Sony KD-55XE8505 Service Manual
SERVICE MANUAL
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XE85 Series
ORIGINAL MANUAL ISSUE DATE: 3/2017
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Version Date Subject
1.0 3/2017 Original manual issue.
GN3TR CHASSIS
KH Segment
LCD TV
9-888-821-01
MODEL LIST
MODEL COLOR COMMANDER DEST.
KD-55XE8505 Black RMF-TX300E CEI/UKA
KD-55XE8577 Silver RMF-TX300E UKA/RU3
RMF-TX301E CEI
KD-55XE8588 Black RMF-TX201ES CEI
KD-55XE8596 Black RMF-TX300E CEI/UKA/RU3
KD-55XE8599 Black RMF-TX201ES CEI
KD-65XE8505 Black RMF-TX300E CEI/UKA
KD-65XE8577 Silver RMF-TX300E UKA/RU3
RMF-TX301E CEI
KD-65XE8588 Black RMF-TX201ES CEI
KD-65XE8596 Black RMF-TX300E CEI/UKA/RU3
KD-65XE8599 Black RMF-TX201ES CEI
FW-65XE8501 Black RMF-TX300E CEI/UKA
RMT-TX210E
MODEL COLOR COMMANDER DEST.
KD-75XE8596 Black RMF-TX300E CEI/UKA/RU3
FW-75XE8501 Black RMF-TX300E CEI/UKA
RMT-TX210E
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
2
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.
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• 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.
CAUTION ABOUT THE LITHIUM BATTERY
• Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type.
• Outer case broken battery should not contact to water.
IMPORTANT REMINDER FOR TV MAINBOARD REPLACEMENT
It is mandatory for service centers to confirm the TV's system information after each repair carried out with Mainboard replacement.
Whenever a TV Mainboard is replaced, the correct TV Model and Serial number must be reinserted into memory.
This is a MANDATORY procedure that each service center must apply.
Please refer to the chapter of ADJUSTMENT in this service manual to find out how to set the model number and serial number in service mode.
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3
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.
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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.
WARNINGS AND CAUTIONS
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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.
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Leakage Test
(To protect electric shock when customer touch the terminal.)
Leakage current can be measured by V: Voltmeter or oscilloscope (r.m.s. or peak reading)
Stabilized power supply instrument and isolated voltage transformer:
Use too much current capacity and isolated voltage transformer does not need to use stabilized power supply
equipment
Specification of RMS volt meter: Input resistance > 1 Mohm, Input capacitance < 200 pF,
Frequency range: 15 Hz – 1MHz (Refer Figure A). Isolated type volt -meter (FLUKE 8921A etc *1)
*1 Not use FLUKE 8920A that connected to protective earth by diode
# Leakage current of measurement instrument is less than 10μArms when under test equipment AC plug is
opened
# Set up the following condition and turn on the set.
Applied voltage: Nominal input voltage (Description on Nameplate)
# Measure the leakage current between one phase conductor and neutral for terminal A and terminal B.
Read rms value, and then calculate to peak value PEAK VALUE =√2 RMS VALUE
Comply with the following requirement
Class II equipment (2-pin plug):
for each terminal, the worst value of measurement must not exceed AC 350uA peak).
Note: including AC adaptor, AC adaptor/DC operated unit combination
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
Figure A. Measuring network for Leakage Current
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SELF DIAGNOSIS FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the Smart Core Red 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 Smart Core Red 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 Smart Core Red 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 .
RED LED blinking count Detection Items
2x
3x
4x
5x
6x
7x
8x
<B/G> Main 12V over voltage [MAIN_POWER]
<B/G> Main 5.0V failure [DC_ALERT]
<B/S/G> Audio amp. protection [AUD_ERR]
None
<P/T/G/B> Panel ID EEPROM I2C No ACK (Also panel power failure is a suspect) [P_ID_ERR]
<G/P/B/LD> Backlight failure [BACKLIGHT]
Over temperature protection [TEMP_ERR]
<B/P> Temp. sensor I2C No ACK [TEMP_ERR]
<B> 4KPQ Error (4KPQ WDT)
<G>: Power supply board, <B>: Main board, <T>: T-con board, <LD> LD board,
<P>: Panel module, <S>: Speaker, <Tu>: Tuner board
The following items will be recorded and displayed on screen although they do not carry out the RED LED blinking count.
