Philips-MCM-285-Service-Manual(1) 电路图 维修手册.pdf

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1、Version 1.1 MCM285 3141 785 32741 Micro Hi-Fi System -/55/77/79 Published by LX 1016 Service Audio Subject to modification Copyright 2010 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 t

2、ransmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. CONTENTS Technical specification .1-2 Service measurement setup.1-3 Service aids .1-4 Instructions on CD playability .2-1. 2-2 Disassembly diagram. .3-1 Block diagram

3、.4-1 Wiring diagram .4-2 Main board Circuit diagram .5-1 Layout diagram .5-2.5-3 Key board Circuit diagram .6-1 Layout diagram .6-2.6-3 Exploded view diagram .7-1 Mechanical parts list .7-2 Electrical parts list.8-1.8-2 Revision list.9-1 RadioFans.CN 收音机爱 好者资料库 SPEAKERS 1-way Bass Reflex System Impe

4、dance. 8 Speaker diameter.4” Dimensions (w x h x d).14.6x23.6x18.5 (cm) GENERAL AC Power.110 127 / 220 240V; . 50/60 Hz Switchable Dimensions (w x h x d) . 14.6x23.6x23.9 (cm) Weight (with/without speakers) . .5.9 / 2.5 kg Specifications and external appearance are subject to change without notice.

5、AMPLIFIER Total output power . 25W (12.5W per channel) Signal-to-noise ratio. 62 dBA (IEC) Frequency response .63 16000 Hz, 3 dB CD PLAYER Frequency range. 63 16000 Hz Signal-to-noise ratio.65 dBA TUNER FM wave range .87.5 108 MHz MW wave range. 531 1602 kHz TECHNICAL SPECIFICATION 1 - 2 RadioFans.C

6、N 收音机爱 好者资料库 1-3 LF Generator e.g. PM5110 Recorder Use Universal Test Cassette CrO2SBC419 4822 397 30069 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion mete e.g. Sound Technology ST170 L R DUT or Universal Test Cassette FeSBC420 4822 397 30071 LEVEL METER e.g. Sennheiser UPM550

7、 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B L R DUT CD Use Audio Signal Disc (replaces test disc 3) SBC429 4822 397 30184 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT S/N and distortion meter e.g. Sound Technology ST1700B Frame aerial e.g. 7122 707

8、 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 250Hz) to eliminate hum (50Hz, 100Hz). RF Generator e.g. PM5326 Ri=50? Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltm

9、eter e.g. PM2534 DUT RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Ri=50? Tuner FM MEASUREMENT SETUP RadioFans.CN 收音机爱 好者资料库 1-4 SERVICE AIDS GBWARNING All ICs an

10、d many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set via a wrist wrap with resistance. Keep components and tools als

11、o at this potential. ESD CLASS 1 LASER PRODUCT GB Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified, be used Safety components are marked by the symbol !. Lead free Set remains closed! N Y Play a CD for at least 10 m

12、inutes Y playability ok ? N playability ok ? add Info for customer SET OK check playability N Y playability ok ? check playability check playability return set Customer complaint CD related problem fast lens cleaning 1 2 3 For flap loaders (= access to CD drive possible) cleaning method 4 is recomme

13、nded INSTRUCTIONS ON CD PLAYABILITY 2 - 1 Exchange CDM 1- 4 For description - see following pages 1 PLAYABILITY CHECK For sets which are compatible with CD-RW discs use CD-RW Printed Audio Disc.7104 099 96611 TR 3 (Fingerprint) TR 8 (600 Black dot) maximum at 01:00 playback of these two tracks witho

14、ut audible disturbance playing time for: Fingerprint10seconds Black dot from 00:50 to 01:10 jump forward/backward (search) within a reasonable time For all other sets use CD-DA SBC 444A.4822 397 30245 TR 14 (600 Black dot) maximum at 01:15 TR 19 (Fingerprint) TR 10 (1000 wedge) playback of all these

15、 tracks without audible disturbance playing time for: 1000 wedge10seconds Fingerprint10seconds Black dot from 01:05 to 01:25 jump forward/backward (search) within a reasonable time 2 CUSTOMER INFORMATION It is proposed to add an addendum sheet to the set which informs the customer that the set has b

16、een checked carefully - but no fault was found. The problem was obviously caused by a scratched, dirty or copy-protected CD. In case problems remain, the customer is requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in the addendum sheet. The final wording

