Sony KD-43X7 H Series User manual

SERVICE MANUAL (COMMON)
GN6VU CHASSIS
Segment: NR
9-888-781-03
LCD TV
Sony EMCS (M) Sdn. Bhd., SVPM
©2020.12
(See next page for revision )
ORIGINAL MANUAL ISSUE DATE: 2020.03
Conditions of Use:
(1) Please use this information only for the purpose of performing repair, maintenance and/or configuration services of the Sony products
(hereinafter the “Repair services”) under the service agreement entered into with the Sony group company (hereinafter the “Service
agreement”).Using this information for any purpose other than the purpose described foregoing is forbidden.
(2) Only the Authorized Servicer’s officers, employees or subcontractors (including their officers and employees) whose duties justify aneed-to-
know and who have agreed to hold confidential this information (collectively hereinafter the ”Permitted users”) are permitted to access and
use this information.To disclose or disseminate to any person other than the Permitted users is forbidden.
(3) Destroy or erase any and all portion of this information promptly in an irrecoverable and secure fashion after achieving the purpose
described in Section (1) above.
(4) Do not copy, replicate, reproduce, alter, translate, transmit, sell, lease, or distribute this information in whole or in part without the prior
written permission of the author.
(Notwithstanding foregoing, it is permitted to copy and distribute this information to the Permitted users.)
(5) Please notify immediately any leakage, loss, theft, misappropriation, or other misuse of this information by e-mail to the following address:
[e-mail]
(6) In addition to the above, the terms and conditions of the Service agreement shall be applied to using this information.
Revision of Information:
This information may be changed or updated at any time without any prior notice.Please confirm that this information is up-to-date before
using it.
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Version Date Subject
12020.03 1st Issue
22020.06 1. Update Factory Data Reset information (pg. 125 -127).
2. Update Board naming (pg. 15 & 16).
3. Update Footer information of each page.
32020.12 Add Clearing Serial Number on Mainboard (pg. 110, 112)
REVISION HISTORY
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THIS SERVICE MANUAL CONTAINS COMMONINFORMATION FOR BELOW REGIONS AND MODELS:
REGION
ASIA AMERICA
MODEL LISTS
MODEL
KD-43X7*H KD-49X7*H KD-55X7*H KD-65X7*H KD-75X7*H
KD-55X7*CH KD-65X7*CH KD-75X7*CH
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Note: Pictures provided in this manual may have difference from actual sets
Please refer Service Manual –Unique for below
information :
Disassembly and Removal Caution
Wire Dressing
Circuit Board Location
Exploded Views and Part Lists
Title Page
SECTION
1 : SAFETY NOTES 5
SECTION
2 : SELF DIAGNOSTIC FUNCTION 13
SECTION
3 : TROUBLE SHOOTING 15
SECTION
4 : SERVICE ADJUSMENT 106
SECTION
5 : DIAGRAMS 118
SECTION
6 : PANEL HANDLING 119
SECTION
7 : FACTORY DATA RESET 125
TABLE OF CONTENTS
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1-1. WarningsandCaution
1)CAUTION :These servicing instructions are for use by qualified
service personnel only.
2)To reduce the risk of electric shock, do notperformany servicing other
than that contained in the operatinginstructionsunless you are qualified to
do so.
3)WARNING!!:An isolation transformer should be used duringany
service to avoidpossible shock hazard, because of live chassis. The
chassis of this receiver is directly connected to the ac power line.
The replaceable fuse could be in the neutral of the mains supply. When
replacing the fuse, the mains shall be disconnected for de-energize the
phase conductors.
(*Except AC ADAPTOR, Because it doesnot carry out replacing an
internal fuse.)
4) CARRYING THE TV : Be sure to follow these guidelines to protect
your propertyand avoid causing seriousinjury :
•Carry the TV with an adequate number of people; larger size TVs
require two or more people.
•Correct handplacement while carrying the TV is very important
for safety and to avoiddamages.
5) SAFETY-RELATED COMPONENT WARNING!! : Components
identified by shadingand ! mark on the 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 improperoperation is
suspected.