Record Only Item Detection Items
TU_DEMOD
TCON_ERR <T> T-CON device I2C communication failure
FRCTC_I2C
AUD_ERR_I2C <B> Audio amp I2C communication failure
4KPQ_ERR_I2C
Blue italic: detect at startup sequence only.
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<B/Tu> Tuner & Demodulator I2C communication failure
Tuner board set detect signal monitoring
<B> FRC device is not finished Initial sequence
FRC device I2C communication failure
<B> 4KPQ device I2C communication failure
8
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SELF DIAGNOSIS FUNCTION
[SELF DIAGNOSTIC SCREEN DISPLAY]
Format of error timestamps
YYMMDDhh mmss (in UTC)
Example :
120823132523 -> Aug 23 2012 13:25:23 UTC
* On ly whe n time is set, an err or times tam p is s ave d.
Smart Core Red LED blinking count
• Panel Ope rat ion Ti me is recorded ever y 30 min,
but Total Operation Ti me is recorded eve ry 1 h r .
Ther efo re, the panel op. time might bec ome l arg er t han th e total op. tim e.
Total Operation Time [hr] – Boot Count – Panel Operation Time [hr]
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:
In standby mode, press buttons on the remote commander sequentially in rapid
succession as shown below:
Error Item
SELF CHECK
Back
<<
002 MAIN POWER 000000000000 000000000000 000000000000 000
003 DC ALERT 000000000000 000000000000 000000000000 000
003 AUD ERR 150101000018 150101000018 150101000018 003
003 AUD ERR I2C 000000000000 000000000000 000000000000 000
003 TU DEMOD 150101000218 150101000223 150101000105 003
004 LD ERR 000000000000 000000000000 000000000000 000
004 BCM ERR 000000000000 000000000000 000000000000 000
005 TCON ERR 150101000504 000000000000 000000000000 001
005 P ID ERR 000000000000 000000000000 000000000000 000
005 FRCTC I2C 000000000000 000000000000 000000000000 000
006 BACKLIGHT ERR 000000000000 000000000000 000000000000 000
007 TEMP ERR 150101000200 150101000002 000000000000 002
008 4KPQ ERR 000000000000 000000000000 000000000000 000
008 4KPQ ERR I2C 000000000000 000000000000 000000000000 000
00005 00414 00002
[Home]Exit
Error
timestamp
for last
recorded
error
Error
timestamp
for 2nd last
recorded
error
Error count
Error
timestamp
for 3rd last
recorded
error
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”.
Panel Operation Time clear : Press the Channel 7 => Channel 0 .
Timestamps and Error Count clear : Press the Channel 8 => Channel 0 .
Total Operation Time and Boot Count clear: Press the Channel 9 => Channel 0 .
To exit the Self Diagnostic screen...
*If you want to finish service mode app, do AC OFF/ON → Service mode app is disabled perfectly
*if you want to move home menu, push <HOME>button → Service mode app do background(not disable perfectly)
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ADJUSTMENT
HOW TO ENTERING SERVICE MODE
1) Turn on the main power switch to place the set in standby condition.
2) Press the buttons on the remote commander as follows, and entering service mode.
3) Service mode display.
Service Mode
Model Information
Self diagnosis History
Video / Audio
Panel / PQ
General Setting
Tuner
Wi-Fi / BT
>>
>>
>>
>>
>>
>>
>>
>> SDB Service Menu
4) How to use the remote commander.
Function The flow of control
Service mode on <Display or i+ (in fo)> <5> <Vol. Up> <Power>
Close S ervice men u <Home>
Service mode off AC plu g OFF
Item up / down <↑>/ <↓ >
Item select left/right
Execute <Enter>
*When finished the operation of service mode, please AC Plug OFF/ON the TV set.
If you don’t do AC plug OFF/ON, remain the Service Mode App and User can see the Service Mode after RC ON.
(Refer the previous page.)
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[Home]Exit
<←>/<→>
10
SOFTWARE VERSION
1) In Service Mode, select “Model Information”, press “Enter” or “→” button to enter Status Information.
