Sony KDL-40HX800, KDL-46HX803 Schematic

SERVICE MANUAL
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
SERVICE MANUAL
ORIGINAL MANUAL ISSUE DATE: 5/2010
1.0 5/2010 No revisions or updates are applicable at this time.
KDL-40/46HX800,803,805(AEP/UK)
AZ1-LCHASSIS
Segment: 2b-1.5
LCD Digital Color TV
9-888-320-01
SERVICE MANUAL
SERVICE MANUAL
AZ1-LCHASSIS
Segment: 2b-1.5
LCD Digital Color TV
KDL-40/46HX800,803,805(AEP/UK)
9-888-320-01
MODEL LIST
KD L -4 0H X 80 0 Black RM-ED034 AEP KDL-40HX803 Black RM-ED034 UK KDL-40HX805 Black RM-ED034 AEP KD L -4 6H X 800 Black RM-ED034 AEP KDL-46HX803 Black RM-ED034 UK KDL-46HX805 Black RM-ED034 AEP
MODEL COLOR COMMANDER DEST.MODEL COLOR COMMANDER DEST.
KDL-40/46HX800,803,805(AEP/UK) 3
WARNINGS AND CAUTIONS -ENGLISH
CAUTION
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.
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.
CARRYING THE TV
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.
• Correct hand placement while carrying the TV is very important for safety and to avoid damages.
SAFETY-RELATED COMPONENT WARNING!!
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.
KDL-40/46HX800,803,805(AEP/UK) 4
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.
WARNING!!
Afi n d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout dépannage. Le chássis de ce récepteur est directement raccordé à l’alimentation du secteur.
POUR TRANSPORTER LE TÉLÉVISEUR
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.
ALERTE!!
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.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
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.
KDL-40/46HX800,803,805(AEP/UK) 5
WARNINGS AND CAUTIONS
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.
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.
KDL-40/46HX800,803,805(AEP/UK) 6
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 board surface for solder splashes and bridges.
2. Check the interboard wiring to ensure that no wires are “pinched” or touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps, and mounting hardware have been replaced. Be absolutely certain that you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.
6. Check the line cords for cracks and abrasion. Recommend the replacement of any such line cord to the customer.
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-40/46HX800,803,805(AEP/UK) 7
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.
1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the
manufacturers’ instructions to use these instructions.
2. A battery-operated AC milliampmeter. The Data Precision 245 digital multimeter is suitable
for this job.
3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC
voltmeter. The “limit” indication is 0.75 V, so analog meters must have an ac curate low 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).
SAFETY CHECK-OUT
KDL-40/46HX800,803,805(AEP/UK) 8
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 .
STB Y LED
Flash t ime
2 M AIN_POWE M ain Power Over Voltage Protection 3
4 BA LANCER_ Panel Balancer Error 5
6 BA CKLITE_ Back Light Error (Panel Inv erter) 7
8 - Not used
9 - Not used 10 - Not used 11 - Not used 12 - Not used
- RGB_SEN RGB Sensor ACK Error
Serv ice menu I t em n ame
(Screen D isplay )
DC_ALERT DC_ALERT
DTT_WDT DTT Error
AUD_PRO T Audio Abnormal Detec tion
TCON_ERR T-CON Error
HFR_ERR HF R E rr or
P_ID_ERR Panel ID NVM Error
TEMP_ERR Thermal Error
FAN_ERR F AN Error (Not Detected. Display O nly )
D iagnost ic It em Description
KDL-40/46HX800,803,805(AEP/UK) 9
SELF DIAGNOSIS FUNCTION
DISPLAY OF STANDBY LED FLASH COUNT
0.5
0.5
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:
3
KDL-40/46HX800,803,805(AEP/UK) 10
[SELF DIAGNOSTIC SCREEN DISPLAY]
SELFCHECH<1>NEXTPAGEŞ>
Item name
000RGB_SENŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 002MAIN_POWEŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 003DC_ALERTŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 003AUD_PROTŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 003DTT_WDTŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 004BALANCERŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
STBY LED flash time
005HFR_ERRŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 005TCON_ERRŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 005P_ID_ERRŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 006BACKLITEŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 007TEMP_ERRŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 007FAN_ERRŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 010RESERVEDŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00 011RESERVEDŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ ŞŞŞŞŞŞŞŞŞŞ 00
SELF DIAGNOSIS FUNCTION
Error count (00-99)
Error history (Last failure time beforehand)
12345Ş67891Ş23456
Panel operation time by hour (MAX:65535) Boot count (MAX:65535) Total operation time by hour (MAX:65535)
KDL-40/46HX800,803,805(AEP/UK) 11
Error history (Failure time before last) Error history (The last failure time)
