Philips CDR775 Service Manual

Published by RH 9969 Service DPS Hasselt Printed in the Netherlands Subject to modification 5 3104 125 40030
©
Copyright reserved 1999 Philips Consumer Electronics B.V. Eindhoven, The
Netherlands. 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.
Compact disc recorder CDR775
/00
AUDIO CD RECORDABLE/REWRITABLE
OPEN / CLOSE
PLAY / PAUSE
STOP
REC
TYPE
R
e
c
o
r
d
a
b
l
e
ON / OFF
OPEN / CLOSE
PLAY / PAUSE
STOP
EXT
SOURCE
ERASE
FINALIZE
OPEN / CLOSE
PLAY / PAUSE
STOP
EXT
SOURCE
ERASEFINALIZE
AUDIO CD RECORDABLE/REWRITABLE
AUDIO CD RECORDABLE/REWRITABLE
RECORD
CDR
CD
DOUBLE SPEED
CDR775 AUDIO CD RECORDER
6
5
6
K
K
J
J
5
AUDIO CD PLAYBACK
AUDIO CD PLAYBACK
PLAY/PAUSE
STOP
OPEN/CLOSE
PLAY/PAUSE
STORE/
MENU
STORE/
MENU
EASY JOG
EASY JOG
CANCEL/
DELETE
CANCEL/
DELETE
STOP
OPEN/CLOSE
ENTER
IR SENSOR
REM
TRACK
REC
TIME
DIGITAL
OPTICAL
ANALOG
PROG
SHUFFLE
REPEAT
S
CAN
I
I
CD
R
W
CHANGER
SYNC
MANUAL
RECORD
REM
TOTAL
A-B
ALL
TRACK
TIME
STEP
T
RACK
CD
RW
1
2
3
4
567
8
9
10 11
12
13
14
15
16
17
18
19
20
+
DISPLAY
SCROLL
DJ MODE
REPEAT
SHUFFLE
PROG
PHONES
CL 96532086_000.eps
080999
SERVICING
For servicing CDR775, the set can divided into three parts.
1. The display board (partly) 1 002, the I/O board 1004, the
headphone board (partly) 1002, the IR board (partly) 1002, the ON/
OFF & Standby LED board (partly) 1002 and the CD-out board
(partly) 1002 have to be repaired at component level. The power
supply unit 1003 is available as spare part, but can also be repaired
at component level.
2. The CDR module (containing the CDR loader 81, CDR main board
1001 and loader bracket 82, 83) will be exchanged completely in
case of failure. This complete CDR module is available as spare
part. Defective modules have to be returned for central repair.
3. The CD module (containing the CD loader 131, CD main board
1005 and loader bracket 132) is a new module with VAL1250
loader assy but also a separate CDM and separate loader parts will
be available via service stock. The CD main board can be repaired
at component level.
Also available: Circuit Description " The Basics of Compact Disc
Recordable/Rewriteable". Service code number 4822 725 25242.
Contents Page
1. Technical Specifications 2
2. Warning and Servicing Hints 4
3. User Instructions 7
4. Mechanical Instructions 19
Wiring Diagram CDR 19
Wiring Diagram CD loader 20
Exploded View CDR 21
Exploded View CD loader 22
Dismantling Instructions 23
5. Electrical and Circuit Diagrams
Diagram PWB
Overall Blockdiagram 24
Display Board 26 26
IR / On/Off &Standby LED Board 27 27
Headphone / CD-out Board 28 28
I/O Board 29 30
Power supply unit 31 32
CD-Mainboard 1A 33 37/38
CD-Mainboard 1B 34 37/38
CD-Mainboard 1C 35 37/38
CD-Mainboard 2 36 37/38
6. Diagnostic Software 39
7. Faultfinding Trees 43
8. Faultfinding Guide 49
9. List of Abbreviations 65
10. Partslist (mechanical and electrical) 71

Philips CDR775 Specifications

General

Type	CD Recorder
Audio Sampling Rate	44.1 kHz
Bit Depth	16-bit
Frequency Response	20 Hz - 20 kHz
Signal to Noise Ratio	> 90 dB
Dynamic Range	> 90 dB
Digital Inputs	Coaxial, Optical
Digital Outputs	Coaxial, Optical
Power Consumption	25 W
Disc Formats	CD-R, CD-RW
Analogue Inputs	2 x RCA
Analogue Outputs	2 x RCA
Headphone Output	1 x 6.35mm Jack

Summary

SERVICING

Servicing Strategy

Outlines the three main service parts of the CDR775 unit.

Technical Specifications

General, Input/Output, and Audio Specs

Covers general, input/output, and audio performance specifications of the CDR775.

Warnings and Servicing Hints

General Warnings and Hazards

Warns about ESD, laser radiation, and electrical shock hazards during service.

User Instructions

Controls, Connections, and Displays

Details front panel controls, rear connections, and display indicators.

User Instructions (Continued)

Recording Modes

Describes different recording modes for internal CD and external sources.

Mechanical Instructions

Wiring Diagrams

Shows wiring diagrams for the CDR775 and CD loader.

Mechanical Instructions (Continued)

Exploded Views

Provides visual breakdowns of the CDR775 unit and CD loader components.

Electrical and Circuit Diagrams

Block Diagrams

Presents high-level block diagrams of the CDR775 system components.

Electrical and Circuit Diagrams (Continued)

Circuit Diagrams Overview

Shows detailed circuit diagrams for various boards like Display, IR, and ON/OFF.

Electrical and Circuit Diagrams (Continued)

Power Supply Unit Circuit Diagram

Details the circuit diagram for the PSU 20PS317.

Diagnostic Software

Dealer Mode and Diagnostics

Explains dealer mode and diagnostic test procedures for player status.

Diagnostic Software (Continued)

Electrical Service Diagnostics

Details tests for software versions and defective components.

Faultfinding Trees

CDR-Module Faultfinding

Provides a flowchart for diagnosing issues with the CDR module.

Faultfinding Trees (Continued)

CD Module Faultfinding

Provides a flowchart for diagnosing CD module issues including power, display, and TOC.

Faultfinding Guide

Display Board Description and Tests

Details display board components, functions, and testing procedures.

Faultfinding Guide (Continued)

Power Supply Unit Description and Tests

Describes the PSU 20PS317, its pins, start-up, regulation, and circuit functions.

Faultfinding Guide (Continued)

CD Main Board Description and Voltages

Provides an overview of the CD main board and its required supply voltages.

List of Abbreviations

Signal Name Definitions

Provides an alphabetical list of signal names and their descriptions.

Spare parts list

Mechanical Parts List

Lists mechanical spare parts for CDR775, CD loader, and other units.

Spare parts list (Continued)

CD Loader and I/O Board Parts

Lists spare parts for the CD loader VAL1250 and I/O board.

Spare parts list (Continued)

Power Supply Unit Parts

Lists spare parts for the Power Supply Unit 20PS317.