Sony KDL-52LX900 Schematic
Segment: 1a
SERVICE MANUAL
AZ1-HCHASSIS
9-888-338-04
LCD Digital Color TV
KDL-40/52/60LX900,903,904,905(AEP/UK)
1.0 06/2010 No revisions or updates are applicable at this time.
2.0 06/2010 Revision to T-CON Board Part Numbers (P.46,50,54).
3.0 06/2010 Add Part Number for 3D Glasses (P.57).
4.0 08/2010 Caution – Handling LCD Panel (Tengo) (P59)
ORIGINAL MANUAL ISSUE DATE: 6/2010
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
SERVICE MANUAL
Version Date Subject
SERVICE MANUAL
Segment: 1a
AZ1-HCHASSIS
9-888-338-04
LCD Digital Color TV
KDL-40/52/60LX900,903,904,905(AEP/UK)
SERVICE MANUAL
3
MODEL COLOR COMMANDER DEST.MODEL COLOR COMMANDER DEST.
KDL-40LX900 Black RM-ED030 AEP
KDL-40LX903 Black RM-ED030 UK
KDL-40LX904 Black RM-ED030 AEP
KDL-40LX905 Black RM-ED030 AEP
KDL-52LX900 Black RM-ED030 AEP
KDL-52LX904 Black RM-ED030 AEP
KDL-52LX905 Black RM-ED030 AEP
KDL-60LX900 Black RM-ED030 AEP
KDL-60LX903 Black RM-ED030 UK
KDL-60LX905 Black RM-ED030 AEP
MODEL LIST
KDL-40/52/60LX900,903,904,905(AEP/UK)
4
WARNINGS AND CAUTIONS -ENGLISH
These servicing instructions are for use by qualified service personnel only.
To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to
do so.
CAUTION
WARNING!!
An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis.
The chassis of this receiver is directly connected to the ac power line.
Be sure to follow these guidelines to protect your property and avoid causing serious injury.
• Carry the TV with an adequate number of people; larger size TVs require two or more people.
CARRYING THE TV
• Correct hand placement while carrying the TV is very important for safety and to avoid damages.
Components identified by shading and ! mark on the schematic diagrams, exploded views, and in the parts list are critical for safe operation.
Replace these components with Sony parts whose part numbers appear as shown in this manual or in supplements published by Sony. Circuit
adjustments that are critical for safe operation are identified in this manual. Follow these procedures whenever critical components are replaced or
improper operation is suspected.
SAFETY-RELATED COMPONENT WARNING!!
Replace only with the same or equivalent type of batteries. Using incorrect replacement batteries can lead to an explosion.
ABOUT THE BATTERY OF THE 3D GLASSES
KDL-40/52/60LX900,903,904,905(AEP/UK)
5
WARNINGS AND CAUTIONS - FRENCH
ATTENTION!!
Ces instructions de service sont à l’usage du personnel de service qualifi é seulement.
Pour prévenir le risque de choc électrique, ne pas faire l’entretien autre que celui contenu dans le Mode d’emploi à moins que vous soyez qualifi é
faire ainsi.
Afi n d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout
WARNING!!
dépannage. Le chássis de ce récepteur est directement raccordé à l’alimentation du secteur.
Tenez compte de ce qui suit pendant l’installation du téléviseur :
• Débranchez tous les câbles avant de transporter le téléviseur.
• Transportez le téléviseur avec le nombre de personnes approprié ; un téléviseur de grande taille doit être transporté par au moins deux personnes.
• Lors du transport du téléviseur, l’emplacement des mains est très important pour votre sécurité, ainsi que pour éviter de causer des dommages.
POUR TRANSPORTER LE TÉLÉVISEUR
Afi n d’eviter tout risque d’electrocution provenant d’un chassis sous tension, un transformateur d’isolement doit etre utilise lors de tout
depannage. Le chassis de ce recepteur est directement raccorde a l’alimentation du secteur.
ALERTE!!
Les composants identifi es par une trame et par une marque ! sur les schemas de principe, les vues explosees et les listes de pieces sont d’une
importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont le numero de piece est indique dans
le present manuel ou dans des supplements publies par Sony. Les reglages de circuit dont l’importance est critique pour la securite du
fonctionnement sont identifi es dans le present manuel. Suivre ces procedures lors de chaque remplacement de composants critiques, ou lorsqu’un
mauvais fonctionnement suspecte.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
KDL-40/52/60LX900,903,904,905(AEP/UK)
WARNINGS AND CAUTIONS
6
1) Do not press on the panel or frame edge to avoid the risk of electric shock.
2) Do not scratch or press on the panel with any sharp objects.
