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SERVICE MANUAL
MODEL : LAC6700R
CAR CD/MP3/WMA
RECEIVER
SERVICE MANUAL
MODEL : LAC6700R
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
P/NO : AFN35097871
OCTOBER, 2007
CONTENTS
SECTION 1 SUMMARY
SERVICING PRECAUTIONS..........................................................................................................................................1-2
ESD PRECAUTIONS .......................................................................................................................................................1-3
SPECIFICATIONS.............................................................................................................................................................1-4
SECTION 2 ELECTRICAL
ELECTRICAL TROUBLESHOOTING GUIDE & WAVEFORMS .............................................................................2-1
1. MAIN, FRONT & TUNER PART................................................................................................................................2-1
2. CD PART TROUBLESHOOTING .............................................................................................................................2-4
3. USB PART TROUBLESHOOTING...........................................................................................................................2-7
• WAVEFORMS..............................................................................................................................................................2-9
INTERNAL BLOCK DIAGRAM OF ICs......................................................................................................................2-12
1. IC518, IC701 & IC702 (S4580) ...............................................................................................................................2-12
2. IC301 (HA13173AH) ................................................................................................................................................2-12
3. IC302 (BA00CCOWFP)...........................................................................................................................................2-14
4. IC401 (µPD78F1164) ...............................................................................................................................................2-14
5. IC601 (TDA7419) .....................................................................................................................................................2-17
6. IC602 (NJM2706-DMP24) .......................................................................................................................................2-19
7. IC801 (TB2904HQ) ..................................................................................................................................................2-20
8. IC901 (LD3811) ........................................................................................................................................................2-21
BLOCK DIAGRAM .........................................................................................................................................................2-23
CIRCUIT DIAGRAMS.....................................................................................................................................................2-25
1. MAIN CIRCUIT DIAGRAM ......................................................................................................................................2-25
2. CDP 1 CIRCUIT DIAGRAM ....................................................................................................................................2-27
3. CDP 2 CIRCUIT DIAGRAM ....................................................................................................................................2-29
4. FRONT CIRCUIT DIAGRAM ..................................................................................................................................2-31
5. USB CIRCUIT DIAGRAM........................................................................................................................................2-33
6. LCD LIGHTING CIRCUIT DIAGRAM.....................................................................................................................2-34
PRINTED CIRCUIT DIAGRAMS ..................................................................................................................................2-35
1. MAIN P.C.BOARD....................................................................................................................................................2-35
2. CDP P.C.BOARD .....................................................................................................................................................2-39
3. FRONT P.C.BOARD ................................................................................................................................................2-40
4. USB P.C.BOARD......................................................................................................................................................2-41
5. LCD LIGHTING P.C.BOARD...................................................................................................................................2-41
SECTION 3 EXPLODED VIEWS
1. CABINET AND MAIN FRAME SECTION ................................................................................................................3-1
2. MECHANISM(PICK-UP) SECTION..........................................................................................................................3-3
SECTION 4 REPLACEMENT PARTS LIST.............................................................4-1
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1-1
LGE Internal Use Only
SECTION 1 SUMMARY
SERVICING PRECAUTIONS
1. Always disconnect the power source before:
1) Removing or reinstalling any component, circuit board, module or any other instrument assembly.
2) Disconnecting or reconnecting any instrument electrical plug or other electrical connection.
3) Connecting a test substitute in parallel with an electrolytic capacitor in the instrument.
CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an
explosion hazard.
2. Do not defeat any plug/socket B+ voltage interlocks with which instruments covered by this service
manual might be equipped.
3. Do not apply power to this instrument and or any of its electrical assemblies unless all solid-state
device heat sinks are correctly installed.
4. Always connect a test instrument’s ground lead to the instrument chassis ground before connecting
the test instrument positive lead. Always remove the test instrument ground lead last.
1) The service precautions are indicated or printed on the cabinet, chassis or components. When servicing,
follow the printed or indicated service precautions and service materials.
2) The Components used in the unit have a specified conflammability and dielectric strength. When replacing
any components, use components which have the same ratings. Components marked in the circuit diagram
are important for safety or for the characteristics of the unit. Always replace with the exact components.
3) An insulation tube or tape is sometimes used and some components are raised above the printed writing
board for safety. The internal wiring is sometimes clamped to prevent contact with heating components.
Install them as they were.
4) After servicing always check that the removed screws, components and wiring have been installed correctly
and that the portion around the service part has not been damaged. Further check the insulation between
the blades of attachment plug and accessible conductive parts.
LGE Internal Use Only
1-2
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
ESD PRECAUTIONS
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called electrostatically sensitive devices (ESD). Examples of typical ESD devices are
integrated circuits and some field-effect transistors and semiconductor chip components. The following
techniques should be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain
off any electrostatic charge on your body by touching a know earth ground. Alternatively, obtain and
wear a commercially available discharging wrist strap device, which should be removed for potential
shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive
surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static"
can generate electrical charges sufficient to damage ESD devices.
5. Do not use freon-propelled chemicals These can generate electrical charges sufficient to damage ESD
devices.
6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together
by conductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch
the protective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL
OTHER SAFETY PRECAUTIONS.
8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless
motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor
can generate static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL. WITHIN AN EQUILATERAL
TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE
OF UNINSULATED "DANGEROUS VOLTAGE" THAT MAY BE OF SUFFICIENT
MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENED TO
ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY
INFORMATION IN SERVICE LITERATURE.
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1-3
LGE Internal Use Only
SPECIFICATIONS
• GENERAL
Output Power
Power Source
Speaker impedance
Ground System
Dimensions (W x H x D)
Net Weight
50W x 4CH (Max.)