ADJUSTMENT
Model Information
Self diagnosis History
Video / Audio
Panel / PQ
General Setting
Tuner
Wi-Fi / BT
Service Mode
>>
>>
>>
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>>
>>
>>
>>
>> SDB Service Menu
[</>] Set [Home]Exit
2) Press “Enter” or “BACK” button to return to Service Mode.
Service Mode
Model Information
Self diagnosis History
Video / Audio
Panel / PQ
General Setting
Tuner
Wi-Fi / BT
>>
>>
>>
>>
>>
>>
>>
>> SDB Service Menu
Model
Status Information
Model Information
Model Number Setting
SERIAL NUMBER EDIT
>>
>>
>>
[</>] Set [Home]Exit
Main Micro
SW Version:
NVM Version:
Boot Version:
PQ Version:
AQ Version:
<ex>
exFRC:
CameraVID:
CameraPIC:
CameraFW:
<4k BE>
MLFW:
MAFW:
ADSP:
NDAT:
PDAT:
BDAT:
BCM:
FDAT:
UDAT:
BDIX:
PKG1.1.0.03.26.1.00.0
0043 CEI
V1.00000000
02000001
AQ2.5030
00.00.00.00
0
0
0
SF0.114
SF2.550
SF0.201
SD2.550
SP2.550
SD2.550
SF------SD0.001
SD0.000
SD2.550
[</>] Set [Home]Exit
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ADJUSTMENT
SERIAL NUMBER EDIT (1)
This step is MANDATORY after Main board replacement.
1) In “Service Mode”, select “Model Information” by pressing “↑” or “↓” button then pressing “Enter” or
“→” button to enter inside.
2) Select “Serial Number Edit” by pressing “↑” or “↓” button then pressing “→” button.
3) Press “↑” or “↓” button to input numbers.
4) After user input data, press <Enter> .
• Pop-up dialog appear to confirm input data correct
• Serial Number can be set ONLY ONCE
5) Press “→” or “←” button to select YES or NO.
Select YES if input data is correct.
Select NO if input data is incorrect.
Press <Enter> to save answer.
Model Information
Self diagnosis History
Video / Audio
Panel / PQ
General Setting
Tuner
Wi-Fi / BT
Status Information
Model Information
Model Number Setting
Serial Number Edit
Service Mode
>>
>>
>>
>>
>>
>>
>>
>> SDB Service Menu
[</>] Set [Home]Exit
Model
>>
>>
>>
_ _ _ _ _ _ _
[</>] Set [Home]Exit
* The font color of YES/NO is change to black when it is selected.
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
Model
Status Information
Model Information
Model Number Setting
Serial Number Edit 9 9 9 9 9 9 9
>>
>>
>>
Input Data correct?
Yes
No
[</>] Set [Home]Exit
12
ADJUSTMENT
SERIAL NUMBER EDIT (2)
This step is MANDATORY after Main board replacement.
If YES is selected, the input data is saved into EEPROM.
SERIAL NUMBER EDIT is grayed out and the serial number that has been input is displayed.
Operator will not able to edit anymore.
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If NO is selected, the input data is not saved into EEPROM.
The serial number that has been input is displayed.
Operator can still edit the Serial Number.
Model
Status Information
Model Information
Model Number Setting
Serial Number Edit 9999999
Model
Status Information
Model Information
Model Number Setting
Serial Number Edit 9 9 9 9 9 9 9
>>
>>
>>
[</>] Set [Home]Exit
>>
>>
>>
Input Data correct?
Yes
No
>>
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
[</>] Set [Home]Exit
*The font color of YES/NO is change to black when it is selected.
>>
13
ADJUSTMENT
MODEL NUMBER SETTING
This step is MANDATORY after Main board replacement.
1) In “Service Mode”, select “Model Information” by pressing “↑” or “↓” button then pressing “Enter” or “→” button to enter inside.
2) Select “Model Number Setting” by pressing “↑” or “↓” button then pressing “Enter” or “→” button.
3) Press “↑” or “↓” button to scroll Product Name Candidate.
