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Sony Trinitron KV-25FX20A User Manual

Sony Trinitron KV-25FX20A
57 pages
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SERVICE MANUAL FE-1A CHASSIS
MODEL
COMMANDER DEST CHASSIS NO.
MODEL
COMMANDER DEST CHASSIS NO.
1
®
TRINITRON
®
COLOR TV
KV-25FX20A
RM-887 Italian SCC-Q32B-A
KV-25FX20B
RM-887 French SCC-Q33B-A
KV-25FX20D
RM-887 AEP SCC-Q31B-A
KV-25FX20E
RM-887 Spanish SCC-Q34B-A
KV-25FX20K
RM-887 OIRT SCC-Q36C-A
KV-25FX20R
RM-887 OIRT SCC-Q36D-A
KV-29FX20A
RM-887 Italian SCC-Q32A-A
KV-29FX20B
RM-887 French SCC-Q33A-A
KV-29FX20D
RM-887 AEP SCC-Q31A-A
KV-29FX201D
RM-887 AEP SCC-Q31E-A
KV-29FX20E
RM-887 Spanish SCC-Q34A-A
KV-29FX201E
RM-887 ESP SCC-Q34E-A
KV-29FX20K
RM-887 OIRT SCC-Q36B-A
KV-29FX20R
RM-887 OIRT SCC-Q36A-A
KV-29FX20U
RM-887 UK SCC-Q35A-A
MICROFILM

Table of Contents

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Sony Trinitron KV-25FX20A Specifications

General IconGeneral
Screen Size25 inches
Display TechnologyCRT
Screen TypeFlat
Aspect Ratio4:3
Audio OutputStereo
Remote ControlYes
Audio Output Power10W (5W x 2)
InputsComposite, RF

Summary

SECTION 1 GENERAL

Remote Control and Basic TV Operations

Explains basic operations using the remote control for TV functions.

Channel Tuning and Picture Adjustment

Guides on channel tuning and adjusting picture parameters for optimal display.

Sound Settings and Sleep Timer

Details how to adjust audio settings and set the automatic TV power-off timer.

Teletext, External Connections, and Troubleshooting

Covers teletext, external connections, common problems, and technical specs.

SECTION 2 DISASSEMBLY

Initial Disassembly Procedures

Steps for removing the rear cover, chassis, and placing the unit in service position.

Internal Board Removal

Procedures for removing specific internal circuit boards like H and S1 boards.

Picture Tube and Anode Cap Removal

Detailed steps for removing the picture tube and safely handling the anode cap.

Main Bracket Bottom Plate Service

Instructions for removing and refitting bottom plates on the main chassis bracket for service access.

SECTION 3 SET-UP ADJUSTMENTS

Beam Landing and Purity Alignment

Procedure to adjust beam landing and purity for correct color convergence.

Convergence Adjustment Steps

Steps for adjusting static and dynamic convergence for accurate RGB color alignment.

Focus and White Balance Calibration

Adjusting focus for sharp images and white balance for accurate color reproduction.

SECTION 4 CIRCUIT ADJUSTMENTS

Service Mode Access and Electrical Adjustments

Guide on accessing service mode and performing electrical adjustments using the remote.

Test Mode 2 Functions Explained

Details the various functions and tests available within Test Mode 2.

SECTION 5 DIAGRAMS

System Block Diagrams

High-level system diagrams illustrating the overall TV circuitry.

Circuit Board Location Guide

Identifies the physical location of key circuit boards within the TV chassis.

Schematic Diagrams and Wiring Layouts

Detailed circuit schematics and printed wiring board layouts for service reference.

SECTION 6 EXPLODED VIEWS

Chassis Assembly Breakdown

Illustrated breakdown of the TV chassis showing major assemblies and parts.

Picture Tube Exploded View

Detailed illustration of the picture tube assembly and its components.

SECTION 7 ELECTRICAL PARTS LIST

Component Lists for Major Circuit Boards

Comprehensive lists of parts for various circuit boards (F, A, C, VM, H, K, S1) used in the TV.

Accessories, Packaging, and Manuals

Lists included accessories, packaging materials, and related manuals.

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