6) IMPORTANT REMINDER FOR TV MAINBOARD REPLACEMENT :
It is mandatory for service centers to confirm the TV‘s system information
after each repair carriedout with Mainboard replacement.
SECTION 1
SAFETY NOTES
5
Whenever a TV Mainboard is replaced, the correct TV ModelandSerial
number must be reinserted into memory.
This is a MANDATORY procedure thateach service center must apply.
Please refer to the chapter of ADJUSTMENT in this service manual to find
outhow to set the modelnumberand serialnumber in service mode.
1-2-1. Caution Handling of LCDPanel
When repairing the LCDPanel, make sure you are grounded with a wrist
band.
When repairing the LCDPanel on the wall, the panel must be secured
using the 4 mountingholes on the rear cover.
1) Do not press 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 temperature or in areas of high humidity
for an extended period of time.
4) Do not expose the LCDpanel to direct sunlight.
5) Avoid contact with water. It may cause short circuit within the module.
6) Disconnect the AC power when replacing the backlight (CCFL)or
inverter circuit. (High voltage occurs at the inverter circuitat650Vrms)
7) Always clean the LCDpanel with a soft cloth material.
8) Use care when handling the wires or connectors of the inverter circuit.
Damaging the wires may cause ashort circuit.
9) Protect the panel from ESD to avoid damaging the electronic circuit
(C-MOS).
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10)During the repair, DO NOT leave the Power On or Burn-in period for
more than 1 hour while the TV is face down on a cloth. Refer Figure 1
6
Figure 1.
1-2-2. Caution for OLEDPanel
1) Handling
When repairing the TV set, be sure you are grounded by using a wrist band.
*Do not press on the panel or frameedge to avoid the risk of electric shock.
*Do not scratch or press on the panel with any sharp objects.
*Do notleave the module in high temperaturesor in areas of high humidity
foran extendedperiod of time.
*Do not expose the panel to direct sunlight.
*Avoid contactwith water. It may cause a short circuit within the module.
*Disconnect the AC power when replacing.
*Always clean the panel with a softcloth material.
*Use care whenhandling the wires or connectors.Damaging the wires may
cause a short.
*Protectthe panel fromESD to avoiddamaging the electronic circuit.
*Do not recommendpower-on in the conditions which laid face down the
panel, in repair activity. Refer Figure 1.
*Whentransportingby hand, do notput stress on the panel and the frame
around the screen.
Refer to the panel handling chapter of each Service manual,
or the "Transporting"information of the Reference Guide of each model for how
to hold it.
2) OLEDScreen
•Although the OLED screen is made with high-precision technology and
99.99% or more of the pixels are effective,black dots may appear or bright
points of light (white, red,blue, or green) may appear constantly on the OLED
screen. This is a structural propertyof the OLED screenand is nota
malfunction.
•Do notpush or scratch the frontfilter,or place objects on top of this TV set.
The image may be uneven or the OLED screen may be damaged.
•The screenand cabinet get warm when this TV set is in use. This is nota
malfunction.
3) Precautionsto Protect the Screenfrom Damage
Image retention
OLED TV’s are susceptible to image retention (burn-in)due to the
characteristicsof the materials used. Image retentionmay occur if images are
displayed in the same location on the screen repeatedly or over extended
periods of time. This is not a malfunction of the TV. Avoid displaying images
that may cause image retention.
The following are examples of images that may cause image
retention:
•Content with black bars either on the top andbottomand/or the leftand right
sides of the screen. (for example,Letterboxed,4:3 screen, Standard definition)
•Static images such as photos.
•Video games that might have static content in some part of the screen.
•On-screen menus, program guides, channel logos etc.
•Static content fromapplications.
•On-screen tickers,such as those used fornews and headlines.
SECTION 1
SAFETY NOTES
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7
To reduce the risk of image retention:
•Fill the screen by changing [Wide mode] to eliminate the black bars.
Select [Wide mode] other than [Normal].
•Turn off the OSD (On ScreenDisplay) by pressing the DISPLAYbutton,
and turn offthe menus fromconnected equipment.Fordetails, referto
the instruction manuals for the connected equipment.
