Philips-MCD-295-Service-Manual(1) 电路图 维修手册.pdf

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1、Version 1.2 MCD290,MCD295 3141 785 30662 Service Manual DVD Micro System all versions Published by LX 0628 Service Audio Printed in The Netherlands Subject to modification Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publication may

2、 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. Repair policy of PCBS.1-1 Technical specification.2-1 Service tools.2-1 Service measurement setup.2-2 Connections and

3、controls.3-1.3-4 Troubleshooting.3-5 Disassembly diagram.4-1.4-2 Service test program.5-1 Set block diagram.5-2 Set wiring diagram.5-3 DISPLAY BOARD circuit diagram .6-1 layout diagram.6-2 CASSETTE BOARD circuit diagram .7-1 layout diagram.7-2 MAIN BOARD(for MCD290) circuit diagram.8-1.8-2 layout di

4、agram.8-3.8-4 MAIN BOARD(for MCD295) circuit diagram.8-5.8-6 layout diagram.8-7.8-8 MPEG BOARD circuit diagram.9-1.9-3 layout diagram.9-4 Exploded view diagram.10-1 Mechanical partslist.10-2 Electrical partslist(for MCD290).11-1.11-2 Electrical partslist(for MCD295).11-3.11-4 TABLE OF CONTENTS CLASS

5、 1 LASER PRODUCT Revision list.12-1 RadioFans.CN 收音机爱 好者资料库 1 - 1 REPAIR POLICY OF PCBS VERSION VARIATIONS: Type /Versions: Features Board in used: MCD290/MCD295 Service policy * TIPS : C - Component Lever Repair. M - Module Lever Repair - Used C Feature diffrence RDS VOLTAGE SELECTOR ECO STANDBY -

6、DARK Type /Versions: C C C C C C C C /05/12/58 DISPLAY BOARD MAIN BOARD CASSETTE BOARD MEPG BOARDMMM /79/98 MCD290/MCD295 /05/12/58/79/98 C C C C C C MM RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 2 - 2 SERVICE MEASUREMENT Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT RF

7、Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Tuner SW 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). Ri=50 Aerial replac

8、ement Capacitor R=50 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 89001 Tuner AM (MW,LW) To avoid atmospheric interference all AM-measurements have to be carried out in a Faradays cage. RF Gene

9、rator e.g. PM5326 Ri=50 Low pass filter 22kHz L R LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B DUT CD Use Audio Signal Disc SBC429 4822 397 30184 (replaces test disc 3) L.P.F. = 13 th order filter 4822 395 30204 FM Antenna It is unnecessary

10、 to connect the FM pigtai l antenna since it is fixed to the main unit. Adjust the FM antenna for optimal FM stereo reception. Step 4:Connecting TV IMPORTANT! You only need to make one video connection from the following options, depending on the capabilities of your TV system. Connect the DVD syste

11、m directly to the TV. Using Video In jack (CVBS) 1Use the composite video cable (yellow) to connect the systems VIDEO jack to the video input jack (or labelled as A/V In, Video In, Composite or Baseband) on the TV set. 2To hear the sound of this DVD Player through your TV, use the audio cab les (whi

12、te/red-not supplied) to connect LINE OUT (L/R) jacks of the DVD Player to the cor responding AUDIO IN jacks on the TV. Connections Step 2:Connecting speakers Connect the speak er wires to the SPEAKERS terminals, right speaker to RIGHT and left speaker to LEFT, coloured (mar ked) wire to + and black

13、(unmarked) wire to -. Fully inser t the stripped por tion of the speaker wire into the terminal as shown . Notes: Ensure that the speaker cables are correctly connected. Improper connections may damage the system due to short-circuit. For optimal sound performance, use the supplied speakers. Do not

14、connect more than one speaker to any one pair of +/- speaker terminals. Do not connect speakers with an impedance lower than the speakers supplied. Please refer to the SPECIFICATIONS section of this manual. Step 3:Antenna connection MW Antenna Connect the supplied MW loop antenna to the MW AERIAL te

15、rminal. Adjust the position of the antenna for optimal reception. Position the antenna as far as possib le from a TV, VCR or other radiation source. Connections Step 1:Placing speakers Front speaker ( left ) Front speaker ( right ) VIEWING AREA Place the front left and right speakers at equal distan

