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2020/12/12 02:35:59 (GMT+09:00)
SERVICE MANUAL (COMMON)
ORIGINAL MANUAL ISSUE DATE:
(See next page for revision )
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.
2020.03
GN6VU CHASSIS
Segment: NR
9-888-781-03
LCD TV
Sony EMCS (M) Sdn. Bhd., SVPM
© 2020.12
SYS SET
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Summarization of Contents
SERVICE MANUAL (COMMON)
REVISION HISTORY
Document revision history with dates and subjects of changes.
MODEL LISTS
Lists the regions and models covered by this service manual.
SECTION 1 SAFETY NOTES
1-1. Warnings and Caution
General safety warnings for service personnel, including electric shock and carrying precautions.
1-2-1. Caution Handling of LCD Panel
Specific handling precautions for LCD panels to prevent damage and ensure safety.
1-2-2. Caution for OLED Panel
Handling precautions specific to OLED panels, including screen care and image retention.
1-3. Caution for Board Handling
Precautions and symptoms related to handling circuit boards, focusing on stress and ESD.
ESD Precautions and Preparation
Steps and items required for safe handling of electronic boards, including ESD protection.
ESD Board Handling Procedures
Detailed procedures for handling electronic boards to prevent ESD damage and ensure proper storage.
Component Handling and Safety Checks
Cautions for lithium batteries, safety check-out procedures, and leakage testing methods.
Grounding and Lead-Free Solder Information
Guidance on finding good earth grounds and information about lead-free solder usage.
SECTION 2 SELF DIAGNOSTIC FUNCTION
Diagnostic Test Indicators and LED Behavior
Explanation of the self-diagnostic function, LED indicators, and their meanings.
Failure LED Display Mapping
Table mapping LED blinking patterns to specific error detections and locations.
SECTION 3 TROUBLESHOOTING
Triage Chart and Color Code
A summary chart for troubleshooting symptoms and a color code for identifying defective parts.
LED Blinking: 2x (Main Power Error) Troubleshooting
Flowchart for diagnosing main power errors indicated by 2x LED blinking.
PSU Troubleshooting Flowchart
Step-by-step flowchart for troubleshooting power supply unit issues.
Connector CN6401 Pin Assignment (Appendix)
Pin assignment details for connector CN6401, critical for troubleshooting specific boards.
LED Output Voltage Specifications (Appendix)
Voltage specifications for LED output based on segment and PSU type.
2.1.3 : 2x Blinking – Main Power Error Diagnosis
Detailed troubleshooting steps for main power errors indicated by 2x LED blinking.
No Power Troubleshooting Flowchart
Flowchart for diagnosing 'No Power' issues on the LD board.
12V DDCON and 12V_TCON Check Procedures
Flowcharts for checking 12V DDCON and 12V_TCON circuits for troubleshooting.
2.1.4 Power u-com Failure Analysis
Signal path summary for power u-com control, aiding in failure analysis.
2.1.5 No POWER - DDCON/LDO Troubleshooting
Troubleshooting steps for 'No POWER' issues related to DDCON/LDO circuits.
DDCON Check Procedures for BKR Board
Flowchart for checking DDCON circuits on the BKR board.
DDCONs Check Procedures for BKR Board
Flowchart for checking multiple DDCONs on the BKR board.
BKR Board Component Layout (A-side)
Diagram showing the layout of components on the A-side of the BKR board.
LDOs Check Procedures for BKR Board
Flowchart for checking LDO voltage regulators on the BKR board.
2.2 No Sound Troubleshooting Overview
Index of common sound-related issues and their troubleshooting sections.
2.2.1 : 3x Blinking – Audio Error Troubleshooting
Flowchart for diagnosing audio errors indicated by 3x LED blinking.
2.2.2 Main Speaker No Sound Troubleshooting
Flowchart for troubleshooting issues where the main speakers produce no sound.
2.2.3 Headphone Out No Sound Troubleshooting
Flowchart for diagnosing problems with the headphone audio output.
2.2.4 Analog Audio Input No Sound Troubleshooting
Flowchart for troubleshooting no sound issues with analog audio input.
2.2.5 Analog RF No Sound Troubleshooting
Flowchart for diagnosing no sound issues with analog RF signals.
2.2.6 HDMI Audio No Sound Troubleshooting
Flowchart for troubleshooting no audio issues when using HDMI.
2.2.7 Optical Out No Sound Troubleshooting
Flowchart for diagnosing no sound issues with optical audio output.
2.3.1 LED Blinking : 5x (Panel ID Read Error) Troubleshooting
Flowchart for diagnosing panel ID read errors indicated by 5x LED blinking.
BKR PWB Layout for Panel ID Check
PWB layout showing connection points for checking panel ID errors.
2.3.2 6x Blinking Backlight Error Troubleshooting
Flowchart for diagnosing backlight errors indicated by 6x LED blinking.
2.3.3 No Power (Screen Blank, No Backlight) Troubleshooting
Flowchart for diagnosing 'No Power' issues with a blank screen and no backlight.
2.3.4 No Picture Troubleshooting
General flowchart for diagnosing 'No Picture' issues on the BKR board.
2.3.5 NO PICTURE: TUNER (Analogue and Digital) Troubleshooting
Flowchart for diagnosing 'No Picture' issues related to the tuner for analogue and digital signals.
2.3.5 Analogue and Digital Tuning Failed Troubleshooting
Flowchart for diagnosing failures in analogue and digital tuning processes.
2.3.6 HDMI No Picture Basic Checking
Basic checks for 'No Picture' issues when using HDMI connections.
2.3.6 HDMI Failure (No Picture) – Main Board Analysis
Flowchart for analyzing main board failures related to HDMI 'No Picture'.