Service Mode
Model Information
Self diagnosis History
Video / Audio
Panel / PQ
General Setting
Tuner
Wi-Fi / BT
>>
>>
>>
>>
>>
>>
>>
>> SDB Service Menu
Status Information
Model Information
Model Number Setting
SERIAL NUMBER EDIT
Model
>>
>>
>>
[</>] Set [Home]Exit
[</>] Set [Home]Exit
4) Select one Product Name from the list. After that select “[OK]” and press “Enter” button.
[MODEL_NUMBER_SETTING]
_ _ _ _ _ _ _ _ _ _ _ _
OK
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ADJUSTMENT
WB ADJUSTMENT (If necessary)
In “Panel/PQ” service mode.
a. Go to “WB Adjustment” category by “↑” or “↓”.
Model Information
Self diagnosis History
Video / Audio
Panel / PQ
Tuner
Wi-Fi / BT
SDB Service Menu
Service Mode
>>
>>
>>
>>
>> General Setting
>>
>>
>>
[</>] Set [Home]Exit
b. To select “WB Adjustment”, press “→” button.
Panel / PQ
Back
WB Adjustment
WB/Mura/CUC data transfer
<<
>>
>>
c. To change data, press “←” or “→” button on remote commander.
Back
R WB Gain
<<
<[ 0 ]>
<[ 0 ]> G WB Gain
<[ 0 ]> B WB Gain
<[ 0 ]> R WB Offset
<[ 0 ]> G WB Offset
<[ 0 ]> B WB Offset
[</>] Set [Home]Exit
[</>] Set [Home]Exit
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ADJUSTMENT
WB/MURA/CUC DATA TRANSFER
(Please apply Main board or panel is replaced.)
1. In “Panel/PQ” service mode.
a. Go to “WB/Mura/CUC data transfer” category by “↑” or “↓”.
Model Information
Self diagnosis History
Video / Audio
Panel / PQ
Tuner
Wi-Fi / BT
SDB Service Menu
Service Mode
>>
>>
>>
>>
>> General Setting
>>
>>
>>
[</>] Set [Home]Exit
b. To select “WB/Mura/CUC data transfer”, press “→” button.
c. To change data, press “←” or “→” button on remote commander.
2. In “WB/Mura/CUC data transfer”.
a. Select “WB/Gamma data transfer” by pressing “↑” or “↓” button on remote commander.
b. To change the items, press “←” or “→” button on remote commander and press “Enter”
button.
Selectable items are:
0. SoC to T-con
1. T-con to SoC
2. No action
c. Similarly, to select the items in Mura and CUC data.
d. Select “[start]” and press “Enter” button to start transfer.
Back
WB / Gamma data transfer
Mura data transfer
Start
<<
<[ 0.Soc to T-con ]>
<[ 0.Soc to T-con ]>
<[ 0.Soc to T-con ]> CUC data transfer
Panel / PQ
Back
WB Adjustment
WB/Mura/CUC data transfer
<<
>>
>>
[</>] Set [Home]Exit
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
[</>] Set [Home]Exit
*Please refer to another manual “Service Procedure for Panel, Board and Software Change /
Upgrade(P/N:98881800x)” for details. GN3TR chassis is the same as GN1T chassis basically.
WB/
Gamma
Mura
CUC
B-board
replace
1.T-con to
SoC
1.T-con to
SoC
1.T-con to
SoC
T-con
replace
0.SoC to
T-con
0.SoC to
T-con
0.SoC to
T-con
Panel
replace
0.SoC to
T-con
1.T-con
to SoC
1.T-con
to SoC
16
HDD PERFORMANCE CHECK
ADJUSTMENT
1. In “Service Mode”, select “General Setting” by pressing “↑” or “↓” button then
pressing “Enter” or “→” button to enter inside.
Model Information
Self diagnosis History
Video / Audio
Panel / PQ
Tuner
Wi-Fi / BT
SDB Service Menu
Service Mode
>>
>>
>>
>>
>> General Setting
>>
>>
>>
[</>] Set [Home]Exit
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2. Select “HDD Performance check ” by pressing “↑” or “↓” button then pressing
“Enter” or “→” button to enter inside.