16、ces from the TV set and at an angle of approximately 45 degrees from the listening position. Notes: To avoid magnetic interference, do not position the front speakers too close to your TV set. Allow adequate ventilation around the DVD System. IMPORTANT! The type plate is located at the rear of the s

17、ystem. Before connecting the AC power cord to the wall outlet, ensure that all other connections have been made. Never make or change any connections with the power switched on. The voltage selector located at the bottom of this system is preset at 220V-240V from the factory. For countries that oper

18、ate at 110V-127V, please adjust to 110V-127V before you switch on the system. To avoid overheating of the system, a safety circuit has been built in. Therefore, your system may switch to Standby mode automatically under extreme conditions. If this happens, let the system cool down before reusing it

19、(not available for all ve rsions). Speaker (right) Speaker (left) AC power cord FM wire antennaMW loop antenna 5 4 2 3 3 - 1 CONNECTION AND CONTROLS 3 - 2 Using an accessory RF modulator IMPORTANT! If your TV set only has a single Antenna In jack (or labelled as 75 ohm or RF In), you will need a RF

20、modulator in order to view the DVD playback via TV. See your electronics retailer or contact Philips for details on RF modulator availability and operations. 1Use the composite cable (yellow) to connect the systems VIDEO jack to the video input jack on the RF modulator . 2Use an RF coaxial cable (no

21、t supplied) to connect the RF modulator to your TVs RF jack. Connections Using S-Video In jack 1Use the S-Video cable (not supplied) to connect the systems S-VIDEO jack to the S-Video input jack (or labelled as Y/C or S-VHS) on the TV set. 2To hear the sound of this DVD Player through your TV, use t

22、he audio cables (white/red-not supplied) to connect LINE OUT (L/R) jacks of the DVD Player to the corresponding AUDI O IN jacks on the TV. AUDIO IN R L VIDEO IN TO TVANT IN CH3 CH4 RF coaxial cable to TV Back of RF Modulator (example only) Antenna or Cable TV signal Connections Step 5:Connecting the

23、 power cord IMPORTANT! Never make or change any connection with the power switched on. After ev erything is connected properly, plug in the AC power cord to the power outlet. Optional: Connecting additional equipment IMPORTANT! Some discs are copy-protected. You cannot record the disc through a VCR

24、or digital recording device. When making connections, make sure the colour of cables matches the colour of jacks. Always refer to the owners manual of the other equipment for complete connection and usage details. DIGITAL INC AUDIO INPUT AUDIO OUT L R AUDIO IN L R VIDEO IN A B D Viewing and listenin

25、g to the playback of other equipment A Connect the systems AUX IN (R/L) jacks to the AUDIO OUT jacks on the other audio/visual device (such as a TV, VCR, Laser Disc player or cassette deck). Before starting operation, press SOURCE on the front panel to select AUX or press AUX on the remote in order

26、to activate the input source . Using the VCR for recording DVDs B Connect one of the systems VIDEO OUT jacks to the corresponding VIDEO IN jack and LINE OUT (R/L) jacks to the AUDIO IN jacks on the VCR. This will allow you to make analogue stereo (two channel , right and left) recordings. Recording

27、(digital) C Connect the systems COAXIAL jack to the DIGIT AL IN jack on a digital recording device (such as DTS-Digital Theatre compatible, with Dolby Digital decoder). Before star ting oper ation, set the DIGITAL OU T according to the audio connection. (See DIGIT AL OUT. ) Connecting an active subw

28、oofer D Connect the DVD micro systems SUBWOOFER OUT jack to the AUDIO INPUT jack on an acti ve subwoofer (not supplied). CONNECTION AND CONTROLS 3 - 3 12 7 9 8 ! 0 % 5 4 3 6 DISPLAY/ST 2T H E A T H R E # $ 1 2 # 7 0 3 ) ( * 8 9 In DISC mode , to star t or interrupt playback. #VOL +/- adjusts the vol

29、ume upward/downward. adjusts the hours and minutes in clock/timer setting mode . switches the set timer ON or OFF. $REPEAT to repeat a track/disc . %SUBTITLE selects a subtitle language . SLEEP to set the sleep (auto-off) timer function. , for example). CONNECTION AND CONTROLS Controls Controls on t