DC 12V
4Ω
Negative
180 x 51 x 171mm (Without Control Panel)
2.0kg
• CD SECTION
Frequency Response
S/N Ratio
Distortion
Channel Separation (1kHz)
20Hz ~ 20kHz
85dB
0.05%
60dB
• RADIO SECTION
FM
Frequency Range
S/N Ratio
Distortion
Usable Sensitivity
65 ~ 74, 87.5 ~ 107.9 or 87.5 ~ 108MHz
53dB
0.7%
12dBµV
AM (MW)
Frequency Range
S/N Ratio
Distortion
Usable Sensitivity
520 ~ 1720 or 522 ~ 1620kHz
45dB
1.0%
28dBµV
• USB SECTION
Version
USB 1.1
LGE Internal Use Only
1-4
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
SECTION 2 ELECTRICAL
ELECTRICAL TROUBLESHOOTING GUIDE & WAVEFORMS
1. MAIN, FRONT & TUNER PART
No
Symptom
Check Point
Location No.
SYSTEM CONTROL
1
No Power
2
Not available Remocon
3
4
Not available to Volume control
Not available to Key Control
5
No sound
* Power IC
: Refer to next page
6
No Line out signal
Checked the Fuse.
Checked the Back up Vdd, Gnd.
Checked the Micom Back Up Vdd.
Checked the Micom Ground.
Checked the Reset.
Checked the X-tal.
Checked the ACC in.
Checked the detachable switch.
Checked the flipdown Detector.
Checked the Key line.
Checked the Remocon Sens Vdd.
Checked the Remocon Sens line.
Checked the Encoder Volume.
Checked Tact switch.
Checked Key line.
Checked the E-VR Vdd.
Checked the E-VR Ground.
Checked the E-VR control.
Checked the E-VR Signal in/out.
Checked
Checked
Checked
Checked
Checked
the
the
the
the
the
E-VR Mute Control
Power IC Vdd.
Power IC Ground.
Power IC Control.
Power IC Signal in/out.
Checked
Checked
Checked
Checked
Checked
Checked
Checked
Checked
the
the
the
the
the
the
the
the
Power IC Mute.
Power IC Standby.
Power IC Ripple.
Main Connector.
E-VR Vdd.
E-VR Ground.
E-VR control.
E-VR Signal in/out.
Checked the OPAMP Vdd.
Checked the OPAMP Ground.
Checked the OPAMP Signal in/out
Checked the Line out Mute circuit
Check the Line out Jack
8 Heard Pop Noise
Checked the Mute Control.
Checked the AF Mute.
9 Not avaliable to Telephone Mute Checked the telephone Mute Control.
Checked the Mute Control.
10 Not avaliable to ANT(Motor Type) Control Checked the ANT Control.
11 Not avaliable to Remote
Checked the Remote control.
(External AMP)
12 No output Beep sound.
Checked the Beep Control.
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-1
CN801
CN801(16, 15)
IC301(14),D307, IC401(30,47,50,99,100)
IC401(20,51,97,98)
IC402. IC401(90)
X401, X402
Q301,Q302, IC401(38), CN801(14)
SW401, IC401(73)
CN901(19), IC401(74)
IC401(52,53)
CN901(14),Q316,Q317,D307
RM901, IC401(5)
SW901, IC401(40,41)
SW902 ~ SW918
IC410(52,53)
IC301(10),IC601(24)
IC601(15)
IC601(22,23), IC401(1,2)
IC601(5,6,7,8,9,10,11,13)
IC601(17,18,19,20)
IC601(21), IC401(6)
IC801(6, 20)
IC801(1, 2, 8, 13, 18, 24)
IC801(4, 22), IC401(3,10)
IC801(11,12, 14, 15)
IC801(3,5,7,9,17,19,21,23)
IC801(22)
IC801(4)
IC801(10)
CN801(1,2, 3, 4, 8, 9, 12, 13)
IC301(10),IC601(24)
IC601(15)
IC601(22,23), IC401(1,2)
IC601(5,6,7,8,9,10,11,13)
IC601(17,18,19,20)
IC701(8),IC702(8)
IC701(4),IC702(4)
IC701(3,5,7,1)
IC702(3,5,7,1)
Q705,IC401(48)
CN703
IC601(21), IC801(4, 22), IC401(3,6,10)
TU101(19), IC401(4)
CN801(5), Q305,Q306, IC401(62)
IC601(21), IC801(4, 22), IC401(3,6,10)
IC301(12,13),IC401(87)
CN801(6), IC402(1,2,4),Q308,Q309
IC401(63,64)
IC401(80), BU301
LGE Internal Use Only
CAUTION - Tip for repair
Before exchange power amp IC(TB2904) for no audio problem, you have to check
below list.
20
VCC1
6
VCC2
OUT1 (+)
3. Check Standby, pin 4
: Follow the below list.
C1
11
PW-GND1 8
OUT2 (+)
C1
Stand-by
Power
Sound
Voltage
ON
OFF
OFF
0 to 1.5
OFF
ON
ON
3.5 to 6V
12
C1
Voltage
ON
OFF
0 to 1.5
15
OFF
ON
3.5 to 6V
14
RL
19
21
PW-GND4 24
RL
23
13
RIP
STBY
10
4
C2
6. Re-soldering all the pin of IC.
: Prevent crack of solder line.
17
IN4
OUT4 ( - )
PRE-GND
3
PW-GND3 18
OUT3 ( - )
C1
RL
IN3
OFF-SET
MUTE
DET
25
22
C4
Sound
5
16 AC-GND
OUT4 (+)
Mute
7
PW-GND2 2
OUT3 (+)
5. Check Ripple pin 10.
: Normally it is high (about 10V)
RL
IN2
OUT2 ( - )
C6
9
IN1
OUT1 ( - )
4. Check Mute function, pin 22
: Follow the below list.
C3
1
TAB
2. Check input pin 11, 12, 14, 15
C5
1. Check VCC (pin 20, 6) & GND
5V
PLAY
R1
MUTE
: PRE-GND
* Keep changed IC, We request that you send it to HQ.
: PW-GND
Picture 1) Power IC desc.
LGE Internal Use Only
2-2
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
No
Symptom
Check Point
Location No.
DISPLAY & LIGHTING
1
No Display or
Some Display is broken
Checked the LCD DRV Vdd.
Checked the LCD DRV Ground.