•Avoid displaying static images with bright colours (including white),
clocks or logos on anyportion of the screen.
•Set the picture settings based on the ambient conditions. The Standard
Picture is recommended for home use and when viewing content that
oftendisplays the station logos, etc.
The TV has following featuresto help reduce/ prevent image retention.
Press the HOME button, then select [Settings] – [Picture & Display] –
[Expert panel settings]– the desired option.
Other feature
The screen brightness is automatically reduced when displaying still
images, clocks, bright colours or logos etc.
IMPORTANT REMINDER FOR OLED PANEL REPLACEMENT
When carryingout OLEDpanel replacement,it is mandatory of a
service center to confirmand record Panel ON time & Panel
Refresh times.
It is because they are indispensableinformation in order to clarify
responsibility for image retention after panel replacement.
Please referto the chapter of SELF DIAGNOSIS FUNCTION in this
service manual to find outhow to confirmthe Panel ON time &
Panel Refreshtimes in service mode.
Panel refresh
Panel refresh will automatically run to adjust the uniformityof the TV
screen afterit hasbeen in use for long periods of time.
Panel refreshcan also be performedmanuallyand should only be used if
image retentionis very noticeable or you see the following message:
[Panel refreshdid not finish...]
Caution:
•The Panel refreshfunction may affect the panel. As a reference,perform
the Panel refreshonlyonce a year, do notperformit more thanonce a
year as it may affectthe usable life of the panel.
•Panel refresh takes aboutonehour to complete.
•A white line may be displayed on the screenduring the Panel refresh,
this is not a malfunction of the TV.
•Panel refresh will only work when the room temperatureis between 10
ºC and 40 ºC.
Pixelshift
Automatically moves the image on the screen to prevent image retention.
1-3. Caution_for_Board_handling
Symptom : The following problems will occur due to handling of the IC
mounted on the board
・Solder crack due to substrate handling (stress)
・IC breakdown due to static electricity (ESD)
When repairing the TV at the customer‘s home or service station or
Repair of defect board, please pay attention to the handling of the board
※Substrate that needs attention for handling
・Main Board（B** -Board）
・Backend Board（D** -Board）
SECTION 1
SAFETY NOTES
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8
ESD wrist-strap
ESD wrist-strap to be checked daily.
Use Multi-meter to make sure resistance of ESD wrist-strap is OK.
(R=750K Ohms to 35Mega Ohms)
ESD cushion/sheet
Please use a bag containing the board or a special seat
※Things to prepare in advance 1) Caution for Board handling(Stress)
Be sure to observe the following contents.
③Handle with care. Do not swing.
①Hold the board with both hands
②Do not hold/push Heat-Sink
SECTION 1
SAFETY NOTES
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9
④Regardless of Good board or Defective board, always put it
on ESD cushion/sheet slowly.
⑤Do not stack up
⑥Keep vertical position and put in/take out from Box.
Always put in to ESD bag then place into Box/Container Box.
⑦Do not hold Heat-Sink when take out or install it..
2) Caution for Board handling(ESD)
Be sure to observe the following contents.
①When take off Rear-Cover,
do not touch to board ②Use ESD wrist-strap
SECTION 1
SAFETY NOTES
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10
※Installation example of wrist-strap
Please connect the clip to the metal part of the chassis of the TV with the
wristband grounded.Below is a grounding example of each model.
＜K*-55/65A9F＞
＜K*-65Z9F＞
※Caution
ESD wrist-strap to be checked daily.
Use Multi-meter to make sure resistance of ESD wrist-strap is
OK.(R=750K Ohms to 35Mega Ohms)
1
0
③When holding board, do not hit/touch to Plastic part(s)
④After take defective board out from TV, put it into ESD bag.
Do not place on floor mat/carpet direct. And, always put it on
ESD cushion
SECTION 1
SAFETY NOTES
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11
1-4. Caution About the Lithium Battery
1) Dangerof explosion if batteryis incorrectly replaced. Replace only
with the same or equivalent type.
