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

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1、FWD185 / 79 / 94 / 98 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 0842 by DB Service Audio Printed in The Netherlands Subject to modification DVD Mini-HiFi System Version 1.3 TABLE OF CONTENTS Page Location of PC Boards.1-5 Versions Variation & Package .1-5 Specifications.1-6 Service news letter.1-1.1-4 Repair Instructions

3、.2 Disassembly Instructions & Service positions .3 Block & Wiring Diagram .4 Control Board .5 Main Board.6 Power Board .7 Mechanical Exploded View & Parts. 9 Service Manual Service ?Service ?Service ? 3141 785 31873 Service partlist.10 F actory partlist.11 RadioFans.CN 收音机爱 好者资料库 Service Newsletter

4、2002 BCU Audio1/4 For internal use onlyPHILIPS ISSUE SNL2002.09 (02-12-06) Published by: Service Department Audio BUSINESS CREATION UNIT AUDIO General Information This special edition contains instructions on CD-applications with playability problems (i.e. skipping tracks).The information shows how

5、to check the playability of the set, how to clean the lens, and how to measure if some important drive parameters like jitter, laser current and offset values are (still) within the specification. Background for this information are extensive analyses on replaced CD-drives. It has been found that a

6、lot of replaced drives were not defective at all, respectively were replaced for the wrong reason. We are convinced that the procedures on the next pages will help to reduce the number of erroneously replaced drives drastically and request you to deploy the instructions to the workshops urgently. SE

7、RVICE NEWSLETTER 1-1 RadioFans.CN 收音机爱 好者资料库 Service Newsletter 2002 BCU Audio2/4 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 customer SET OK playability ok ? Y N check playability N Y playability ok ? check p

8、layability 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 Customer complaint CD related problem return set return set replace CD Drive ret

9、urn 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 following pages 1-2 RadioFans.CN 收音机爱 好者资料库 Service Newsletter 2002 BCU Audio3/4 1 PL

10、AYABILITY 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 disturbance playing time for: Fingerprint 10seconds Black dot from 00:50 to 01:10 jump forw

11、ard/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 without audible disturbance playing time for: 1000 wedge 10seconds Fingerprint 10seconds Blac

12、k 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 checked carefully - but no fault was found. The problem was obviously caused by a scratched, di

13、rty 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 national language as well as the printing is under responsibility of the Regional Service Organi

14、zations. 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 Because the material of the lens is synthetic and coated with a special anti-reflectivity layer,

15、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 may not be damaged in order to guarantee its full function. Clean the lens gently (dont press

16、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 clean the surface of the lens by blowing clean air over it. This to avoid that little particle

17、s make scratches on the lens. 1-3 Service Newsletter 2002 BCU Audio4/4 5 EYE-PATTERN SIGNAL JITTER MEASUREMENT Measure the signal on the input of the Signal processor using an analog oscilloscope. Please find the exact measuring point in your Service Manual. See below examples of the signal. Amplitu

18、de 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 drive has to be replaced. 6 CD DRIVE LASER CURRENT MEASUREMENT The laser current can be measured as a voltage drop on a resistor. The r

19、esistor 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 DA1x: 210-250mV350mV DA2x: 175-200mV250mV Use SBC444A (CD-DA) for measurement. 7 CD DRIVE OFFSET MEASUREMENT The photodiodes of the CD

20、-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 measure the offset values, start the Service Test Program - section “Focus Test” without a CD. The offsets can be measured with a DC Mi

21、llivoltmeter 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 less critical. If one of the offsets is higher than 10mV the CD drive has to be replaced. Otherwise replace the Signal Processor. Sany

22、o 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 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 10

23、0n 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 7877 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 28

24、85 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_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 /

25、CD_RW: 3V (A-D) 800mVpp TB = 0.5s/div EYE-PATTERN 1,8V 1,2V 2,4V 2,6V 0,65V 1-4 LOCATION OF PCB BOARDS 1-5 MAIN PCB CONTROL CPB TUNER POWER PCB USB PCB VERSION VARIATIONS: Type /Versions: Features & Board in used: FWD185 Service policy& MAIN BOARD TUNER BOARD CONTROL BOARD POWER BOARD USB BOARD * TI

26、PS : C - Component Lever Repair. M - Module Lever Repair - Used /98 Feature diffrence C M /94 /79 C C C C M C C C C M C C C 1-6 AMPLIFIER SECTION Output power . 1800 W PMPO Stereo mode . 2 x 50 W RMS Frequency Response . 50 Hz - 18 kHz / 3 dB Signal-to-Noise Ratio . 62dB (A-WEIGHED) Input Sensitivit

