Philips-MC-145-Service-Manual电路原理图.pdf

Version 1.4MC1453141 785 30684Micro SystemAll version Published by YT 0832 Service Audio Printed in The Netherlands Subject to modification© Copyright 2006 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrievalsystem or transmitted, in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.Repair Policy of PCBs.1-1Technical Specification . 2-1Service Measurement Setup . 2-2Alignment Instruction . 2-3Connections and Controls . 3-1.3-3Disassembly Instruction . 4-1.4-2Set Block Diagram . 5-1Set Wiring Diagram . 5-2Display BoardCircuit diagram . 6-1Layout diagram . 6-2Combi Board(Main Board)Circuit diagram (Tuner/Tape/Amp part) . 7-1Circuit diagram (CD part) . 7-2Layout diagram - top view . 7-3Layout diagram - bottom view . 7-4Exploded View Diagram . 8-1Mechanical Partslist . 8-2Accessories and Electrical Partslist . 9-1.9-3Revision . 10-1TABLE OF CONTENTSREPAIR POLICY OF PCBS1-1VERSION VARIATIONS:Type /Versions:FeaturesBoard in used:MC145Service policyDISPLAY BOARDMAIN BOARD (COMBI BOARD)* TIPS : C - Component Lever Repair.M - Module Lever Repair - Used/05 /12 8559/61/Feature diffrenceCType /Versions:MC14539/58/97/73/CCC/05 /12 8559/39/58/97/738/7/61/CCDISPLAY BOARD CCC87/2 - 1SPECIFICATIONS GENERAL: Mains voltage /37 : 120V /55/85/98 : 110 / 220V switchable /12/61/79/93 : 220 240V Mains frequency : 50/60 Hz Power consumption : 45 dB IF rejection : > 50 dB Image rejection : > 20 dB Distortion : 20 dB MWTuning range /37/55 : 530 -1700 kHz (10 kHz grid) others : 531 -1602 kHz (9 kHz grid) Grid : 9/10 kHz IF Frequency : 450 kHz g114 3kHz Aerial input : Inner bar antenna Sensitivity at 26sb S/N : 18 dB IF rejection : > 45 dB Image rejection : > 30 dB Distortion : 35 dB with type 1 tape COMPACT DISC: No. of programming track : 20 Frequency response Within g114 3 dB : 63 Hz 16 kHz Signal/Noise ratio : 50 dB/A-weighted Distortion at 1 kHz : 25 dB 2 - 2SERVICE MEASUREMENTBandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BTuner FWUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50½Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Technology ST1700BFrame aeriale.g. 7122 707 89001Tuner AM (MW,LW)To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday«s cage.Use a bandpass filter (or at least a high pass filter with 250kHz) to eliminate hum (50Hz, 100Hz).RF Generator e.g. PM5326Ri=50½LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTCD RECORDERUse Audio Signal Disc SBC429 4822 397 30184(replaces test disc 3)Use Universal Test Cassette Fe SBC420 4822 397 30071LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTLF Generator e.g. PM5110Ri=50½2 - 3AM I.F. ALIGNMENT1. Set the POWER BUTTON to POWER “ON“.2. Set the FUNCTION SELECTOR SWITCH to RADIO & AM BAND.3. Connect a SWEEPSCOPE OUTPUT to AM antenna terminal.4. Connect a SWEEPSCOPE INPUT to pin 13 of IC1 through a 1uf capacitor and ground.STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR1 450KHz GANG OPEN T1(AM IF)CENTER& MAXIMUM OUTPUTAM R.F. ALIGNMENT1. Connect an RF generator to a standard radiating loop.2. Connect a SCOPE and VTVM across the speaker output.STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR1 530KHz T2 (AM OSC COIL)2 1700KHz CT1 MAXIMUM3 612KHz 612KHz (AM SENS COIL) OUTPUT4 1404KHz 1404KHz CT3 (AM SENS TRIM.)5 REPEAT STEPS 3 AND 4 TO OBTAIN BEST TRACKING.FM I.F. ALIGNMENT1. Set the POWER SWITCH to POWER “ON“.2. Set the FUNCTION SELECTOR to RADIO & FM BAND.3. Connect a SWEEPSCOPE OUTPUT to pin5 of IC001 through a 20pF capacitor and ground.4. Connect a SWEEPSCOPE INPUT to pin16 or 17 of IC001 through a 1uf capacitor and ground.STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR1 10.7MHz GANG OPEN CHECKMAX.AMPLITUDEBALANCED CURVEFM R.F. ALIGNMENT1. Connect an RF generator to the FM antenna terminal