3) Do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
4) Do not expose the LCD panel to direct sunlight.
5) Avoid contact with water. It may cause a short circuit within the module.
6) Disconnect the AC power when replacing the backlight (CCFL) or inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms.)
7) Always clean the LCD panel with a soft cloth material.
8) Use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short.
9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
10) It is recommended not to exceed 1 hour of Power-On nor Burn-in period with LCD panel face down condition, in repair activity.
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by using a wrist band.
When repairing the LCD panel on the wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.
KDL-40/52/60LX900,903,904,905(AEP/UK)
WARNINGS AND CAUTIONS
7
• Replace the Glass Assembly in a brightly lit and clean room.
• Place the replacement Glass Assembly on a dark cloth to make it easier to see dust and dirt particles.
• Wear anti static gloves to avoid leaving finger prints on the glass.
• Use a dry, soft Micro Fiber cloth, such as a lint free polishing cloth, to gently wipe the glass to remove any dust or dirt particles.
HANDLING THE GLASS ASSEMBLY
Use the following precautionary guidelines when replacing the Glass Assembly to avoid material degradation or screen coating degradation, and
ensure that dust, dirt, or fingerprints are not left between the glass and the LCD panel.
air duster (spray can type).
• If the glass needs additional cleaning, slightly moisten the cloth with a diluted mild soap or mild detergent solution, or use a compressed
• After replacing the Glass Assembly, verify there are no dark spots or finger prints visible on the screen.
CAUTION:
scratch the screen which may result in permanent damage.
• Do Not use paper towels, any type of abrasive pad, rags, rubber or vinyl materials to clean the screen. Using these materials could easily
benzene, thinner or insecticide. Using any of these harsh cleaners may result in permanent damage to the screen.
• Do Not use any cleaning product containing alkaline/acid cleaner, scouring powder, or volatile solvent, such as alcohol, ammonia,
• Do Not spray water or detergent directly onto the TV screen . If liquid drips into the bottom of the screen it may cause a failure.
KDL-40/52/60LX900,903,904,905(AEP/UK)
8
board surface for solder splashes and bridges.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety checks before
releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered connections. Check the entire
resistors.
replaced. Be absolutely certain that you have replaced all the insulators.
previous repair. Point them out to the customer and recommend their replacement.
2. Check the interboard wiring to ensure that no wires are “pinched” or touching high-wattage
3. Check that all control knobs, shields, covers, ground straps, and mounting hardware have been
4. Look for unauthorized replacement parts, particularly transistors, that were installed during a
5. Look for parts which, though functioning, show obvious signs of deterioration. Point them out
to the customer and recommend their replacement.
cord to the customer.
6. Check the line cords for cracks and abrasion. Recommend the replacement of any such line
7. Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed
metal parts for AC leakage. Check leakage as described below.
8. For safety reasons, repairing the Power board and/or Inverter board is prohibited.
KDL-40/52/60LX900,903,904,905(AEP/UK)
SAFETY CHECK-OUT
9
Leakage Test
The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to
any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
manufacturers’ instructions to use these instructions.
for this job.
1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the
2. A battery-operated AC milliampmeter. The Data Precision 245 digital multimeter is suitable
voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low
3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC
voltage scale.
The Simpson’s 250 and Sanwa SH-63TRD are examples of passive VOMs that are suitable.
Nearly all battery-operated digital multimeters that have a 2 VAC range are suitable (see
Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet
boxes is also at earth ground.
If the retaining screw is to be used as your earth ground, verify that it is at ground by measuring the
resistance between it and a cold-water pipe with an ohmmeter. The reading should be zero ohms.
If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble- light (not a neon lamp)
between the hot side of the receptacle and the retaining screw. Try both slots, if necessary, to
locate the hot side on the line; the lamp should light at normal brilliance if the screw is at ground
potential (see Figure B).
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10
D i agno st i c Item D escri p t ion
- RGB sensor I2C Error
DTT_WDT DTT Error
DC_ALERT DC_ALERT
AUD_PRO T Audio Abnormal Detection
(Screen D ispl ay)
Service menu Item name
3
2 M AIN_POWE M ain Power Ov er Voltage Protection
STB Y LED
Flash time
HFR_E RR HFR E r r or
P_ID_ERR Panel ID NVM Error
TCON_ERR T-CON Error
5
4 BALANCER_ Panel Balancer E r r or
6 BA CKLITE_ Back Light Error (Panel Inverter)
FAN_ERR FA N Error (Not Detected. Display Only )
TE MP_E RR Thermal Error
7
8 - Not used
9 - Not used
10 - Not used
11 - Not used
12 - Not used
- RGB_SEN RGB Sensor ACK Error
SELF DIAGNOSIS FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED will automatically begin to flash.
