Download WAX3 Direct-View LCD Television Chassis Training Manual

Training Manual
KDL46S3000
WAX3 Direct-View LCD Television Chassis
Circuit Description and Troubleshooting Guide
MODELS:
KDL-26S3000
KDL-32S3000
KDL-40S3000
KDL-46S3000
KDL-32XBR4
KDL-32SL130
KDL-40SL130
Course : CTV-41
Table of Contents
Chapter 1 – Features and Circuit Descriptions ................. 2
BU1 Board Protection ........................................................ 19
Introduction ...................................................................... 2
Features .......................................................................... 2
Onboard Regulator Protect ................................................... 19
New Customer Menu .............................................................. 2
Internet Video Linking ............................................................. 2
HDMI 1.3 Support ................................................................... 2
Bravia™ Theater Sync ............................................................ 3
1080p Input ............................................................................. 3
Circuit Description ........................................................... 4
Overall Block Diagrams ................................................... 4
26 and 32-inch S-Line Models ............................................. 4
Panel Protect ........................................................................ 19
Audio Protect ........................................................................ 19
Communications Errors ..................................................... 20
Trident Video Process Failure ............................................... 20
BH Board Communication Error ........................................... 20
BU1 to Panel (S series models) or BU1 to BH (XBR4 and
D3000 series) Communication Error .............................. 20
Protect Table ...................................................................... 22
BU1 Board .............................................................................. 4
Chapter 2 – Service and Troubleshooting ....................... 23
Overview........................................................................ 23
Circuit Board Locations ................................................. 23
40 and 46-inch S Line Models ............................................. 6
Protection........................................................................... 30
Backlight Power ...................................................................... 6
Diagnostics History ............................................................ 31
Backlight Inverter .................................................................... 4
Power Supply .......................................................................... 4
Power Supply .......................................................................... 6
32” XBR and 40D3000 Models ............................................ 6
Video Processing ........................................................... 10
New Trident Processor .......................................................... 10
Video Switching..................................................................... 10
Digital Tuner .......................................................................... 10
HDMI Inputs .......................................................................... 10
Audio Processing........................................................... 13
Analog Audio ......................................................................... 13
Digital Audio .......................................................................... 13
Power Supply and Protection ............................................ 15
CTV-41
Thermal Protect .................................................................... 19
Clearing the Diagnostics History ........................................... 31
Digital Signal Status........................................................... 32
New Remote Control Commands ...................................... 32
Service Mode................................................................. 34
Data Handling .................................................................... 34
Saving (Writing) Data ............................................................ 34
Reading Back of Data ........................................................... 34
Factory Reset ........................................................................ 34
White Balance Adjustments ............................................... 34
QM Service Page............................................................... 36
Troubleshooting ............................................................. 38
i
Table of Contents (Continued)
Triage Worksheets ............................................................. 38
Troubleshooting Flowcharts ............................................... 38
Initial Contact Flowchart A..................................................... 45
No Power Flowchart B .......................................................... 46
Protect ModeFlowchart C ..................................................... 47
26/32" Inverter Error Flowchart D ......................................... 48
40/46" Inverter Error Flowchart E.......................................... 49
No Video Flowchart F............................................................ 50
Video Distortion Flowchart G ................................................ 51
Audio Flowchart H ................................................................. 52
Service Test Points ........................................................ 53
Chapter 3 - Disassembly ................................................... 58
Overview........................................................................ 58
Inverter Board Removal (26 and 32” Models) ............... 58
26” LCD Panel Removal ................................................ 61
46” Panel Removal ........................................................ 67
CTV-41
ii
Chapter 1 – Features and Circuit Descriptions
Introduction
New Customer Menu
The WAX3 chassis is one of several LCD Flat Panel designs introduced for
the Bravia™ 2007 model year. It provides for introductory and intermediate
level televisions for the customer to choose from. The following models
utilize the WAX3 chassis:
The customer Graphics User Interface (GUI) has been improved to make
navigation of the setup features easier. Icons (similar to those found on
the PSP2) are used extensively. It is known as XMedia Bar™ (pronounced
cross media bar) or XMB for short.
KDL26S3000
Internet Video Linking
KDL32S3000
KDL32SL130
KDL32XBR4
KDL40S3000
KDL40SL130
KDL40D3000
KDL46S3000
Features
Yet another first for Sony, the Bravia™ model lineup will include a Digital
Media Exchange (DMEX) interface. By attaching an optional interface
device, known as Bravia Internet Video Link™, customers will have the
ability to access internet video entertainment via a broad-band connection.
Local news, weather and traffic along with access to selected digital media
streaming can be viewed on the television independent of a computer.
A special DMEX USB port on the rear of the television will allow bidirectional communication with the Bravia Internet Video Link™ device
via the Xross Media Bar™ feature included in the television. Sony will
partner with selected channels on the internet and these will automatically
appear on the screen for the customer to select.
LCD Panels
All LCD panel sizes will be 1280 X 768 (WXGA) resolution. 32” and up
utilizes the Wide Color Gamut Cold-Cathode Fluorescent (WCG-CCFL)
backlighting for increased color uniformity and accurate grey-scales. The
26” model uses conventional fluorescent lights.
The 26 and 32-inch models (with the exception of the 32XBR4) utilize 8-bit
LCD panels. The 40 and 46-inch panels receive 10-bit RGB information.
All panel sizes (except the 32” XBR) are 60FPS refresh rate.
Exclusive to the KDL32XBR4 and KDL40D3000 is Sony’s introduction
of Motionflow™. An additional circuit is included to double the 60HZ
frame resolution from the video process circuits to 120HZ for clear picture
reproduction during rapid moving scenes. In this manual this feature will
be referred to as High Frame Rate (HFR).
CTV-41
2
Chapter 1 - Features and Circuit Descriptions
HDMI 1.3 Support
HDMI version 1.3 has added several features to enhance picture and
audio quality along with bi-directional communication between HDMI
equipped devices. The added features that apply to display products are
as follows:
Speed: Single link bandwidth is increased from 4.9GBS to 10.2GBS
Deep Color™: Increases RGB and component sample level from 24-bit
to 30, 36, and 48 bit.
xvYCC: Removes previous color space limitations to allow for the
reproduction of every color perceivable by the human eye.
CEC: Short for Consumer Electronics Control. Allows communication
among HDMI devices for control. Uses the industry standard A/V link
protocol. For example: Equipment can be set up so that when a DVD disc
is inserted into a player, the television will turn on with the proper input
setting along with the audio equipment turning on and being set for the
proper input and audio format.
The WAX3 model lineup only supports the CEC feature of HDMI 1.3.
Bravia™ Theater Sync
A feature incorporated within the television to utilize the CEC feature of
HDMI 1.3
1080p Input
Unit can receive 1080p source content via the HDMI inputs only. The
1080p signal is scaled to the WXGA panel resolution.
NOTE: Only the 32” XBR and D3000 model will support 24-frame
sources. The S series models support 30-frame only.
CTV-41
3
Chapter 1 - Features and Circuit Descriptions
Circuit Description
Various differences in circuitry occur in the WAX3 chassis line based on
panel size and display features. Virtually all video processing is the same
among the different designs and centers around the BU1 board. From this
