2.25Gbps. (Supports video resolutions up to 1080p, 60Hz, 12bit.)
The adaptive equalizer provides long cable support.
This IC has been pre-programmed with HDCP keys.
EDID and DDC support for 5 HDMI/DVI ports and 1 VGA port. (This IC includes 512-byte NVRAM and 256-byte SRAM for 5 HDMI ports and 128byteSRAM for VGA port.)
This IC supports the mandatory and several optional 3D formats described in the HDMI 1.4 Specification.
"Audio Return Channel" and "HDMI Ethernet Channel" support for one receiver port.
"MHL" support for resolutions up to 1080i@60Hz can be assigned to any one input port.
When changing this IC, please write EDID (how to write EDID is shown in Chapter 5 and section 10.1).
1.2. IC2004 (RH-iXD241WJNQQ)
The monitor microprocessor is intended to communicate with the main microprocessor and to operate the system.
It also controls power of the entire system.
1.3. IC1901, IC1902 (VHiYDA164EZ-1Y)
The Class-D type digital audio power amplifier YDA164EZ gives maximum continuous output of 10 W/ch or woofer output 15W.
1.4. IC3301 (RH-iXD414WJN3Q)
This LSI is FULL HIGH-DEFINITION 1080P DIGITAL TV SYSTEM-ON-A-CHIP.
It combines a transport de-multiplexer, a high definition video decoder, an AC3 audio decoder, a four-link LVDS transmitter, a V-by-One transmitter,and an NTSC/PAL/SECAM TV decoder with a 3D comb filter (NTSC/PAL).
It supports Full-HD MPEG1/2/4/H.264/DiviX/VC1/RM/AVS/VP6/VP8 video decoder standards, and JPEG.
Audio support includes a BTSC and a Dolby AC3/MPEG-2 Layer 1, 2, audio decoder.
Two SPDIF output and a pair of analog outputs (L-R) are provided.
The LSI incorporates a complete ARM Cortex-A9 dual core based microprocessor subsystem including caches with bridging to memory and a local
bus, where external peripherals can be attached.
Integrated peripherals include four USB 2.0, three UARTs, counter/timers and GPIO controllers.
It supports ATSC/DVB-T/DVB-C demodulators.
1.5. IC3501, IC3502 (RH-iXD555WJQZQ)
These are 2G-bit (128M x 16bit) DDR3-1600 synchronous DRAM.
1.6. IC3503, IC3504 (RH-iXD406WJQZQ)
These are 1G-bit (64M x 16bit) DDR3-1600 synchronous DRAM.
1.7. IC3103 (RH-iXD389WJQZQ)
The 2G-bit NAND flash memory device stores the main CPU program.
1.8. IC3104 (VHiRV2464Ai-1Y)
This is 64k-bit EEPROM device including the user setting.
1.9. IC2007 (VHiRV2402Ai-1Y)
This is 2k-bit EEPROM device stores the nomitor microprocessor setting.
1.10. IC506 (VHiM3221EiP-1Y)
This IC is a high speed, single-channel RS-232 transceiver interface device that operates from a single 3.3V power supply.
The device provides the electrical interface between an asynchronous communication controller and the serial-port connector.
This device operate at data signaling rates up to 460kbit/s.
All RS-232 (Tout and Rin) and CMOS (Tin and Rout) inputs and outputs are protected against electrostatic discharge (up to +/- 15kV ESD protection).
1.11. IC1702 (VHiAK4201EU-1Y)
This IC is audio amplifier for line-out/head-phone.
7–1
LC-90LE740X
1.12. IC1703 (VHiYSS952QZ-1Y)
Audio DSP (YSS952QZ) has digital audio adjustment function (for example, PEQ, bass/treble, balance, bass enhancer, etc.) and adjusts TVs audio
quality.