The number of times the LED flashes translates to a probable source of the problem.
A definition of the STANDBY LED flash indicators is listed in the instruction manual for the user’s knowledge and reference.
If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past
problems and how often these problems occur.
DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will flash a set number
of times to indicate the possible cause of the problem.
If there is more than one error, the LED will identify the first of the
problem areas.
Result for all of the following diagnostic items are displayed on
screen.
If the screen displays a “0”, no error has occurred .
KDL-40/52/60LX900,903,904,905(AEP/UK)
SELF DIAGNOSIS FUNCTION
11
DISPLAY OF STANDBY LED FLASH COUNT
0.5
0.5
3
SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up
past occurrences of failure for confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
KDL-40/52/60LX900,903,904,905(AEP/UK)
12
SELF DIAGNOSIS FUNCTION
Error count (00-99)
Error history (Last failure time beforehand)
Error history (Failure time before last)
Error history (The last failure time)
Total operation time by hour (MAX:65535)
Boot count (MAX:65535)
Panel operation time by hour (MAX:65535)
SELFCHECH<1>NEXTPAGEŞ>
Item name
[SELF DIAGNOSTIC SCREEN DISPLAY]
000RGB_SENŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
002MAIN_POWEŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
003DC_ALERTŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
003AUD_PROTŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
003DTT_WDTŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
004BALANCERŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
005HFR_ERRŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
005TCON_ERRŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
005P_ID_ERRŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
006BACKLITEŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
STBY LED flash time
007TEMP_ERRŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
007FAN_ERRŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
010RESERVEDŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
011RESERVEDŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
12345Ş67891Ş23456
KDL-40/52/60LX900,903,904,905(AEP/UK)
SELF DIAGNOSIS FUNCTION
13
1. Error history and Error count : Press the Channel 8 => Channel 0 .
2. Panel operation time : Press the Channel 7 => Channel 0 .
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen.
After you have completed the repairs, clear the result display to “0”.
Clearing the Self Check Diagnostic List
Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button on the remote or the POWER button on
the TV.
KDL-40/52/60LX900,903,904,905(AEP/UK)
14
KDL-40LX900/903/904/905
KDL-40LX900/903/904/905
SEC 1. DISASSEMBLY
1-1. MOVIE LIST
KDL-52LX900/904/905
KDL-52LX900/904/905
KDL-60LX900/903/905
KDL-60LX900/903/905
KDL-40/52/60LX900,903,904,905(AEP/UK)
Item name
CHASSIS SERVICE
000 CXD2813R
000 H_DET_NOSIG_CNT1
15
Data
Category name
Press “OPTIONS”
or “JUMP” button
DD1.016J00AA SD1.010W00AA
(DM1.301J00AA) RF01.05
WP00.521J00AA ID1C117081
Whenever you press “OPTIONS” or “JUMP” on remote, each service mode is changed.
“Digital” -> “Chassis” -> “Sub”
DIGITAL SERVICE
Note: First of all, when you enter Service Mode, you can see “Digital” service mode.
1) Turn on the main power switch to place this set in standby mode.
2) Press the buttons on the remote commander as follows, and entering service mode.
HOW TO ENTER SERVICE MODE
3) Service mode display.
Item number
Category number
001op
000VERS ŞŞŞ
<MAIN> <SUB>
DM1.301J00AA SM1.010W00AA
M2.105C SB1.000W00AA
SEC 2. ADJUSTMENT
ID1C117081 LTY320AB01
PID04020000
WF:2.0.0.99 <BEM>
WF:0B BM1.012W00LU
CameraFW BB1.000W00LU
ŞŞŞ.ŞŞŞŞŞŞŞŞŞ
CameraFW BD1.011J46LUX
KDL-40/52/60LX900,903,904,905(AEP/UK)
AD JUSTMENT
16
The flow of control
<Test>+<TV>/<Display><5><Vol Up><Power>Service mode on
Function
4) How to use the remote commander.
<1>/<4>
<Other> / <Power off + on>Service mode off
Item up / down
<3>/<6>
<2>/<5>
Data up / down
Category up / down
<9> + <0>
<8> + <Mute> + <0>
Test reset
Read data
<10 or 0>
Execute
<Mute> + <0>
<Jump> / <Option>
Write data
Change module
5) After entering service mode, then turn off the power switch.