Checked the LCD DRV OSC.
Checked the LCD DRV control.
2
No LCD Lighting or
Color is different
3
Not avaliable to LCD Lighting
control
4
No Key Lighting
5
6
Don't moved Level bar
Not avaliable to Dimmer control
No
Symptom
Checked the LCD DRV to LCD Pattern.
Checked the LCD Lighting VDD.
Checked the LED.
Checked the LCD Lighting Control.
Checked
Checked
Checked
Checked
Chekced
the
the
the
the
the
LED.
LED Lighting Vdd.
LED.
Level Meter control.
Dimmer control.
Check Point
Q322,Q316,Q317
IC901(69,70,71,72,73)
IC901(74)
IC901(75,76)
IC401(75,79,85,86),
IC901(77,78,79,80)
IC901(1 ~ 68)
Q319,Q320,Q322,IC301(4,9)
IC401(64)
LD991, LD992
CN801(11),Q303,Q304,Q321,
IC401(58)
LD991,LD992
IC301(4,9),IC401(64)
LD901 ~ LD921
IC601(25,26),IC401(9,54)
CN801(11),Q303,Q304,IC301(4,9)
Location No.
TUNER FUNCTION
1
Not available to Tuner
Checked the Tuner Vdd.
Checked the Tuner Ground.
Checked the PLL data.
2
Tuner no sound
3
Not available to RDS
Checked
Checked
Checked
Checked
Checked
Checked
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
the RF signal in.
the S-Meter control.
the SD & ST IND.
the Tuner Signal out.
the AF mute.
the RDS data.
2-3
TU101(4,16),IC301(10),IC401(39)
Q350,Q351
TU101(3, 5,10,17)
TU101(11,12,13,14,15)
IC401(67,68,44,45,46)
TU101(1, 2)
TU101(7)
TU101(6)
TU101(8,9), IC601(5,6)
TU101(19), IC401(4)
TU101(20,21), IC401(65,83)
LGE Internal Use Only
2. CD PART TROUBLESHOOTING
Something wrong with the CD player?
A
B
C
No loading?
YES
Checked the CD Vdd?
NO
CN510(13, 6)
YES
Checked the CD DSP ground?
NO
IC506(26, 32, 47, 78, 18)
YES
Checked the motor DRV
VDD?
NO
IC504(7, 8, 20)
YES
Checked the CD DSP reset?
NO
IC506(72)
YES
Checked the CD DSP X-tal?
NO
X503
YES
Checked the disc in
load switch?
NO
PN504(3)
Fig 1, 2
YES
Checked the loading
motor control?
NO
Fig 3, 4
CN510(12, 17)
IC513(12, 14, 15)
YES
Checked the 8/12cm
sens switch?
NO
PN504(1)
Fig 1, 2
YES
OK
LGE Internal Use Only
2-4
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
A
No reading & "FILE CHECK"
DISPLAY?
YES
Checked the limit switch?
NO
Fig 1, 2
PN504(4)
YES
Checked the motor DRV
mute control?
NO
CN510(16)
YES
Checked the motor
LD control?
NO
Fig 3, 4
D5, D6
YES
Checked the CD DSP control?
NO
Fig 10~12
IC506(67, 68, 69, 70, 71)
YES
Checked the focus control?
NO
Fig 5
IC506(25)
IC513(17, 18)
YES
Checked the focus error
level out.(FE mon)?
NO
Fig 5
IC506(25)
R517
YES
Checked the PLL locking.
(FSEQ)?
NO
Fig 9
IC506(54)
YES
Checked the RF signal
out check?
YES
NO
Checked the spindle
motor control?
NO
Fig 9
Fig 7
IC506(41, 16)
IC506(21)
IC513(8, 5)
YES
Checked the TRVP control?
NO
Fig 13
PN504(5, 6)
YES
Checked the tracking control?
NO
Fig 6
IC506(24)
IC513(19, 20)
YES
OK
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-5
LGE Internal Use Only
B
CD no sound?
YES
Checked the DAC signal in?
NO
IC520(1, 2, 3)
Fig 8
YES
OK
C
No ejected the CD?
YES
Checked the Eject key?
NO
CN901(16) [MAIN]
YES
Checked the loading motor
control?
NO
D6, D5
Fig 3, 4
YES
OK
LGE Internal Use Only
2-6
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. USB PART TROUBLESHOOTING
Something wrong with the USB?
D
Only "NO USB" or "USB CHECK" display?
YES
Checked the USB Vdd?
NO
IC512(2), L507, L508, L509, R566
YES
Checked the USB
interface IC ground?
NO
IC511(17, 37, 40, 61, 71)
YES
Checked the memory
IC ground?
NO
IC505(24)
YES
Checked the USB
interface IC reset?
NO
IC511(57), CN510(31)
YES
Checked the USB
interface IC X-tal?
NO
X505
YES
Checked the Flash
memory option port?
NO
IC511(65)
YES
Checked the D+/D- port?
NO
Fig 14
IC511(62, 63)
YES
Checked the USB
indication port?
NO
IC511(27)
YES
Checked the USB
interface IC control?
NO
IC506 (62, 63, 64)
YES
OK
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-7
LGE Internal Use Only
D
"FILE CHECK" display?
YES
Checked the CD DSP ground?
NO
IC506(26, 31, 57, 60, 79 )
YES
Checked the CD DSP reset?
NO
IC506(72)
YES
NO
X503
Checked the CD DSP X-tal?
YES
Checked the CD DSP control?
NO
Fig 10~12
IC506(67, 68, 69, 70, 71, 72, 73)
YES
Checked the USB data?
NO
IC511(22, 23) IC510(50, 51)
YES
OK
YES
USB no sound?
YES
Checked the CD DSP
signal out?