General Setting
Back
Aging mode
Ship Confirm
HDD Performance Ch
Update CI+ Credent
ECS_Enable
SCART RGB VREF
<<
<[ Off ]>
>>
>>
>> AAA
>>
<[ Off ]>
<[ Auto ]>
3. A message "Please wait" is displayed during performance check processing.
HDD Performance Check
Please wait…
[</>] Set [Home]Exit
4. Result OK or NG will be displayed after performance of HDD is checked.
HDD Performance Check
<[ ]>
Result
Back
<[ NG ]>
<<
[</>] Set [Home]Exit
[</>] Set [Home]Exit
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17
HDD RE-REGISTRATION
1. In “Service Mode”, select “General Setting” by pressing “↑” or “↓” button then pressing “Enter” or “→” button to enter inside.
2. Select “AAA” by pressing “↑” or “↓” button then pressing “Enter” or “→” button to enter inside.
ADJUSTMENT
Model Information
Self diagnosis History
Video / Audio
Panel / PQ
Tuner
Wi-Fi / BT
SDB Service Menu
Service Mode
>>
>>
>>
>>
>> General Setting
>>
>>
>>
General Setting
Back
Aging mode
Ship Confirm
HDD Performance Ch
Update CI+ Credent
ECS_Enable
SCART RGB VREF
[</>] Set [Home]Exit
3. Result OK or NG will be displayed after HDD re-registration is succeed/failed.
HDD Re-Register
Result
Back
<[ NG ]>
<<
<<
<[ Off ]>
>>
>>
>> AAA
>>
<[ Off ]>
<[ Auto ]>
[</>] Set [Home]Exit
[</>] Set [Home]Exit
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18
USB UPDATE
*Please refer to another manual “Service Procedure for Panel, Board
and Software Change / Upgrade(P/N:98881800x)” for details.
GN3TR chassis is the same as GN1T chassis basically.
1:Download USB image and unzip file.
2: copy unzipped file to USB memory root folder.
3: Insert USB memory into USB port on TV.
4-a:USB image is newer soft version.
Automatically show message and start update.
Please follow directions.
System software update
SI2C013500 - 1/5/2022 12:13 PM
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19
TROUBLE SHOOTING
Remote
Bluetooth (BT)
TU_
DEM
OD
TCON
_ERR
FRCTC
_I2C
AUD_
4KPQ_
No White Power
LED & does not
remote (Dead
Stationary
dots
No video
No video
all Inputs
No Remote
Smart Core no LED
Power
Power
(Backlight)
TEMP
4KPQ
Audio
TRIAGE
1. Confirm the symptom from the customer.
2. Select that symptom from the chart.
3. Bring all the boards and cables 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
BLUE TRIANGLE: Secondary possible defective part
BLACK TEXT: Board that may correct the symptom
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
Reference
2 3 4 5 6 7 8
B* Board
G* Board
H* Board
Speaker
Tuner board
Wifi & BT
Module
V By One FFC
Tcon
LCD Panel
Problem
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
p l
l p
p p l l p p l l l p p l l l p p l p p
p l
p
p
l
p l p
LD
BCM
Panel
(Communication)
Panel
Symptoms - no shutdown
Error log record only
ERR_
l
p
l
I2C
ERR_
I2C
No
Power
respond to
Set)
l
p
Video
- missing or distorted
colored
One of
lines or
Inputs
p l
p
p
l
NO RF
input
Network Audio Smart Core
Wireless
can't connect
p
p
p
l
l
No Audio
p
l
(Set is still alive)
l
Bluetooth /
Voice Remote
can't connect
l
20
FLOW
1-1. NO POWER
WITH G* BOARD
No Power
TROUBLE SHOOTING
SI2C013500 - 1/5/2022 12:13 PM
Check STBY 3.3V
C518
near CN400
on B* board
OK
B* board
NG
Replace
Between G* board to
B* board Harness
OK
Harness
u-Com Failure
DDCON/LDO
Main Device Failure
NG
G* board
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
21
FLOW
1-2. NO POWER U-COM FAILURE
START
TROUBLE SHOOTING
Check VDD
C506 Voltage.
Is the voltage >3.0V?
yes
(only for AC-ADP model)
Check TYPE_DET
C503 Voltage.
Is the voltage 0V?
yes
(only for G-board model)
Check TYPE_DET
C503 Voltage.
Is the voltage 2.6±0.2V?
yes
Check OPWRSB
R443 Voltage.