KDL-40/52/60LX900,903,904,905(AEP/UK)
AD JUSTMENT
17
DIGITAL SERVICEWB*1R_DRV128
0: x 0.5, 128: x 1, 255: x1.5
Gain
2G_DRV128
3B_DRV128
Offset
4R_BKG128
5G_BKG128
128: offset 0
6B_BKG128
PleaseinputWBitems
(0Ş255)
ŞŞŞ
DIGITAL SERVICE
006WB
When returning on the previous page, press “return”.
a. Press “0” or “10” on remote to enter WB adjustment mode.
b. Press number key “1”~”6” directly. “*” stamp move.
c. Press “12 / enter / select” to decide and advance next step.
WHITE BALANCE ADJUSTMENT
Note: Please execute this adjustment if necessary.
Change Data of “Digital” service mode. (“006 WB” category)
It shows red “WRITE”. It indicate writing is processing.
d. Change data by number key “0”~”9” directly. (0-255)
e. Press “12 / enter / select” to save data.
f. Writing process is done at this point.
000WHITE_BALANCE___
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AD JUSTMENT
18
It shows green “SERVICE” changes to green “WRITE”.
a. Press “Mute” on remote.
b. Press “0” or “enter” on remote. Green “WRITE” changes to red “WRITE”. It indicate writing is processing.
c. After a while, red “WRITE” changes to green “SERVICE”. Writing process is done at this point.
1) Change Data of “Chassis” or “Sub” service mode
2) Write data for “Chassis” or “Sub” service mode
SAVE CHANGING DATA
3) TV reboot is necessary for applying data change.
CHASSIS WRITE
000 CXD2813R
000 H_DET_NOSIG_CNT1
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AD JUSTMENT
19
DIGITAL SERVICE
004TUNER
000A_NOSIG_DET 001
DIGITAL SERVICE
003DIG_SRV_MODE
000TEST_PATTERN ŞŞŞ
DIGITAL(DIG_SRV_MODE)SERVICE
TEST_PATTERN
2Audio
*1Video
a. Press “2 / 5” on remote to select (up / down) category.
b. Press “1 / 4” on remote to select (up / down) Item.
c. Press “0 / 10” on remote to select item.
1) Change Data of “Digital” service mode. (except “003 DIG_SRV_MODE” category)
Note: “Digital” service mode don’t have to Save. (except “002 MODEL” category)
CHANGE DATA
“003 DIG_SRV_MODE” is one category of “Digital” service mode.
Please note because this operation is special.
2) Change Data of “Digital” service mode. ( “003 DIG_SRV_MODE” category)
when returning on the previous page.
a. Press “2 / 5” on remote to select “003 DIG_SRV_MODE”.
b. Press “1 / 4” on remote to select (up / down) Item.
c. Press “0 / 10” on remote to select item.
d. Press number key “1”~”9” directly. “*” stamp move.
e. Press “12 / enter / select” to decide and advance next step. Press “return”,
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AD JUSTMENT
20
3) Write data for “Digital” service mode. ( “002 MODEL” category)
Note: This procedure operation, when replaced the B board.
Write
DIGITAL SERVICE
002MODEL
000SEG 01:2aŞ3
When the wrong setting is written, TV may not operate.
000 SEG Product ID - segment information
Note: Do not write a wrong segment or destination information in Product ID.
001 DESTProduct ID – destination information
It shows red “WRITE”. It indicate writing is processing.
a. Change data for each model.
b. Press “0” or “enter” on remote.
c. Writing process is done at this point.
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AD JUSTMENT
21
Press “8” on remote.
It shows green “SERVICE” changes to green “RST-”.
Press “mute” on remote.
Added green “EXE” after green “RST-”.
After a while, red “EXE-RST” changes to green “SERVICE”.
And all LED lights.
Writing process is done at this point.
a. Move to “Digital” service mode.
How to do shipping condition.
SET TO SHIPPING CONDITION
d. Press “0” or “enter” on remote. Green “EXE-RST” changes to red “EXE-RST”. It indicate writing is processing.
TIMER Standby POWER
<Another way>
You can set to shipping condition w/o entering Service Mode.
-> “Cursor Up” on remote + “Power Key” on Front panel.
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AD JUSTMENT
22
SUB SERVICE
001 TD
000 ! EMIT_STR1
0: Strong (Default)
1: Weak
a. Select “001 TD” category by pressing “2 / 5” on remote.
b. Select “000 EMIT_STR” item by pressing “1 / 4” on remote.
c. Change data from “0” to “1” by pressing “3 / 6” on remote.
CHANGE THE EMITTER OUTPUT LEVEL
Note: To reduce the emitter LED output power strength.
Change Data of “Sub” service mode
d. Save & Reboot.
