Sony-CDPEX100-cd-sch 维修电路原理图.pdf

1 CDP-EX100SERVICE MANUALAEP ModelUK ModelE ModelModel Name Using Similar MechanismCDP-EX10CD Mechanism TypeCDM28-5BD19Base Unit NameBU-5BD19SPECIFICATIONSCOMPACT DISC PLAYERMICROFILMThis set is the CD player section inMHC-EX50/EX70AV/EX100AV.RadioFans.CN 收音机爱 好者资料库 6 Note :1.Basically designed to operate without adjustment. Therefore, checkeach item in order given.2.Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.3.Use an oscilloscope with more than 10M impedance.4.Clean the objective lens by an applicator with neutral detergentwhen the signal level is low than specified value with the followingchecks.5.Adjust the focus bias adjustment when optical block is replaced.Focus Bias AdjustmentSECTION 4ELECTRICAL ADJUSTMENTSProcedure:1.Connect oscilloscope to test point TP (RF). (GND terminal : VC)2.Turn Power switch on.3.Put disc (YEDS-18) in and playback.4.Adjust RV101 so that the waveform is clear.(Clear RF signal waveform means that the shape “ ” can beclearly distinguished at the center of the waveform.)5.After adjustment, check the RF signal level. RF signalVOLT/DIV : 200 mVTIME/DIV : 500 nSS Curve CheckProcedure:1.Connect oscilloscope to test point TP(FEO).2.Connect between test point TP(FOK)and GND by lead wire.3.Turn Power switch on.4.Put disc (YEDS-18) in and turnd Power switch on again andactuate the focus search. (In case of using SERVICE BOX actuatethe focus search when disc table is moving in and out.)5.Check the oscillosope waveform (S-curve) is symmetrical betweenA and B. And confirm peak to peak level within 2.40.7 Vp-p.S-curve waveform6.After check, remove the lead wire connected in step 2.Note : Try to measure several times to make sure than the ratio ofA:B or B:A is more than 10:7. Take sweep time as long as possible and light up thebrightness to obtain best waveform.RF Level CheckProcedure:1.Connect oscilloscope to test point TP (RF) on BD board.2.Turn Power switch on.3.Put disc (YEDS-18) in and playback.4.Confirm that oscilloscope waveform is clear and check RF signallevel is correct or not.Note :Clear RF signal waveform means that the shape “ ” can be clearlydistinguished at the center of the waveform.RF signal waveformBD boardoscilloscopeTP (FEO)TP (FOK)VOLT/DIV : 200mVTIME/DIV : 500nSlevel : 1.30.3 Vp-pBD boardTP (RF)TP (VC)oscilloscopeBD boardTP (RF)VCoscilloscope(DC range)level1.30.3 Vp-psymmetrywithin 2.40.7 Vp-pABRadioFans.CN 收音机爱 好者资料库 7 E-F Balance CheckProcedure:1.Connect oscilloscpe to test point TP (TEO).2.Turn Power switch on.3.Connect pin of IC60I on the PANEL board to GND with a leadwire.4.Put disc (YEDS-18) in and playback.5.Push TIME button.6.Confirm that the oscilloscope waveform is symmetrical on the topand bottom in relation to 0Vdc, and check this level. Traverse waveform7.Remove the lead wire connected in step 3.Focus/Tracking Gain Adjustment (RV102, 103)This gain has a margin, so even if it is slightly off.There is no problem.Therefore, do not perform this adjustment.Please note that it should be fixed to mechanical center position whenyou moved and do not know original position.BD boardoscilloscopeTP (TEO)TP (VC)PANEL BOARD (Conductor Side)0Vlevel : 300100 mVp-psymmetryIC601402564412465801Adjustment Location :BD BOARD (Conductor Side)IC101RFTEIFEIRV102RV103IC104IC102FEOTEOFOKVCGNDPCKRV101 8 5-1. IC PIN FUNCTION IC601 PD78044AGF (SYSTEM CONTROL, FL DRIVER)Pin No.Pin NameI/OFunction1-7T6-T0OFL display grid output8VDD+5V power supply9CLKOSerial clock output to DSP (CXD2507AQ).10DATAOSerial data output to DSP (CXD2507AQ).11Fixed at Ground.12XLATOSerial data latch pulse output to DSP (CXD2507AQ).13PRGLOSerial data latch pulse output to D/F DAC (PCM1710U).14SQCLKOSub code Q data read clock output to DSP (CXD2507AQ).15Not used. (Open)16SUBQISub code Q data input from DSP (CXD2507AQ).17RESETISystem reset input (“ L ”= Active)18INSWIS292 (load in switch) input19OUTSWIS291 (load out switch) input20AVSSGround21LDOUTOOutput for rotating M903 (loading motor) in the loading out direction.22LDINOOutput for rotating M903 (loading motor) in the loading in direction.23ADJITest mode input. (“ L ”= Stops GFS check)24AFADJITest mode input. Fixed at “H”. (“ L ”= Test mode)25MODEINot used. (Fixed at “ H ”.)26-28KEY2-KEY0IKey AD input29AVDD+5V power supply30AVREF+5V power supply31Fixed at Ground.32Not used. (Open)33VSSGround34X1IClock input (5MHz)35X2OClock output (5MHz)36BDRSTOBD reset output37BDPOWEROBD power ON/OFF output38Not used. (Open)39SENSISENS input from DSP (CXD2507AQ).40AMUTEONot used. (Open)41FSWOFocus switch output42BSOUTOAudio bus output43Not used. (Open)44SCORISub code sync S0+S1 detection input45JOG1IJOG input46Not used. (Open)47BSINIAudio bus input48IC (VPP)Connected to Ground.49JOG0IJOG input50, 51Not used. (Open)52VDD+5V power supply53-70S22-S5OFL display segment output71VLOAD-28V power supply for driving FL display.72-76S4-S0OFL display segment output77-80T10-T7OFL display grid outputSECTION 5DIAGRAMS