NO
IC520(1, 2, 3)
Fig 8
YES
OK
LGE Internal Use Only
2-8
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
• WAVEFORMS
Fig 1) Switching condition for loading
Fig 2) Switching condition for unloading
LOADING
LOADING
12/8 S/W
LIMIT S/W
12/8 S/W
PN504:[PIN3]
PN504:[PIN1]
PN504:[PIN4]
PN504:[PIN3]
PN504:[PIN1]
PN504:[PIN4]
LIMIT S/W
Fig 3) Motor control signal for loading
SL-
REW
SL+
FEW
SLED CON
D6:[REW]
D5:[FEW]
R5091:[SLED CON]
R5465:[LOAD IN]
LOADING IN
SLED CON
LOADING IN
PIN504:[PIN5]
PIN504:[PIN6]
R5091:[SLED CON]
R5465:[LOAD IN]
Fig 4) Motor control signal for unloading
REW
SL-
FEW
SL+
SLED CON
LOADING IN
D6:[REW]
D5:[FEW]
R5091:[SLED CON]
R5465:[LOAD IN]
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-9
SLED CON
LOADING IN
PIN504:[PIN5]
PIN504:[PIN6]
R5091:[SLED CON]
R5465:[LOAD IN]
LGE Internal Use Only
Fig 5) Focus control signal
Fig 6) Tracking control signal
FOP
TRP
F+
T+
T-
F-
PN504:F-[PIN1]
IC506:FOP[R511]
R517:FE
PN506:F+[PIN4]
FE
Fig 7) Spindle control signal
TE
IC506:TRP[R5013]
PN504:T+[PIN2]
PN506:T-[PIN3]
R517:TE
Fig 8) LRCK, BCK, DATA from DAC
PLLF
BCK
SP+
SPSPOUT
IC506:PLLF:[PIN54]
PN504:SP+:[PIN7]
PN504:SP-[PIN8]
IC506:SPOUT[PIN21]
DATA
IC520:[PIN1]
IC520:[PIN2]
IC520:[PIN3]
LRCK
Fig 9) PD, RFOUT
Fig 10) CLK, REQ & DATA
CLK
PD/MD
RFOUT
IC506:[PD41]
IC506:[RFOUT46]
LOADING IN
LGE Internal Use Only
REQ
IC511:[PIN52]
IC511:REQ[PIN53]
IC511:DATA[PIN54]
DATA
2-10
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Fig 11) MLD, MDATA & MCLK
MLD
MLD
IC510:MLD
[PIN58]
IC510:MCLK
[PIN70]
IC510:MDATA
[PIN72]
MCLK
MDATA
MCLK
MDATA
IC510:MLD
[PIN58]
IC510:MCLK
[PIN70]
IC510:MDATA
[PIN72]
Fig 12) STAT, MDATA & NRST
NRST
NRST
IC510:NRST
[PIN57]
IC510:STAT
[PIN71]
IC510:MDATA
[PIN48]
STAT
STAT
MDATA
MDATA
Fig 13) SLED control
Fig 14) USB D+, D- signal
SLSL+
SL+
TRVP
IC510:NRST
[PIN57]
IC510:STAT
[PIN71]
IC510:MDATA
[PIN48]
D-
R504:[PIN5]
PN504:[PIN6]
R5091:[SLED CON]
R5465:[LOAD IN]
D+
UART RX
PN503:PIN3 [D-]
PN503:PIN2 [D+]
R560:UART RX
R562:UART TX
UART TX
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-11
LGE Internal Use Only
INTERNAL BLOCK DIAGRAM OF ICs
1. IC518, IC701 & IC702 (S4580)
1-1. BLOCK DIAGRAM
2. IC301 (HA13173AH)
2-1. BLOCK DIAGRAM
+B
DBUP
VB
8
Over voltage detect
3.5V
CTL 1
11
BIAS
1.5V
CTL 2
15
C1
100uF
C2
0.1uF
VBUP
CBUP
100uF
TSD
13
VREF
2.5V
CTL 3
9
14
VDDOUT
CVDD
10uF
2.5V
CTL 4
5
2.5V
7
DSPOUT
CDSP
10uF
DEXT1 EXTOUT
12
DEXT2
VREF
CEXT
10uF
ILMOUT
CDOUT
6
CCD
0.1uF
VREF
4
CILM
0.1uF
10
FREG B
CAUDIO
10uF
2
QFREG
RFREG3
CFREG
10uF
AUDIOOUT
3
1
FREG F
GND
TAB
GND
RFREG1
RFREG2
LGE Internal Use Only
2-12
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-2. PIN FUNCTION (Note1)
Protection function
Pin No.
Pin name
Function
Normal
operation
(Note2)
(Note3)
(Note3)
1
GND
Ground
-
TSD On
-
2
FREG_B
External Trs bass drive (Note4)
On/Off
On/Off
Off
Off
3
FREG_F
FREG feedback terminal
On/Off
On/Off
Off
Off
4
ILMOUT
8.4V output for JLM/500mAmax
On/Off
Off
Off
Off
5
CTL4
FREG control terminal
-
-
-
-
6
CDOUT
8.0V output for CD/1.3Amax (Note4)
On/Off
Off
Off
Off
7
DSPOUT
3.3V output for DSP/250mAmax (Note4)
On/Off
Off
Off
Off
8
VB
Battery
-
-
-
-
9
CTL3
ILM control terminal
10
AUDIOOUT
8.4V output for AUDIO/500mAmax (Note4)
11
CTL1
DSP, CD, Audio control terminal
12
EXTOUT
High side output/600mAmax (Note4)
13
CTL2
EXT control terminal
14
VDDOUT
5.7V output for micro controller (Note4)
15
VBUP
Back up
VB=24V
-
VB=50V
-
-
-
-
-
On/Off
Off
Off
Off
-
-
-
-
On/Off
Off
Off
Off
-
-
-
-
On
On
On
Off
-
-
-
-
Note1. In the uper table. “On” means always On. “Off” means compulsory Off and “On/Off” means that it can control by control
terminal.
Note2. Thermal protection circuit
A built-in thermal protection circuit (TSD:Thermal shut down) prevents thermal damage to the IC. All outputs except
VDD(pin14) and FREG (pin2&3) are switched off when the circuit operates, revert to the original state when the
temperature drops to a certain level.
