Philips-MCV-250-Service-Manual(1) 电路图 维修手册.pdf

version 1.0 MCV250 3141 785 30080 Service Manual VCD Micro System all versions Published by LX 0438 Service Audio Printed in The Netherlands Subject to modification Copyright 2004 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 the prior permission of Philips. Handling chip components .1-1 Technical specification.2-1 Service tools.2-1 Service measurement setup.2-2 Connections and controls.3-1.3-2 Instructions for uses .3-3.3-5 Disassembly diagram .4-1 Set block diagram.5-1 Set wiring diagram.5-2 DISPLAY BOARD circuit diagram .6-1 layout diagram.6-2 KEY BOARD If your system is equipped with a Voltage Selector, set the VOLTAGE SELECTOR to the local power line voltage. All other connections have been made. WARNING! For optimal performance, use only the original power cable. Never make or change any connections with the power switched on. 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 (not available for all versions). Speaker (right) Speaker (left) MW loop antenna FM wire antenna IN Television L R IN - L + + R - Pr/CrPb/CbY S-VIDEO OUTVIDEO OUTDIGITAL OUT AUX inRL LINE OUT SUBWOOFER OUT FM aerial 75 SPEAKER 8 COMPONENT VIDEO OUT AM aerial AC power cord Cr Cb Y B A 220- 240V 110- 127V BAntennas Connection Connect the supplied MW loop antenna and FM antenna to the respective terminals. Adjust the position of the antenna for optimal reception. MW Antenna 220- 240V 110- 127V A Not for all versions or Built-in FM wire antenna ISDBBDSC REPEATSHUFFLEREPEAT A-B MIX SEL ALBUMALBUM DISPLAY OSD PBCRETURNDIGEST GOTORESUMESLOW AUDIO/VOCAL CLOCK SETTIMERSLEEPMUTE VCD/CDTUNERTAPEAUX ECHO KEYPROG ( ) + = # 7 6 fi fl ! 5 0 CONNECTION AND CONTROLS 3 - 2 Controls (main sets illustration on page 3 the CD door is opened. the disc has reached the end. you select another source: TAPE, TUNER or AUX. For MP3-CD only Load a MP-3 music disc on the disc tray. The total album number and total title/ track number 18 120 will be displayed. MP3, ALBUM and TRACK will be shown. Notes: To ensure good system performance, wait until the disc is completely read before proceeding. For MP3-CD, the disc reading time may exceed 10 seconds due to the large number of songs and different formats compiled in one disc. Selecting a different track Press 4 / once or repeatedly until the desired track number appears in the display. Press digit 0-9 on the remote control to select the desired track.(numbers consisting more than 2 figures must be keyed in within 2 seconds). For MP3-CD only To select a desired Album Press 4 or 3 repeatedly until the desired Album appears on the display. ALBUM and “0XX 120” will be displayed. To select a desired Title/ Track Press 4 / repeatedly until the desired Title appears on the display. Use the digital keys on the remote control to select the track. TRACK and “018 XXX” will be displayed. Finding a passage within a track To search for a particular passage during playback: 1Press and hold 4 / .(CD only) 2When you recognise the passage you want, release 4 / . Normal playback continues. Note: During a disc programme, searching is only possible within the same track. For VCD only Press and hold 4 / to select a different search speed and release the button until the desired rewind or forward speed is shown on the display or the TV. REWINDX1; REWINDX2; REWINDX3 or REWINDX4 will be displayed on the TV screen when you select a fast rewind search. FORWARDX1; FORWARDX2; FORWARDX3 or FORWARDX4” will be displayed on the TV screen when you select a fast forward search. Normal playback will begin at the end of the fast rewinding or forwarding of the selected track. Playback returns to normal when PLAY is pressed or when a new track is selected. Different play modes: SHUFFLE and REPEAT You can select and change the various play modes before or during playback. SHUFFLE .tracks of the entire disc are played in random order SHUFFLE REP ALLrepeats the entire disc continuously in random order REP ALL .repeats the entire disc/ program REP .plays the current track repeatedly Digest This feature allows you to scan through a VCD for a quick review. PBC mode must be switched off. In the stop mode 1Press DIGEST on the remote control. The first 6 seconds of each track are played. 2Press digit 0 9 on the remote control to play the desired tracks. Press 4 / to view the previous or next page for additional information. During playback 1Press DIGEST on the remote control. The current track of the selected disc will be divided into 9 parts and displayed on the TV screen. 