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Sony KDL-55W790B - User Manual

Sony KDL-55W790B
29 pages
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REPAIR MANUAL
Self Diagnosis
Supported model
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
LCD Digital Color TV
9-888-601-01
RB2G Chassis
Segment: HE
Version Date Subject
1.0 04/16/2014 Original Manual Release Date.
MODEL COMMANDER DESTINATION
KDL-55W790B RM-YD102 US/CND
KDL-55W800B RM-YD102 US/CND
KDL-55W800B
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Summary

CAUTIONS AND WARNINGS

General Servicing Precautions

Servicing instructions for qualified personnel only; avoid electric shock and use isolation transformer.

Safety-Related Components

Critical safety components must be replaced with specified Sony part numbers.

Prohibited Repairs

Component level repair of Power Supply and Inverter Boards is prohibited for safety.

Lithium Battery Handling

Replace lithium batteries with identical/equivalent type to prevent explosion risk.

Post-Repair Safety Checks

Perform checks for soldering, wiring, insulation, and components before customer release.

AC Leakage Testing Procedure

Check AC leakage from exposed metal parts to ground, limit 0.5 mA.

Earth Ground Verification Method

Verify earth ground using outlet box retaining screw and a test lamp.

SECTION 1 - SPECIFICATIONS AND LAYOUTS

TV Specifications Overview

Details TV system, channel coverage, panel system, speaker output, and wireless technology.

Input;Output Jack Descriptions

Lists and describes various input/output ports like HDMI, USB, LAN, and AUDIO.

Model Specifications (KDL-55 W790 B;55 W800 B)

Provides technical specs for models including power, dimensions, resolution.

Accessory Checklist

Lists standard accessories included with the TV, such as remote, batteries, and cables.

Optional Accessory List

Lists optional accessories like remote controls, 3D glasses, and wireless subwoofers.

Board Layout Diagrams

Diagram showing placement of key boards: LD, TUS, Main, Smart Core, Switch Unit.

Smart Core Block Assembly View

Exploded view of Smart Core Block: BT Module, HSC2 Board, Wireless LAN Card.

Wire Dressing Illustration

Illustrates internal wiring and cable management within the TV.

Smart Core Block Component Detail

Further illustration or detail of the Smart Core Block assembly.

SECTION 2 - TROUBLESHOOTING

Diagnosing TV Errors

Steps to diagnose TV issues: verify symptom, check software, determine part.

Viewing Self Check Diagnosis History

Accessing the Self Check screen to view error history and count.

Triage Chart for Troubleshooting

Chart to identify likely defective parts based on symptoms and blinking LED sequences.

Overall Block Diagram

High-level block diagram showing interconnections between Main Board, Tuner Board, Smart Core, and LCD Panel.

Power and Control Block Diagram

Detailed block diagram showing power and control signal flow between LD Board and Main Board.

No Power Flowchart

Flowchart to diagnose and resolve 'No Power' issues, checking AC Adaptor and STBY voltage.

Standby LED Blinking Flowchart

Flowchart to diagnose issues based on standby LED blinking patterns (2X, 3X, etc.).

Video Distortion Flowchart

Flowchart to troubleshoot video distortion, checking for lines, colors, and screen issues.

No 3 D Viewing Flowchart

Flowchart to diagnose and resolve 3D viewing problems, checking remote and glasses.

SECTION 3 - REPAIR INFORMATION

General TV Repair Steps

Steps for repairing the TV: verify symptom, replace part, update software, perform adjustments.

Removing the Rear Cover

Procedure for safely removing the TV's rear cover, including screw and hook release.

Replacing Main Board or Tuner Board

Step-by-step guide for replacing the Main Board or Tuner Board, including software update.

Service Mode: Model and Destination Update

Procedure to update Model Name and Destination Data via Service Mode.

Service Mode: Serial Number Update

Procedure to update the TV's Serial Number via Service Mode.

Service Mode: Variable Type Update

Procedure to update the Variable Type setting in Service Mode.

Service Mode: Board Check Verification

Verifying Main Board and Tuner Board replacement results in Service Mode.

Clearing Self Check and Exiting Service Mode

Steps to clear error history and exit Service Mode/Self Check Mode.

Removing the TV Speakers

Procedure for disconnecting and removing the TV speakers.

Replacing the Switch Unit

Procedure for replacing the TV's Switch Unit.

Removing the Smart Core Block

Step-by-step guide to remove the Smart Core Block assembly from the TV.

SECTION 4 - EXPLODED VIEW;PART NUMBER INFORMATION

Table Top Stand Parts Identification

Exploded view and part numbers for the table top stand assembly.

Chassis Component Part Numbers

Exploded view and part numbers for chassis components like rear cover, power cord, AC adaptor, switch unit.

Smart Core Block Component Parts

Exploded view and part numbers for Smart Core Block components: front/back covers, BT module, HSC2 board.

Connector and Harness Part Numbers

Exploded view and part numbers for internal connectors and harness assemblies.

Screw Types and Usage Guide

List of screw types, their P/N, and usage for different TV components.

SECTION 5 - ACCESSORIES;PART NUMBER INFORMATION

Included Accessories and Packaging

Lists screws, manuals, and 3D glasses kits included with the TV.

Optional Accessories List

Lists optional accessories like support belt kit and remote commander.

Miscellaneous Item List

Lists miscellaneous items such as stoppers, tapes, and safety flyers.

APPENDIX A: ENCRYPTION KEY COMPONENTS

Encryption Key Component Handling

Instructions for handling, replacing, and destroying circuit boards with encryption key components.

Sony KDL-55W790B Specifications

General IconGeneral
BrandSony
ModelKDL-55W790B
CategoryTV
LanguageEnglish

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