SELF DIAGNOSIS FUNCTION
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
1. Error history and Error count : Press the Channel 8 => Channel 0 .
2. Panel operation time : Press the Channel 7 => Channel 0 .
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-40/46HX800,803,805(AEP/UK) 12
SEC 1. DISASSEMBLY
1-1. MOVIE LIST
KDL-40HX800/803/805
KDL-40HX800/803/805
KDL-46HX800/803/805
KDL-46HX800/803/805
KDL-40/46HX800,803,805(AEP/UK) 13
SEC 2. ADJUSTMENT
HOW TO ENTERING 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.
3) Service mode display. Note: First of all, when you enter Service Mode, you can see “Digital” service mode.
Whenever you press “OPTIONS” or “JUMP” on remote, each service mode is changed. “Digital” -> “Chassis” -> “Sub” -> “PEM”
DIGITAL SERVICE
001 OP 000 VERS ---
<MAIN> <SUB> DM1.301J00AA SM1.010W00AA M2.105C SB1.000W00AA DD1.016J00AA SD1.010W00AA (DM1.301J00AA) RF01.05 WP00.521J00AA ID1C117081 ID1C117081 LTY320AB01 PID04020000 WF:2.0.0.99 <BEM> WF:0B BM1.012W00LU Camera FW BB1.000W00LU Camera FW BD1.011J46LUX
---.---------
Item number
Category number
Press “OPTIONS” or “JUMP” button
CHASSIS SERVICE 000 CXD2813R 000 H_DET_NOSIG_CNT 1
Item name Category name
Data
KDL-40/46HX800,803,805(AEP/UK) 14
4) How to use the remote commander.
AD JUSTMENT
Function
<Test>+<TV>/<Display><5><Vol Up><Power>Service mode on
Item up / down
Category up / down
Data up / down
Test reset Read data
Execute
Write data
Change module
The flow of control
<Other> / <Power off + on>Service mode off
<1>/<4> <2>/<5> <3>/<6>
<8> + <Mute> + <0>
<9> + <0>
<10 or 0>
<Mute> + <0>
<Jump> / <Option>
5) After entering service mode, then turn off the power switch.
KDL-40/46HX800,803,805(AEP/UK) 15
WHITE BALANCE ADJUSTMENT
Note: Please execute this adjustment if necessary. Change Data of “PEM” service mode
a. Select “010 WB_GAIN2_A” category by pressing “2 / 5” on remote. b. Select “000” ~ “005” item by pressing “1 / 4” on remote. c. Change data “0 ~ 255” by pressing “3 / 6” on remote. d. Press “0” or “10” to save data.
It shows red “WRITE”. It indicate writing is processing. Writing process is done after a while. (takes about a couple of seconds)
PEM SERVICE 010 WB_GAIN2_A 000
R_DRV 128
AD JUSTMENT
000 R_DRV 128 001 G_DRV 128 002 B_DRV 128 003 R_BKG 128 004 G_BKG 128 005 B_BKG 128---
KDL-40/46HX800,803,805(AEP/UK) 16
SAVE CHANGING DATA
1) Change Data of “Chassis” or “Sub” or “PEM” service mode
2) Write data for “Chassis” or “Sub” or “PEM” service mode a. Press “Mute” on remote.
It shows green “SERVICE” changes to green “WRITE”. 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.
3) TV reboot is necessary for applying data change.