2Press digit 0 9 on the remote control to play from the desired position. 3Press 4 / to digest the previous or next track. To exit the DIGEST mode Press DIGEST again. Press on the remote control. Press 9 on the remote control. A-B Repeat This feature is also applicable to audio CD (except MP3-CD). To play a certain scene or passage of the disc repeatedly: 1Press REPEAT A- B on the remote control during playback to mark the start of the chosen scene or passage. REPEAT A appears on the TV screen. REPEAT A-B flashes on the display. 2Press REPEAT A- B again to mark the end of the chosen scene or passage. REPEAT AB appears on the display. The selected scene or passage is played repeatedly. 3Press REPEAT A- B once more to return to normal playback. REPEAT AB CANCEL appears on the display. Notes: You can also cancel the A-B Repeat by pressing 4 / . You can set the A-B mark within the same track. If the track is completed before you set the end point, REPEAT A will disappear at the end of the track and REPEAT AB CANCEL will appear on the TV screen. GOTO 1Press GOTO on the remoto control. “GOTO-: -” appears on the TV screen. 2Press digit 0 9 on the remoto control to key in the disc time from which you want the disc to begin. Notes: Switch off PBC before selecting GOTO. Resume In the stop mode, press RESUME on the remote control to start playback again from where you have stopped. Note: The resume information is lost if the disc tray is opened, the source is changed or the system is disconnected from the power supply. Resume is not available when PBC mode is switched on. For VCD, it may take more than 20 seconds to resume playback due to the large number or size of tracks. VIDEO CD following display on the TV screen. Below is an example of the OSD message. Track playing time Track remaining playing time Total remaining playing time OFF SINGLE REMAIN XXMM:SS XX is the current track. MM is in minutes. SS is in seconds. Note: You can also view the information from a MP3-CD or normal CD. Playing a Video CD with PBC VCD with PBC (Playback Control) will be indicated on the display of the set as soon as the disc is inserted. PBC is a predefined play sequence stored in the VCD. 1Switch on the TV, insert a VCD with PBC and press to start playback. 2MENU appears on the TV screen. If the menu consists of a list of titles, you can select a sequence directly Press Digits 0-9 on the remote control to select your choice. The VCD starts to play in the selected sequence automatically. Note: If a menu consists of more than one page, press 4 / to go through the pages. Switching off PBC Press PBC on the remote control. “PBC OFF” appears on the TV screen. Notes: The programme mode is not available whenever the PBC mode is switched on. The menu structure depends on the information stored on the VCD. Please refer to the information supplied with the disc. PBC will be set to OFF if 9 is pressed. To play the same VCD with PBC on, please press PBC on the remote control again. Return Press RETURN to return to the previous VCD disc MENU level. PBC mode must be switched on. VIDEO CD Adjusting the TV System Before viewing the Video CD, ensure that the set is switched to corresponding PAL or NTSC system of your TV set (except Multisystem TV). Press and hold VCD/ CD on the remote control for more than 3 seconds to switch between PAL or NTSC TV system. OSD On Screen Display If you insert a VCD/ CD/ MP3 disc, your TV screen will serve as an additional display for messages (e.g. PLAY, STOP), and information stored on the VCD. Press DISPLAY (OSD) on the remote control repeatedly to switch on or off the On Screen Display. When OSD is switched ON; you can see the ISDBBDSC REPEATSHUFFLEREPEAT A-B MIX SEL ALBUMALBUM DISPLAY OSD PBCRETURNDIGEST GOTORESUMESLOW AUDIO/VOCAL CLOCK SETTIMERSLEEPMUTE VCD/CDTUNERTAPEAUX ECHO KEYPROG VCD/CDTUNER CD/VCD/MP3-CD Operation 1To select your play mode, press the REPEAT or SHUFFLE on the remote control before or during playback until the display shows the desired function. (SHUFFLE, REP, REP ALL) 2Press to start playback if in the STOP position. 3To return to normal playback, press REPEAT or SHUFFLE until the various SHUFFLE / REPEAT modes are no longer displayed. You can also press STOP 9 to cancel your play mode. Text display and ID3 Text In CD mode Press DISPLAY repeatedly to see the following information. Track number and elapsed play time of current track. Remaining play time of current track. Total number of tracks played and total played-back time. Total remaining number of tracks and total remaining play time. In MP3-CD mode This feature is used to display the title and album name for MP3-CD. Press DISPLAY repeatedly to display the title or album name and ID3 Text. Notes: Album No., Title No. opening the CD compartment; change to other source Playing a mixed mode disc This set can play a mixed mode disc. mixture of audio CD and MP3-CD mixture of other combination may not be operated normally. 