point it becomes a matter of what LCD panel size is used, HDMI versus
analog front video inputs and the design of the power supply dedicated to
that model.
The circuit descriptions to follow will differentiate between the models
based primarily on LCD panel size since this will determine what type of
power supply and backlight inverter boards will be used. The KDL32XBR4
and KDL40D3000 are the only models in this chassis line that has an
upgrade in video features including a third HDMI input and High Frame
Rate circuits and panel. This will be described in a separate block
diagram.
Overall Block Diagrams
26 and 32-inch S-Line Models
In Figure 1-1 the overall block diagram of the circuit layout utilized in the
KDL26A3000 and KDL32S3000 is shown. A brief description for each of
the major circuit boards will be given.
Backlight Inverter
These smaller panels use a single inverter/balancer assembly that is part
of the LCD panel in order to provide ballast control for the fluorescent
backlights. 24VDC is provided by the power supply (G1D for the 26” or
G1H for the 32”). This 24 volt source powers the individual inverters to
generate the high voltage (4.5KV to 5KV) necessary to light the fluorescent
backlight lamps. Additional lines for on/off control and inverter failure
feedback are on the same DC voltage connector from the power supply
and are routed to the BU1 board for control and monitoring by the Main
Micro.
The inverter board also contains circuits to monitor the current draw of
CTV-41
each individual backlight lamp. If a lamp were to fail or weaken with age,
or if one or more of the inverters were to fail, an error command will be
detected by the Main Micro on the BU1 board and shut the unit down and
blink the front power LED in groups of 6.
Power Supply
2 power supplies reside on the G board. The 23” model power supplies
are designated G1D whereas the 32” is G1H. Both supplies are relatively
the same aside from current capacity and layout of their protect circuits. A
standby supply runs constantly whenever AC power is applied to provide
12VDC for the main relay and power for the main switching supply.
Standby 3.3 volts is also generated to power the Main Micro on the BU1
board and other circuits that are required to run constantly such as the
remote IR receiver. The main switching regulator provides the majority of
the voltages used within the unit. Further details of the power supplies will
be discussed later in this chapter.
BU1 Board
This board has been redesigned to take on virtually all of the circuits that
were found on 3 boards in last year’s chassis designs. The tuner and ATI
Micro were on separate boards in previous designs but have now been
integrated on the same board with the video process circuits.
Other than the front video inputs applied to the U1 board, all analog and
HDMI input connectors are part of the BU1 board. The Main TV Micro
resides on this board and is responsible for virtually all of the operational
functions of the unit.
Audio switching, digital signal processing and amplification are also
located here. The audio exits the BU1 board to drive the speakers, optical
output, L/R analog out and headphones. Another important feature of the
audio circuits is that all audio sources selected will be output from the
optical transmitter. This was not true in previous Sony designs in which
the optical out only functioned when a digital tuner signal was received.
4
Chapter 1 - Features and Circuit Descriptions
VIDEO PROCESS
A/V SWITCHING
MAIN TV MICRO
AUDIO PROCESS/AMP
HDMI MICRO
TUNER
ATI MICRO
OPTICAL OUT
L/R AUDIO OUT
HEADPHONES OUT
VIDEO 1
COMPOSITE_Y/C IN
VIDEO 3
COMPOSITE IN
VIDEO 2
COMPOSITE IN
ATSC/NTSC
TUNER
FRONT
INPUTS
COMPONENT 2 IN
IC7300
ATI
LCD PANEL
(WXGA)
U1
INVERTER
COMPONENT 1 IN
IC4500
TRIDENT
VIDEO PROCESSOR
COMPONENT 3 IN
HDMI 1 IN
IC3001
MAIN TV
MICRO
HDMI 2 IN
PC IN
USB FOR DMEX
AND SOFTWARE
UPGRADE
IC2002
AUDIO SW
AUDIO DSP
L
IC2009
AUDIO AMP
R
BU1
AC IN
POWER SUPPLY
G1D
26"
G1H
32"
FIGURE 1-1
26/32" WAX3 CHASSIS OVERALL BLOCK
FIGURE 1-1
26/32” S SERIES OVERALL BLOCK DIAGRAM
CTV-41
5
Chapter 1 - Features and Circuit Descriptions
40 and 46-inch S Line Models
32” XBR and 40D3000 Models
In Figure 1-2 it is seen that most of the circuits found in the 26/32” models
is the same. Therefore, only the differences will be explained here.
All of the circuitry in these models are the same as their respective S
series models except for the addition of the BH and U2 boards as
illustrated in Figures 1-3 and 1-4. The circuitry on the BH board captures
the 60HZ frame rate video exiting BU1 board, analyzes the difference
between adjacent fields and generates additional fields in between to
double the frame rate to 120HZ. The end result is a dramatic reduction of
the smearing or “comet tailing” that is inherent to LCD displays during fast
moving video content.
Backlight Power
Separate circuits are used to supply high voltage to the backlight lamps.
These circuits only generate the high voltage needed. Balancer circuit
boards are mounted on the panel to distribute the high voltage and monitor
the current level to each lamp.
The 40” model uses a single D1 board to generate high voltage of
approxiamtely 4.5 to 5KV. The 46” however, requires the use of 2 high
voltage boards due to the longer fluorescent tubes. In this case a D1 and
D2 board is used to supply voltage to both ends of the fluorescent lamps.
This is important to remember when troubleshooting a lamp protection
shutdown problem. If one board fails you will notice that one side of the
screen is lighter that the other before the unit shuts down. The side that is
darker indicates which board is at fault.
The front video input U2 board provides an additional HDMI input not
found on the S series models. One analog component input was removed
to accommodate the additional HDMI so only HDMI and composite video
are accepted at these inputs.
IMPORTANT: Even though the 40 and 46” models both use a D1 board,
they are not interchangeable. The D1 board part numbers are different for
the 40 and 46”.
Power Supply
A G3 board is used and uses a Power Factor Control circuit to generate
the 390VDC required by the D1 and D2 circuits. The on-board protect
circuits are slightly more sophisticated than the G1D and G1H boards but
the end result is to stop the power supply if certain over voltage and current
conditions arise. These items will be discussed later in this chapter.
CTV-41
6
Chapter 1 - Features and Circuit Descriptions
VIDEO PROCESS
A/V SWITCHING
MAIN TV MICRO
AUDIO PROCESS/AMP
HDMI MICRO
TUNER
ATI MICRO
OPTICAL OUT
L/R AUDIO OUT
ATSC/NTSC
TUNER
HEADPHONES OUT
VIDEO 1
COMPOSITE_Y/C IN
VIDEO 3
COMPOSITE IN
VIDEO 2
COMPOSITE IN
BACKLIGHT POWER
46" ONLY
IC7300
ATI
D2
FRONT
INPUTS
COMPONENT 2 IN
U1
IC4500
TRIDENT
VIDEO PROCESSOR
WXGA 60FPS
LCD PANEL
(WXGA)
COMPONENT 1 IN
COMPONENT 3 IN
HDMI 1 IN
IC3001
MAIN TV
MICRO
BACKLIGHT POWER
40/46"
D1
HDMI 2 IN
PC IN
USB FOR DMEX
AND SOFTWARE
UPGRADE
IC2002
AUDIO SW
AUDIO DSP
L
IC2009
AUDIO AMP
R
BU1
POWER SUPPLY
G3
AC IN
FIGURE 1-2
FIGURE
1-2 OVERALL BLOCK
40/46"" WAX3 S MODEL
CHASSIS
40/46” S SERIES OVERALL BLOCK DIAGRAM
CTV-41
7
Chapter 1 - Features and Circuit Descriptions
VIDEO PROCESS
A/V SWITCHING
MAIN TV MICRO
AUDIO PROCESS/AMP
HDMI MICRO
TUNER
ATI MICRO
VIDEO 1
COMPOSITE_Y/C IN
HDMI 2 IN
L/R AUDIO OUT
HEADPHONES OUT
ATSC/NTSC
TUNER
VIDEO 3
COMPOSITE IN
VIDEO 2
COMPOSITE IN
OPTICAL OUT
FRONT
INPUTS
IC7300
ATI
HFR
(High Frame
Rate)
U2
LCD PANEL
(WXGA)
INVERTER
BH
COMPONENT 1 IN
COMPONENT 2 IN
IC4500
TRIDENT
VIDEO PROCESSOR
HDMI 1 IN
HDMI 3 IN
IC3001
MAIN TV
MICRO
PC IN
USB FOR DMEX
AND SOFTWARE
UPGRADE
IC2002
AUDIO SW
AUDIO DSP
L
IC2009
AUDIO AMP
R
BU1
POWER SUPPLY
G1H
AC IN
FIGURE 1-3
FIGURE 1-3
32XBR4 WAX3 CHASSIS OVERALL BLOCK
32XBR4 OVERALL BLOCK DIAGRAM
CTV-41
8
Chapter 1 - Features and Circuit Descriptions
VIDEO PROCESS
A/V SWITCHING
MAIN TV MICRO
AUDIO PROCESS/AMP
HDMI MICRO
TUNER
ATI MICRO
OPTICAL OUT
L/R AUDIO OUT
ATSC/NTSC
TUNER
HEADPHONES OUT
VIDEO 1
COMPOSITE_Y/C IN
VIDEO 3
COMPOSITE IN
IC7300
ATI
FRONT
INPUTS
U2
HFR
IC4500
TRIDENT
VIDEO PROCESSOR
BH
LCD PANEL
(WXGA)
COMPONENT 1 IN
COMPONENT 3 IN
HDMI 1 IN
IC3001
MAIN TV
MICRO
BACKLIGHT POWER
D1
HDMI 3 IN
PC IN
USB FOR DMEX
AND SOFTWARE
UPGRADE
IC2002
AUDIO SW
AUDIO DSP
L
IC2009
AUDIO AMP
R
BU1
POWER SUPPLY
G3
AC IN
FIGURE 1-4
FIGUREOVERALL
1-4
WAX3 40D3000 CHASSIS
BLOCK
40D3000 OVERALL BLOCK DIAGRAM
CTV-41
9
Chapter 1 - Features and Circuit Descriptions
Video Processing
An overall block diagram of the video process circuits is illustrated in Figure
1-5 for the S series models and in Figure 1-6 for the 32”XBR 40” D3000
models. Processing of the video is the same except for the additional
HDMI input available via the U2 board and frame doubling on the BH
board.
Display Information Data (EDID) to provide display capability information
to the device connected to the input. In the XBR model an additional EDID
IC250 (not shown) is located on the U2 board.
New Trident Processor
IC4500 has been designed to handle many of the tasks once done by
separate components. It has eliminated a separate CCP processor, HDMI
Micro, DRC and Wega Engine. It is capable of handling video resolutions
from 480i all the way up to 1080p (via the HDMI inputs only). All signals
exit Trident as 720p 60FPS.
Video Switching
Only composite and Y/C signals are switched by IC4800. Component,
HDMI, and PC inputs are routed directly to Trident IC4500 where they are
selected internally. Only video input 1 accepts a Y/C signal source.
Digital Tuner
If a digital tuner source is selected, the signal is sent directly to the ATI
Micro IC7300 where the signal will be demodulated and decoded to
extract the audio and video information. The video digital stream is then
sent to Trident video processor IC4500 and audio data is input to Audio
DSP IC2002 (not shown).
HDMI Inputs
Note the lack of an HDMI Microprocessor. This is now integrated within
the Trident processor IC4500. HDMI sources pass through HDMI EQ