27、y AUX In . . 600 mV Output Sensitivity Headphone .25 mV + 1dB Line Out . (CD mode)2 + 0.2 V TUNER SECTION Tuning Range . . FM 87.5 108 MHz ( 50 kHz steps) . MW 531 1602 kHz (9 kHz steps) .MW 530 1700 kHz (10 kHz steps) Signal-to-Noise Ratio . .FM 50 dB . MW 35 dB TAPE SECTION Frequency Response Norm

28、al tape . . 80 12500 Hz ( +8 dB) Signal-to-Noise Ratio Normal tape . . 45 dBA JIS and WTD . 0.3% DVD SECTION Laser Type . . Semiconductor Disc Diameter . . 12cm / 8cm Video Decoding . MPEG-2 / MPEG-1/ Divx 3/4/5/6, Ultra Video DAC . . 12 Bits Signal System . . PAL / NTSC Video Format . . 4:3 / 16:9

29、Video S/N . 56 dB (minimum) Composite Video Output . 1.0 Vp-p, 75 S-Video Output . . Y - 1.0 Vp-p, 75 . C - 0.286 Vp-p, 75 Audio DAC . . 24 Bits / 96 kHz Frequency Response . 4 Hz - 20 kHz (44.1kHz) . 4 Hz - 44 kHz (48kHz) MAIN UNIT Power Supply Rating .110 - 240 V . 50/60HZ Switchable Power Consump

30、tion Active .50 W Standby .10 W Dimensions (w d h) . 265 335 310 (mm) Weight .3.91 kg Packaging Dimensions (w d h) . . . 569 x497 x 413(mm) Gross weight . 13.1g SPEAKERS Front speakers System .2-way, Bass refl ex Impedance .8 Speaker drivers .13 cm woofer, .5cm tweeter Frequency response .55 Hz 20 k

31、Hz Dimensions (w d h) . .222 223 310 (mm) Weight .3.02kg/each Specifi cations subject to change without prior notice SPECIFICATION 2 - 12 - 1 System , Region Code , etc. Setting Produre 1)System Reset a) press “Setup “ buttom on R/C,TV will show the preference page b) select the menu using the and o

32、n R/C c) go preference page to do sysytem reset 3)Version Control Change a) In open model, press “1“ “5“ “9“ on R/C b) press “ok” buttom to comfi rm c) TV will show message as below: 2)Region Code Change a) press the “stop” buttom on R/C in open model c) press”7” “3“ “4“ “4“ “6“ “6“ on R/C, then, TV

33、 will show the current region code. 3 APAC 4 Australia ,NZ , Latam Current model 185-98 Mtk Ver:07.04.17.01 region : 3 Mcu Ver:1.28 Servo: 6A.52.00.00 8032: 05.00.06.05 RISC: 05.00.06.05 IF current model does not match you set use down arrow key on the remote to change 4)Password Change a) press “Se

34、tup “ buttom on R/C,TV show the preference page b) select the menu using the and on R/C c) go preference page select “password“ to change * 000000 is default password supplied. 5)Check on the Sofeware Version a)open the CD Door b) press “display“ buttom on R/C c) TV will show the version on screen 6

35、)Upgrading new sofeware a)open the CD Door,then insert the CD-R program disc b)close the DOOR c) TV will show: “loading“ pop message“upgrading“ “writing” about 2 minutes “done “ * the latest upgraded is in version VER 07.04.17.01 CAUTION! This information is confi dencial and may not be distributed

36、.Only a qualifi ed service person should reprogram the region code. 2 - 22 - 2 REPAIR INSTRUSTRATOR 3 - 13 - 1 f gure 3 DISASSEMBLY INSTRUCTIONS Dismantling the DVD Module 1) Loosen 2 screws ”A” at both sides as shown in f gure 1 & remove 6 screws ”B” as shown in f gure 2 to remove top & side cover

37、f gure 1 f gure4 f gure 5 f gure 2 A B 2) Push the gear slowly towards the front as shown in f gure 3 until the DVD tray move out of the front cabint. now the DVD tray is disengaged and can be pulled out completely. 3) Remove the cover Tray as shown in f gure 4. 4) Loosen the 4 screw ”C” as shown in

38、 f gure 5 to remove DVD loader bracket 5) Loosen the 4 screws ”D” at DVD loader as shown in f gure 6 f gure 6 D C Dismantling the Power Board 1) Loosen 4 screws “D“ on the top of board as shown in f gure 7 E f gure 7 3 - 23 - 2 f gure 8 f gure 10 f gure 9 Dismantling the Main Board 1) Loosen 7 screws “F“ at back pa