Is the voltage 0V?
yes
Check POWER_ON
R526 or P-on ucom #pin10
Is the voltage >3.0V?
yes
no
no
no
no
no
Check +3.3V_STBY LIne (C521, CN400 #14pin)
And (only for AC-ADP model)
3.3V_DDCON (IC403)
Type Detection Circuit problem.
Check TYPE_DET Line (R521, R522, R523).
Check Power supply harness (CN400 #9pin,10pin).
Type Detection Circuit problem.
Check TYPE_DET Line (R521, R522, R523).
Check Power supply harness (CN400 #9pin,10pin).
SOC
Muffin 2
problem
Try AC Off and On after few minutes.
If #pin19 keep Low, change IC401.
If #pin19 goes High few seconds and downs to Low,
Check +12V_MAIN Line (G board or JK board).
Check 12V_MON
R446 Voltage.
Is the voltage >2.6V?
yes
(only for AC-ADP model)
Check DC_MON
R439 Voltage.
Is the voltage >1.8V?
yes
Check DC_OFF_DET
R448 or P-on ucom #pin3
is >3.0V?
yes
Check P_ON_#1
CL418 or P-on ucom #pin12
is >3.0V?
yes
Check PGOOD_1
R440 Voltage.
Is the voltage >3.0V?
yes
no
no
no
no
no
Check +12V_MAIN Line
(G board or JK board).
Check POWER_MAIN Line
(JK board).
Change IC401
Change IC401
No POWER - DDCON/LDO
Check 1.0V DDCON (IC604)
And (only for AC-ADP model)
12V DDCON (IC9000 on JK).
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
Continue next page
22
FLOW
1-2. NO POWER U-COM FAILURE
Previous page
SI2C013500 - 1/5/2022 12:13 PM
Check P_ON_#2
CL417 or P-on ucom #pin13
is >3.0V?
yes
no
Change IC401
TROUBLE SHOOTING
Check P_ON_HL
CL414 or P-on ucom #pin18
is >3.0V?
yes
Check ORESETB
CL416 or P-on ucom #pin14
Is the voltage >3.0V?
yes
Check X_SYSTEM_RST
CL412 or P-on ucom #pin20
Is the voltage >3.0V?
yes
If X_BL_MUTE (R441) is >3.0V
Check BL_ON
R527 or P-on ucom #pin7
Is the voltage >3.0V?
yes
no
Change IC401
no
Change IC401
no
Change IC401
no
Change IC401
END
Ucom IC401 is working OK
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
23
FLOW
1-3. NO POWER DDCON/LDO
DDCON CHECK
START
TROUBLE SHOOTING
Check IC402 Vcc voltage
Is voltage >12V?
Check Vcc voltage
Is voltage >4V?
Is IC600 mounted?
no
Check Enable
IC600 #pin1
Is voltage >2.5V?
Change DDCON
C423
C602
IC601
yes
yes
yes
yes
no
no
no
Check Vcc voltage
C602
Is voltage >3V?
yes
no
Check
D600
Is diode alive?
yes
Check
D601
Is diode alive?
yes
no
Change D600
Check +3.3V_STBY.
G* board or IC403
no
Change D601
Check +5V_MAIN DDCON (IC402)
Change IC600
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
IC Ref Voltage supply
IC601 +1.5V_DDR
24
FLOW
1-3. NO POWER DDCON/LDO
TROUBLE SHOOTING
DDCONs CHECK
START
Check fuse
F4xx or F6xx
Is fuse OK?
yes
Check Vcc voltage
C4xx or C6xx
Is voltage >12.0V?
yes
Check Enable pin
voltage
Is voltage >2.5V?