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23
No Audi o
can't
connect
Wireless
No
Remote Network Audio
Remote
No vid e o
all Inputs
No video
one of Inputs
No
Symptoms - Shutdown. Po wer LE D
Video - missing or distorted
Power
blinking red diagno stics seq uences
or dots
Stationary
colored lines
No G reen
(Dead Set)
Power LED
TEMP
PANEL
(INVERTER)
(TCON)
PANEL
POWER
DTT
AUDIO
POWER
234567
POWER
: doubtf ul part
Reference
BEHS BOARD
G* BOARD
HLR BOARD
WIFI MODULE
LVDS CABLE
LCD PANEL
Problem
: Few possibility
Note: Power board is different in name every inch. Therefore this section displays difference point in "*".
SEC 3. TROUBLE SHOOTING
3-1. TRIAGE CHART
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24
*
See
Can’t connect network
TROUBLE SHOOTING
No
Yes
Is the network
connection OK?
See
Camera malfunction
No
Is the camera
function OK?
Yes
See
3D malfunction
No
Is the 3D
function OK?
Yes
Problem
RGB Sensor
No
function OK?
Is the RGB sensor
000:RGB_SEN -> Increment
* On Self Check Display
Yes
END
START
3-2. FLOW CHART
See
No Power
No
stay on when the
TV is switched on ?
Does the Power Led
Yes
See
Standby LED Blink
Yes
No
blink ?
Is the Standby Led
See
No Picture / No Sound
No
Sound OK ?
Is the Picture and
Yes
Do the buttons
See
No
on the TV & Remote
TV/ Commander
button malfunction
Commander work
Yes
properly?
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25
TROUBLE SHOOTING
NG
Replace
NG
G* Board
BEHS Board Harness
Between G* Board to
OK
Harness
OK
3-3. NO POWER
No Power
Check STBY 3.3V
at 1 pin of CN3800
on the BEHS Board
BEHS Board
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TROUBLE SHOOTING
26
G* Board
NG
2 times Blinkings
OK
Replace
BEHS Board Harness
Between G* Board to
12V NG
12V OK
pins 6/7 of
CN3800 on
Check REG12V at
the BEHS Board
Harness
BEHS Board
1) 2 times blinkings (Main Power Error)
3-4. STANDBY LED BLINK
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27
G* Board
AUDIO
TROUBLE SHOOTING
NG
at pin 2 of
Check +12.5V
OK
CN3800 on
the BEHS Board
(BEHS Board)
F4200,IC4200,etc
NG
at F4200 on
the BEHS Board
Check +12.5V_AU1
OK
IC4200,etc
(BEHS Board)
Pin: Low
Check
on the BEHS Board
at pin 29 of IC5000
X_ASW_PROTECT
Pin: High
FE/BE Communication
IC9000,etc
(BEHS Board)
3 times Blinkings
2) 3 times blinkings (DC Alert, Audio Error and Communication Error)
F3700,IC3700,etc
DC_ALERT
NG
Check D+3.3V at
(BEHS Board)
OK
JL3715 or JL3716
on the BEHS Board
(BEHS Board)
F3701,IC3701,etc
NG
the BEHS Board
Check +5V_MAIN
at JL3731 or JL3732 on
OK
AUDIO
Speaker
NG
Check
Speaker Impedance
OK
at SP Connector
KDL-40/52/60LX900,903,904,905(AEP/UK)
TROUBLE SHOOTING
28
4 times Blinkings
PANEL
Between 0.84V to 2.65V
Check
PANEL_FAIL at
(Balancer)
JL2565
BEHS Board
on the BEHS Board
3) 4 times blinkings (Balancer Error)
KDL-40/52/60LX900,903,904,905(AEP/UK)
NG
TROUBLE SHOOTING
Panel (T-con)
29
BEHS Board
OK
change
Panel (T-con)
4) 5 times blinkings (T-con Error)
5 times Blinkings
NG
Check PANEL_VCC
G* Board
at JL3806
on the BEHS Board
about 5V 㧦 22” Model
OK
about 12V : ex. 22” Model
Harness
NG
(a)
harness check
Between G* to Panel
LVDS Harness
NG
(a) exclude 60Hz Panel Model
OK
check
LVDS Harness
OK
KDL-40/52/60LX900,903,904,905(AEP/UK)
TROUBLE SHOOTING
30
6 times Blinkings
BEHS Board
Under 2.65V
Check
JL2565
PANEL_FAIL at
on the BEHS Board
Over 2.65V
Panel (T-con)
to HEM board
between T-con
Change the harness
NG
Change G* Board
OK
Harness
T-con to HEM
OK
G* Board
5) 6 times blinkings (Backlight Error)
KDL-40/52/60LX900,903,904,905(AEP/UK)
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