2.3.6 HDMI Failure (No Picture) – +5V FA Flowchart
Flowchart for diagnosing HDMI 'No Picture' issues related to the +5V supply.
2.3.6 HDMI Failure (No Picture) – HPD FA Flowchart
Flowchart for HDMI 'No Picture' diagnosis focusing on HPD (Hot Plug Detect) signal.
2.3.6 HDMI Failure (No Picture) – I2C (SCL&SDA) FA Flowchart
Flowchart for HDMI 'No Picture' issues related to I2C communication (SCL/SDA).
2.3.6 HDMI Failure (No Picture) – HDCP FA Flowchart
Flowchart for diagnosing HDMI 'No Picture' issues related to HDCP (High-bandwidth Digital Content Protection).
2.3.6 HDMI Failure (CEC no function) – CEC FA Flowchart
Flowchart for troubleshooting HDMI CEC (Consumer Electronics Control) function failures.
2.3.6 HDMI Failure (No Audio) – HDMI No Audio FA Flowchart
Flowchart for diagnosing HDMI 'No Audio' issues.
2.3.6 HDMI Failure (No ARC) – HDMI No ARC FA Flowchart
Flowchart for troubleshooting HDMI ARC (Audio Return Channel) function failures.
2.3.7 Video Analog Signal Path (WW Destination)
Diagram illustrating the video analog signal path for WW destination models.
2.3.7 No Picture – Investigation Flow (WW Destination)
Investigation steps for 'No Picture' issues on WW destination models using composite input.
2.3.7 No Picture – Actions (WW Destination)
Recommended actions for 'No Picture' issues based on specific conditions like muffin or connector problems.
2.3.7 No Picture – Parts Location (WW Destination)
Visual guide to the location of specific parts relevant to 'No Picture' issues.
2.3.7 No Picture – Input Skip Function (WW Destination)
Explanation of the input detection mechanism for analog video signals.
2.4.1 Ethernet Connectivity Troubleshooting
General checking procedures for Ethernet 'No Connect' issues.
2f.5 Ethernet – No Connect Checking Point
Identification of Ethernet components on the BKR board for checking.
WiFi Malfunction Diagnosis
Steps to diagnose WiFi malfunctions, including signal strength and module checks.
WiFi Malfunction Troubleshooting Continuation
Continuation of WiFi malfunction diagnosis, focusing on harness and board checks.
Bluetooth Malfunction Diagnosis
Troubleshooting steps for Bluetooth (Voice Remote/Keyboard/Mouse) malfunctions.
2.5.1 USB Port 1 Troubleshooting
General checking procedures for USB Port 1 issues like no detection or playback.
2.5.1 USB Port 2 Troubleshooting
General checking procedures for USB Port 2 issues like no detection or playback.
USB Port 1 – 5V Checking Points
Identification of 5V checking points for USB Port 1 on the BKR board.
USB Port 2 – 5V Checking Points
Identification of 5V checking points for USB Port 2 on the BKR board.
2.5.2 Key Switch Buttons Error Troubleshooting
Flowchart for diagnosing errors related to key switch buttons and resistor checks.
Key Switch Resistor Location (BKR)
Diagram showing the location of resistors related to key switch buttons on the BKR board.
SECTION 4 SERVICE ADJUSTMENT
How to Enter Service Menu
Step-by-step guide with screenshots on how to access the TV's service menu.
Key Behavior Summary in Service Menu
Summary of remote control key functions and their behavior within the service menu.
Software Version Information
Instructions on how to view the TV's software version and model information in the service menu.
Model Information – Model Name Setting
Guide on how to select and set the model name within the service menu.
Model Information – Serial Number Setting
Guide on how to enter and set the serial number for the TV.
How To Enter Self Check Function
Instructions on accessing the self-check diagnostic function within the service menu.
Self Diagnosis Menu Information and Controls
Explanation of the self-diagnosis menu, error codes, and operation times.
Failure Diagnosis by LED Indicators
Table mapping LED flashing patterns to specific error items and descriptions.
Data Transfer: TCON to Main SoC
Procedure for transferring data from TCON to Main SoC, applied after board replacement.
Tuner Detection Procedure
Steps to perform tuner detection and interpret the tuner status.
Summary of Service Menu Controls
Overview of remote control functions for navigating and operating the service menu.
Appendix: Specification Codes
List of specification codes and their corresponding region or country details.
SECTION 5 DIAGRAMS
FY20_4K System Block Diagram
High-level block diagram illustrating the system architecture and major component connections.
SECTION 6 PANEL HANDLING
Panel Unpacking and Protection
Instructions for safely unpacking the TV panel and protecting it during removal.
Module Protection During Removal
Guidelines for protecting remaining modules when removing the panel.
Panel Handling Guide: Safe Grip and Touch
Guidance on correctly holding and touching the panel to avoid damage, emphasizing glove use.
Panel Handling Guide: Carrying Positions
Instructions on proper carrying positions (vertical, horizontal, 2 persons) for the TV panel.
Panel Handling Guide: Resting and Carrying Methods
Guidance on correct methods for resting and carrying the TV panel by corners or center.
Panel Handling Guide: Handling Without Gloves and Pressing
Precautions against handling the panel without gloves and pressing on it during assembly/disassembly.
SECTION 7 FACTORY DATA RESET
Factory Data Reset via UI Method (SW v60020 and below)
Step-by-step instructions for performing a factory data reset using the TV's user interface for older software versions.
Factory Data Reset via UI Method (SW v60101 and above)
Step-by-step instructions for performing a factory data reset using the TV's user interface for newer software versions.
Factory Data Reset via Force Method
Instructions for performing a factory data reset using physical buttons on the TV.
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