17、in national language as well as the printing is under responsibility of the Regional Service Organizations. 4 LIQUID LENS CLEANING Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, cleaning must be done with a non-aggressive cleaning fluid. It is advise

18、d to use “Cleaning Solvent The actuator is a very precise mechanical component and may not be damaged in order to guarantee its full function. Clean the lens gently (dont press too hard) with a soft and clean cotton bud moistened with the special lens cleaner. The direction of cleaning must be in th

19、e way as indicated in the picture below. Before touching the lens it is advised to clean the surface of the lens by blowing clean air over it. This to avoid that little particles make scratches on the lens. INSTRUCTIONS ON CD PLAYABILITY 2 - 2 SET BLOCK DIAGRAM 4 - 14 - 1 SET WIRING DIAGRAM 4 - 24-

20、2 5 - 15 - 1 CIRCUIT DIAGRAM - MAIN BOARD 5 - 25 - 2 LAYOUT DIAGARM - MAIN BOARD COMPONENT SIDE VIEW 5 - 3 LAYOUT DIAGARM - MAIN BOARD COPPER SIDE VIEW 5 - 3 CIRCUIT DIAGRAM - KEY BOARD 6 - 16 - 1 LAYOUT DIAGARM - KEY BOARD COMPONENT SIDE VIEW 6 - 26 - 2 6 - 3 6 - 3 LAYOUT DIAGARM - KEY BOARD COPPER

21、 SIDE VIEW 11 12 13 14 15 16 17 18 22 26/27 30 29 25 28 EXPLODED VIEW DIAGRAM 7 - 17 - 1 7 - 2 MECHANICAL PARTSLIST 11996510015914MAIN FRONT CABINET 12996510015915VOLUME RING 13996510015916VOLUME KNOB 14996510015917FRONT BEDECK 15996510015918FRONT PC LENS 16996510015937LCD DISPLAY 17996510015938LCD

22、BRACKET 189965100064247671 LCD REFLECTOR 19996510015919RUBBER FOOT D11x3H 22996510010491CD MECHANISM SANYO DA11B3VF 23996510015920DOOR LOCK DL-328 (WITH LOCK) 24996510015921CD STAND GREY(SANY0 MECH) 25996510015922CD DOOR D THOMSON SPRAY SILVER 26996510015923CD UBBE CUSHION ED (CIBA) 27996510015924CD

23、 UBBE CUSHION BLUE (CIBA) 28996510015925SANYO CD CLAMPER PLASTIC D68m 29996510015926PH-MCM285 CD DUST COVER 309965100159277261N CD PICK UP DUSTCOVER 319940000047267831 GEAR (MODE:0.8) 329940000047277831 GEAR STAND (MODE:0.8) B! 996510017868TRANSF UL EML662272MT(for -/55/77) ACCESSORIES ACC! 99651001

24、5929AC CORD LINE -/77 ACC! 996510007654AC CORD LINE -/55 RC996510015928REMOTE SET MCS SE A996510017867SINGLE SPEAKER BOX L/R Note:Only these parts mentioned in the list are normal service parts. ACC! 996510004651AC CORD LINE -/79 B! 996510018718TRANSFORMER (for -/79) 8 - 1 ELECTRICAL PARTSLIST MAIN

25、BOARD ASSEMBLY ANT996510015906AM COIL 67:9T 4 LEADS H-COMB BAR994000003966FERRITE BAR D10XL60 C1105996510017866E CAP 25V+-20% 4700u CF101996500038854DISCRIMINATOR JT10.7MG-B CF102996510015911F, LT10.7MS3 CAIQIN (RED) CF103996500038852FILTER FM450AL (DOUBLE) CN80199651000475016P FFC CONN. GFN102-16S-

26、TS CN803996510015910SOCKET 6P PH=2mm D101996510013423CHIP TAPE DIODEIN4148 SMT1206 D102996510013423CHIP TAPE DIODEIN4148 SMT1206 D106996510006431ZENER DIODE+-5% 5V6 (TP) D107996500038827ZENER DIODE -5% 3V D1101996510015594DIODE 1N4001 50V/1A (EP) D1102996510015594DIODE 1N4001 50V/1A (EP) D1103996510