2) Outer case brokenbatteryshouldnot contact to water.
1-5. Safety Check-Out
Aftercorrectingthe original service problem, performthe following
safetychecks before releasing the set to the customer:-
1)Check the area of your repair forunsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and
bridges.
2)Check the inter board wiring to ensure that no wires are pinchedor
contact high-wattageresistors.
3)Check all control knobs, shields, covers, ground strapsand mounting
hardware have been replaced. Be absolutely certain you have replaced
all the insulators.
4) Look for unauthorized replacement parts, particularly transistors that
were installed during aprevious 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, metalized knobs, screws and
all other exposed metal parts for AC leakage.Check leakage test as
described next.
8. For safety reasons, repairing the Power board and/or Inverter board is
prohibited.
1-6. 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 2. 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-pinplug): for each terminal, the worst value
of measurementmust not exceed AC 350uA peak).
Note: including AC adaptor,AC adaptor/DC operated unit
combination
Figure 2 – Measuring network
for LeakageCurrent
SECTION 1
SAFETY NOTES
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12
1-8. Lead Free Information
The circuitboards used in these modelshave been processed using
Lead Free Solder. The boards are identified by the LF logo located
close to the board designation.
Figure 4: LF Logo Figure 5: LF logo on circuit board
1-7. Howto Find a GoodEarth Ground
1)A cold-water pipe is a guaranteedearth ground; the cover-plate
retaining screw on most AC outletboxes is also at earth ground.
2)If the retaining screw is to be used as yourearth 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.
3)If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble-
light (not a neonlamp) 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 3).
Figure 3. Checking for earth
ground.
The servicing of these boards requires special precautions. It is
stronglyrecommendedto use Lead Free Solder material in order to
guaranteeoptimal quality of new solder joints.
SECTION 1
SAFETY NOTES
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSTMENT DIAGRAMS PANEL HANDLING FACTORY DATA RESET
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SECTION 2
SELF DIAGNOSTIC FUNCTION
13
The units in this manual contain a self-diagnosticfunction.If an error occurs, the Smart Core Red LED willautomaticallybegin to flash. The number of
times the LED flashes translates to a probable source of the problem.
Adefinitionof 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 datastored in memory to reveal past
problems and how often these problems occur.
DIAGNOSTICTEST INDICATORS
Whenan error occurs, the Smart Core Red LED will flash aset 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 .
LED Indicator
• Lights up in white when you select “Picture Off”.
• Lights up in white when the TV is turned on.
• Flashes while the remote is being operated.
Status LED Color Remarks
Power Off
( AC Off and *1) OFF *1 power switch off (by Side Key)
Power On White
Standby
( by remote control off
and Side Key off)
OFF
Picture Off White
Failure Red Blinking The number of LED blinking
indicates cause of failure.
Panel ID mismatch Amber / Green Blinking Blinking:0.5sec Amber/ 0.5sec
Green
Software Updating Amber Blinking Blinking: 1sec On / 1sec Off
Software Updating failure Amber Blinking
Blinking: 1sec On / 1sec Off
OSD message will be shown to
inform that the update failed and
then TV reboots
Amber = Red + Green
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSTMENT DIAGRAMS PANEL HANDLING FACTORY DATA RESET
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SECTION 2
SELF DIAGNOSTIC FUNCTION
14
Failure LED Display
Number of Red LED Blinking Go to Standby State Error Detection Error Location
2Yes Main Power Error Main Board or Power Supply Board or LD board
or Power Adapter
3No Audio Error Main Board or Speaker or LD board
5No Panel I2C COMM Error Main Board or T-CON board or Panel Module
6No Backlight Error Main Board or Power Supply Board or LD board
[Note]
Please be caution when checking failure board due to power is still supplied continuous when error is triggered.
Please perform AC OFF/ON for trying of recovery method.