and ground.2. Connect a SCOPE & VTVM across the speaker output.STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR1 87.5MHz L3 (FM OSC COIL)2 108MHz CHECK MAXIMUM3 90MHz 90MHz L4 (FM RF COIL) OUTPUT4 106MHz 106MHz CT25 REPEAT STEPS 3 AND 4 TO OBTAIN MAX ADJUST.CASSETTE ALIGNMENT1. Set the FUNCTION SELECTOR BUTTON TO TAPE.2. Connect a Scope & VTVM across the speaker output.3. Insert the 8KHz tape in to cassette deck and push play BUTTON.4. ADJUST HEAD for speaker maximum output.MOTORSCREWDRIVERSCREWDRIVERADJUSTINGSCREWCD ALIGNMENTAuto alignment.GANG OPENGANG CLOSEDGANG OPENGANG CLOSEDALIGNMENT INSTRUCTIONxx3 - 1CONNECTION AND CONTROLS83 - 2CONNECTION AND CONTROLS#ONTROLSILLUSTRATIONSONPAGE #ONTROLSONTHESYSTEMANDREMOTECONTROL,#$ISPLAYn SHOWSTHESTATUSOFTHESYSTEMI23%.3/2n INFRAREDSENSORFORREMOTECONTROL02/'FOR#$ PROGRAMSTRACKSANDREVIEWSTHEPROGRAMFOR4UNER PROGRAMSTUNERSTATIONSMANUALLYORAUTOMATICALLY0/7%2Nn SWITCHESTHESYSTEMTOSTANDBYON0,!90!53%FOR#$ STARTSORPAUSES#$PLAYBACK45.).' 02%6)/53.%84G FOR#$ SKIPSTOTHEBEGINNINGOFACURRENTTRACKPREVIOUSNEXTTRACKFASTSEARCHESBACKANDFORWARDWITHINATRACK#$FOR4UNER TUNESTORADIOSTATIONSFORCLOCKTIMER ADJUSTSTHEHOURSANDMINUTESFORCLOCKTIMERFUNCTIONS3/52#%#$45.%24!0% n SWITCHESONTHESYSTEMn SELECTSTHERESPECTIVESOUNDSOURCEFOR#$45.%24!0%4)-%2n ACTIVATESDEACTIVATESORSETSTHETIMERFUNCTION02%3%4 ONREMOTECONTROL FOR4UNER SELECTSAPRESETRADIOSTATION 0,!9-/$%2%0%!43(5&&,% n REPEATSATRACK#$PROGRAMENTIRE#$n PLAYS#$TRACKSINRANDOMORDER34/0“!.$FOR#$ STOPS#$PLAYBACKORERASEA#$PROGRAMFOR4UNER ONTHESETONLY SELECTSWAVEBAND$)30,!9#,/#+FOR#$ DISPLAY#$REMAININGTIMEATSTANDBY SETSTHECLOCKFUNCTION$“$YNAMIC“ASS“OOST n ENHANCESTHEBASS6/,5-% ONREMOTECONTROL n ADJUSTSVOLUMELEVELn CONNECTHEADPHONES84APE$ECK/PERATION/0%.s#,/3%/PENSTHETAPEKEYCOVER2%#/2$ STARTSRECORDING0,!9STARTSPLAYBACKàá FASTREWINDSFORWARDSTHETAPE34/0s/0%.STOPSTHETAPEOPENSTHETAPECOMPARTMENT0!53%PAUSESRECORDINGORPLAYBACK/0%.s#,/3%n OPENSCLOSESTHE#$DOOR-54%n SWITCHESPLAYBACKSOUNDOFFANDON3,%0n ACTIVATESDEACTIVATESORSELECTSTHESLEEPERTIME.OTESFORREMOTECONTROLn &IRSTSELECTTHESOURCEYOUWISHTOCONTROLBYPRESSINGONEOFTHESOURCESELECTKEYSONTHEREMOTECONTROLFOREXAMPLE#$ 45.%2 n 4HENSELECTTHEDESIREDFUNCTIONFOREXAMPLEÉ í ë xx0REPARATIONS2EARCONNECTIONS4HETYPEPLATEISLOCATEDATTHEBACKOFTHESYSTEM0OWERn “EFORECONNECTINGTHE!#POWERCORDTOTHEWALLOUTLET ENSURETHATALLOTHERCONNECTIONSHAVEBEENMADEn )FYOURSYSTEMISEQUIPPEDWITHA6OLTAGE3ELECTOR SETTHE6/,4!'%3%,%#4/2TOTHELOCALPOWERLINEVOLTAGE7!2.).'n &OROPTIMALPERFORMANCE USEONLYTHEORIGINALPOWERCABLEn .EVERMAKEORCHANGEANYCONNECTIONSWITHTHEPOWERSWITCHEDON3PEAKERS#ONNECTION&RONT3PEAKERS#ONNECTTHESPEAKERWIRESTOTHE30%!+%23TERMINALS RIGHTSPEAKERTO2)'(4ANDLEFTSPEAKERTO,%&4 COLOUREDMARKED WIRETO+ANDBLACKUNMARKED WIRETO-&ULLYINSERTTHESTRIPPEDPORTIONOFTHESPEAKERWIREINTOTHETERMINALASSHOWN.OTESn &OROPTIMALSOUNDPERFORMANCE USETHESUPPLIEDSPEAKERSn $ONOTCONNECTMORETHANONESPEAKERTOANYONEPAIROF+-SPEAKERTERMINALSn $ONOTCONNECTSPEAKERSWITHANIMPEDANCELOWERTHANTHESPEAKERSSUPPLIED0LEASEREFERTOTHE30%#)&)#!4)/.3SECTIONOFTHISMANUALFM ANTAC 110V220V&-ANTENNA!#POWERCORD3PEAKERRIGHT 3PEAKERLEFT 3 - 3CONNECTION AND CONTROLS4 - 1DISASSEMBLY INSTRUCTIONA1 A2A3A4A. Remove Top CabinetA1: Remove screws T3x8 (2 pcs)A2: Remove screws T3x8 (2 pcs)A3: Remove screws T3x10 (2 pcs)A4: Remove screws T3x10 (2 pcs)B. Remove CD ModuleB1: Remove screws T3x10 (2 pcs)B1C. Remove CD Module CoverC1: Remove screws T3x10 (6 pcs)C14 - 2DISASSEMBLY INSTRUCTION4 - 2E1D1D. Remove CDMD: Remove special screws (4 pcs)E. Remove Back CabinetE1: Remove screws T3x8 (2 pcs)F2F1F3F. Remove Cassette Board Assy and Tape DeckF1: Remove screw T3x8 (1 pc)F2: Remove screw M3x6 (1 pc)F3: Remove screws T3x10 (4 pcs)G1G. Remove PCB BracketG1: Remove screws T3x8 (3 pcs)H1H. Remove Front PCB AssemblyH1: Remove screws T3x8 (14 pcs)