IC550 for impedance matching and into IC4500 for processing of the
audio and video information. IC5501 and IC5502 contain the Enhanced
CTV-41
10
Chapter 1 - Features and Circuit Descriptions
DMEX USB
ATSC/NTSC
TUNER
IC7300
ATI MICRO
Y/C_COMPOSITE 1
COMPOSITE 3
IC4800
VIDEO
SWITCH
COMPOSITE 2
IC4500
TRIDENT VIDEO
PROCESSOR
U1
COMPONENT 2
WXGA 60FPS
TO LCD PANEL
COMPONENT 1
COMPONENT 3
PC
IC5501
EDID
HDMI 1
IC5500
HDMI EQ
HDMI 2
IC5503
EDID
BU1
FIGURE 1-5
S
MODEL
FIGURE VIDEO
1-5 PROCESS
S SERIES VIDEO PROCESS BLOCK DIAGRAM
CTV-41
11
Chapter 1 - Features and Circuit Descriptions
DMEX USB
ATSC/NTSC
TUNER
IC7300
ATI MICRO
Y/C_COMPOSITE 1
COMPOSITE 3
IC4800
VIDEO
SWITCH
IC250
EDID
IC4500
WXGA 60FPS
TRIDENT VIDEO
PROCESSOR
U1
HFR
WXGA
120FPS
TO LCD
PANEL
BH
COMPONENT 1
COMPONENT 3
PC
IC5501
EDID
HDMI 1
IC5500
HDMI EQ
HDMI 3
IC5503
EDID
BU1
FIGURE 1-6
XBR AND D SERIES VIDEO PROCESS BLOCK DIAGRAM
CTV-41
12
Chapter 1 - Features and Circuit Descriptions
Audio Processing
Figure 1-7 illustrates the overall block diagram for the audio processing.
All of this is accomplished on the BU1 board.
Analog Audio
If an ATSC compliant digital channel is received by cable TV (QAM) or
terrestrial (8VSB) and a Digital Dolby® audio signal is embedded in the
content, the optical out will pass this signal for use with a surround-sound
amplifier that is compatible with Digital Dolby® 5.1 standards. Table 3-1
offers an overall view of what is output from the optical jack based on input
selection.
All analog audio sources are switched by the Audio DSP IC2002. The L/R
audio signals are A/D converted within IC2002 for processing by DSP
and exit as analog L/R to IC2009. The analog L/R audio is converted
to PWM by IC2009 and amplified by the class-D amplifier within the IC.
All selected analog sources are output in SPDIF format for the optical
out transmitter. Analog L/R outputs are also provided for the audio output
jacks on the rear of the unit and the headphone jack on the front input U1
board. On the 32” XBR series the front input board is the U2 board.
Digital Audio
Digital audio sources are available via the HDMI inputs or digital channels
received by the tuner. HDMI audio is extracted by Trident IC4500 and sent
to the ATI Micro. Digital audio from the tuner is sent directly to ATI. The
audio information is then sent to Audio DSP IC2002 in digital format. At
this point audio process is the same as analog signals.
AUDIO SOURCE
Optical Out
DVD HDMI 5.1
2CH PCM
The optical output jack at the rear of the unit will pass all selected audio
sources except for Super Audio CD (SACD) or DVD audio sources
hooked up to the HDMI inputs (for obvious copyright protection reasons).
All analog sources (including that from the NTSC tuner) are output as
2-channel 48KHZ PCM. DVD players hooked up to the HDMI inputs will
output 2-channel PCM regardless of what the HDMI audio output on
the DVD player is set to. The internal speakers will output DVD audio
regardless of what the HDMI audio of the DVD player is set to (unlike
previous year’s models).
ALL ANALOG AUDIO INPUTS
2CH PCM
NTSC TUNER
2CH PCM
CTV-41
DIGITAL TUNER 5.1
OPTICAL OUTPUT
5.1 OR 2CH PCM
SACD VIA HDMI
NO OUTPUT
DVD AUDIO VIA HDMI
NO OUTPUT
TABLE 3-1
OPTICAL OUTPUT TRUTH TABLE
13
Chapter 1 - Features and Circuit Descriptions
HDMI 1
HDMI 2
IC4500
TRIDENT
ATSC/NTSC
TUNER
IC7300
ATI MICRO
Y/C_COMPOSITE 1
COMPOSITE 3
COMPOSITE 2
COMPONENT 2
U1
COMPONENT 1
IC2002
AUDIO SW
DSP
L
IC2009
CLASS D
AUDIO AMP
R
OPTICAL OUT
COMPONENT 3
L/R AUDIO OUT
HEADPHONES OUT
PC
BU1
HDMI 1 ANALOG
FIGURE 1-7
AUDIO PROCESS BLOCK DIAGRAM
CTV-41
14
Chapter 1 - Features and Circuit Descriptions
Protection
would be no diagnostics indication from the power LED.
Several circuits on the WAX3 chassis are utilized to monitor voltage and
current conditions. Should a problem develop in any of these monitored
circuits the unit will shut down in most cases and blink the power LED red
in varying sets of sequences in order indicate what is likely causing the
failure. Protect circuits are located on the power supply, BU1 board and
the back light inverters.
Power Supply and Protection
3 different power supplies are used in the WAX3 chassis and these are
shown in Figures 1-8, 1-9, and 1-10. The 26” units use a G1D board, the
32” a G1H board and the 40/46” models use the G3 board. The G1D and
G1H boards are very similar in design with current capacity being their
primary difference and the presence of a PFC circuit on the G1H while
one is not used on the G1D. They both generate 24VDC to supply the
inverter circuits on the panel.
The G3 board uses the PFC circuit to directly drive the D1 and D2 inverter
boards for the 40 and 46” panels. All 3 power supplies contain overvoltage, under-voltage and over-current monitoring. The D3 power supply
contains additiona circuits to monitor the temperature of the PFC switching
transistors and the in-rush current limit resistor R6009 as shown in figure
1-10. If either of these circuits is activated the power supply will be turned
off. The Main Micro located on the BU1 board monitors the regulated 12
volt line generated by all 3 boards. If this voltage is no longer generated
the Main Micro will flash the power LED in sequences of 2 assuming the
standby power supply is still operating.
In figure 1-9, note the PFC detection line consisting of PH6301 and Q6403
which is unique to the 40/46” models. If the PFC circuit were to cease
operating the DC voltage, which is normally around 390 volts, would drop
to less than half (rectified AC only). This would put a strain on the D1 and
D2 boards since they would attempt to keep the lamps lit but would require
extra current due to the drastic voltage drop. In this event Q6403 will pull
the control signal (which is normally high) low, turning off the inverter(s).
The symptom would be a unit that has no backlights operating but there
CTV-41
15
Chapter 1 - Features and Circuit Descriptions
AC
IN
NTC1
340VDC
T
AC
IN
BD1
STANDBY
POWER
SUPPLY
STBY
12V
STBY
3.3V
F1
4A
AU
13V
PRIMARY
POWER
SUPPLY
RY6101
CN2
12V
6V
3
REG 12V
9
24V
TO
INVERTER
24V
STBY
12V
STBY
3.3V
12V
OVP
Q304
SCR
LATCH
24V
OVP
Q902
IC305
Q901
Q302
TO CN4002
BU1
BOARD
Q303
4
6V
7
AU GND
8
AU 13V
11
POWER_ON
13
STBY 3.3V
TO CN4001
BU1
BOARD
CN3
PFC
G1D
FIGURE 1-8
G1D BOARD PROTECTION (26” MODELS)
CTV-41
16
Chapter 1 - Features and Circuit Descriptions
F6102
4A
AC
IN
PFC
AC
IN
343VDC
D6101
STBY
12V
STANDBY
POWER
SUPPLY
STBY
3.3V
AU
13V
PRIMARY
POWER
SUPPLY
CN6202
12V
6V
3
REG 12V
9
24V
TO
INVERTER
24V
Q6202
Q6203
LATCH
R6101
STBY
12V
12V
OVP
24V
OVP
STBY
3.3V
Q6108
PH6103
Q6201
Q6107
RY6101
PH6300
Q6105
Q6106
LATCH
IC6103
PFC
OVP
4
6V
7
AU GND
8
AU 13V
11
POWER_ON
13
STBY 3.3V
TO CN4001
BU1
BOARD
CN6201
ON = 3.3V
PFC OCP
TO CN4002
BU1
BOARD
PFC
G1H
FIGURE 1-9
G1H BOARD PROTECTION (32” MODELS)
CTV-41
17
Chapter 1 - Features and Circuit Descriptions
CN6501
F6000
6.3A
AC
IN
PFC
AC
IN
390VDC
D6000
STANDBY
POWER
SUPPLY
PRIMARY
POWER
SUPPLY
1
PFC OUT
3
PRI GND
TO D1
BOARD
CN6502
STBY
12V
STBY
3.3V
1
PFC OUT
3
PRI GND
TO D2
BOARD
CN6004
AU
13V
6
REG 12V
3
BACK_LIGHT
4
INV_ERR
7
BALANCE_ERR
7
BALANCE_ERR
9
INV_ERR
PH6301
10
BACKLIGHT_ON
STBY
3.3V
3
6V
5
AU GND
12V
6V
TO D1
BOARD
CN6203
Q6403
PFC DET
R6009
STBY
12V
CN6202
Q6304
PH6300
Q6407
Q6303
RY6000
FROM BU1
BOARD
7
AU 13V
10
POWER_ON
12
STBY 3.3V
TO BU1
BOARD
12V OVP
PFC OCP
PFC OTP
R6009 OTP
Q6300
Q6301
LATCH
1C6300
PFC
OVP
PFC
G3
FIGURE 1-10
G3 BOARD PROTECTION (40” AND 46” MODELS)
CTV-41
18
Chapter 1 - Features and Circuit Descriptions
BU1 Board Protection
The BU1 board has several protect monitoring circuits for its own DC
voltage regulators. Monitoring of temperature, speaker protection and an
inverter failure are also included. A block diagram of these protect circuits
is illustrated in Figure 1-11
Onboard Regulator Protect
The regulated 2.5 volts for Trident IC4500 is monitored. If this voltage fails
A DC_ALERT 1 high will occur on pin 163 of the Main Micro IC3001. The
unit will shut down and the power LED will flash in groups of 3.
Similarly, if the D1.0V or D1.8V sources (generated on the BU1 board)
fails a high will be placed on pin 153 and the unit will shut down generating
groups of 4 blinks.
The regulated 12V is the only outside voltage monitored. It sources from
the power supply and will keep a specified high on pin 82 of the Main
Micro. If the voltage fails or falls below this specified limit, the unit will shut
down and blink the power LED in groups of 2. Note that this 12V line is
also the source for the Panel 12V which is switched by the main micro.
This voltage is also monitored by Main Micro at pin 154 (DC_ALERT_3).
If the 12V from the power supply is OK but failed on the Panel_12V line,
the unit will shut down and blink the power LED in groups of 5.
Thermal Protect
IC3007 is a digital thermometer that can be programmed to send data to the
Main Micro when a specified temperature level is reached. The purpose of
the thermal sensing is to monitor the unit for excessive temperature within
the unit during operation. If the temperature rises above the specified
threshold the unit will shut down and display groups of 6 blinks from the
power LED.
Note: IC3007 is constantly polled by the Main Micro. If the IC were to
fail or the data line on the I²C to open the unit would shut down within
approximately 10 seconds. It is important to beware of this. If a unit shuts
down immediately, it can be safely assumed that the television is not
CTV-41
running hot. Shutdowns after extended periods would warrant checking
the location of the unit for proper ventilation.
Panel Protect
If the high voltage generated by the inverter were to fail, or if abnormal
current conditions are detected on the balancer circuits, a high would be
applied on pin 81 of the Main Micro. The unit will shut down and blink the
power LED in groups of 6.
Audio Protect
If any DC is detected on the left or right speaker channels the unit will shut
