Philips-FWM-185-Service-Manual(1) 电路图 维修手册.pdf

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1、CLASS 1 LASER PRODUCT Copyright 2007 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 t

2、he prior permission of Philips. Published by SL0731 Service Audio Printed in The Netherlands Subject to modifi cation. GB 3141 785 31682 Mini System TABLE OF CONTENTS Page Specifi cations .1-2 Measurement Setup .1-3 Block Diagram .2 Wiring Diagram .3 Cassette Board & USB Board .4 Main & USB Board .5

3、 CD Board .6 AMP Board .7 Mechanical Exploded View & Parts List .8 Version 1.2 FWM185/all versions Revision List .9 Downloaded Free from http:/www.free-service- RadioFans.CN 收音机爱 好者资料库 1-2 USB PLAYER USB . 12Mb/s, V1.1 . support MP3 and WMA files Number of albums/folders .maximum 99 Number of tracks

4、/titles.maximum 400 SPEAKERS 2-way Bass Reflex System Impedance. 8 ? Woofer . 1x10 cm Tweeter. 1x5 cm Dimensions (w x h x d).21.5x34.9x16.2 (cm) GENERAL AC Power.220 230 V / 50 Hz Dimensions (w x h x d) .22x29.2x27.2 (cm) Weight (with/without speakers) . .approx. 4.9 / 2.3 kg Specifications and exte

5、rnal appearance are subject to change without notice. AMPLIFIER 1 KHz (Low channel - both channels driven) . 30 W per channel (8 ?) 10 KHz (High channel - both channels driven) . 30 W per channel (8 ?) Total output power.120 W Signal-to-noise ratio. ? 62 dBA (IEC) Frequency response .63 16000 Hz, 3

6、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 TAPE DECK Frequency response Normal tape (type I).125 8000 Hz (8 dB) Signal-to-noise ratio Normal tape (type I). 35 dBA Wow and flutter . ? 0.4% DIN SPECIFICATION Down

7、loaded Free from http:/www.free-service- RadioFans.CN 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 FeSBC4

8、20 4822 397 30071 LEVEL METER e.g. Sennheiser UPM550 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.

9、 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 250Hz) to eliminate hum (50Hz, 100Hz). RF Generator e.g. PM5326 Ri=5

10、0 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter 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 Downloaded

11、Free from http:/www.free-service- RadioFans.CN 收音机爱 好者资料库 1-4 Service Tools: Universal Torx driver holder .4822 395 91019 Torx bit T10 150mm .4822 395 50456 Torx driver set T6-T20 .4822 395 50145 Torx driver T10 extended .4822 395 50423 Compact Disc: SBC426/426A Test disc 5 + 5A .4822 397 30096 SBC4

12、42 Audio Burn-in test disc 1kHz .4822 397 30155 SBC429 Audio Signals disc .4822 397 30184 Dolby Pro-logic Test Disc .4822 395 10216 SERVICE AIDS GBWARNING All ICs and many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastic

13、ally. 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 also at this potential. ESD CLASS 1 LASER PRODUCT GB Safety regulations require that the set be restored to its original condition and tha

14、t parts which are identical with those specified, be used Safety components are marked by the symbol !. Lead free Downloaded Free from http:/www.free-service- Set remains closed! Standard repair procedure N Y Play a CD for at least 10 minutes Y playability ok ? N playability ok ? add Info for custom

15、er SET OK playability ok ? Y N check playability N Y playability ok ? check playability check playability EYE-Pattern ok ? N Y check EYE-Pattern replace CD Drive Laser current ok ? N Y check Laser current CD Drive offsets ok ? NY check CD Drive offsets clean the lens check playability return set Cus

16、tomer complaint CD related problem return set return set replace CD Drive return set replace CD Drive return set replace Signal Processor return set fast lens cleaning 1 2 3 4 5 6 7 For flap loaders (= access to CD drive possible) cleaning method 4 is recommended 1 - 7 For description - see followin

17、g pages INSTRUCTIONS ON CD PLAYABILITY 1-5 Downloaded Free from http:/www.free-service- 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 without audible

18、 disturbance playing time for: Fingerprint 10seconds 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 tracks w

19、ithout audible disturbance playing time for: 1000 wedge 10seconds Fingerprint 10seconds 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 been che

20、cked 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 in nati

21、onal language as well as the printing is under responsibility of the Regional Service Organizations. 3 FAST LENS CLEANING (dry brush) Use lens cleaning CD SBC AC300.9082 100 00043 Insert the lens cleaning CD, press PLAY and follow the voice guides instructions on the CD. 4 LIQUID LENS CLEANING Becau