27、015594DIODE 1N4001 50V/1A (EP) D1104996510015594DIODE 1N4001 50V/1A (EP) D1105996510017864BRIDGE RECTIFIER KBL406 4A(EP) D2996510015594DIODE 1N4001 50V/1A (EP) D301996510010972DIODE 1N4148 (EP) (TP) D302996510010972DIODE 1N4148 (EP) (TP) D609996510010972DIODE 1N4148 (EP) (TP) D610996510010972DIODE 1

28、N4148 (EP) (TP) D612996510013423CHIP TAPE DIODEIN4148 SMT1206 D613996510010972DIODE 1N4148 (EP) (TP) D616996510010972DIODE 1N4148 (EP) (TP) D617996500038828ZENER DIODE -5% 3V9 D801996510010980IR LED WHITE DIA 5mm 5308IC-15 F1! 994000004782FUSE 50T D5X20 1.6A 250V(S.B.) F2! 996500038821FUSE 2A 250V (

29、VDE)(FAST BLOW) IC1996510015912IC LV23010V SSOP36 IC301994000004778IC TDA7269A-14W IC501996510015913IC 7313 (SOP)(ANGUS) IC801996510002298IC LC78692W (CD DSP) SQFP80 IC802996500038842IC LA6548NH (4 CH DRIVER) Q1996510002289NFET BUK7535-55A Q101996510017865CHIP TR PNP 8050D (SMD) (EP) Q2996510017876T

30、R NPN 8050D (TP) Q301994000003972CHIP TR MMBT9014C Q302994000003972CHIP TR MMBT9014C Q303994000004064POWER TR PNP KTA1046/P Q304994000004064POWER TR PNP KTA1046/P Q305994000004004 CHIP TR NPN 8050C Q306994000004004 CHIP TR NPN 8050C Q307994000003972CHIP TR MMBT9014C Q308994000003972CHIP TR MMBT9014C

31、 Q601994000004004 CHIP TR NPN 8050C Q606994000003972CHIP TR MMBT9014C Q607994000004005CHIP TR PNP 8550D Q608994000004005CHIP TR PNP 8550D Q610994000003972CHIP TR MMBT9014C ELECTRICAL PARTSLIST MAIN BOARD ASSEMBLY Q611994000003972CHIP TR MMBT9014C Q612996510003952TR 8550D Q613996510003952TR 8550D Q80

32、1994000003973CHIP TR MMBT9015C Q801994000004004 CHIP TR NPN 8050C Q802996500038840TR PNP 2SB764E-SSH-AE(TP) SP1994000004779SPEAKER TERMINAL 4P MSP-124V T101996510015907AM IFT YEL 10mm A49 T102996510015908AM OSC RED 10mm 2928 X101996510015909CRYSTAL JF7.200-134 (HC49U) X801996510002297C RESONR QZTT16

33、.93MX 3PINS ZD601994000004748ZENER DIODE+-5% 4V7 KEY BOARD ASSEMBLY IC701 996510035701 IC LC877696B-5AS5 IC702996510013449IC FT24C02 (EEPROM) (SOP8)(EP) IR601996510002274SENSOR AT136BV3 (36KHz) (3.3V) J602996510002273ST PHONES JACK 3.5mm TC38 J603996510002273ST PHONES JACK 3.5mm TC38 LED199651001590

34、3LED BLUE LA304B1PC-1A-02 SW630994000004792TACT SW 6X6MM H4.3 SW631994000004792TACT SW 6X6MM H4.3 SW632994000004792TACT SW 6X6MM H4.3 SW634994000004792TACT SW 6X6MM H4.3 SW636994000004792TACT SW 6X6MM H4.3 SW637994000004792TACT SW 6X6MM H4.3 SW638994000004792TACT SW 6X6MM H4.3 SW639994000004792TACT

35、SW 6X6MM H4.3 SW640994000004792TACT SW 6X6MM H4.3 SW641994000004792TACT SW 6X6MM H4.3 SW642994000004792TACT SW 6X6MM H4.3 SW651994000004792TACT SW 6X6MM H4.3 VR701996510002278ENCODER EC121102X2D-HA1-034 X602996510015904CRYSTAL SF-32.768-JU38106 10P X603996500038823CRYSTAL 8MHz(HC-49US) Note:Only these parts mentioned in the list are normal service parts. 8 - 2 REVISION LIST V * Initial Release V * P8-2 is revised.Changed IC701.(4/19/2010) Version 1.0 (3141 785 32740) Version 1.1 (3141 785 32741) 9-1