down and blink the power LED in groups of 8. This symptom is usually
caused by a failed audio amp and would require the replacement of the
BU1 board.
Balancer Protect
Along with a Panel Protect line, a Balancer Error line is connected to pin
81 of the Main Micro. Working in conjunction with panel protection, both
lines connect to a voltage divider. The voltage at pin 81 is normally 3.3
volts. If an inverter error is detected, the line (normally low) will go high
and the inverter transistor will pull the voltage down to zero. A balancer
error would complete the divider network and pull the voltage down to
about one-half (1.8 volts). This is how IC3001 is able to tell which type of
error has occured.
NOTE: The 26” and 32” models do not have a balancer error line from the
inverter board. Only the 40” and 46” models have this feature.
19
Chapter 1 - Features and Circuit Descriptions
Communications Errors
Another feature of the WAX 3 chassis is the monitoring of communications
between specific devices. Not shown on the previous block diagrams are
the following protect events that could occur.
Main Micro Communication Error
The unit will shut down and the power LED will blink in groups of 10. The
BU1 board must be replaced to rectify this.
Trident Video Process Failure
The unit will shut down and the power LED will blink in groups of 11 The
BU1 board must be replaced to rectify this.
BH Board Communication Error
Unique to the KDL32XBR4 and KDL40D3000 that utilize frame rate
doubling, the communication between the BH board and the LCD panel
TCON is monitored and the unit will shut down if this communication fails.
The power LED will blink in groups of 12.
BU1 to Panel (S series models) or BU1 to BH (XBR4 and
D3000 series) Communication Error
If either of these events occurs, the power LED will blink at one-half second
intervals continuously. The unit will not shut down. The backlights will be
lit but there will be no video display (including OSD graphics). This can be
caused by an unplugged LVDS cable or a failure of BU1 or BH board or a
defective panel (TCON failure).
CTV-41
20
Chapter 1 - Features and Circuit Descriptions
Q4017
Q4016
TRIDENT
DDR 2.5V
CN4001
FROM
CN3
(G1D)
CN6201 (G1H)
CN6202 (G3)
Q4001
STBY 3.3V
1
POWER_ON
3
AU 13V
5
AU GND
7
Q4002
D1.0V
Q4018
DC ALERT 1
(3X)
DC ALERT 2
(4X)
PANEL
12V TO
LCD
PANEL
CN4002
REG 12V
1
Q4019
IC3001
MAIN MICRO
IC3007
TEMP
SENSE
SCL
Q2012
Q2017
DC_DET R
POWER_3
CN4003
FROM INVERTER
(26/32") OR G3
BOARD (40/46")
3.3V
1
BACKLIGHT
3
INV_ERR
5
BALANCER_ERR
TEMP
ERROR (7X)
SDA
82
118
119
DC ALERT 3
(5X)
PANEL 12V DETECT
DIMMER
153
D1.8V
MAIN POWER FAILURE (2x)
FROM
CN2
(G1d)
CN6202 (G1H)
CN6203 (G3)
163
154
SPEAKER PROT
8X
Q2013
Q2018
DC_DET L
26
Q4014
81
INVERTER ERROR (6X)
7
Q4015
BALANCER ERROR (13X)
BU1
FIGURE
1-11
FIGURE
1-11
BU1
BOARD
PROTECT
BU1 BOARD PROTECTION
CTV-41
21
Chapter 1 - Features and Circuit Descriptions
Protect Table
The various protect alarms are shown in Table 1-1
# OF RED LED
BLINKS
EVENT
POSSIBLE CAUSE
NOTES
2
REG 12V FAILURE
POWER SUPPLY BOARD
PAGE 1 OF DIAGNOSTICS
3
2.5V FAILURE TO TRIDENT IC
BU1 BOARD
PAGE 1 OF DIAGNOSTICS
4
D 1.OV FAILURE
BU1 BOARD
PAGE 1 OF DIAGNOSTICS
5
PANEL 12V
BU1 BOARD
BU1 TO PANEL TCON 12V
6
INVERTER ERROR
INVERTER (26/32")
D1, D2 BOARDS (40/46")
LISTED AS "BACK_LIGHT" IN
DIAGNOSTICS PAGE 1
7
TEMPERATURE ERROR
BU1 BOARD (S MODELS)
BH BOARD (D/XBR MODELS)
PAGE 2 OF DIAGNOSTICS
8
SPEAKER PROTECT
BU1 BOARD
PAGE 2 OF DIAGNOSTICS
9
FAN ERROR
NOT USED
NOT USED BUT APPEARS IN
PAGE 2 OF DIAGNOSTICS
10
MAIN MICRO COM ERROR
BU1 BOARD
PAGE 2 OF DIAGNOSTICS
11
TRIDENT IC FAILURE
BU1 BOARD
PAGE 2 OF DIAGNOSTICS
12
BU1 TO BH COM ERROR
BU1 BOARD OR BH BOARD
(32XBR AND 40D3000 ONLY)
PAGE 2 OF DIAGNOSTICS
13
BALANCER ERROR
LCD PANEL
NOT USED IN 26/32" MODELS
PAGE 1 OF DIAGNOSTICS
TABLE 1-1
WAX3 PROTECTION TABLE
CTV-41
22
Chapter 2 – Service and Troubleshooting
Overview
Due to the reduced number of circuit boards and the requirement that
repairs be performed at board level, troubleshooting the WAX3 chassis
consists of observations of symptoms and customer information more
than actual signal tracing and voltage checks. This chapter will assist
in this process by providing illustrations of the circuit board locations,
troubleshooting flowcharts and various tips on determining what failure
may be causing the symptom.
Circuit Board Locations
The location of the major circuit boards is illustrated in Figures 2-1 through
2-4. They are as follows:
Figure 2-1;
KDL26/32S3000 and KDL32S30L1
Figure 2-2:
KDL32XBR4
Figure 2-3:
KDL40S3000 and KDL40S30L1
Figure 2-4:
KDL46S3000
Figure 2-5:
KDL40D3000
Note the left and right support brackets that are visible when the rear
cover is removed. These may be removed at any time during service in
order to remove circuit boards more easily. If both brackets are removed
(necessary if LCD panel is replaced) attention must be paid as to which
side of the units the brackets came from. Each bracket is marked “L” and
“R”. These left and right markings are set when viewing the FRONT of
the television, not the rear. Locater pins are also located at the tops of
the brackets and are not in the same offset location. If the brackets are
installed incorrectly they will not sit flush and cause problems when trying
to install the screws for a wall mount bracket. Proper bracket installation
is shown in Figure 2-6.
CTV-41
23
Chapter 2 - Service and Troubleshooting
TCON
U1
INVERTER
CTV-41
G1D 26"
G1H 32"
BU1
FIGURE 2-1
26” AND 32” S SERIES CIRCUIT BOARD LOCATIONS
26"/32" S SERIES CIRCUIT BOARD LOCATIONS
24
Chapter 2 - Service and Troubleshooting
TCON
BH
INVERTER
U2
BU1
G1H
32XBR CIRCUIT
LOCATION
FIGUREBOARD
2-2
32XBR CIRCUIT BOARD LOCATIONS
CTV-41
25
Chapter 2 - Service and Troubleshooting
TCON
D1
U1
BALANCER
BU1
G3
FIGURE 2-3
40S3000CIRCUIT
CIRCUITBOARD
BOARDLOCATIONS
LOCATION
40S3000
CTV-41
26
Chapter 2 - Service and Troubleshooting
BALANCER
TCON
D1
D2
U1
BALANCER
BU1
G3
FIGURE
2-4LOCATION
46" CIRCUIT
BOARD
46S3000 CIRCUIT BOARD LOCATIONS
CTV-41
27
Chapter 2 - Service and Troubleshooting
TCON
D1
BH
U2
BALANCER
BU1
G3
FIGURE 2-5
46D3000
LOCATIONS
CIRCUIT BOARD
BOARD LOCATION
40D3000 CIRCUIT
CTV-41
28
Chapter 2 - Service and Troubleshooting
NOTE DIFFERENCE IN LOCATION
OF PIN BOSSES
BRACKETS ARE LABELED AS
VIEWED FROM FRONT OF UNIT
FIGURE 2-6
LEFT AND
RIGHT2-6
BRACKETS
FIGURE
LEFT AND RIGHT WALL MOUNT BRACKETS
CTV-41
29
Chapter 2 - Service and Troubleshooting
Protection
The protect circuits are described in detail in Chapter 1 of this manual.
Table 2-1 lists the protect events that could possibly occur and suggested
locations for their causes. Troubleshooting flowcharts are also located later
in this chapter to assist the technician in isolating the cause of a protect
event. Although the self-diagnostics feature is helpful in troubleshooting
a unit, they are not 100% reliable and may be caused by more than 1
component.
NOTE: Whenever the unit shuts down due to a protect event the
remote commander will not function. In previous Sony chassis
designs the remote could be used to cycle the unit back on. The unit
would shut down again, of course, if the problem still existed. In the
WAX3 chassis the power must be cycled by using the manual power
button.
# OF RED LED
BLINKS
EVENT
POSSIBLE CAUSE
NOTES
2
POWER SUPPLY BOARD
PAGE 1 OF DIAGNOSTICS
3
REG 12V FAILURE
2.5V FAILURE TO
TRIDENT IC
BU1 BOARD
PAGE 1 OF DIAGNOSTICS
4
D 1.OV FAILURE
BU1 BOARD
PAGE 1 OF DIAGNOSTICS
5
PANEL 12V
BU1 TO PANEL TCON 12V
6
INVERTER ERROR
BU1 BOARD
INVERTER (26/32")
D1, D2 BOARDS (40/46")
7
TEMPERATURE ERROR
BU1 BOARD (S MODELS)
BH BOARD (D/XBR MODELS) PAGE 2 OF DIAGNOSTICS
8
SPEAKER PROTECT
BU1 BOARD
PAGE 2 OF DIAGNOSTICS
9
NOT USED
NOT USED BUT APPEARS IN
PAGE 2 OF DIAGNOSTICS
10
FAN ERROR
MAIN MICRO COM
ERROR
BU1 BOARD
PAGE 2 OF DIAGNOSTICS
11
TRIDENT IC FAILURE
12
BU1 BOARD
BU1 BOARD OR BH
BU1 TO BH COM ERROR BOARD
13
BALANCER ERROR
LCD PANEL
LISTED AS "BACK_LIGHT" IN
DIAGNOSTICS PAGE 1
PAGE 2 OF DIAGNOSTICS
PAGE 2 OF DIAGNOSTICS
NOT USED IN 26/32" MODELS
PAGE 1 OF DIAGNOSTICS
TABLE 2-2
SELF-DIAGNOSTICS TABLE
CTV-41
30
Chapter 2 - Service and Troubleshooting
Diagnostics History
Certain protect events are monitored by the Main Micro on the BU1 board.
Those that are monitored are stored into NVM for retrieval. Each time a
monitored protect event occurs, a running count is kept and displayed.
This feature is very useful in locating the cause of intermittent failures.
The diagnostics history page is retrieved by turning the unit off and
pressing the following buttons on the remote commander in sequence:
“DISPLAY”, “5”, “VOL-”, and “POWER”. The unit will turn on and you may
have to wait several seconds for the display to appear once the backlights
have turned on. This feature is illustrated in Figure 2-7.
Note also that due to the large number of diagnostic events monitored,
there are 2 pages of lists. Toggling between the pages is performed using
the 1 and 4 keys on the remote.
Clearing the Diagnostics History
Once the diagnostics page has been viewed for a history of protect events
(and there are any present) the failure counts must be cleared to be useful
at a later time. This is accomplished by pressing the “8” followed by the “0”
key on the remote (not “8”, “ENTER” as in past models).
USE “1” AND “4” KEY ON
REMOTE COMMANDER TO
TOGGLE BETWEEN PAGES
FIGURE 2-7
FIGURE
2-7
WAX3 CHASSIS DIAGNOSTIC HISTORY PAGES
DIAGNSTICS HISTORY PAGE
CTV-41
31
Chapter 2 - Service and Troubleshooting
New Remote Control Commands
Digital Signal Status
The button sequnces to perform read, write and initialize commands
has changed. The table below shows the correct buttons to press for the
various tasks.
If the customer is experiencing intermittent picture loss, freezing, or tiling,
the signal level of the cable or OTA signal can be checked in the service
mode or within the customer menu. The customer menu is easier to
access and is specific to those signal levels with pleasing graphics so it is