CHASSIS WRITE 000 CXD2813R 000 H_DET_NOSIG_CNT 1
AD JUSTMENT
KDL-40/46HX800,803,805(AEP/UK) 17
CHANGE DATA
Note: “Digital” service mode don’t have to Save. (except “002 MODEL” category)
1) Change Data of “Digital” service mode. (except “003 DIG_SRV_MODE” category)
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.
2) Change Data of “Digital” service mode. ( “003 DIG_SRV_MODE” category)
“003 DIG_SRV_MODE” is one category of “Digital” service mode. Please note because this operation is special.
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”,
when returning on the previous page.
AD JUSTMENT
DIGITAL SERVICE 004 TUNER 000 A_NOSIG_DET 001
DIGITAL SERVICE 003 DIG_SRV_MODE 000 TEST_PATTERN ---
DIGITAL(DIG_SRV_MODE) SERVICE
TEST_PATTERN
*1 Video
2 Audio
KDL-40/46HX800,803,805(AEP/UK) 18
3) Write data for “Digital” service mode. ( “002 MODEL” category) Note: This procedure operation, when replaced the B board. Note: Do not write a wrong segment or destination information in Product ID.
When the wrong setting is written, TV may not operate.
000 SEG ・・・Product ID - segment information 001 DEST・・・Product ID – destination information
a. Change data for each model. b. Press “0” or “enter” on remote.
It shows red “WRITE”. It indicate writing is processing.
c. Writing process is done at this point.
AD JUSTMENT
DIGITAL SERVICE 002 MODEL 000 SEG 01 : 2a-3
Write
KDL-40/46HX800,803,805(AEP/UK) 19
SET TO SHIPPING CONDITION
How to do shipping condition.
a. Move to “Digital” service mode.
Press “8” on remote. It shows green “SERVICE” changes to green “RST-”. Press “mute” on remote. Added green “EXE” after green “RST-”.
d. Press “0” or “enter” on remote. Green “EXE-RST” changes to red “EXE-RST”. It indicate writing is processing.
After a while, red “EXE-RST” changes to green “SERVICE”. And all LED lights. Writing process is done at this point.
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.
AD JUSTMENT
KDL-40/46HX800,803,805(AEP/UK) 20
CHANGE THE EMITTER OUTPUT LEVEL
Note: To reduce the emitter LED output power strength. Change Data of “PEM” service mode
a. Select “009 3D” 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.
0: Strong (Default) 1: Weak
d. Save & Reboot.
AD JUSTMENT
PEM SERVICE 009 3D 001
EMIT_STR
1
KDL-40/46HX800,803,805(AEP/UK) 21
SEC 3. TROUBLE SHOOTING
3-1. TRIAGE CHART
Note: Power board is different in name every inch. Therefore this section displays difference point in "*".
Reference
BAL BOARD G* BOARD HLR BOARD WIFI MODULE LVDS CABLE LCD PANEL
Problem
: doubtful part : Few possibility
Symptoms - Shu tdown. Power LED
blinking red diagnostics sequences
234567
POWER
POWER
DTT
AUDIO
POWER
PANEL
(TCON)
PANEL
(INVERTER)
TEMP
No
Power
No G reen
Power LED
(Dead Set)
Video - missing or distorted
Stationary
colored lines
or dots
No video
one of Inputs
Remote Network Audio
No video
all InputsNoRemote
Wireless
can't
connect
No Audio
KDL-40/46HX800,803,805(AEP/UK) 22
3-2. FLOW CHART
START
TROUBLE SHOOTING
Does the Power Led
stay on when the
TV is switched on ?
Yes
Is the Standby Led
blink ?
Yes
Is the Picture and
Sound OK ?
Yes
Do the buttons
on the TV & Remote
Commander work
properly?
No
No
No
No
See No Power
See Standby LED Blink
See No Picture / No Sound
See TV/ Commander button malfunction
Is the network
connection OK?