22、se 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 advised to use “Cleaning Solvent B4-No2”, available with codenumber 4822 389 10026. The actuator is a very precise mechanical component and ma

23、y 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 the way as indicated in the picture below. Before touching the lens it is advised to cl

24、ean 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 1-6 Downloaded Free from http:/www.free-service- 5 EYE-PATTERN SIGNAL JITTER MEASUREMENT Measure the signal on the input of the Signal processor us

25、ing an analog oscilloscope. Please find the exact measuring point in your Service Manual. See below examples of the signal. Amplitude should read at least 700mVpp using SBC444A. good bad If the oscilloscope shows a signal like the bad one, and/or the amplitude decreases within 1 minute - the CD driv

26、e has to be replaced. 6 CD DRIVE LASER CURRENT MEASUREMENT The laser current can be measured as a voltage drop on a resistor. The resistor is marked in every Service Manual. The value depends on the type of CD drive. typical valuemost probably defect VAMxxxx: 150-230mV350mV MCDxx: 170-230mV300mV DA1

27、x: 210-250mV350mV DA2x: 175-200mV250mV Use SBC444A (CD-DA) for measurement. 7 CD DRIVE OFFSET MEASUREMENT The photodiodes of the CD-drive may have an offset. These offsets have to be compensated by the signal processor. High offsets can lead to poor playability of some CDs (skipping tracks). To meas

28、ure the offset values, start the Service Test Program - section “Focus Test” without a CD. The offsets can be measured with a DC Millivoltmeter directly on the connector (see drawing below). Pin numbering varies from drive to drive. The values from diode A-D should read 010mV. Diodes E and F are les

29、s critical. If one of the offsets is higher than 10mV the CD drive has to be replaced. Otherwise replace the Signal Processor. Sanyo DA12T3 CD Drive A A F C B E C D E VCC B VREF F D 9 10 11 12 13 14 15 16 1800 +5V_HF VrefCD10 A D E B C F GND8 E D A B C F Laser power control 100n 2878 470n 2876 3821

30、1R 1K 3823 2880 33p +5V BC807-40 7879 3817 47R 3820 4R7 47R 3819 1n 2879 2877 47u 1 8 4 7811-A LM358D 3 2 10K 3822 47R 3818 2841 100n 47n 2869 +5V_HF LASER DIODE U 250mV -Laser damaged ! 4,6V 3V 3,3V 3,9V 2V 0,17V 0,17V Sanyo DA12T3 HF-Amplifier D3 D2 D1 Drive detection 680R 3905 3903 3K3 BC847B 787

31、7 47n 2818 1K5 3902 5 7 4 2 1 6 3 64 8 9 10 11 470R 3893 +3.3V 2K2 3908 10K 3923 BC847B 7878 BC847B 7876 4n7 2813 3896 100R 220u 2885 2881 560p 47n 2887 560R 3901 2883 470n 2817 4u7 3n3 2814 3898 220R 3895 27K 470n 2884 +3.3V 3909 820R 3907 100R 3920 33K 3897 2882 82p 3K3 3904 2K7 3899 3906 470R +5V

32、_HF HFIN VrefCD10 100p 28152816 22n LDON to 3826,3827 VREF GE VDDA1 VRIN VSSA1 ISLICE LDON D1 D2 D3 D4 HFIN HFREF IREF CD_DA: 0V / CD_RW: 3V (A-D) 800mVpp TB = 0.5s/div EYE-PATTERN 1,8V 1,2V 2,4V 2,6V 0,65V INSTRUCTIONS ON CD PLAYABILITY 1-7 Downloaded Free from http:/www.free-service- 2-12-1 SET BL

33、OCK DIAGRAM Downloaded Free from http:/www.free-service- SET WIRING DIAGRAM 3-13-1 Downloaded Free from http:/www.free-service- 4-14-1 PCB LAYOUT - CASSETTE BOARD Downloaded Free from http:/www.free-service- 4-2 4-2 CIRCUIT DIAGRAM - CASSETTE BOARD Downloaded Free from http:/www.free-service- 5-15-1

34、 PCB LAYOUT - MAIN(MCU) & USB BOARD Downloaded Free from http:/www.free-service- 5-25-2 CIRCUIT DIAGRAM - MAIN(MCU) BOARD - TUNER PART Downloaded Free from http:/www.free-service- 5-3 5-3 CIRCUIT DIAGRAM - MAIN(MCU) & USB BOARD Downloaded Free from http:/www.free-service- 6-16-1 PCB LAYOUT - CD BOAR

