Sony KD-55X8 G Series Bedienungsanleitung

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SERVICE MANUAL (COMMON)

ORIGINAL MANUAL ISSUE DATE: 2019.02 GN5UR CHASSIS

Segment : SL

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 a

need-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:

somk-gcs-tissnexim-adm@jp.sony.com

(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.

9-888-764-01

LCD TV

Sony EMCS (M) Sdn. Bhd., SVPM

Version Date Subject

1 2019.02 1. 1st Issue

REVISIONHISTORY

MODEL

KD-55X8*G KD-65X8*G KD-75X8*G KD- 85X8*G

KD-55XG8* KD-65XG8* KD-75XG8* KD- 85XG8*

XBR-55X8*G XBR-65X8*G XBR-75X8*G XBR–85X8*G

KJ-55X8*G KJ-65X8*G KJ-75X8*G

THIS SERVICE MANUAL CONTAINS COMMON INFORMATION FOR BELOW REGIONS AND MODELS:

REGION

ASIA AMERICA EUROPE CHINA JAPAN

MODEL LISTS

Please refer Service Manual – Unique for below information :

-Dissassy and Removal Caution

-Wire Dressing

-Circuit Board Location

-Exploded Views and Parts List

Note: Pictures provided in this manual may have difference from actual sets.

TABLE OF CONTENTS

Section Title Page

1 SAFETY NOTES 5

2 SELF DIAGNOSTIC FUNCTION 13

3 TROUBLE SHOOTING 18

4 SERVICE ADJUSMENT 105

5 DIAGRAMS 114

SECTION 1

SAFETY NOTES

Whenever a TV Main board 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.

1-2-1. Caution Handling of LCD Panel

When repairing the LCD Panel, make sure you are grounded with a wrist

band.

When repairing the LCD Panel on the wall, the panel must be secured

using the 4 mounting holes 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 LCD panel 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 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 circuit.

9) Protect the panel from ESD to avoid damaging the electronic circuit

(C-MOS).

1-1. Warnings and Caution

1) CAUTION :These servicing instructions are for use by qualified service

personnel only.

2) 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.

3) 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.

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 does not carry out replacing an internal

fuse.)

4) 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.

5) SAFETY-RELATED COMPONENT WARNING!! :Components identified

by shading and !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 improper operation 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 carried out with Mainboard replacement.

*Do not recommend power-on in the conditions which laid face down the

panel, in repair activity. Refer Figure 1 .

*When transporting by hand, do not put 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) OLED Screen

•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 property of the OLED screen and is

not a malfunction.

•Do not push or scratch the front filter, or place objects on top of this TV

set. The image may be uneven or the OLED screen may be damaged.

•The screen and cabinet get warm when this TV set is in use. This is not

a malfunction.

3) Precautions to Protect the Screen from Damage

Image retention

OLED TV’s are susceptible to image retention (burn-in) due to the

characteristics of the materials used. Image retention may 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 and bottom and/or the left and

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 from applications.

•On-screen tickers, such as those used for news and headlines.

Figure 1.

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 .

1-2-2. Caution for OLED Panel

1) Handling

When repairing the TV set, be sure you are grounded by using a wrist band.

*Do not press on the panel or frame edge to avoid the risk of electric shock.

*Do not scratch or press on the panel with any sharp objects.

*Do not leave the module in high temperatures or in areas of high humidity

for an extended period of time.

*Do not expose the panel to direct sunlight.

*Avoid contact with water. It may cause a short circuit within the module.

*Disconnect the AC power when replacing.

*Always clean the panel with a soft cloth material.

*Use care when handling the wires or connectors. Damaging the wires may

cause a short.

*Protect the panel from ESD to avoid damaging the electronic circuit.

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 offthe OSD (On Screen Display) by pressing the DISPLAY button,

and turn offthe menus fromconnected equipment.For details, referto

the instruction manuals forthe connected equipment.

•Avoid displaying static images with bright colours (including white),

clocks or logos on any portion 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 carrying out OLED panel replacement,it is mandatory of a

service center to confirmand record Panel ON time & Panel

Refreshtimes.

It is because they are indispensable informationin order to clarify

responsibility for image retention after panel replacement.

Please referto the chapter of SELF DIAGNOSIS FUNCTION in this

service manual to find out how 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 has been in use forlong periods of time.

Panel refreshcan also be performedmanually and 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 refreshonly once a year, do not performit more than once a

year as it may affectthe usable life of the panel.

•Panel refresh takes about one hour to complete.

•A white line may be displayed on the screen during 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.

Pixel shift

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）

1) Caution for Board handling(Stress)

Be sure to observe the following contents.

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

③Handle with care. Do not swing.

①Hold the board with both hands

②Do not hold/push Heat-Sink

※Things to prepare in advance

④Regardless of Good board or Defective board, always put it

on ESD cushion/sheet slowly.

⑤Do not stack up

⑦Do not hold Heat-Sink when take out or install it..

⑥Keep vertical position and put in/take out from Box.

Always put in to ESD bag then place into Box/Container Box.

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

※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)

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

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