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSTMENT DIAGRAMS PANEL HANDLING FACTORY DATA RESET
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SECTION 3
TROUBLESHOOTING
15
Triage Chart
Sony KD-* Technical Triage Summary Sheet
Before you make the service call…
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
GREEN SQUARE: Tertiary possible defective part
BLACK TEXT: Board that may correct the symptom
CHASSIS: NR 43 / 49
Reference
Symptoms -Shutdown. Power LED
blinking red diagnostics sequences No
Power Video
-missing or distorted Remote Network Audio Smart Core Bluetooth (BT)
2 3 4 5 6 7 8 9 10
No White
Power LED &
does not
response to
remote (Dead
Set)
Stationar
y colored
lines or
dots
No video
One of
Inputs
No video
all Inputs No
Remote
Wireless
can't
connect No Audio
Smart Core no LED
(Set is still alive)
Bluetooth / One
Step Remote
(OSR) can't
connect
Main Board           
Receiver Board  
Power Adapter 
Speaker 
Wifi & BT Module  
Local Dimming
Board 
VBO FFC   
Tcon  
LCD Panel    
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSTMENT DIAGRAMS PANEL HANDLING FACTORY DATA RESET
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SECTION 3
TROUBLESHOOTING
16
Triage Chart
Sony KD-* Technical Triage Summary Sheet
Before you make the service call…
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
GREEN SQUARE: Tertiary possible defective part
BLACK TEXT: Board that may correct the symptom
CHASSIS: NR 55 / 65 / 75
Reference
Symptoms -Shutdown. Power LED
blinking red diagnostics sequences No
Power
Video
-missing or
distorted Remote Network Audio Smart Core Bluetooth (BT)
2 3 4 5 6 8 9 10
No White
Power LED &
does not
response to
remote (Dead
Set)
Stationar
y colored
lines or
dots
No video
One of
Inputs
No video
all
Inputs
No
Remote Wireless can't connect No Audio
Smart Core no LED
(Set is still alive)
Bluetooth / One
Step Remote (OSR)
can't connect
Main Board           
Receiver Board  
Speaker 
Wifi & BT
Module  
Power Board 
VBO FFC   
Tcon  
LCD Panel    
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSTMENT DIAGRAMS PANEL HANDLING FACTORY DATA RESET
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SECTION 3
TROUBLESHOOTING
17
2.1.1 LED Blinking: 2x (Main power Error)
G-Board (55” and above)
2-time blinking
Check “12V_MAIN”
at JL5516/JL5522 of CN5500
on BKR Board,
Voltage 12.2V~13.2V?
Yes
No
B-Board
G Board
2-time blinking
Check “12V_MAIN”
at JL5516/JL5522 of CN5500
on BKR Board,
Voltage 12.2V~13.2V ?
Yes
No
B- Board
LD board
Adaptor (43” and 49”)
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSTMENT DIAGRAMS PANEL HANDLING FACTORY DATA RESET
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SECTION 3
TROUBLESHOOTING
18
Checking Point
B-side
12V_Main
JL5522
JL5516
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SECTION 3
TROUBLESHOOTING
19
2.1.2 PSU trouble shooting flow
START
AC connect (80~288V)
Can TV power on?
F6101
Fuse OPEN check
Replace Power Supply
Replace Power Supply
No
STBY output check
(3.35~3.55V)
*PIN 5 CN6401
Yes
Case 1 No
No
Yes
Power ON
Input check
(~3.3V)
*PIN 9 CN6401
No
Yes
RC can turn TV ON?
Yes
12V output check
(12.2~13.2)
*PIN 13~18 CN6401
Case 2
Main board problem
No
Replace Power Supply
No
BL_ON active HIGH
(~3.3V)
*PIN # refer appendix
Yes
No
LED output check
(*Depends on PSU type)
*PIN 2 or 5 CN6801
Yes
Case 3
Main board problem
BL_ERR level check
(~2.8V)
*PIN 8 CN6401
Yes
Replace Power Supply
Power Supply
working normal
No
No
Case 4
*refer to Appendix
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSTMENT DIAGRAMS PANEL HANDLING FACTORY DATA RESET
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SECTION 3
TROUBLESHOOTING
20
Pin Assignment of Connector CN6401 (Appendix)
GL6 (NR55) GL95 (NR65)
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