30、he system 1STANDBY ON y switches the system to standby/on. 2iR sensor infrared sensor for remote control. 3CLOCK Standby mode * sets the system clock. Playback mode displays the system clock. 4PROGRAM DVD/VCD/CD/MP3-CD: enter s the program menu. Picture CD : during playback, to select a slide show m

31、ode . Tuner : progr ams preset r adio stations. 5DISPLAY/ST Disc: to select disc information display mode . FM: to set stereo or mono sound mode. 6Mode Selection STOP 9. In DISC mode , to stop playback or clear a program. PLAY/PAUSE 2; . In DISC mode , to star t or interrupt playback. PRESET/ Disc:

32、skips to the previous/next chapter/title/ track. Tuner : selects a preset radio station. TUNING 22/33 Tuner press to tune to a lower/higher radio frequency gradually. press and hold, then release the key to start automatic search f or a radio frequency downward/upward. Disc searches fast backward/f

33、orward in a disc . 7Display screen to view the current status of the system. 8SOURCE to select the respecti ve sound source : DISC TUNER, TAPE or AUX. 9LOUDNESS enables or disab les automatic loudness adjustment. 0DBB enables or disab les bass enhancement. !DSC selects different types of preset soun

34、d equalizer settings (CLASSIC, JAZZ, POP or ROCK). VOLUME adjusts the volume upward/downward. adjusts the hour s and minutes in clock/timer setting mode . in timer setting mode , switches the set timer ON or OFF. #n to connect a headphone . $OPENCLOSE3 to open or close the disc door. %Tape Deck Oper

35、ation RECORD.starts recording. PLAY 2 . starts playback. SEARCH / fast rewinds/winds the tape . STOPOPEN0 . stops tape playback/recording; opens the tape compartment. PAUSE . interrupts recording or playback. Controls on the remote control 1y switches the system on/off. 2Numeric Keypad (0-9) inputs

36、a track/title/chapter number of the disc. 3PROGRAM DVD/VCD/CD/MP3-CD: enter s the program menu. Picture CD : during playback, to select a slide show mode . Tuner : progr ams preset radio stations. 4 SOURCE to select the respecti ve sound source : DISC TUNER, TAPE or AUX. 5 SYSTEM MENU (disc mode onl

37、y) to enter or exit the system menu bar. 3 - 5 ProblemSolution The language for the sound or subtitle cannot be changed when playing a DVD. No image is output when a function is selected. Sound cannot be heard or is of poor quality Poor radio reception. Recording or playback cannot be made Left and

38、right sound outputs are reversed. The remote control does not function. The timer is not working The Clock/Timer setting is erased Multi-language sound or subtitle is not recorded on the DVD. Changing the language f or the sound or subtitle is prohibited on the DVD. Make sure the component is connec

39、ted cor rectly. Press the correct function button for the input source . Adjust the volume . Disconnect the headphones. Check that the speakers are connected correctly. Check if the stripped speaker wire is clamped. If the system is in pause , slow motion or fast forward/rev erse mode , press PLA Y/

40、PAUSE 2; to resume the normal play mode. Make sure the MP3-CD was recorded within 32- 256 kbps bit rate with sampling frequencies at 48 kHz, 44.1 kHz or 32 kHz. Ensure that the DTS disc also supports Dolby Digital output. If the signal is too weak, adjust the antenna or connect an external antenna f

41、or better reception. Increase the distance between the System and your TV set or VCR. Clean deck parts, see “Maintenance”. Use only NORMAL tape . Apply a piece of adhesive tape over the missing tab space. Check the speaker connections and location. Point the remote control at the remote control sens

42、or of the unit. Reduce the distance to the player. Remove any possible obstacles. Replace the batter ies with new ones. Check that the batteries are loaded correctly. Set the clock correctly. If recording is in progress, stop it Power has been interrupted or the power cord has been disconnected. Res

43、et the clock/timer. Troubleshooting WARNING Under no circumstances should you try to repair the system yourself, as this will invalidate the warranty. Do not open the system as there is a risk of electric shock. If a fault occurs, first check the points listed below before taking the system for repair. If you are unable to remedy a problem by following these hints, consult your dealer or Philips for help. ProblemSolution Troubleshooting No power. “NO DISC” is displayed. No picture. Distorted or poor picture. The aspect ratio of the screen cannot be changed eve