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Philips AJ3970 Service Manual

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CD Clock Radio

TABLE OF CONTENTS

Handling Chip Components and Safety ..........................1 - 1
Technical Specification & Service tools...........................2 - 1
Service Measurement......................................................2 - 2
Instructions for use .................................................3 - 1..3 - 2
Disassembly Diagram......................................................4 - 1
CD Service Test program ................................................4 - 2
Block Diagram .................................................................5 - 1
Wiring Diagram ................................................................6 - 1
AF part.....................................................................7 - 1
Control part..............................................................7 - 2
Tuner part................................................................7 - 3
Layout diagram (component side)...........................8 - 1
Layout diagram (copper side)..................................8 - 2
©
Copyright 2001 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.
Published by LX 0222 Service Audio
10/11/2012
Printed in The Netherlands
Subject to modification
World of free manuals
Circuit Diagram........................................................9 - 1
Layout Diagram ......................................................9 - 2
Circuit Diagram......................................................10 - 1
Layout Diagram ....................................................10 - 1
Play Select Board & CD Door Switch Board
Circuit Diagram......................................................11 - 1
Layout Diagram ....................................................11 - 1
Exploded view - cabinet.................................................12 - 1
Mechanical partslist .......................................................12 - 2
Electrical partslist .............................................13 - 1 .. 13 - 6
www.nostatech.nl
AJ3970
MCR220BK
all versions
CLASS 1
LASER PRODUCT
© 3140 785 22940

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   Summary of Contents for Philips AJ3970

  • Page 1: Table Of Contents

    LASER PRODUCT © Copyright 2001 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.
  • Page 2 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 1 - 1 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.
  • Page 3: Technical Specification

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 2 - 1 TECHNICAL SPECIFICATION GENERAL TUNER - FM SECTION Tuning range : 87.5 - 108 MHz Mains voltage -/00 : 230 V IF frequency : 10.7 MHz ± 0.2 MHz -/05 : 240V Sensitivity : 22 dBf at 26dB S/N -/17 : 120 V Selectivity : 20 dB at 300kHz...
  • Page 4: Service Measurement

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 2 - 2 SERVICE MEASUREMENT Bandpass Tuner SW LF Voltmeter 250Hz-15kHz Aerial replacement e.g. PM2534 e.g. 7122 707 48001 RF Generator Capacitor e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday«s cage. Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).
  • Page 5: Instructions For Use

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 3 - 1 INSTRUCTIONS FOR USE World of free manuals...
  • Page 6 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 3 - 2 NSTRUCTIONS FOR USE World of free manuals...
  • Page 7: Disassembly Diagram

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 4 - 1 4 - 1 DISASSEMBLY DIAGRAM (4x) A. REMOVE BACK CABINET ASSEMBLY C. REMOVE COMBI BOARD ASSEMBLY - REMOVE SCREWS A1(3x10) 6 PCS - REMOVE SCREWS C3 (2.5x10) 4 PCS - REMOVE SCREWS C4 (2x8) 2 PCS (2x) (6x) D.
  • Page 8: Cd Service Test Program

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 4 - 2 4 - 2 SERVICE TEST PROGRAM STOP button pressed in any step returns to begin of Service Testprogram. To leave Service Testprogram disconnect To enter Service Test Program the power supply. keep ALARM RESET & PLAY Door switch is ignored →...
  • Page 9: Block Diagram

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 5 - 1 5 - 1 BLOCK DIAGRAM POWER AMP PRE-AMP 8 OHM ATM5 VOL-CTRL TUNER MODULE TDA2822/ TDA2822M AM/FM MUTE PWR ENABLE ICD01 CD MODULE VOLTAGE CD ENABLE REGULATOR POWER TMP86CH21F ADAPTOR AC/DC CD ENABLE /00/05 ~230V ~120V RADIO ENABLE...
  • Page 10: Wiring Diagram

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 6 - 1 6 - 1 WIRING DIAGRAM MODULE ICD01 TUNER CD DOOR SW AC/DC ADAPTOR BOARD 05 / VERSION TUNER AC/DC ADAPTOR ATM 5 17 / VERSION LAYOUT CELL MAIN BOARD SPEAKER AC/DC ADAPTOR 00 / VERSION LIGHT GUIDE BOARD PLAY / FUNCTION...
  • Page 11: Main Board- Circuit Diagram

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 7 - 1 7 - 1 MAIN BOARD- CIRCUIT DIAGRAM (AF PART) 0001 G11 2301 D3 2307 B1 2313 G10 2319 C10 2325 B13 2331 D2 2337 C13 2505 B5 2511 B7 2517 C9 2530 C9 3306 G2 3312 H2 3318 H5 3324 F9...
  • Page 12: Control Part

    P-2/3 :PROVISIONAL 6409 3486 7408 6406 BC847B 3482 100K 2434 BC847B 3476 3483 3483 3492 BAS316 +5.6V 470R BAS316 2442 2441 2445 2437 3492 PHILIPS 2444 3487 3481 2436 3442 2440 6407 100p 100n 100n 270R BAS316 World of free manuals...
  • Page 13: Tuner Part

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 7 - 3 7 - 3 MAIN BOARD - CIRCUIT DIAGRAM (TUNER PART) 1001 A4 1104 E3 1110 B11 2101 A4 5107a 5107b 2102 A4 5107c 2103 D4 SFE10.7MS3 SFE10.7MS2 CDA10.7MC1 All SMD Transistors T003 1001 FM-RF 180KHz 230KHz 2104 G7...
  • Page 14: Main Board - Layout Diagram