Note3. Overvoltage protection circuit
The overvoltage protection circuit (surge protector) turns off all outputs without Vdd, when VB voltage is more than
about 21V. And the overvoltage protection circuit (surge protector) turns off Vdd output with other all outputs, when
VB voltage is more than about 26V. When the overvoltage protection operates on VB>=18V condition, the stand by
current increases.
Note 4. Overcurrent protection circuit
FREG_B (pin2), ILMOUT (pin4), CDOUT (pin6), DSPOUT (pin7), AUDIOOUT (pin10), EXITOUT (pin12), VDDOUT
(pin14) output circuits are built-in overcurrent protection circuit based on the respective output current. These
overcurrent protection circuits limit the current with a curve shape of “7” in the voltage-current graph. This prevents IC
destruction due to overcurrent.
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-13
LGE Internal Use Only
3. IC302 (BA00CCOWFP)
3-1. BLOCK DIAGRAM
3-2. PIN NO., PIN NAME
4. IC401 (µPD78F1164)
4-1. PIN CONFIGURATION
PEXLVI(I)
PFLMD0_CTR(O)
PRDS_CLK(I)
PFRT_DO(O)
PFRT_DI(I)
PFRT_CLK(O)
PANT(O)
DOWNLOAD_CLK
DOWNLOAD_IO
RESET
SUB_CLK(32.768Khz)
SUB_CLK(32.768Khz)
FLMD0
X’TAL(19.2,Mhz)
X;TAL(19.2Mhz)
REGC
Vss
EVss
Vdd
EVdd
PEV_CLK(O)
PEV_CE(O)
PPWR_MUTE(O)
PAF_MUTE(O)
PRMC(I)
PSOFT_MUTE(O)
PEALA_SW1(O)
PEALA_SW2(O)
PSPEC_CLK(O)
PSTANDBY(O)
PDECK_LD(I)
PCDP_BLK(I)
PCDP_VDET(I)
PCDP_POWER(O)
PDECK_INN(I)
PDECK_12/8(I)
PSLED_CTRL(O)
PRCP_FEW(O)
PCDP_REW(O)
EVss1
PDRV_MUTE(O)
PDAC_MUTE(O)
PCDP_RST(O)
PCDP_MLD(O)
PZERO_MUTE(I)
PISP(O)
PUSB_POWER/PBT_POWER(O)
uPD78F1164
PUSB_SW(I)
PUSB_RESET(O)
EVdd1
PBEEP(O)
PFRT_CE(I)
PCDP_CLK(O)
PCDP_DI(I)
PCDP_DO(O)
PFRT_RST(O)
PFRT_OPEN(I)
PFRT_DETECT(I)
PART_TX(O)
PART_RX(I)
PART_EN(I)
PSD_ST(I)
PPLL_CE(O)
PEEPROM_CE(O)
PDIM_IN(I)
PRDS_DI(I)
PPWR(O)
PREMOTE(O)
PTEL_MUTE(I)
PAUDIO_MUTE(O)
PAUX_MUTE(O)
PLIGHT(O)
PDIM_OUT(O)
PEJECT(I)
PQUALTY(I)
PSMETER(I)
PLEVEL_METER(I)
PKEY2(I)
PKEY1(I)
AVss
AVref0
PTUNER_MUTE(O)
PLINE_MUTE(O)
AVref
PPLL_CLK(I)
PPLL_DI(I)
PPLL_DO(O)
PUSB_TX/PBT_TX(O)
PUSB_RX/PBT_RX(I)
PVOLB(I)
PVOLA(I)
PACC_OUT(O)
PACC_IN(I)
POPT_OUT2(O)
POPT_OUT1(O)
POPT_OUT0(O)
POPT_IN2(I)
POPT_IN1(I)
POPT_IN0(I)
PUSB_PROTECT(I)
LGE Internal Use Only
2-14
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4-2. PIN DESCRIPTION
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
Name in Micom
P60/SCL0
P61/SDA0
P62
P63
P31/TI03/TO03/INTP4
P64/RD'
P65/WR0'
P66/WR1'
P67/ASTB
P77/EX23/KR7/INTP11
P76/EX22/KR6/INT10
P75/EX21/KR5/INT9
P74/EX20/KR4/INTP8
P73/EX19/KR3
P72/EX18/KR2
P71/EX17/KR1
P70/EX16/KR0
P06/WAIT'
P05/CLKOUT
EVSS1
P80/EX0
P81/EX1
P82/EX2
P83/EX3
P84/EX4
P85/EX5
P86/EX6
P87/EX7
P30/INTP3/RTC1HZ
EVDD1
P50/EX8
P51/EX9
P52/EX10
P53/EX11
P54/EX12
P55/EX13
P56/EX14
P57/EX15
P17/EX31/TI02/TO02
P16/EX30/TI01/TO01/INTP5
P15/EX29/RTCDIV/RTCCL
P14/EX28/RxD3
P13/EX27/TxD3
P12/EX26/SO00/TxD0
P11/EX25/SI00/RxD0
P10/EX24/SCK00'
47
AVREF1
48
49
P110/ANO0
P111/VNO1
50
AVREF0
Name in Model
PEV_CLK
PEV_DE
PPWR_MUTE
PAF_MUTE
PRMC
PSOFT_MUTE
PEALA_SW1
PEALA_SW2
PSECP_CLK
PSTANDBY
PDECK_LD
PCDP_IBLK
PCDP_VDET
PCDP_POWER
PDECK_INN
PDECK_12/8
PSLED_CTRL
PCDP_FEW
PCDP_REW
PDRV_MUTE
PDAC_MUTE
PCDP_RST
PCDP_MLD
PZERO_MUTE
PISP
PUSB_POWER(PBT)
PUSB_SW
PUSB_RESET
PUSB_PROTECT
POPT_IN0
POPT_IN1
POPT_IN2
POPT_OUT0
POPT_OUT1
POPT_OUT2
PACC_IN
PACC_OUT
PVOLA
PVOLB
PUSB_RX/PBT_RX
PUSB_TX/PBT_TX
PPLL_DO
PPLL_DI
PPLL_CLK
Enable I/O I/O setted Output Format
I/O
O
N-CH
I/O
O
N-CH
I/O
O
N-CH
I/O
O
N-CH
I/O
I
I/O
O
CMOS
I/O
O
CMOS
I/O
O
CMOS
I/O
O
CMOS
I/O
O
CMOS
I/O
I
I/O
I
I/O
I
I/O
O
CMOS
I/O
I
I/O
I
I/O
O
CMOS
I/O
O
CMOS
I/O
O
CMOS
I/O
O
CMOS
I/O
O
CMOS
I/O
O
CMOS
I/O
O
CMOS
I/O
I
I/O
O
CMOS
I/O
O
CMOS
I/O
I
I/O
O
CMOS
I/O
I
I/O
I/O
I
I/O
I
I/O
O
CMOS
I/O
O
CMOS
I/O
O
CMOS
I/O
I
I/O
O
CMOS
I/O
O
CMOS
I/O
O
CMOS
I/O
I
I/O
O
CMOS
I/O
O
CMOS
I/O
I
I/O
O
CMOS
-
PLINE_MUTE
PTUNER_MUTE
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
I/O
I/O
O
O
-
2-15
CMOS
CMOS
Description
Clock output to TDA7419 for the volume control
Data output to TDA7419 for the volume control
To Power amp, "MUTE" command output
AF mute
Remocon input
Direct volume mute signal output
EALA control output 1