35、D Downloaded Free from http:/www.free-service- 6-2 6-2 CIRCUIT DIAGRAM - CD BOARD Downloaded Free from http:/www.free-service- 7-1A7-1A PCB LAYOUT - AMP BOARD FOR VERSION /55/77/79 Downloaded Free from http:/www.free-service- PCB LAYOUT - AMP BOARD FOR VERSION /12/05 TOP VIEW 7-1B-17-1B-1 Downloaded

36、 Free from http:/www.free-service- PCB LAYOUT - AMP BOARD FOR VERSION /12/05 BOTTOM VIEW 7-1B-27-1B-2 Downloaded Free from http:/www.free-service- 7-2A 7-2A CIRCUIT DIAGRAM - AMP BOARD FOR VERSION /55/77/79/98 Downloaded Free from http:/www.free-service- CIRCUIT DIAGRAM - AMP BOARD FOR VERSION /12/0

37、5 7 - 2B7 - 2B Downloaded Free from http:/www.free-service- 53 55 43 56 52 51 45 49 48 44 43 41 38 42 40 28 29 27 26 25 23 22 24 21 20 19 18 17 16 15 14 12 13 11 9 10 8 7 6 5 4 3 2 1 32 31 30 34 33 39 38 35 36 37 45 47 50 54 46 SET MECHANICAL EXPLODED VIEW 8-18-1 Downloaded Free from http:/www.free-

38、service- MECHANICAL & ACCESSORIES PARTS LIST 1996510002247CASS KEY DOOR56 996510002240 TOP COVER 1 996510004643CASS KEY DOOR /77/79/98 A994000004736SLIDE SWITCH (SSV-12-8700S) 2996510002263CASSETTE KEYS DOOR FOOTB 996500038819CD MECHANISM SANYO DA11VF 3996510002265CASS KEYS DOOR SPRINGC 996510002243

39、REMOTE RECEIVER LENS 4996510002246CASS DOORD 996510004639FWM185 SPEAKER 8R 30W RIGHT 4 996510004642CASS DOOR /77/79/98 E 996510006807SPEAKER (8R 30W) -L /98 5996510002255TUNING KNOBF 996510004640SPEAKER BOX ASSY 8R 30W -L 6996510002254VOLUME KNOB CHROMEG996510002238SPEAKER BOX ASSY 8R 30W 7996510002

40、248VOLUME RING SPRAY SILH!996510004702 APP AC CORD SET W/K-1004 /77 8996510002244FRONT LENS I!996510002304 AC CORD 1650mm /12/55/98 10996510002245CD DOORJ!996510002409 BS APP AC CORD SET /05 10 996510004641FWM185 CD DOOR /77/79/98 K!996510004651 SAA APP AC CORD L1700mm /79 13996510002258OPEN/CLOSE K

41、NOBL 996510002306REMOTE HANDSET 14996510002257STANDBY KNOBM996510006810AM LOOP ANTENNA 14 996510004644STANDBY KNOB /77/79/98 15996510002260STANDBY LIGHT GUIDE BKT 17996510002261TUNING SHAFT 18996510002259TUNING SHAFT BRACKET 25996510002277TUNING GEAR 26996510002307LOADER BRACKET 27996500038820CD LOA

42、DER WXD-8210 (COMPLETED) 28996510002242LOOP ANT COVER 30996510002266CASSETTE DOOR SPRING 31996510002239FRONT CAB 32996510002267CASS BRACKET 34996510002249STOP KNOB 34996510002250PLAY KNOB 34996510002251REC KNOB 34996510002252F.FWD KNOB 34996510002253REW KNOB 34996510002256PAUSE KNOB 35994000004719CA

43、SS HOLDER 36994000004734CASS DECK CS-21SC-820T 37994000004726DAMPER GEAR (MODE:0.8) 38996510002262PU RUBBER FOOT 39994000004727GEAR STAND (MODE:0.8) 40996510002269CASSETTE BOARD 41996510002305BASE CABINET 42996510002268SCREEN COVERNote: Only these parts mentioned in the list are 48 !996510002303TRANSFORM VDE-STD 230V /05/12 normal service parts. 48 !996510002421TRANSFORMER,VDE-STD,EI-66 /55/77/98 48 !996510004650 TRANSFORMER EML-2183ST /79 55996510002241REAR CAB /05/12/77 55996510002420 REAR CAB /55 55996510006808RE