1As default, audio CD tracks will be read first. 2Press MIX/SEL (on the remote control) repeatedly to select other disc modes. MP3-CD: MP3 is displayed. TV screen, MP3 menu is displayed. Note : For protected CDs, “MIX CD-DA” is displayed on your TV screen even if the disc does not have other format. The MIX/SEL normal functions are not available for protected CDs. INSTRUCTIONS FOR USE 3 - 4 Slow 1Press SLOW on the remote control to watch a VCD at a slower speed. There are 4 types of slow modes to select. The sound is muted. On TV screen, “SLOW 1/2”, “SLOW 1/4”, “SLOW 1/8”, SLOW 1/16 or PLAY is displayed. 2To resume playback at normal speed, press . Microphone Mixing Connect microphones (not supplied) to the system to sing along with the music source. 1Connect microphones to MIC jack. Before connecting the microphone, set the microphone level with VOL to the lower level to prevent howling sound by turning the MIC VOL knob. 2Select VCD/CD to start playback. Press ECHO to select MIC ON. 3Adjust the volume level of the source with VOLUME /+ control. 4Start singing or talking through the microphone. 5Press KEY to select key tone if necessary. Notes: Keep the microphones away from the speakers to prevent howling. Microphone mixing only available in VCD mode. Vocal This feature allows you to fade out the original vocal from a karaoke VCD. This feature is used together with Echo mode. You can also use it to select the different audio modes. Pressing VOCAL on the remote control repeatedly allows you to select the following modes. STEREO VOCALL-VOCAL R MONO L MONO R STEREO VOCAL LEFT/RIGHT - fade out the original vocal for specially recorded karaoke discs only (press ECHO to select MIC ON) STEREO same effect as the original recorded disc. MONO L/R select the language on a bilingual VCD. VIDEO CD Ensure that the MIC mode is switched on when pressing VOCAL to fade out the original vocal during STEREO VOCAL L/R mode. Key Control This feature allows you to change the key tone of your vocal range. Press KEY on the remote control. -KEY SHIFT+ appears on the TV screen. Press VOLUME /+ to decrease or increase the vocal key level between -6 and +6. Echo This feature allows you to add echo while singing or talking through a microphone. Press ECHO on the remote control -ECHO DELAY+ appears on the TV screen. Press VOLUME /+ to decrease or increase the echo level. Tape Operation/Recording Tape playback 1Select TAPE source. The display shows “TAPETAPETAPETAPETAPE” briefly. 2Press OPEN to open the tape door. 3Insert a recorded tape and close the tape door. Load the tape with the open side downward and the full spool to the left. 4Press to start playback. To stop playback Press . To reset the tape counter display In stop mode, press once. Rewinding / Fast forwarding 1Stop playback, press S or . The tape will stop automatically at the end of rewinding or fast forwarding. During fast winding, you can monitor the tape message with the tape counter. 2Press to stop rewinding or fast forwarding. Note: During rewinding or fast forwarding of a tape, it is also possible to select another source (CD or TUNER, for example). General information on recording For recording, use only NORMAL (IEC type I) tapes on which the tabs have not yet been broken. This deck is not suitable for recording on METAL (IEC IV) type tapes. The best recording level is set automatically. Altering the VOLUME, INCREDIBLE SURROUND or DBB will not affect the recording in progress. At the very beginning and end of the tape, no recording will take place during the 7 seconds when the leader tape passes the recorder heads. To protect a tape from accidental erasure, have the tape in front of you and break out the left tab. Recording on this side is no longer possible. If, however, you wish to record over this side again, cover the tabs with a piece of adhesive tape. IMPORTANT! Recording is permissible if copyright or other rights of third parties are not infringed upon.METAL (IEC IV) type tapes. ALBUMALBUM VCD/CDTUNERTAPEAUX ECHO KEYPROG Radio Reception Tuning to radio stations 1Select TUNER source. “TUNER” is displayed briefly. 2Press BAND to select the desired waveband : FM or MW. 3Press and hold S or and then release it.