EALA control output 2
Spectrum analyze clock output to TDA7419
To PowerR amp, "STAND-BY" command output
Deck load SW
SubQ ack
Vibration detection
CDP power on
Deck inner SW
Deck 2cm disc detect SW
Deck sled/Loading motor selector
Loading motor loading
Loading motor unloading
Ground Potential for Ports
Deck driver IC mute
DAC mute
CDP reset
DSP ACK
DAC zero mute monitor
USB Flash upgrade enable
USB power on/BT power on(3.3V Ctrl)
USB device detect sw
OTG reset
Positive power supply for ports
Protection IC overcurrent detection
For diode option check, signal 1 or 2 input0
For diode option check, signal 1 or 2 input1
For diode option check, signal 1 or 2 input2
For diode option check, signal 1 output
For diode option check, signal 2 output
For diode option check, signal 3 output
ACC in
ACC out
Encoder volume terminal #A input
Encoder volume terminal #A input
Data input for USB/BT
Data output for USB/BT
Data output for PLL IC
Data input for PLL IC
CLK output for PLL IC
• A/D converter reference voltage input
• Positive power supply for P20 to P27, P150 to
P157, and A/D converter
Line out mute
Tuner <----> VR IC mute
• D/A converter reference voltage input
• Positive power supply for P110, P111, and D/A converter
LGE Internal Use Only
Pin
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
Name in Micom
AVSS
P157/ANI15
P156/ANI14
P155/ANI13
P154/ANI12
P153/ANI11
P152/ANI10
P151/ANI9
P150/ANI8
P27/ANI7
P26/ANI6
P25/ANI5
P24/ANI4
P23/ANI3
P22/ANI2
P21/ANI1
P20/ANI0
P130
P131/TI06/TO06
P04/SCK10'/SCL1
P03/SI10/RxD1/SDA1
P02/SO10/TXD1
P01/TO00
P00/TI00
P145/TI07/TO07
P144/SO20/TxD2
P143/SI20/RxD2/SDA2
P142/SCK20'/SCL2
P141/PCLBUZ1/INTP7
P140/PCLBUZ0/INTP6
P120/INTP0/EXLVI
PKEY1
PKEY2
PLEVEL_METER
PSMETER
PQUALTY
PEJECT
PDIM_OUT
PLIGHT
PAUX_MUTE
PAUDIO_MUTE
PTEL_MUTE
PREMOTE
PPWR
PRDS_DI
PDIM_IN
PEEPROM_CE
PPLL_CE
PSD_ST
PART_EN
PART_RX
PART_TX
PFRT_DETECT
PFRT_OPEN I/O
PFRT_RST
PCDP_DO
PCDP_DI
PCDP_CLK
PFRT_CE
PBEEP
PEXLVI
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
I/O
I/O
I/O
I/O
I/O
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
I
I
I
O
O
O
O
O
O
O
I
I
O
O
I
O
I
I
I
O
O
I
O
I
O
I
82
P47/INTP2 PFLMD0_
CTR
I/O
O
CMOS
83
84
85
86
87
88
P46/INTP1/TI05/TO05
P45/SO01
P44/SI01
P43/SCK01'
P42/TI04/TO04
P41/TOOL1
PRDS_CLK
PFRT_DO
PFRT_DI
PFRT_CLK
PANT
Download_CLK
I/O
I/O
I/O
I/O
I/O
I/O
I
O
I
O
O
-
CMOS
CMOS
CMOS
-
89
P40/TOOL0
Download_IO
I/O
-
-
90
91
92
93
94
95
96
97
98
99
100
RESET'
P124/XT2
P123/XT1
FLMD0
P122/X2/EXCLK
P121/X1
REGC
VSS
EVSS0
VDD
EVDD0
I
I
I
I
-
I
I
-
I
I
-
LGE Internal Use Only
Name in Model
-
Enable I/O I/O setted Output Format
2-16
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
-
Description
Key #1 line input
Key #2 line input
Level meter input
Radio station's strength signal input
Connect to tuner pack QUALITY
Eject key input
Dimmer output
Backlight control output
AUX mute
VR IC <--> PWR AMP mute
Telephone mute input
External amp on
Power on
From tuner pack, RDS data input
Dimmer input
EEPROM Chip select
PLL chip select
SD level input from Tuner pack
ART Enable input
Data input for ART
Data output for ART
Front detaching/attaching detect
Front open/close detect
Front micom(LCD drv) reset
Data output for CDP
Data input for CDP
CLK output for CDP
Data enable output to front micom(LCD drv)
CMOS Buzzer output
Low voltage detector(Connect to Vdd)
Disc download FLMD0 control(Connect to
FLMD0(Pin93))
From tuner pack, RDS data input
Data output to front micom(LCD drv)
Data input from front micom(LCD drv)
CLK output to front micom(LCD drv)
Antena control output
CLK for onboard debugger
Data I/O for flash memory programmer
(Pull-up register(10K))
System reset input
Sub clock 32.768 KHz
Sub clock 32.768 KHz
Flash memory programming mode setting
X-tal 19.2 MHz
X-tal 19.2 MHz
Connect to VSS via a capacitor (0.47 to 1µF)
Ground
Ground Potential for Ports
Positive power supply (+5V)
Positive power supply (+5V) For Ports
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. IC601 (TDA7419)
5-1. PIN CONFIGURATION
ACOUTR/AC2OUTR
1
28
MIX/OUTSW/OUTRR2
ACINR/FILOR
2
27
VREF
ACINL/FILOL
3
26
SAOUT
ACOUTL/AC2OUTL
4
25
SAIN
SE3L/ACINL
5
24
VDD
SE3R/ACINR
6