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 8 - 1 8 - 1 MAIN BOARD - LAYOUT DIAGRAM (COMPONENT SIDE) 1001 E1 2434 B7 7503 C3 9402 C6 1302 A3 2442 B6 7504 D3 9403 C6 1303 D6 2444 C3 7505 C3 9404 C6 1407 B5 2501 D2 7506 C3 9405 C7 1410 B4 2502 E3 7507...
  • Page 15 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 8 - 2 8 - 2 MAIN BOARD - CIRCUIT DIAGRAM (COPPER SIDE) 2101 E7 2407 B4 3311 C1 3434 B3 3516 D6 2102 E8 2408 A4 3312 C1 3435 C3 3517 C6 2114 C8 2409 B4 3313 E6 3437 C3 3518 D6...
  • Page 16: Ic D01 - Ax Cd Board Circuit Diagram

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 9 - 1 9 - 1 IC D01-AX CD Board - CIRCUIT DIAGRAM 1801 D10 1807 I14 2805 C3 2811 D10 2816 E11 2821 F2 2826 F5 2831 G6 2837 H6 2842 I7 2848 I8 2855 F5 3802 C5 3807 E7 3812 C9...
  • Page 17 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 9 - 2 9 - 2 IC D01-AX CD Board - LAYOUT DIAGRAM 1801 C5 3812 D5 3901 C3 1802 A3 3815 G2 4801 C1 1803 B2 3816 D4 4802 C1 1804 A2 3817 C1 4805 D5 CD-Board Copperside view 1805 F4 3818 D5...
  • Page 18: Alarm Board Circuit Diagram

    www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 10 - 1 10 - 1 ALARM BOARD - CIRCUIT DIAGRAM ALARM BOARD - LAYOUT DIAGRAM ALARM BOARD - CIRCUIT DIAGRAM 1411 B3 1414 B4 1421 B1 2435 D4 3446 A3 3449 A5 3489 F3 6405 D4 1411 B3 1414 1421...
  • Page 19 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 11 - 1 11 - 1 PLAY SELECT BOARD -CIRCUIT DIAGRAM CD DOOR SWITCH BOARD - CIRCUIT DIAGRAM 1422 A3 1424 A4 1426 A6 1428 A7 2426 A2 3460 A4 3462 A5 3464 A7 Alarm Backlight Main Backlight 1423 A3 1425 A5 1427 A7...
  • Page 20 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 12 - 1 12 - 1 EXPLODED VIEW DIAGRAM - CABINET (4x) SCREW LIST : M2x6 T2 x 6 T2 x 8 T2 x 10 T2.5 x 10 T3 x 6 (2x) T3 x 8 T3 x 10 T3 x 12 T3 x 16 T3 x 20...
  • Page 21: Mechanical Partslist

    CABINET-BOTTOM(for AJ3970/00 only) 3140 114 44170 CABINET-BOTTOM(for AJ3970/05 only) 3140 114 41730 CABINET - BOTTOM(for MCR220BK/17 only) 3140 118 33340 AC/DC ADAPTER(for AJ3970/00 only) 3140 118 33350 AC/DC ADAPTER(for AJ3970/05 only) 3140 118 33270 AC/DC ADAPTER(for MCR220BK/17 only) 3140 114 41590...
  • Page 22 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 13 - 1 ELECTRICAL PARTSLIST - COMBI BOARD - MISCELLANEOUS - - CAPACITORS - 1003 4822 240 10041 LOUDSPEAKER D77 8 OHM 2303 4822 124 40196 220µF 20% 16V 1004 4822 240 10041 LOUDSPEAKER D77 8 OHM 2304 5322 126 11583 10nF 10% X7R 50V...
  • Page 23 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 13 - 2 ELECTRICAL PARTSLIST - COMBI BOARD - CAPACITORS - - RESISTORS - 2415 2238 586 59812 100nF +80-20% Y5V 50V 3101 4822 100 20167 50K 30% LIN 0,1W 2416 4822 122 33741 10pF 10% NP0 50V 3102 4822 051 30683 68K 5% 0,062W...
  • Page 24 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 13 - 3 ELECTRICAL PARTSLIST - COMBI BOARD - RESISTORS - - RESISTORS - 3403 4822 051 30471 470R 5% 0,062W 3462 4822 051 30273 27K 5% 0,062W 3404 4822 051 30471 470R 5% 0,062W 3463 4822 051 30393 39K 5% 0,062W 3405 4822 051 30471...
  • Page 25 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 13 - 4 ELECTRICAL PARTSLIST - COMBI BOARD - RESISTORS - - DIODES - 3525 4822 051 30153 15K 5% 0,062W 6410 3198 010 53380 BZX79-B3V3 3526 4822 051 30153 15K 5% 0,062W 6413 4822 130 11397 BAS316 3527 4822 117 13632...
  • Page 26 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 13 - 5 ELECTRICAL PARTSLIST - CD BOARD (ICD01-AX) - MISCELLANEOUS - - CAPACITORS - 1801 4822 242 81865 CER. FLTR CST16,93MXW0C3 2847 4822 124 41584 100µF 20% 10V 1802 4822 265 11207 CONNECTOR 6P 2848 3198 017 34730 47nF 10% X7R 16V 1804 4822 265 11535...
  • Page 27 www.freeservicemanuals.info 10/11/2012 www.nostatech.nl 13 - 6 ELECTRICAL PARTSLIST - CD BOARD (ICD01-AX) - RESISTORS - - RESISTORS - 3846 4822 051 30471 470R 5% 0,062W 4815 4822 051 20008 0R JUMPER (0805) 3847 4822 117 12925 47K 1% 0,063W 4816 4822 051 30008 0R JUMPER (0603) 3848...

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Mcr220bk

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