SI2C013500 - 1/5/2022 12:13 PM
yes
Change DDCON IC
no
no
no
Change Fuse
1) Check POWER_ON P-on ucom #pin10
(Refer to No Power U-Com Failure)
2) Check G* board
3) Check IC9000 on JK* (only AC-ADP Models)
No Power U-Com Failure
or
Enable source
LDOs CHECK
START
Check Vcc voltage
C6xx
Is voltage >3V?
yes
Check Enable pin
voltage
Is voltage >3V?
yes
Change LDO IC
no
no
Check +3.3V_DDC_OUT
DDCON (IC403)
or
+3.3V_STBY (G* board)
No Power U-Com Failure
or
Enable source
IC Ref Voltage supply
IC402 +5.0V_VBUS/+5V_MAIN
IC403
IC405 +1.8V_TU/+1.8V_BE
IC404 +1.0V_BE
IC409 +1.5V_FRC
IC410 +0.95V_FRC
IC604 +1.0V_M2
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
+3.3V_STBY (AC-ADP only)
/+3.3V_MAIN
IC Ref Voltage supply
IC602 +1.05V_M2_STBY
IC603 +1.05V_M2_A_1
IC605 +1.05V_M2_ST_ET
IC606 +1.05V_M2_A_2
IC607 VCC3IO_EMMC (1.8V)
25
FLOW
2-1. LED BLINKING 2X (MAIN POWER ERROR)
LED 2x blinking
TROUBLE SHOOTING
Check “+12V_MAIN”
at pin 11/13 of CN400
on B* board,
Voltage > 13.2V ?
No
BMKS / BMKP board
Yes
G board
JK board
AC Adaptor
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
26
FLOW
2-2. LED BLINKING 3X (DC ALERT AND AUDIO ERROR)
TROUBLE SHOOTING
DC_ALERT
3-times blinking
(DC Alert)
Check “POWER_MAIN”
at pin 17/19 of CN400
on B* board,
Voltage = 18.0～20.0V or
22.5～24.5V ?
NG
G board
JK board
AC Adaptor
OK
Check “+5.0V_VBUS”
at C431 on B* board
4.959V<Voltage<5.285V?
NG
BMKS / BMKP board
OK
Other flows
AUDIO ERROR
3-times blinking
(Audio Error)
Go to No Sound (Power Off Check)
Go to No Sound (Power On Check)
Power Off Check
Power On Check
Replace
G board or JK board
or AC Adaptor
NG
Measure the Speaker
impedance by multi-meter
Less than 3Ω ?
No
OK
Yes
G or JK board
or AC Adaptor
Replace
Speaker
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
Speaker Harness
27
FLOW
2-3. LED BLINKING 5X (PANEL ID READ ERROR)
5-times blinking
TROUBLE SHOOTING
Check
“+12.5V_TCON”
at C400 on BMKS
OK
Replace the Harness
Between G/JK board
and BMKS
NG
Replace
the V-By-One FFC
NG
Replace
BMKS board
NG
NG
Symptom improve
Symptom improve
Symptom improve
Replace
G/JK board
NG
OK
G/JK board
Harness
V-By-One FFC
is suspicious
BMKS board
Replace
Panel (T-con)
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
Symptom improve
G/LD Board: G board or LD board
Panel (T-Con)
28
SI2C013500 - 1/5/2022 12:13 PM
FLOW
2-4. LED BLINKING 6X (BACKLIGHT ERROR)
6-times blinking
Check Voltage of
“BL_LD_ERR_DET”
at CL1038 on BMKS
Voltage ≥ 1.9 V
harness/connection
G/LD board to BMKS
Check
Harness /
Connection
broken
Replace
harness
No
improvement
Symptom
Improvement
TROUBLE SHOOTING
Harness
Voltage < 1.9 V
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
Harness /
Connection OK
LED driver or G board
Replace LD board or G board.
No
improvement
Replace
BMKS
No
Improvement
Replace
Panel
Symptom
Improvement
Symptom
Improvement
Symptom
Improvement
G/LD Board: G board or LD board
LD board/G board
BMKS Board
Panel
29
FLOW
2-5. LED BLINKING 7X (TEMPERATURE ERROR)
TROUBLE SHOOTING
2-6. LED BLINKING 8X (4KPQ ERROR)
7-times blinking
Ambient conditions
(temperature , ventilation, etc.)
are OK?
Yes
Replace BMKS/BMKP
board, and Aging a few
hours
Symptom
improvement
BMKS/BMKP board
No
NG
Set to another
location, etc.
Panel
8-times blinking
Replace
BMKS board
Symptom
Improvement
BMKS board
No
improvement
Other flows
KD-55/65/75XE8505,8577,8588,8596,8599,FW-65/75XE8501
30
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