23
SDA
SCL
SE2L
7
22
SE2R
8
21
MUTE
SE1L
9
20
OUTLF
SE1R
10
19
OUTLR
DIFFL
11
18
OUTRR
DIFFG
12
17
OUTRF
DIFFR
13
16
OUTSW/OUTLR2
CREF
14
15
GND
D04AU1569
5-2. BLOCK DIAGRAM
SAOUT
SACLK
ACOUTL/
AC2OUTL
MUTE
ACOUTR/
AC2OUTR
ACINL/
FILOL
ACINR/
FILOR
Spectrum
Analyzer
DIFFL
DIFFG
InGain
AutoZero
DIFFR
Loudness
SoftMute
Softstep
Volume
Treble
Middle
Softstep
MonoFader
Bass
SE1L
Softstep
MonoFader
INPUT
HPF
HPF
Mix
OUTLF
Mix
OUTRF
SE1R
MULTIPLEXER
SE2L
InGain
Softstep
MonoFader
OUTLR
Softstep
MonoFader
OUTRR
SE2R
Softstep
MonoFader
Subwoofer
LPF
Softstep
MonoFader
SUPPLY
VDD
GND CREF
DIGITAL CONTROL
VREFOUTF
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
OUTSW/
OUTLR2
MIX/
OUTSW/
OUTRR2
I2C BUS
SCL
SDA
2-17
AC2INL/
SE3L
AC2INR/
SE3R
LGE Internal Use Only
5-3. PIN DESCRIPTION
Pin
N#
Pin Name
1
ACOUTR / AC2OUTR
AC coupling right output / HPF filter AC2OUT right channel
O
2
ACINR / FILOR
AC coupling right input / HPFfilter FILO right channel
I/O
3
ACINL / FILOL
AC coupling left input / HPF filter FILO left channel
I/O
4
ACOUTL / AC2OUTL
AC coupling left output / HPF filter AC2OUT left channel
O
5
SE3L / ACINL
Single-ended input 3 left channel / AC coupling left input
I
6
SE3R / ACINR
7
SE2L
8
9
10
Function
I/O
Single-ended input 3 right channel / AC coupling right input
I
Single-ended input 2 left channel
I
SE2R
Single-ended input 2 right channel
I
SE1L
Single-ended input 1 left channel
I
SE1R
Single-ended input 1 Right channel
I
11
DIFFL
Pseudo differential stereo input left
I
12
DIFFG
Pseudo differential stereo input common
I
13
DIFFR
Pseudo differential stereo input right
I
14
CREF
Reference capacitor
O
15
GND
Ground
S
16
OUTSW / OUTLR2
17
OUTRF
18
19
Subwoofer output /
2nd
O
rear left output
Front right output
O
OUTRR
Rear right output
O
OUTLR
Rear left output
O
20
OUTLF
Front left output
O
21
MUTE
External mute pin
I
22
SCL
I2C bus clock
I
I/O
23
SDA
I2C bus data
24
VDD
Supply
25
SAIN
26
SAOUT
27
VREF
28
S
Spectrum analyzer clock input
I
Spectrum analyzer output
O
Vref output
O
MIX / OUTSW / OUTRR2 Mix input / Additional subwoofer output /
LGE Internal Use Only
2-18
2nd
rear right output
I/O
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
6. IC602 (NJM2706-DMP24)
6-1. PIN CONFIGURATION
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
12
13
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
LPF
MIN
MOUT
Ca
Cr
BASSFIL1
BASSFIL2
BASSVRIN
BASSVROUT
ealaVRIN
ealaVROUT
GND
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
V+
VREFOUT
VREFIN
SW1
SW2
ealaFIL
HFFILL
HFFILR
ROUT
LOUT
RIN
LIN
6-2. BLOCK DIAGRAM
24
22
20
21
19
18
17
16
15
14
13
50K
23
L
HP
SW
50K
H
50K
Vref
H
3D FILTER
LPF
SW
H:eala
L:BYPASS
L
H
VC
SW
H:eala_Bass
L:BYPASS
SW
L
HP
H
50K
1
SW
SW
L
2
3
4
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5
7
6
2-19
8
9
10
11
12
LGE Internal Use Only
7. IC801 (TB2904HQ)
20
VCC1
6
VCC2
OUT1 (+)
C1
11
PW-GND1 8
OUT2 (+)
12
15
RL
3
14
17
IN3
PW-GND3 18
OUT4 (+)
RL
19
21
IN4
PW-GND4 24
OUT4 ( - )
RL
23
13
STBY
10
4
OFF-SET
MUTE
DET
25
22
C4
RIP
C2
PRE-GND
5
16 AC-GND
OUT3 ( - )
C1
7
PW-GND2 2
OUT3 (+)
C1
RL
IN2
OUT2 ( - )
C6
9
IN1
OUT1 ( - )
C1
C3
1
TAB
C5
7-1. BLOCK DIAGRAM
5V
PLAY
R1
MUTE
: PRE-GND
: PW-GND
LGE Internal Use Only
2-20
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
8. IC901 (LD3811)
COM5
COM6
COM7
COM8
SEG60/COM9
SEG59/COM10
SEG58
SEG57
SEG56
SEG55
SEG54
SEG53
SEG52
SEG51
SEG50
SEG49
SEG48
SEG47
SEG46
SEG45
SEG44
SEG43
SEG42
SEG41
8-1. PIN CONFIGURATION
COM4
COM3
COM2
COM1
VDD
VLCD
VLCD1
VLCD2
VLCD3
VSS
OSCO
OSC1
RES
CE
CL
DI
SEG40
SEG39
SEG38
SEG37
SEG36
SEG35
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG0
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
LD3811
SEG1
SEG58
SEG59/COM10
SEG60/COM9
COM8
COM1
8-2. BLOCK DIAGRAM
SEGMENT DRIVER
COMMON
DRIVER
LATCH
VDD
INSTRUCTION
DECODER
VLCD
ADRAM
6.0
bits
CGRAM
5X9X16
bits
CGRAM
5X9X240
bits
VLCD1
VLCD2
INSTRUCTION
REGISTER
VLCD3
VSS
DCRAM
48X240
bits
ADDRESS
COUNTER
ADDRESS
REGISTER
TIMING
GENERATOR
SHIFT REGISTER
RES
CLOCK
GENERATOR
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
CCB INTERFACE
2-21
LGE Internal Use Only
8-3. PIN FUNCTIONS
Pin
Pin No.
