Philips-MAS-139-Service-Manual(1) 电路图 维修手册.pdf
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1、Version 1.1 FWC139, MAS139 3141 785 30921 Mini System all versions Published by YT 0610 Service Audio. Subject to modification Copyright 2006 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publication may be reproduced, stored in a retrieval system
2、or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. Handling chip components . 1-1 Service tools . 1-1 Leadfree and safety information . 1-2 Technical specification . 2-1 Service measurement setup . 2-2 Connections
3、and controls .3-1.3-2 Disassembly diagram .4-1.4-2 Block diagram . 5-1 Wiring diagram . 5-2 Key / LCD board circuit diagram . 6-1 layout diagram . 6-2 Cassette board circuit diagram . 7-1 layout diagram . 7-2 Main board circuit diagram (Tuner & CD) . 8-1 circuit diagram (Power & Supply) . 8-2 layout
4、 diagram (main board) .8-3.8-4 layout diagram (supply board) .8-5.8-6 Exploded view diagram . 9-1 Accessories and Mechanical partslist . 9-2 Electrical partslist .10-1.10-2 TABLE OF CONTENTS RadioFans.CN 收音机爱 好者资料库 1 - 1 HANDLING CHIP COMPONENTS RadioFans.CN 收音机爱 好者资料库 1 - 2 RadioFans.CN 收音机爱 好者资料库
5、2 - 1 GENERAL: Mains voltage : 110-127/220-240V Switchable 220-230V (MAS139/77 only) Mains frequency : 50/60 Hz Power consumption : 50W max. 5W at standby Clock accuracy : 4 seconds per day Dimension center unit : 220 x 292 x 285 mm Dimension speaker : 190 x 292 x 182 mm Weight (with/without speaker
6、 box) : 4.9 /2.3 Kgs TUNER: FM Tuning range : 87.5 108 MHz IF Frequency : 10.7 MHz ? 20kHz Aerial input : 75 ? pigtail wire Sensitivity at 26sb S/N : 25 dB IF rejection : 75 dB Image rejection : 25 dB Distortion : 18 dB MW Tuning range 9 kHz grid : 531 1602 kHz 10 kHz grid : 530 1700 kHz IF Frequenc
7、y : 455 kHz ? 1kHz Aerial input : Loop antenna Sensitivity at 26sb S/N : 18 dB IF rejection : 45 dB Image rejection : 28 dB Distortion : 5% AMPLIFIER: Output power : 2 x 10 W RMS Speaker impedance : 8 ohm Frequency response Within ? 3dB : 63Hz 16 kHz Hyper bass sound ON : 10dB ? 3dB at 80Hz Digital
8、sound control : Rock/Pop/Jazz/Classic Headphone output : 32 mW ? 2dB at 32 ? CASSETTE RECORDER: Number of tracks : 2 x 2 stereo Tape speed : 4.76 cm/sec +2.5/-1.5% Wow and flutter : 0.4% DIN Fast-wind/rewind time : 35 dB with type 1 tape COMPACT DISC: Number of programming track : 32 Frequency respo
9、nse Within ? 1.5 dB : 20 Hz 20 kHz Signal/Noise ratio : 50 dB/A-weighted Distortion at 1 kHz : 25 dB Support disc format : Disc format ISO9660, Single session CD Max. albums: 25, Max. titles: 255 Bit rate: 128 bits (recommended) SPECIFICATION 2 - 2 SERVICE MEASUREMENT Bandpass 250Hz-15kHz e.g. 7122
10、707 48001 LF Voltmeter e.g. PM2534 DUT RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Tuner FW Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Ri=50 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2
11、534 DUT S/N and distortion meter e.g. Sound Technology ST1700B Frame aerial e.g. 7122 707 89001 Tuner AM (MW,LW) To avoid atmospheric interference all AM-measurements have to be carried out in a Faradays cage. Use a bandpass filter (or at least a high pass filter with 250kHz) to eliminate hum (50Hz,
12、 100Hz). RF Generator e.g. PM5326 Ri=50 L R LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B DUT CDRECORDER Use Audio Signal Disc SBC429 4822 397 30184 (replaces test disc 3) Use Universal Test Cassette Fe SBC420 4822 397 30071 L R LEVEL METER
13、e.g. Sennheiser UPM550 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B DUT LF Generator e.g. PM5110 Ri=50 3 - 1 CONNECTION AND CONTROLS ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
14、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?n ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 3 - 2 CONNECTION AND CONTROLS ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?+?-? ? ? ? ? ? ? ? ? ?+?-? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? xx4 - 1 DISASSEMBLY DIADR
15、AMS A A. Remove CD Door B2 B3 B1 B. Remove Top Cabinet B1: Remove screws SP 3x6 - 6 pcs. B2: Remove screws MP 3x10 - 4 pcs. B3: Remove screws MP 3x10 - 4 pcs. 4 - 2 DISASSEMBLY DIADRAMS 4 - 2 C1 C2 C3 C. Remove CD Loader C1: Remove screws SP 3x8 - 2 pcs. C2: Remove screws SP 3x15 - 2 pcs. C3: Remove
16、 screws SP 3x10 - 1 pcs. D1 D. Remove Bottom Cabinet D1: Remove screws SP 3x10 - 2 pcs. E1 E. Remove Main PCB Assy D1: Remove screws SP 3x10 - 2 pcs. F3 F2 F1 F. Remove Key Board Assembly F1: Remove screws SP 3x8 - 10 pcs. F2: Remove screws SP 3x8 - 2 pcs. F3: Remove screws SP 3x8 - 4 pcs. 5 - 1 5 -
17、 1 SET BLOCK DIAGRAM 5 - 25 - 2 ? ? ? ? ? SET WIRING DIAGRAM 6 - 16 - 1 CIRCUIT DIAGRAM - KEY / LCD BOARD 6 - 26 - 2 LAYOUT DIAGRAM - KEY / LCD BOARD 7 - 17 - 1 CIRCUIT DIAGRAM - CASSETTE BOARD 7 - 2 LAYOUT DIAGRAM - CASSETTE BOARD 7 - 2 8 - 18 - 1 CIRCUIT DIAGRAM - TUNER & CD PART 8 - 28 - 2 CIRCUI
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