7–2
LC-90LE740X
CHAPTER 8. OVERALL WIRING/SYSTEM BLOCK DIAGRAM
LC-90LE740X
Service Manual
[1] OVERALL WIRING DIAGRAM
OVERALL WIRING DIAGRAM
J
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㪨㪚㪥㪮㪄㪤㪏㪌㪏㪮㪡㪧㪱
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㪥㪜㪫
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㪏㪇
B
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䇼㪚㪠䇽
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㪛㪬㪥㪫㪢㪞㪇㪈㪎㪁㪁㪁㪁
㪛㪬㪥㪫㪢㪞㪇㪈㪌㪁㪁㪁㪁
A
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1
2
3
4
5
6
7
8
9
10
11
8–1
12
13
14
15
16
17
18
19
LC-90LE740X
[2] SYSTEM BLOCK DIAGRAM
SYSTEM BLOCK DIAGRAM
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8–2
12
13
14
15
16
17
18
19
LC-90LE740X
PartsGuide
PARTS GUIDE
No. SY2A4LC90LE74
LCD COLOR TELEVISION
MODEL
LC-90LE740X
CONTENTS
[1]
PRINTED WIRING BOARD
ASSEMBLIES
[2]
LCD PANEL MODULE UNIT
[3]
CABINET AND MECHANICAL
PARTS
[4]
SUPPLIED ACCESSORIES/
PACKING PARTS
(NOT REPLACEMENT ITEM)
[5]
SERVICE JIG
(USE FOR SERVICING)
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
LC-90LE740X
NO.
PARTS CODE
PRICE NEW PART
RANK MARK DELIVERY
DESCRIPTION
[1] PRINTED WIRING BOARD ASSEMBLIES
!
N
N
N
N
N
N
N
DKEYMF953FMJ6
DUNTKF800FMF8
DUNTKG017FMF7
DUNTKG015FMF7
DUNTKG014FMF7
RUNTKB096WJQZ
DUNTKF975FM18
N
N
N
N
V
V
V
V
V
V
X
MAIN Unit
KEY Unit
3D IR Unit
R/C LED Unit
EMBLEM Unit
POWER/DRIVE Unit
LCD CONTROL Unit
N
V
90" LCD PANEL MODULE Unit (R1LK900D3GW10V)
CB
AY
BB
AV
AV
CD
BL
N
**
[2] LCD PANEL MODULE UNIT
N
B3KUV740X
2
LC-90LE740X
[3] CABINET AND MECHANICAL PARTS
43
20
4-5
11
44
25-1
20
39
4-4
SB
12
28
17
3-3
3-4
44
19
43
2-2
20
3-3
25
25-1
25-4
12-2 12-1
30
41
35
3-2
3-1
2-3
2-1
33
SP
2-2
SB
32
LW
RC
21
2
2-2
37
SP
G
10
3
3-3
44
19
MAIN PD
Unit
12-3
38
3-3
4-1
47
25-2
9
4-2
4-5
25-3
46
45
4-3
4-6
KEY
KM Unit
48
4
4-5
8
55
44
18
41
18
J
21
36
7
13
13
C
7
13
16
90" LCD Panel
Module Unit
1
1-14
15
15
14
16
PL
LW
42
14
16
13
16
1-1
1-14
1-8
1-14
31
R/C LED
1-8 Unit
1-8
1-6
1-1
1-14
51
RA
1-14
1-1
G
1-9 CI
1-7
EMBLEM
Unit
1-5
1-11
1-14
1-3
1-1
1-13
52
53
L2
1-14
F
1-14
1-2
54
1-15
1-4
50
49
3
PD
L2
RC
CI
KM RA
3D IR
Unit
PL
L1
L1
POWER/DRIVE
Unit
F
19
LC-90LE740X
NO.
PARTS CODE
PRICE NEW PART
RANK MARK DELIVERY
DESCRIPTION
[3] CABINET AND MECHANICAL PARTS
1
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
1-11
1-13
1-14
1-15
2
2-1
2-2
2-3
3
3-1
3-2
3-3
3-4
4
4-1
4-2
4-3
4-4
4-5
4-6
7
8
9
10
10
10
11
12
12-1
12-2
12-3
13
14
15
16
17
18
19
20
21
25
25-1
25-2
25-3
25-4
28
30
31
32
33
35
36
37
38
39
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
Not Available
CANGKD590WJ31
CDECEA044WJ31
CGRL-A013WJ32
HDECEA043WJ3A
HDECEA045WJ3A
HDECEA046WJ3A
LHLDWA289WJKZ
LHLDZB918WJ3Z
LHLDZB919WJ3Z
QCNW-N187WJPZ
XBPS830P06WS0
XBPS830P08000
PSPAGB040WJKZ
CCABBC108WJ31
Not Available
Not Available
Not Available
CCABBC109WJ31
Not Available
PSPAGB040WJKZ
Not Available
PSPAHC566WJZZ
CCABBC110WJ32
Not Available
Not Available
Not Available
Not Available
PSPAHC497WJZZ
PSPAHC566WJZZ
