Philips 21PT9470/44 User Manual

Published by MB/JY 1064 BU TV Consumer Care, the Netherlands Subject to modification EN 3122 785 18961
2010-Apr-23
©
Copyright 2010 Koninklijke Philips Electronics N.V.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic, mechanical,
photocopying, or otherwise without the prior permission of Philips.
Color Television Chassis
SK8.0L
CA
18690_000_090722.eps
090722
21SL9
21SL9
Contents Page
1. Revision List 2
2. Technical Specifications and Connections 2
3. Precautions, Notes, and Abbreviation List 3
4. Mechanical Instructions 7
5. Service Modes, Error Codes, and Fault Finding 8
6. Alignments 9
7. Circuit Descriptions 14
8. IC Data Sheets 15
9. Block Diagrams
PWB locations 23
Block Diagram Chassis 24
21SL9 Schematic Overview Chassis 25
10. Circuit Diagrams and PWB Layouts Diagram PWB
21SL9 Mono Carrier: Power Supply
(A1) 26 32-33
21SL9 Mono Carrier: Frame Deflection (A2) 27 32-33
21SL9 Mono Carrier: Tuner (A3) 28 32-33
21SL9 Mono Carrier: AV Switch (A4) 29 32-33
21SL9 Mono Carrier: Audio amplifier (A5) 30 32-33
21SL9 Mono Carrier: CPU & Decoder (A6) 31 32-33
CRT Board (B) 34 35
Side AV Panel (D) 36
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Philips 21PT9470/44 Specifications

General

Brand	Philips
Model	21PT9470/44
Category	TV
Language	English

Summary

Revision List

Technical Specifications and Connections

2.1 Technical Specifications

Details product specifications and links for further information.

2.2 Directions for Use

Provides information on accessing user manuals and support resources.

2.3 Connection Overview

Explains connection types, color abbreviations, and pinouts.

2.4 Chassis Overview

Refers to block diagrams for PWB/CBA locations.

Precautions, Notes, and Abbreviation List

3.1 Safety Instructions

Outlines essential safety regulations for repair and handling.

3.2 Maintenance Instructions

Recommends maintenance intervals based on usage conditions.

3.3 Warnings

Highlights critical warnings for preventing damage and ensuring safe operation.

3.4 Notes

Provides general guidance on measurements, component interchangeability, and symbols.

3.5 Abbreviation List

Lists and defines technical abbreviations used throughout the manual.

Mechanical Instructions

4.1 Set Disassembly

Details the step-by-step process for disassembling the TV set.

4.2 Set Re-assembly

Outlines the procedures for reassembling the TV set in reverse order.

Service Modes, Error Codes, and Fault Finding

5.1 Test Points

Specifies conditions for performing measurements during service.

5.2 Service Modes

Explains access to Factory Mode for service and alignment.

5.3 Error Codes

Indicates that error codes are not applicable for this model.

5.4 Fault Finding

Provides troubleshooting steps for common TV malfunctions and symptoms.

Alignments

6.1 General Alignment Conditions

Sets the conditions required for performing electrical adjustments.

6.2 Hardware Alignments

Details the main voltage adjustment procedure using a multimeter.

6.3 Software Alignments

Guides on entering factory mode and performing software-based alignments.

6.4 Factory mode Settings

Lists and explains various parameters adjustable in factory mode.

Circuit Descriptions

7.1 Introduction

Provides a general overview of the TV's platform and circuit descriptions.

7.2 The various circuits

Describes the function of individual circuits like Tuner, IF, Sound, and Decoder.

IC Data Sheets

8.1 Diagram A1, STR6554, (IC601)

Provides block diagram and pin configuration for IC601.

8.2 Diagram A1, PC817, (IC602)

Shows block diagram and pin configuration for IC602.

8.3 Diagram A2, LA78141, (IC301)

Details block diagram and pinning information for IC301.

8.4 Diagram A5, TDA7266SA (IC401)

Presents block diagram and pinning information for IC401.

8.5 Diagram A6, TDA12165 (IC101)

Displays block diagram for the TDA12165 IC (IC101).

Block Diagrams

PWB locations

Identifies the physical location of various Printed Wiring Boards (PWBs) on the chassis.

Circuit Diagrams and PWB Layouts

21SL9 Mono Carrier: Power Supply (A1)

Circuit diagram and PWB layout for the power supply unit.

21SL9 Mono Carrier: Frame Deflection (A2)

Circuit diagram and PWB layout for the frame deflection circuit.

21SL9 Mono Carrier: Tuner (A3)

Circuit diagram and PWB layout for the TV tuner module.

21SL9 Mono Carrier: AV Switch (A4)

Circuit diagram and PWB layout for the AV switching circuitry.

21SL9 Mono Carrier: Audio amplifier (A5)

Circuit diagram and PWB layout for the audio amplifier section.

21SL9 Mono Carrier: CPU & Decoder (A6)

Circuit diagram and PWB layout for the CPU and decoder functions.

CRT Board (B)

Circuit diagram and PWB layout for the CRT board assembly.

Side AV Panel (D)

Circuit diagram and PWB layout for the side AV input panel.