LC75811E LD75811W
Function
Active
I/O
-
O
OPEN
Handling when unused
SEG1 to SEG58 1 to 58
79, 80
1 to 56
SEG59/COM10
SEG60/COM9
59
60
57
58
Segment driver outputs.
The SEG59/COM10 and SEG60/COM9 pins can be used
as common driver outputs under the "set display
Technique"instruction.
COM1 to COM8
68 to 61
66 to 59
Common driver outputs.
-
O
OPEN
Oscillator connections. An oscillator circuit is formed by
connecting an external resistor and capacitor at these pins.
-
I
GND
-
O
OPEN
H
I
OSCI
76
74
OSCO
75
73
CE
78
76
CL
79
77
DI
80
78
Serial data transfer inputs. These pins are connected to the
microcontroller.
CE: Chip enable
CL: Synchronization clock
DI: Transfer data
I
Reset signal input.
• When RES is low (VSS):
• Display off
SEG1 to SEG58 = "L" (Vss)
SEG59/COM10 and SEG60/COM9 = ìLî (Vss)
COM1 to COM8 = "L" (VSS).
• Serial data transfer is disabled.
• The OSCI/OSCO pin oscillator is stopped.
• When RES is high (VDD):
• Display on after a ìdisplay on/off controlî (display on
state setting) instruction is executed.
• Serial data transfers are enabled.
• The OSCI/OSCO pin oscillator operates.
-
I
L
I
GND
GND
RES
77
75
VLCD1
71
69
Used for applying the LCD drive 3/4 bias voltage externally.
-
I
OPEN
VLCD2
72
70
Used for applying the LCD drive 2/4 bias voltage externally.
-
I
OPEN
VLCD3
73
71
Used for applying the LCD drive 1/4 bias voltage externally.
-
I
OPEN
-
-
-
VDD
69
69
Logic block power supply connection. Provide a voltage of
between 2.7 and 6.0 V.
VLCD
70
68
LCD driver block power supply connection. Provide a
voltage of between 4.5 and 10.0 V.
-
-
-
VSS
74
72
Power supply connection. Connect to ground.
-
-
-
LGE Internal Use Only
2-22
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
BLOCK DIAGRAM
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-23
2-24
LGE Internal Use Only
CIRCUIT DIAGRAMS
1. MAIN CIRCUIT DIAGRAM
LGE Internal Use Only
2-25
2-26
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. CDP 1 CIRCUIT DIAGRAM
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-27
2-28
LGE Internal Use Only
3. CDP 2 CIRCUIT DIAGRAM
LGE Internal Use Only
2-29
2-30
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. FRONT CIRCUIT DIAGRAM
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-31
2-32
LGE Internal Use Only
5. USB CIRCUIT DIAGRAM
LGE Internal Use Only
6. LCD LIGHTING CIRCUIT DIAGRAM
2-33
2-34
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
PRINTED CIRCUIT BOARD DIAGRAMS
1. MAIN P.C.BOARD
(TOP VIEW)
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-35
2-36
LGE Internal Use Only
MAIN P.C.BOARD
(BOTTOM VIEW)
LGE Internal Use Only
2-37
2-38
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. CDP P.C.BOARD
3. FRONT P.C.BOARD
(TOP VIEW)
(BOTTOM VIEW)
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2-39
2-40
LGE Internal Use Only
4. USB P.C.BOARD
(TOP VIEW)
(BOTTOM VIEW)
5. LCD LIGHTING P.C.BOARD
LGE Internal Use Only
2-41
2-42
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
SECTION 3 EXPLODED VIEWS
1. CABINET AND MAIN FRAME SECTION
*Accessory
298
451
263
A45
269
Loc.No. 818
835
Loc.No. 850
Loc.No. 900
450
262
A43
Loc.No. 808
458
260
A50
Loc.No. 801
453
458
264
Loc.No.
295
267
278
266
296
FRONT
275
LCD901
274
286
A44
A49
268
458
A26
273
458
279
CABLE1
281
276
272
271
277
265
270
451
454
282
CDP
290
A46
280
297
451
258
451
A41
283
MAIN
254
252
457
A42
257
459
451
457
255
291
251
456
256
451
259
457
453
288
457
250
284
285
452
289
457
459
253
299
287
293
294
292
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3-1
3-2
LGE Internal Use Only
2. MECHANISM(PICK-UP) SECTION
4
1
A03
5
1
3
2
2
LGE Internal Use Only
3-3
3-4
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes