Philips AZ2785 Service Manual
Philips AZ2785 Service Manual

Philips AZ2785 Service Manual

Cd stereo radio recorder
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CD Stereo Radio Recorder
TABLE OF CONTENTS
Handling chip components and safety
Technical Specification & Service Tools
..................................................
Service Measurement
................................................
Connections & Controls
.................................................
Instructions for use
...................................................
Disassembly Diagram
........................................
CD Service Test Program
.............................................................
Block Diagram
...........................................................
Wiring Diagram
FRONT BOARD
.......................................................
circuit diagram
.......................................................
layout diagram
TUNER BOARD
.......................................................
circuit diagram
.......................................................
layout diagram
MAIN BOARD
.......................................................
circuit diagram
.......................................................
layout diagram
Safety regulations require that the set be restored to its original
condition and that parts which are identical with those specified
be used.
C
Copyright 1995 Philips Consumer Electroncis 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.
Published by SS 0115 Service Audio
PCS 107 296
chapter
.............................
1 - 1
..........................
2 - 1
2 - 2
3 - 1
3 - 2 to 3 - 6
4 - 1
4 - 2 to 4 - 3
5 - 1
6 - 1
7 - 1
7 - 2
8 - 1
8 - 2
9 - 1
9 - 2
Printed in The Netherlands
RECORDER BOARD
.......................................................
circuit diagram
.......................................................
layout diagram
CD MODULE
................................................
circuit diagram
..................................................
layout diagram
EXPLODED VIEW DIAGRAM
.................................................................
cabinet
............................................................
tape deck
.....................................................
Mechanical partslist
...............................................
Electrical partslist
Copyright reserved
Subject to modification
AZ2785
all versions
chapter
10 - 1
10 - 2
11 - 2 to 11 - 3
11 - 1, 11 - 4
12 - 1
12 - 2
12 - 2
13 - 1 to 13 - 7
CLASS 1
LASER PRODUCT
3140 785 22640
GB

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Table of Contents
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Summary of Contents for Philips AZ2785

  • Page 1 LASER PRODUCT Copyright 1995 Philips Consumer Electroncis 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.
  • Page 2: Handling Chip Components

    HANDLING CHIP COMPONENTS © ñ WARNING WAARSCHUWING All ICs and many other semiconductors are susceptible to Alle IC´s en vele andere halfgeleiders zijn gevoelig voor electrostatic discharges (ESD). Careless handling during electrostatische ontladingen (ESD). repair can reduce life drastically. Onzorgvuldig behandelen tijdens reparatie kan de levensduur When repairing, make sure that you are connected with the drastisch doen vermindern.
  • Page 3: Technical Specifications

    TECHNICAL SPECIFICATIONS GENERAL TUNER - AM SECTION Tuning range MW : 516 - 1620 kHz Mains voltage -/01/16 : 120/230 V -/17 : 520 - 1730 kHz -/17 : 120 V IF frequency : 468 kHz ± 3 kHz Mains frequency -/01/16 : 50 / 60 Hz MW : £...
  • Page 5: Connections And Controls

    CONNECTIONS AND CONTROLS PCS 107 298...
  • Page 6 INSTRUCTIONS FOR USE PCS 107 299...
  • Page 7 INSTRUCTIONS FOR USE PCS 104 446...
  • Page 8 INSTRUCTIONS FOR USE PCS 104 447...
  • Page 9 INSTRUCTIONS FOR USE PCS 104 448...
  • Page 10 INSTRUCTIONS FOR USE PCS 104 449...
  • Page 11: Disassembly Diagram

    DISASSEMBLY DIAGRAM A. To remove Front Cabinet Assembly B. To remove Top Cabinert C. To remove Main Board D. To remove Tuner Board Bracket E. To remove Tape Deck F. To remove Front Board G. To remove LCD Panel PCS 104 450...
  • Page 12: Cd Service Test Program

    CD SERVICE TEST PROGRAM CD TEST TUNER TEST To enter Service To enter Service Testprogramm hold Testprogramm hold PLAY & STOP buttons PLAY & STOP buttons STOP button pressed in any step returns depressed while switching depressed while switching to begin of Service Testprogram. CD mode on.
  • Page 13: Cd Startup Procedure