suggested to use this feature as opposed to the pages located within the
QM service graphics.
OPERATION
COMMAND BUTTONS
"7"
INITIALIZE DATA "MUTE"
"0"
"8"
SERVICE PAGE
DISPLAY
INIINI-EXE
INI-EXE
"0"
RSTRST-EXE
RST-EXE
READ NVM DATA
"9"
"0"
READ
READ
WRITE DATA
TO NVM
"MUTE"
"0"
WRITE
WRITE
CUSTOMER
SETTINGS RESET "MUTE"
CTV-41
Figure 2-8 illustrates this feature. Signal readings can only be obtained for
digital sources at the antenna inputs. Analog signals will only display the
channel frequency and the fact that it is detected and locked.
The two important items to view are the AGC and Signal-To-Noise ratio
numbers. If the signal decreases, the numbers increase and vice versa.
Acceptable ranges for AGC are 18 to 54. SNR ranges are 16 to 22 for
ATSC and 29 to 38 for 256QAM.
32
Chapter 2 - Service and Troubleshooting
QAM DIGITAL RECEPTION
ATSC DIGITAL RECEPTION
ACCEPTABLE DIGITAL
SIGNAL READINGS
PEAK LEVEL RESETS
WHEN CHANNEL IS
CHANGED
AGC:
18-54
ATSC 16-22
SNR:
QAM 256 MINIMUM 29
64 QAM MINIMUM 22
NTSC ANALOG RECEPTION
FIGURE 2-8
SIGNAL LEVEL CHECK
FIGURE 2-8
SIGNAL LEVEL CHECK
CTV-41
33
Chapter 2 - Service and Troubleshooting
Service Mode
The service mode in the WAX3 chassis is accessed in the traditional way
by starting with the unit turned off and pressing “DISPLAY”, “5”, “VOL+”,
and “POWER” in sequence. The TV will power up and the initial service
graphics shown in Figure 2-9 should appear. A white field from an external
generator was input to the television to make the picture more printerfriendly and to keep the video input graphic from displaying.
Service adjustment availability is extremely limited in this chassis as
compared to other Sony television products. Note that the firmware
versions of the Trident (Digital) and Main Micro (BE for back-end) are
displayed for viewing to see if the unit is loaded with the latest version.
Data Handling
A couple of procedures have changed with the new software installed in
the WAX3 chassis.
Saving (Writing) Data
The traditional method of saving data in Sony televisions was to press
“MUTE”, followed by “ENTER” on the remote commander. This is now
performed by pressing “MUTE” and then the “0” (zero) key. Just remember
that the “0” key on the remote is now what used to be the “ENTER” key.
If the key entry was successful, the word “WRITE” should appear on the
upper right portion of the screen as soon as the mute button is pressed
and turn red (indicating data writing) when the zero key is depressed.
The method for returning the unit to “out of box” condition has changed.
Traditionally, this was performed by pressing “8” followed by “ENTER” on
the remote commander while in the service mode. The new procedure is
to point the remote at the receiver while the unit is turned on. Press the
joystick “UP” and hold it there while turning the unit off with the manual
power button. The screen should go dark but the green power LED will
remain lit. The unit will then cycle and should turn back on to channel 3
and ask what language you would like to use.
White Balance Adjustments
Note that the first service item is a white balance adjustment for the green
drive. The only adjustments that can be performed in this group is white
balance and there is a drive and background adjustment for each of the
3 colors. White balance adjustments will probably not be required even if
the LCD panel or the BU1 board is replaced based on experience with the
WAX2 chassis from last year. These adjustments will only be required if
the customer requests it or if someone else has changed the values.
TIP: If someone changes the white balance adjustments to where it
is noticeable the white balance can be restored to a reasonable level
(assuming the backlights have not aged to the point of significant color
shift) by setting the data values for the red, green and blue drive to 100
and the background for each color to 200.
Reading Back of Data
When performing adjustments there comes a time where things may
appear to be getting out of control or you may be trying an adjustment
and forgot what the data value was. Pressing “9” followed by “0” will read
back the last stored data from NVM. Unplugging the unit from AC power
will also cause a read-back from NVM.
Factory Reset
CTV-41
34
Chapter 2 - Service and Troubleshooting
FIGURE 2-9
MAIN MICRO SERVICE MODE PAGE
FIGURE 2-9
MAIN TV MICRO SERVICE PAGE
CTV-41
35
Chapter 2 - Service and Troubleshooting
QM Service Page
The QM service page is accessed by pressing the “JUMP” button on the
remote commander once the service mode has been accessed. This
switches service data to the ATI Micro also located on the BU1 board.
Although various adjustments are available within this group most of them
are related to customer graphics display properties and are not usually
in need of adjustment. What is important is the availability of test pattern
graphics that can be useful in troubleshooting video issues, especially
those that involve distortion in the video signal.
Once in the QM service group, the initial page will be labeled “INFO”.
Use the “1” key to scroll to the next page labeled “TPNS”. The data value
default is “zero”. By changing the data value with the “3” button, various
test patterns in 4 different resolutions can be displayed on the screen with
the initial color bar pattern shown in Figure 2-10. There are 20 sets of
patterns for the 4 resolutions. They are as follows:
1-20
1080i
21-40
480i
41-60 480p
61-80 720p
Since these patterns are generated by the ATI Micro which is located on
the BU1 board along with the video process circuits, they do not provide
much assistance in isolating video problems as past chassis designs in
which the ATI Micro was located on a separate board. They do, however,
provide a clean, stable video source to assist in closer examination of
the screen display. This is especially useful when trying to determine if a
distortion problem is being caused by the LCD panel.
CTV-41
36
Chapter 2 - Service and Troubleshooting
PAGE 1 BRINGS UP
QM GRAPHICS
DATA SETTING
CHANGES
GRAPHICS
FIGURE 2-10
QM TEST PATTERN GRAPHICS
FIGURE 2-10
QM (ATI MICRO) SERVICE GRAPHICS
CTV-41
37
Chapter 2 - Service and Troubleshooting
Troubleshooting
The WAX3 chassis is serviced at board level. Warranty repairs require
mandatory board level repair unless a specific bulletin is issued calling
for the replacement of an individual component. Because of this,
troubleshooting flowcharts will be utilized in this manual to assist in
diagnosing and repairing the unit. The preferred method is to “triage” the
unit by listening to the customer’s description of the symptoms when a
service request is made. This can be done by technical or non-technical
staff by utilizing the triage worksheet included in this section.
Once the correct part (or parts) is identified during the triage procedure, the
technician can use the flowcharts in the field to perform further diagnosis
of the unit. This is especially useful when more than one part is suspected
as being the cause. The flowcharts are designed to use visual checks, the
use of internal graphic patterns, and in the worst case, the use of a DVM to
check voltages or resistance levels. These quick checks are much quicker
than trying to repair the unit using the “shotgun” method.
the field on what part is more likely to repair the problem. Always visit
the Sony service website to obtain the latest triage worksheet that will be
constantly updated and to view any service bulletins or repair tips to assist
in the repair.
Troubleshooting Flowcharts
The flowcharts in the remainder of this chapter are designed for the
technician who is servicing the unit in the field. They are particularly useful
when more than one part is brought to the location. Visual checks, use
of internal graphics patterns and voltage checks will assist in determining
which part is likely to complete the repair. As with the triage worksheet,
please check the Sony service website to see if the flowcharts have been
updated with new information to assist in the diagnosis of the unit. The
triage worksheets on the website will always have the latest flowcharts
included.
Triage Worksheets
The triage worksheets in the following pages are an example of a useful
tool to aid in determining what part(s) may be needed to be brought to the
repair site to complete a repair. Based on a description of the symptom
by the customer, one can simply go down the column that best fits the
description of the failure and locate what is needed for the repair.
The part that is most likely to repair the failure is marked with a dot. In
some cases there may be more than one part with a dot. In this situation
it is highly recommended to bring both parts to the repair location. Parts
marked with a triangle may also be the cause and the decision on whether
to bring them will need to be determined based on various situations such
as distance to the repair site and the size of the unit (can it easily be
brought to the shop if needed).
Bear in mind that the worksheet illustrated is updated with correct part
numbers and suggested parts as of the writing of this manual but may
be updated as part numbers change due to production changes in the
product and the suggestion list may change as feedback is received from
CTV-41
38
Chapter 2 - Service and Troubleshooting
Sony KDL26S3000 Technical Triage Summary Sheet
1. Confirm the symptom from the customer.
CHASSIS:
2. Select that symptom from the chart.
WAX3
3. Bring all the boards listed for that symptom.
4. Follow the troubleshooting charts in the technical guides to isolate the board.
5. Chart Color Code
RED DOT: Most likely defective part
LAST UPDATED:
BLUE Triangle: Possible defective part
7/16/07
BLACK TEXT: Board and Part # that may correct the symptom
7) The Troubleshooting Flowchart required to determine the actual defective part is listed for each column in the last row of each table.
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
No
Power
Reference
2
3
4
5
BU1 BOARD
▲



G1D BOARD

▲
▲
▲
6
7**
8
10
11
13




N/A
▲
N/A

U1 BOARD
Video - missing or distorted
Stationary
No Green
colored
Video 2
Power LED
lines or
0nly
(Dead Set)
dots
▲

1-789-780-11

LCD Panel
N/A
▲
Problem
▲
C
C
C
POWER POWER POWER POWER
D
C
INV
TEMP
C
C
C
AUDIO COMM COMM
N/A
A-1268-869-A
A-1220-504-C
N/A
N/A
C


TCON LVDS CABLE
Flowchart Reference

Part #
1-474-056-21
N/A
INVERTER
No video
No Audio
all Inputs
B
F
▲
▲
1-834-155-11
1-802-368-11
F
D
H
N/A
**ONLY IF TEMPERATURE ERROR OCCURS IMMEDIATELY
CTV-41
39
Chapter 2 - Service and Troubleshooting
Sony KDL32S3000/SL130 Technical Triage Summary Sheet
1. Confirm the symptom from the customer.
CHASSIS:
2. Select that symptom from the chart.
WAX3
3. Bring all the boards listed for that symptom.
4. Follow the troubleshooting charts in the technical guides to isolate the board.
5. Chart Color Code
RED DOT: Most likely defective part
LAST UPDATED:
BLUE Triangle: Possible defective part
7/19/07
BLACK TEXT: Board and Part # that may correct the symptom
7) The Troubleshooting Flowchart required to determine the actual defective part is listed for each column in the last row of each table.
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
No
Power
Reference
2
3
4
5
BU1 BOARD
▲



G1H BOARD

▲
▲
▲
6
7**
8
10
11
13




N/A
▲
N/A

▲
U1 BOARD

LCD Panel
▲
B
C
C
C
POWER POWER POWER POWER
No video
No Audio
all Inputs


D
C
INV
TEMP
C
C
C

AUDIO COMM COMM
A-1257-244-A
A-1220-504-C
1-789-780-11
N/A

N/A
▲
N/A
Part #
1-474-052-11
N/A
TCON LVDS CABLE
Problem
▲
N/A
INVERTER
Flowchart Reference
Video - missing or distorted
Stationary
No Green
colored
Video 2
Power LED
lines or
0nly
(Dead Set)
dots
B
G
▲
▲
1-834-157-11
1-802-380-11
F
F
H
N/A
**ONLY IF TEMPERATURE ERROR OCCURS IMMEDIATELY
CTV-41
40
Chapter 2 - Service and Troubleshooting
Sony KDL32XBR4 Technical Triage Summary Sheet
1. Confirm the symptom from the customer.
CHASSIS:
2. Select that symptom from the chart.
WAX3
3. Bring all the boards listed for that symptom.
4. Follow the troubleshooting charts in the technical guides to isolate the board.
5. Chart Color Code
RED DOT: Most likely defective part
LAST UPDATED:
BLUE Triangle: Possible defective part
7/16/07
BLACK TEXT: Board and Part # that may correct the symptom
7) The Troubleshooting Flowchart required to determine the actual defective part is listed for each column in the last row of each table.
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
No
Power
Reference
BU1 BOARD
2
3
4
5
▲



6
BH BOARD
G1H BOARD
7**
8
10
11





▲
▲
12
13
N/A

U2 BOARD
▲
▲
N/A
N/A
▲
Video - missing or distorted
Stationary
No Green
colored
Video 2
Power LED
lines or
0nly
(Dead Set)
dots



▲
Part #
A-1268-671-A
A-1236-654-A

1-474-052-11

N/A
INVERTER
No video
No Audio
all Inputs
A-1289-342-A
N/A
1-789-795-11
BU1/BH LVDS CABLE
N/A
1-833-964-11
BH/TCON LVDS
N/A

N/A
▲
LCD Panel
Flowchart Reference
Problem
▲
B
C
C
C
POWER POWER POWER POWER
D
C
INV
TEMP
C
C
C
AUDIO COMM COMM
D
N/A
B
G
▲
▲
1-834-188-21
1-802-411-11
F
F
H
N/A
**ONLY IF TEMPERATURE ERROR OCCURS IMMEDIATELY
CTV-41
41
Chapter 2 - Service and Troubleshooting
Sony KDL40S3000/SL130 Technical Triage Summary Sheet
1. Confirm the symptom from the customer.
CHASSIS:
2. Select that symptom from the chart.
WAX3
3. Bring all the boards listed for that symptom.
4. Follow the troubleshooting charts in the technical guides to isolate the board.
5. Chart Color Code
RED DOT: Most likely defective part
LAST UPDATED:
BLUE Triangle: Possible defective part
7/16/07
BLACK TEXT: Board and Part # that may correct the symptom
7) The Troubleshooting Flowchart required to determine the actual defective part is listed for each column in the last row of each table.
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
No
Power
Reference
BU1 BOARD
2
3
4
5
▲



D1 BOARD
G3 BOARD

▲
6
7**
8
10
11




13
Video - missing or
distorted
Stationary
No Green
colored
Video 2
Power LED
lines or
0nly
(Dead Set)
dots
▲

▲
▲
▲
▲


A-1220-504-C

1-789-771-11
LVDS CABLE

LCD Panel
▲
B
C
C
C
POWER POWER POWER POWER
▲
E
C
INV
TEMP
C
C
C
E
A-1257-243-A
A-1236-537-C

INVERTER
Problem

Part #
A-1236-528-A
U1 BOARD
Flowchart
No video
No Audio
all Inputs
▲
▲
1-834-158-11
▲
B
G
1-802-410-11
F
F
H
AUDIO COMM COMM PANEL
**ONLY IF TEMPERATURE ERROR OCCURS IMMEDIATELY
CTV-41
42
Chapter 2 - Service and Troubleshooting
Sony KDL46S3000 Technical Triage Summary Sheet
1. Confirm the symptom from the customer.
CHASSIS:
2. Select that symptom from the chart.
WAX3
3. Bring all the boards listed for that symptom.
4. Follow the troubleshooting charts in the technical guides to isolate the board.
5. Chart Color Code
RED DOT: Most likely defective part
LAST MODIFIED: 716/2007
BLUE Triangle: Possible defective part
BLACK TEXT: Board and Part # that may correct the symptom
7) The Troubleshooting Flowchart required to determine the actual defective part is listed for each column in the last row of each table.
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
No
Power
Reference
BU1 BOARD
2
3
4
5
▲



6
7**
8
10
11




13
▲

D2 BOARD
▲


Stationary
No Green
colored
Video 2
Power LED
lines or
0nly
(Dead Set)
dots
▲
D1 BOARD
G3 BOARD
Video - missing or
distorted

▲

A-1236-537-C


INVERTER (LEFT)*


▲
C
C
C
C
POWER POWER POWER POWER
▲
E
C
INV
TEMP
C
C
C
E
A-1220-504-C
1-789-788-11
LVDS CABLE
LCD Panel
A-1257-242-A
A-1247-497-A

INVERTER (RIGHT)*
Problem

Part #
A-1236-531-A
U1 BOARD
Flowchart Reference
No video
No Audio
all Inputs
▲

1-789-787-11
▲
1-834-159-11
▲
B
G
1-802-409-11
F
F
H
AUDIO COMM COMM PANEL
* AS VIEWD FROM REAR OF UNIT
**ONLY IF TEMPERATURE ERROR OCCURS IMMEDIATELY
CTV-41
43
Chapter 2 - Service and Troubleshooting
Initial Contact Flowchart A
A
Start
Does unit
turn ON?
No
GO TO
Power Supply
Troubleshooting
Flowchart B
Is video
distorted?
Yes
No
Yes
Is Timer LED
Flashing Red?
Yes
GO TO
Protection Mode
Troubleshooting
Flowchart C
GO TO
Video Distortion
Troubleshooting
Flowchart G
Is audio
present ?
No
GO TO
Audio
Troubleshooting
Flowchart H
Yes
No
Is video
present ?
Yes
No
GO TO
No Video
Troubleshooting
Flowchart F
Distorted
Yes
No
Done
CTV-41
44
WAX3 CHASSIS TRIAGE INITIAL CONTACT FLOWCHART A
Chapter 2 - Service and Troubleshooting
No Power Flowchart B
B
Unit Does
Not Turn On
Audio Present ?
Yes
Timer LED goes
to Flashing Red?
Video problem
Go to flowchart D
Yes
Protection
Go to Flowchart C
No
No
Green Power
LED Lit?
Yes
Remains Green ?
No
3.3VDC
CN4001 -1 on
BU1 Board?
No
Standby Supply Failure
G1D Board (26")
G1H Board (32")
G3 Board 40/46")
CTV-41
Yes
Video problem
Go to flowchart D
No
Yes
High (>2.5V)
CN4001 -3 on
BU1 Board?
Yes
G1D Board (26")
G1H Board (32")
G3 Board 40/46")
No
BU1 Board
WAX3 NO POWER FLOWCHART B
45
Chapter 2 - Service and Troubleshooting
Protect ModeFlowchart C
C
12VDC
CN4002 -1 on
BU1 Board ?
Red Standby
LED Flashing
No
G1D Board (26")
G1H Board (32")
G3 Board (40/46")
Immediately ?
No
Check for possible
ventilation problem
Yes
Yes
BU1 Board
2X
12V Main
Yes
7X
Temperature
Yes
BU1 Board
No
No
3X
Trident 3.3V
8X
Speaker
Protect
Yes
BU1 Board
No
No
4X
Reg 5V
Yes
Yes
BU1 Board
10X or 11X?
Yes
No
No
5X
Panel 12V
12X
HFR (32XBR
Only)
Yes
CTV-41
BH Board
No
No
6X
Inverter Fail
Yes
Yes
Go To Inverter
Troubleshooting
Flowchart D (26/32")
Flowchart E (40/46")
13X
Balancer
Yes
Go To Inverter
Troubleshooting
Flowchart D (26/32")
Flowchart E (40/46")
46
Chapter 2 - Service and Troubleshooting
26/32" Inverter Error Flowchart D
D
Inverter Error
6X (26/32")
Backlights turn
on before
shutdown?
Yes
High at pins 3
or 5 of CN4003
BU1 Board ?
No
Yes
Inverter or LCD
Panel
No
BU1 Baord
24VDC
CN001 pins 1~5
Inverter Board ?
Yes
Inverter
No
G1D Board
G1H board
CTV-41
47
Chapter 2 - Service and Troubleshooting
40/46" Inverter Error Flowchart E
E
Inverter Error
6X (40/46")
40" or 46" Model ?
40"
Backlights turn
on before
shutdown?
Yes
LCD Panel
46"
Screen lit evenly
across ?
Observe which
side of screen is
darker before
shutdown
No
Check cable from G3
board . Replace G3
board if OK
Yes
CN6707 pin 3
D1 Board (high?
D2 Board
D1 Board
LCD Panel
40" or 46" Model ?
No
Left
Right
Yes
No
390VDC
across pins 1 & 3
CN6600 D1
Board?
Left or right side ?
40"
Check LCD panel for
damage . If OK
replace D 1 Board
46"
Unplug
CN6707 from
D1 Board
No
BU1 Board
No
CN6707 pin
3 or 7 still high?
Yes
CN6707 pin
3 or 7 high?
No
D2 Board
Yes
BU1 Board
D1 Board
Yes
CTV-41
48
Chapter 2 - Service and Troubleshooting
No Video Flowchart F
F
26/32" or
40/46"
Model?
No Picture
26/32"
Backlights on?
No
Check connection
from Power Supply to
Inverter. If OK
Go to Flowchart D
40/46"
Approx
390VDC across
pins 1 & 3 CN6600
D1 Board?
No
G3 Board
Yes
High at
CN6707 -3 D1
Board ?
Yes
D1 Board
D2 Board
See Flowchart E
No
BU1 Board
Yes
No picture all
input sources ?
Yes
Check LVDS connector
from BU1 Board to LCD
Panel. If OK replace BU1
Board
No
No picture front
inputs ?
No
U1 Board (S Models )
U2 Board (XBR Models)
Yes
Done
CTV-41
49
Chapter 2 - Service and Troubleshooting
Video Distortion Flowchart G
G
Single colored
vertical line?
Distorted
Picture
Yes
Stationary lines
or spots
Yes
No
Multiple colored
lines evenly
spaced?
No
Pixel stuck on
or off
No
Done
Yes
Yes
Pixel Failure . Contact
Technical Support for
assistance
LCD Panel
No
All input
sources?
Yes
Check LVDS connector
from BU1 Board to LCD
Panel. If OK replace BU1
Board
LVDS
Connectors from
BU1 Board to
Panel OK ?
No
LVDS Cable
Yes
No
LCD Panel
Front inputs ?
Yes
U1 Board (S Models )
U2 Board (XBR Models)
No
Done
CTV-41
50
Chapter 2 - Service and Troubleshooting
Audio Flowchart H
H
No or Distorted
Audio
All Sources ?
Yes
BU1 Board
No
Analog Tuner ?
Yes
All Channels?
No
Front Inputs
only?
No
Check “SAP” is not
turned on in customer
setup menu
Yes
Yes
U1 Board (S Models )
U2 Board (XBR Models)
BU1 Board
No
HDMI Only?
Yes
Check that connected
device is set for PCM
audio output
No
Done
CTV-41
51
Chapter 2 - Service and Troubleshooting
Service Test Points
Due to heavy shielding of the BU1 board, voltage and signal test points
are virtually inaccessible. Since all video processing is performed on
this board it is not necessary to view signals. Video issues are resolved
by observation of what appears (if anything) on the LCD screen. The
important test points are located on the power supply boards. Inverter
error test points for the 26/32” models are located on the inverter board.
Inverter drive and error lines for the 40/46” models can be checked on
the power supply board. Figures 2-11 through 2-14 provide illustrations of
the voltage test points of the 3 different power supplies and inverter test
points used in the WAX3 chassis.
CTV-41
52
Chapter 2 - Service and Troubleshooting
CN2
CN3
1~3
4,5
7,8
8,9
10
11
12
13
GROUND
6.5V
AUDIO GROUND
AUDIO 13.5V
AC_OFF_DET (NORM LOW)
(ON = 2.8V)
POWER ON
GROUND
STBY 3.3V
1,2
3,4
5~8
9~12
GROUND
12V
GROUND
24V
FIGURE 2-11
2-11
FIGURE
26"
G1D
TEST
POINTS
26” G1D BOARD TEST
POINTS
CTV-41
53
Chapter 2 - Service and Troubleshooting
CN6201
1 – STBY 3.3V
2 – GROUND
3 – POWER ON
4 – AC DETECT
5,6 – AUDIO 13V
7,8 – AUDIO GROUND
9,10 – UNREG 6V
CN6202
1~4 – REG 24V
5~8 – GROUND
9,10 – REG 12V
11,12 – GROUND
FIGURE 2-12
G1H TEST POINTS
FIGURE 2-12
32” G1H BOARD TEST POINTS
CTV-41
54
Chapter 2 - Service and Troubleshooting
CN001 (SHOWN WITH SHIELD
REMOVED)
1~5
6~10
11
12
14
24V
GROUND
INV_ERROR (NORM LOW)
BACKLIGHT ON (3.3V = ON)
DIMMER (1.2~2.8VDC)
FIGURE 2-13
FIGURE 2-13
26/32 INVERTER TEST POINTS
26/32” INVERTER TEST POINTS
CTV-41
55
Chapter 2 - Service and Troubleshooting
CN6501 , CN6502
ONE USED IN 40"
BOTH USED IN 46"
CN6004
1 – GROUND
2 – DIMMER
3 – BACKLIGHT ON
4 – INVERTER ERROR
6 – REG 12V
7 – BALANCER ERROR
1 – PFC 380 V
3 – PFC GND
CN6203
1~3 – GROUND
4~6 – REG 12V
7 – BALANCER ERROR
6 – REG 12V
7 – BALANCER ERROR
9 – INVERTER ERROR
10 – BACKLIGHT ON
11 – DIMMER
CN6202
1,2 – GROUND
3,4 – 6V
5,6 – AUDIO GROUND
7,8 – AUDIO 13V
9 – AC OFF DET
10 – POWER ON
12 – STBY 3.3V
FIGURE 2-14
FIGURE
2-14POINTS
G3 TEST
40/46"
40/46” G3 BOARD TEST POINTS
CTV-41
56
Chapter 3 - Disassembly
Overview
Disassembly of the WAX3 chassis models is relatively straight forward.
The rear cover is removed by locating and screws marked by an arrow.
Most of the screws will be 4mm self-tap (particularly those around the
perimeter of the cover) with a couple of smaller 3mm self-tap and machine
screws in the area where the HDMI and A/V input jacks are located. The
only large machine screws for the rear cover will be attached to the wall
mount brackets.
Once the rear cover is removed, the wall mount brackets may be removed
(even while the unit is mounted to its pedestal) since they are not part of