GCOVAE164WJ3A
GCOVAE428WJ3A
HiNDPD955WJ4A
HiNDPE814WJSA
HiNDPE815WJSA
Not Available
JBTN-A937WJ3A
CANGKD609WJ41
Not Available
Not Available
PMLT-A687WJQZ
CANGKD591WJ31
LHLDWA124WJKZ
LHLDWA151WJKZ
LHLDWA175WJUZ
LHLDWA318WJKZ
LHLDZB922WJ3Z
LX-BZA207WJF7
LX-BZA474WJF8
LX-EZA069WJF7
CSLDMB807WJ41
PMLT-A678WJQZ
PMLT-A679WJQZ
Not Available
PSPAZC740WJZZ
PSPAZC871WJKZ
QCNW-M858WJPZ
QCNW-N186WJPZ
QCNW-N188WJPZ
QCNW-N189WJPZ
RSP-ZA576WJZZ
RSP-ZA577WJZZ
RSP-ZA575WJZZ
Not Available
Not Available
XBPS830P06WS0
XBPS830P08000
XEBS830P08000
XEBS830P12000
LANGKD877WJ4A
XBPS880P16JS0
NSFTZA284WJFW
TCAUHA627WJZZ
TLABZD272WJZZ
TLABZD537WJZZ
TLABZD538WJZZ
TLABZD539WJZZ
TLABZD326WJZZ
TLABZD540WJZZ
HiNDPE737WJZZ
AX
CH
CA
CF
BY
BX
AC
AT
AR
AT
AA
AA
AD
CV
CW
AD
-
N
N
N
N
N
N
N
CW
-
N
N
N
N
N
AX
BG
AD
AD
AD
AZ
AN
AM
AK
AC
AB
AC
AD
BC
AA
AD
AB
AX
AL
AG
AF
AM
BB
AZ
AQ
AK
AT
AT
BB
AA
AA
AA
AA
AM
AE
AC
AC
AE
AU
AS
AW
AC
AF
AE
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
V
V
V
V
V
V
J
V
V
V
J
J
V
V
V
V
V
V
V
V
V
V
J
V
V
V
J
V
V
J
J
J
J
V
J
J
J
J
V
V
J
J
V
V
V
V
J
J
J
J
J
J
J
V
V
J
J
V
V
V
V
J
V
J
Decoration Frame Ass'y
Corner Angle Ass'y, x4
Decoration Frame (Low) Ass'y
Under R Grill Ass'y
Decoration Frame (Upper)
Decoration Frame ( R )
Decoration Frame ( L )
Wire Holder, x2
Holder, x3
Holder, x4
Connecting Cord (RC)
Screw, x6
Screw, x23
Spacer, x2
Rear Cabinet ( R ) Ass'y
Rear Cabinet ( R )
Himeron, x3
Himeron, x3
Rear Cabinet ( C ) Ass'y
Rear Cabinet ( C )
Himeron, x4
Himeron, x8
Spacer
Rear Cabinet (L) Ass'y
Rear Cabinet (L)
Term Ind Back
Term Ind Side
Term Ind Bottom
Himeron, x3
Himeron, x6
Bottom Cover, x2
Key Cover
REG Label (for Asia/Middle East)
Model Label (for Australia, New Zealand and Oceania)
Model Label (for Asia/Middle East)
Model Label (for Thailand)
Key Button
Terminal Angle (Bottom)
TERM Decoration Bottom
TERM Angle Bottom
Gasket
Module Fix Angle Ass'y, x16
Wire Holder, x2
Wire Holder, x2
Wire Holder, x8
Cable Clamp
Speaker Holder, x2
Screw, x13
Screw, x28
Screw, x2
Shield (MAIN)
Gasket (SIDE), x2
Gasket (TOP)
Main Shield
GASKET 9x146
Cooler (MAIN)
Connecting Cord (LV)
Connecting Cord (PD)
Connecting Cord (SP)
Connecting Cord (SB)
Speaker (L)
Speaker ( R )
Speaker (Woofer)
Back Serial Label
Side Serial Label
Screw, x4
Screw, x16
Screw, x10
Screw, x10
PREVENTION ANGLE, x2 (for Australia, New Zealand)
Screw, x2 (for Australia, New Zealand)
HEX Nut, x4
Caution Label
Tradmark Label
Pop Label SIDE
Pop Label TOP
Pop Label CORNE
Freeview Label (for New ZealanÇÑ)
Rating Label
Caution Stasnd Label (for Australia, New Zealand)
4
LC-90LE740X
[4] SUPPLIED ACCESSORIES/PACKING PARTS (NOT REPLACEMENT ITEM)
X7 Remote control unit
X9 “AAA” size battery
X5 AV cable
Stand unit
X6 Component cable
Other accessories
X4 AC cord
X1
Stand Base Ass'y
X2
Support Ass'y
• X8 Operation manual
• X10 Antenna Adaptor
• X12 Skype Information sheet
X3
Screw
X4
X5
X6
S5
S7
X2
X7
X9
X3
X12
X8
X10
S11
S7
S7
X1
S9
S10
S3
S1
S8
S9
S8
S8
S2
S6
S16
S4
5
LC-90LE740X
NO.