    CD STARTUP PROCEDURE Abbreviations and Pin-description of CD ICs SERVO PROCESSOR M62475FP BEGIN Name Direction Description Diode array Æ A, B, C Servo processor Current input (central photo diode signal input Diode array Æ E, F Servo processor Current input (satellite photo diode signal input Servo processor Æ...
  • Page 14: Block Diagram

    BLOCK DIAGRAM PCS 104 452...
  • Page 15: Wiring Diagram

    WIRING DIAGRAM PCS 104 453...
  • Page 16: Front Board - Circuit Diagram

    FRONT BOARD - CIRCUIT DIAGRAM PCS 104 454...
  • Page 17: Front Board - Layout Diagram

    FRONT BOARD - LAYOUT DIAGRAM PCS 104 455...
  • Page 18 TUNER BOARD ECO5 - CIRCUIT DIAGRAM 1103 D 2 1105 B 2 1121 E20 VERSION PROGRAMMING COMPONENTS 1122 G20 AM-IF1 AM-IF2 1126 E20 5111 5112 1130 I20 T046 6120 3156 3157 3170 remark 1131 I20 2101 C 6 450 kHz 450 kHz 2102 G 7 /00 FM/MW/LW...
  • Page 19: Tuner Adjustment Table

    TUNER BOARD ECO5 - LAYOUT DIAGRAM TUNER ADJUSTMENT TABLE ( ECO5 FM/MW- stereo versions with AM-frame aerial ) Waverange Input frequency Input Tuned to Adjust Output Scope/Voltmeter ECO 5 TUNER BOARD / component side view VARICAP ALIGNMENT 108MHz 5130 8V ±0.2V 3110 5130 87.5 - 108MHz...
  • Page 20: Main Board - Circuit Diagram

    MAIN BOARD - CIRCUIT DIAGRAM PCS 104 458...
  • Page 21: Main Board - Layout Diagram

    MAIN BOARD - LAYOUT DIAGRAM RECTIFIER BOARD - CIRCUIT DIAGRAM RECTIFIER BOARD - LAYOUT DIAGRAM POWER SWITCH BOARD - LAYOUT DIAGRAM PCS 104 459...
  • Page 22: Recorder Board - Circuit Diagram

    10-1 10-1 RECORDER BOARD - CIRCUIT DIAGRAM 71 G17 1707c J 9 1713 I 3 2705 J13 2712 K 5 2719 G 9 2728 G10 2734 G 6 2740 F10 2746 B 6 2752 J 8 3701 G12 3709 I13 3716 I 8 3722 H 6 3728 K10...
  • Page 23: Recorder Board - Layout Diagram

    10-2 10-2 RECORDER BOARD - LAYOUT DIAGRAM 71 D 3 2744 C 1 3737 D 1 6704 A 1 9741 A 3 72 D 2 2745 C 1 3738 D 1 6705 D 2 9742 A 3 1701 D 1 2746 C 1 3739 C 1 6706 C 1...
  • Page 24 11-1 11-1 CD97 (DA11 MK I) - LAYOUT DIAGRAM TRANSFER OF AUDIO SAMPLES VIA SERIAL INTERFACE CLOCK DISC MOTOR 4.23MHz WORD SELECT 176.4kHz left channel right channel TB 2us/Div DATA TB 0.5µs/Div 1300 E 4 3807 B 3 3891 B 4 INNERSWITCH DOOR SWITCH DOOR SWITCH...
  • Page 25 11-2 11-2 11-2 CD97 (DA11 MK I) - CIRCUIT DIAGRAM 1300 E29 1800 E11 1801 F31 1802 Q 5 CD PART 1803 D11 7801 1804 K26 M65821FP 3801 1805 D 8 5060 4.80V EFM TMG GEN. VDD1 2802 L22 VSS1 100u 2803 F17 SYNCH...
  • Page 26 11-3 11-3 11-3 CD97 (DA11 MK I) - CIRCUIT DIAGRAM 1300 F29 T804 O 7 1800 F11 T805 Q 7 1801 G31 T806 O 7 1802 Q 5 T807 P 7 1803 D11 T814 L26 1804 L26 T815 L26 Servo IC are changed from 1805 D 8 T816 L26 2802 J20...
  • Page 27 11-4 11-4 11-4 CD97 (DA11 MK I) - LAYOUT DIAGRAM 1300 D 3 2814 D 2 2835 A 1 3805 D 3 3824 D 1 3860 D 2 5000 D 3 9001 D 3 9820 C 1 2803 B 2 2873 A 1 2889 A 1 3848 A 1...
  • Page 28: Cabinet