the panel bracing. This is illustrated in Figure 3-1 During the disassembly
procedures described in this chapter, all references to right and left
pertaining to the wall mount brackets will be made as viewing from the
front of the unit.
Inverter Board Removal (26 and 32” Models)
Replacement of the inverter board begins with removal of the shield as
shown in Figure 3-2. Once the shield is removed, the power and control
connector is unplugged and the board pulled out from the lamp socket
connectors.
WARNING! Do not, under any circumstances, remove the screws
securing the plastic strip holding the lamp socket connectors! This
is a new design where the ends of the fluorescent backlight tubes
are seated into the connectors. If this plastic strip is moved there is
a high likelihood that one or more of the backlights will be damaged,
requiring replacement of the LCD panel. This warning also applies
to the 40” and 46” models that use a balancer board mounted to the
panel.
For demonstration purposes in this manual the disassembly all the way
to LCD panel removal will be illustrated using a 32” and 46” model. Even
though different boards are used with the various sizes, removal of the
LCD panel is relatively the same. Any connectors that are attached to the
panel (such as LVDS to TCON) or circuit boards attached to the bezel
(IR receiver and function buttons) will need to be unplugged. The main
screws securing the panel are located at the top and bottom of the wall
mount brackets along with 2 to 4 additional screws along the bottom edge
of the chassis. The wall mount brackets will be left intact to provide a
gripping area for the removal. The panel can then be easily lifted out and
transferred to another flat cushioned surface for removal of the circuit
boards and additional hardware to transfer to the new panel.
WARNING! When removing hardware from the old panel to the new
panel, note any machine screws (large 4mm size) that are shorter
than the ones used for the rear cover. These screws will mount
hardware directly to the rear of the panel and are short so as to not
penetrate deep into the panel and damage the polarizer or fluorescent
backlight tubes.
CTV41
57
Chapter 3. Disassembly
WALL MOUNT BRACKETS
FOR ALL MODELS CAN BE
REMOVED FOR ACCESS TO
CIRCUIT BOARDS. BOTTOM
IS SECURED WITH MACHINE
SCREW AND TOP HOOKS
ONTO UPPER MOUNTS.
OBSERVE LEFT AND RIGHT
MARKINGS WHEN REINSTALLING WALL MOUNT
BRACKETS.
FIGURE 3-1
CIRCUITFIGURE
BOARD3-1
ACCESS
CIRCUIT BOARD ACCESS
CTV41
58
Chapter 3. Disassembly
WARNING!
NEVER REMOVE THE
SCREWS SECURING THE
PLASTIC STRIP HOLDING
THE LAMP SOCKETS.
DAMAGE TO THE
BACKLIGHT TUBES WILL
OCCUR!
REMOVE
CONNECTOR AND
PULL BOARD TO
THE RIGHT
REMOVE SCREWS
SECURING
SHIELD
INVERTER BOARD REMOVAL
SHIELD REMOVAL
FIGURE 3-2
26/32" INVERTER
FIGURE 3-1 REMOVAL
CIRCUIT BOARD ACCESS
CTV41
59
Chapter 3. Disassembly
26” LCD Panel Removal
Figures 3-3 through 3-7 illustrate the necessary steps to remove the LCD
panel. The pedestal base and wall mount brackets are removed first. The
wall mount brackets are removed when a 26” or 32” panel is replaced, but
not when changing out a 40’ or 46” panel since they will be needed grasp
and lift the heavier panel. Always remove the speakers and set them on
the sub-chassis assembly. The magnets on the speakers will stick to the
sub-chassis or panel when they are lifted from the bezel and could cause
damage to the panel or speakers.
Note the location of all wire harnesses and any tape securing them. The
routing of the wires into their original location is critical to minimize EMI.
Use caution when unplugging connectors. Most have a locking mechanism
that must be released before unseating them. This is especially true for
the LVDS connector between the BU1 board and the LCD panel.
Once the sub-chassis assemblies have been released by removing the
indicated screws and all required cables unplugged, stack the components
together and carefully lift them from the panel making sure that no cables
or connectors get caught while removing the parts.
Note any hardware that is still on the original panel and transfer to the
replacement as needed.
CTV41
60
Chapter 3. Disassembly
STAND SCREWS
STAND BRACKET
COVER SCREWS
FIGURE 3-3
FIGURE 3-3
26/32 PANEL REMOVAL (STEP 1)
26/32” PANEL REMOVAL (STEP 1)
CTV41
61
Chapter 3. Disassembly
REMOVE CN3008 FROM H4 BOARD
LIFT RIGHT SPEAKER OUT AND REST
ON POWER SUPPLY
LIFT U1 BOARD AND LEFT SPEAKER
OUT AND REST ON BU1 BOARD
FIGURE 3-4
26/32 LCD PANEL REMOVAL (STEP 2)
FIGURE 3-4
26/32” PANEL REMOVAL (STEP 2)
CTV41
62
Chapter 3. Disassembly
REMOVE SCREWS FROM
INDICATED LOCATIONS
ONCE BU1 BOARD IS LOOSE,
MOVE IT TO THE RIGHT AND
UNPLUG THE LVDS CABLE
FROM THE PANEL
FIGURE 3-5
26/32 LCD PANEL REMOVAL (STEP 3)
FIGURE 3-5
26/32” PANEL REMOVAL (STEP 3)
CTV41
63
Chapter 3. Disassembly
CHECK THAT ALL CABLES ARE FREE
AND SET SUB-CHASSIS, SPEAKERS
AND BOARDS ASIDE. PANEL CAN
NOW BE LIFTED FROM BEZEL
ASSEMBLY
FIGURE 3-6
FIGURE
3-6
REMOVAL
(STEP 4)
26/32 LCD PANEL
26/32” PANEL REMOVAL (STEP 4)
CTV41
64
Chapter 3. Disassembly
TRANSFER BRACKET ASSEMBLY TO
REPLACEMENT PANEL
FIGURE 3-7
26/32 LCD PANEL REMOVAL (STEP 5)
FIGURE 3-7
26/32” PANEL REMOVAL (STEP 5)
CTV41
65
Chapter 3. Disassembly
46” Panel Removal
Removal of a 46” panel is similar to the procedures for a 26’ or 32” panel
and also applies to the 40” panel. The wall mount brackets will be left
intact because the entire panel and sub-chassis with circuit boards will be
lifted from the bezel. After this is done, the sub-chassis assemblies and
circuit boards will be removed from the LCD panel and transferred to the
replacement unit. The steps required to do this are shown in Figures 3-8
through 3-13.
CTV41
66
Chapter 3. Disassembly
DO NOT REMOVE THE
WALL MOUNT BRACKET
SCREWS AT THIS TIME
REMOVE THE INDICATED
SCREWS TO RELEASE THE
PEDESTAL BASE AND
REAR PLASTIC COVER
FIGURE 3-8
40/46" PANEL REMOVAL (STEP 1)
FIGURE 3-8
40/46” PANEL REMOVAL (STEP 1)
CTV41
67
Chapter 3. Disassembly
UNPLUG CN101 AND
REMOVE H1 BOARD
REMOVE 2 SCREWS
SECURING TOP
BRACKET
FIGURE
FIGURE3-9
3-9
40/46"
PANEL
REMOVAL
40/46” PANEL REMOVAL(STEP
(STEP 2)
2)
CTV41
68
Chapter 3. Disassembly
REMOVE 2 SELFTAP SCREWS
UNPLUG SPEAKER
CONNECTORS AND
REMOVE SPEAKER
UNPLUG SPEAKER
CONNECTORS AND
REMOVE SPEAKER
UNPLUG CN301
FROM H3 BOARD
FIGURE 3-10
40/46" PANEL REMOVAL (STEP 3)
FIGURE 3-10
40/46” PANEL REMOVAL (STEP 3)
CTV41
69
Chapter 3. Disassembly
GRASP WALL MOUNT BRACKETS
LIFT PANEL FROM BEZEL
FIGURE 3-11
40/46" PANEL REMOVAL (STEP 4)
FIGURE 3-11
40/46” PANEL REMOVAL (STEP 4)
CTV41
70
Chapter 3. Disassembly
REMOVE 8 MACHINE SCREWS SECURING
WALL MOUNT BRACKETS TO PANEL
IMPORTANT! THESE SCREWS ARE VERY
SHORT SO AS TO NOT PENETRATE DEEPLY
INTO THE PANEL
FIGURE
FIGURE 3-12
3-12
40/46"
40/46” PANEL
PANEL REMOVAL (STEP 5)
CTV41
71
Chapter 3. Disassembly
REMOVE INDICATED SCREWS AND
CONNECTORS. LIFT CLOTH TAPE
BUT LEAVE ATTACHED TO CABLES.
NOTE ROUTING OF WIRING AND
PLACEMENT OF MOUNTING TAPE.
THIS IS IMPORTANT FOR
MINIMIZING EMI.
FIGURE 3-13
40/46" PANEL REMOVAL (STEP 6)
FIGURE 3-13
40/46” PANEL REMOVAL (STEP 6)
CTV41
72
and i.Link are trademarks of Sony Electronics
CTV410507
2007 Sony Electornics, Inc.
SEL Service Company
16530 Vill Esprillo
National Training Dept. MZ3215
San Diego, CA 92127
Reproduction in whole or part without written permission is prohibited. All rights reserved
11/12/07