Yes
END
No
See Can’t connect network
Yes
KDL-40/46HX800,803,805(AEP/UK) 23
3-3. NO POWER
TROUBLE SHOOTING
No Power
Check STBY 3.3V at 1 pin of CN3800
on the BAL Board
OK
BAL Board
KDL-40/46HX800,803,805(AEP/UK) 24
NG
Replace
Between G* Board to
BAL Board Harness
OK
Harness
NG
G* Board
3-4. STANDBY LED BLINK
1) 2 times blinkings (Main Power Error)
2 times Blinkings
TROUBLE SHOOTING
Check REG12V at
pins 6/7 of
CN3800 on
the BAL Board
12V OK
BAL Board
KDL-40/46HX800,803,805(AEP/UK) 25
12V NG
Replace
Between G* Board to
BAL Board Harness
OK
Harness
NG
G* Board
2) 3 times blinkings (DC Alert, Audio Error and Communication Error)
TROUBLE SHOOTING
3 times Blinkings
Check D+3.3V at
JL3715 or JL3716
on the BAL Board
OK
Check +5V_MAIN
at JL3731 or JL3732 on
the BAL Board
OK
Check
Speaker Impedance
at SP Connector
NG
NG
NG
DC_ALERT
F3700,IC3700,etc
(BAL Board)
F3701,IC3701,etc
(BAL Board)
AUDIO
Speaker
Check +12.5V
at pin 2 of
CN3800 on
the BAL Board
OK
Check +12.5V_AU1
at F4200 on
the BAL Board
OK
Check
X_ASW_PROTECT
at pin 29 of IC5000
on the BAL Board
Pin: High
NG
NG
Pin: Low
AUDIO
G* Board
F4200,IC4200,etc
(BAL Board)
IC4200,etc
(BAL Board)
FE/BE Communication
OK
KDL-40/46HX800,803,805(AEP/UK) 26
IC9000,etc
(BAL Board)
3) 4 times blinkings (Balancer Error)
4 times Blinkings
Check
PANEL_FAIL at
JL2565
on the BAL Board
BAL Board
TROUBLE SHOOTING
Between 0.84V to 2.65V
PANEL
(Balancer)
KDL-40/46HX800,803,805(AEP/UK) 27
4) 5 times blinkings (T-con Error)
5 times Blinkings
TROUBLE SHOOTING
Check PANEL_VCC
at JL3806
on the BAL Board
OK
Between G* to Panel
harness check
(a)
OK
LVDS Harness
check
OK
NG
about 5V : 22” Model about 12V : ex. 22” Model
NG
(a) exclude 60Hz Panel Model
NG
LVDS Harness
G* Board
Harness
Panel (T-con)
change
OK
Panel (T-con)
NG
BAL Board
KDL-40/46HX800,803,805(AEP/UK) 28
TROUBLE SHOOTING
5) 6 times blinkings (Backlight Error)
6 times Blinkings
Check
PANEL_FAIL at
JL2565
on the BAL Board
Over 2.65V
Change G* Board
Under 2.65V
NG
BAL Board
Panel (T-con)
6) 7 times blinkings (Temperature Error)
7 times Blinkings
Setting circumstance
is OK?
Temperature,
Ventilation, etc.
YES
Change BAL Board,
and Aging a few hours
OK
BAL Board
NO
NG
Set to another Location, etc.
Panel
OK
G* Board
KDL-40/46HX800,803,805(AEP/UK) 29
3-5. NO PICTURE
No Picture
TROUBLE SHOOTING
about 5V : 22” Model about 12V : ex. 22” Model
Press HOME Key
XMB (Menu) displayed?
YES
BAL Board
NO
PANEL_VCC
At JL3806 on the
BAL Board
NO
G* Board
YES
BL_ON: not H
Check
BL_ON at JL2566
on the BAL Board
Check Harness
(Between G* Board
to BAL Board)
OK
Change BAL Board G* Board
OK
BAL Board
BL_ON:H
NG
Harness
(G* to BAL)
NG
Replace
the LVDS Harness
OK
Harness (LVDS)
NG
LCD Panel
(T-con)
KDL-40/46HX800,803,805(AEP/UK) 30
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