    12-1 12-1 12-1 EXPLODED VIEW DIAGRAM - CABINET SCREWS LIST 11 (2x) 1. C M2 x 3 2. C M2.6 x 4 3. C M2.6 x 6 4. C M2.6 x 8 5. C M2.6 x 10 6. C 3 x 6 7.
  • Page 29: Mechanical Partslist- Cabinet

    12-2 12-2 MECHANICAL PARTSLIST- CABINET EXPLODED VIEW DIAGRAM - TAPE DECK 9965 000 08780 SPEAKER REAR CAB (L) 9965 000 08786 TAPE DECK CDS83WPB-05 9965 000 08779 SPEAKER GRILL 4822 492 11061 SPRING RECORDING 9965 000 08782 SPEAKER FRONT CAB 9965 000 08764 RECORDING CASS BRACKET 9965 000 08781...
  • Page 30 13-1 13-1 ELECTRICAL PARTSLIST - ECO5 TUNER BOARD ELECTRICAL PARTSLIST - ECO5 TUNER BOARD - CAPACITORS - - RESISTORS - - COIL & FILTER - 2101 5322 122 32531 100pF 5% NP0 50V 3110 4822 116 52195 0,5W 5131 4822 157 11843 Coil MD7B-01F 2102 4822 122 33177...
  • Page 31 13-2 13-2 ELECTRICAL PARTSLIST - CD (DA11 MKI) ELECTRICAL PARTSLIST - CD (DA11 MKI) 7805 = TDA7073A/N2 7805 = TDA7073A/N2 3847 4822 116 52298 680K 0,5W 6001 4822 130 30621 Diode 1N4148 2802 4822 126 12785 47nF Y5V TUB 50V 2860 4822 124 23178 47µF 20% 16V...
  • Page 32 13-3 13-3 ELECTRICAL PARTSLIST - CD97 DA11 MKI ELECTRICAL PARTSLIST - CD97 DA11 MKI 7805 = TCA0372DP1 7805 = TCA0372DP1 - CAPACITORS - - CAPACITORS - - RESISTORS - - RESISTORS - 2802 4822 126 12878 1,5nF 10% 16V 2870 4822 126 14585 100nF 10% X7R 50V 3830...
  • Page 33 13-4 ELECTRICAL PARTSLIST - CD97 DA11 MKI 7805 = TCA0372DP1 - DIODE - 6001 4822 130 30621 Diode 1N4148 - IC & TRANSISTOR - 7801 4822 209 13703 IC M65821FP 7802 4822 209 32421 IC TDA1311A/N2 7803 4822 209 90496 IC M62475FP 7804 9336 500 90126...
  • Page 34 13-5 ELECTRICAL PARTSLIST - MAIN BOARD - COILS - - MISCELLANEOUS - L101 4822 157 11371 COIL 47µH 4822 265 11614 STEREO PHONE JACK L801 4822 157 11371 COIL 47µH SW101 4822 276 14099 POWER SWITCH - DIODES - Note: Only these parts mentioned in the list are normal service parts.
  • Page 35 13-6 13-6 ELECTRICAL PARTSLIST - RECORDER BOARD ELECTRICAL PARTSLIST - RECORDER BOARD - CAPACITORS - - CAPACITORS - - RESISTORS - 2703 4822 124 41397 47µF 20% 25V 2763 4822 124 41584 100µF 20% 10V 3752 4822 116 52186 22R 5% 0,5W 2704 4822 124 41596 22µF 20% 50V...
  • Page 36: Electrical Partslist - Front Board

    13-7 13-7 ELECTRICAL PARTSLIST - FRONT BOARD ELECTRICAL PARTSLIST - RECTIFIER BOARD - COIL & FILTER - - DIODES - CY201 4822 242 11034 FILTER DCRHTL4.19 D110 5322 130 30684 DIODE 1N4002RL L201 9965 000 08177 INDUCTOR 100µH D111 5322 130 30684 DIODE 1N4002RL D112 5322 130 30684...

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