PARTS CODE
PRICE NEW PART
RANK MARK DELIVERY
DESCRIPTION
[4] SUPPLIED ACCESSORIES/PACKING PARTS (NOT REPLACEMENT ITEM)
X1
X2
X3
X4
X4
X4
X4
X4
X5
X6
X7
X8
X8
X8
X9
X10
X12
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S16
CDAi-A806WJ34
CANGKD276WJ07
CSAKHA050WE05
QACCZA208WJPZ
QACCBA117WJPZ
QACCKA066WJPZ
QACCLA060WJPZ
QACCZA209WJPZ2
QCNWGA171WJPZ
QCNWGA174WJPZ
RRMCGB039WJSA
TiNS-F742WJZZ
TiNS-F743WJZZ
TiNS-F744WJZZ
Not Available
QCNCWA969WJZZ
TiNS-F641WJZZ
SPAKCH088WJZZ
SPAKCH089WJZZ
SPAKFC248WJZZ
SPAKLA006WJZZ
SPAKPB923WJZZ
SPAKWA006WJZZ
SPAKXD906WJZZ
SPAKXD907WJZZ
SPAKXD908WJZZ
SPAKXD909WJZZ
SSAKA0005PEZZ
TLABV0182AJZZ
BN
AS
AL
AU
AS
AW
AP
AQ
AQ
AY
AX
BH
BH
AF
AB
BV
BE
AR
AE
AY
BY
BG
BE
BB
AR
AA
AB
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
J
J
J
V
V
V
V
V
J
J
V
V
V
V
J
J
V
V
V
J
V
V
V
V
V
V
J
J
Stand Base Ass'y
Support Ass'y, x2
Stand Screw Ass'y
AC Cord (for Thailand)
AC Cord (for Asia, Singapore/Middle East)
AC Cord (for Asia, Singapore/Middle East)
AC Cord (for Australia, New Zealand and Oceania)
AC Cord (for Asia, Singapore/Middle East)
AV cable
Component cable
Remote control unit
Operation Manual (for Australia, New Zealand and Oceania)
Operation Manual (for Asia/Middle East)
Operation Manual (for Middle East/Thailand)
"AAA" size battery, x2 (for Australia, New Zealand, Asia/Middle East)
Antenna Adaptor (for Philippines)
Skype Information Sheet (for Australia, New Zealand and Oceania)
Packing Case (Main) (NOT REPLACEMENT ITEM)
Packing Case (Bottom) (NOT REPLACEMENT ITEM)
Packing Add. (Base) (NOT REPLACEMENT ITEM)
Joint, x5 (NOT REPLACEMENT ITEM)
Wrapping Paper (NOT REPLACEMENT ITEM)
Pallet (NOT REPLACEMENT ITEM)
Packing Form (Top) (NOT REPLACEMENT ITEM)
Packing Form (Bottom) (NOT REPLACEMENT ITEM)
Packing Form (Side) (NOT REPLACEMENT ITEM)
Front Pad, x2 (NOT REPLACEMENT ITEM)
Polyethylene Bag (NOT REPLACEMENT ITEM)
Case No Label (NOT REPLACEMENT ITEM)
Connecting Cord L=1000mm 80pins, LCD Control Unit to LCD Panel Unit, x2
Connecting Cord L=1200mm 24-24-4pins, POWER Unit to LCD Control Unit/Main Unit
(PD)
[5] SERVICE JIG (USE FOR SERVICING)
N
QCNW-C222WJQZ
AW
J
N
QCNW-M539WJQZ
BC
J
6
LC-90LE740X
LC-90LE740X
COPYRIGHT © 2012 BY SHARP CORPORATION
ALL RIGHTS RESERVED.
No Part of this publication may be reproduced,
stored in a retrieval system, or transmitted in
any from or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without
prior written permission of the publisher.
Dec. 2012
YK. DS
SHARP CORPORATION
Digital Information Appliance Group
CS Promotion Center
Yaita,Tochigi 329-2193, Japan