- 1-1 -CONTENTSSECTION 1. GENERAL SERVICING PRECAUTIONS.....................................................................................................................1-2 ESD PRECAUTIONS..................................................................................................................................1-4 SPECIFICATIONS......................................................................................................................................1-5SECTION 2. ELECTRICAL ADJUSTMENTS..........................................................................................................................................2-1 TROUBLESHOOTING................................................................................................................................2-3 WAVEFORMS OF MAJOR CHECK POINT...............................................................................................2-8 BLOCK DIAGRAM......................................................................................................................................2-9 SCHEMATIC DIAGRAMS ........................................................................................................................2-11 WIRING DIAGRAM ....................................................................................................................................2-19 PRINTED CIRCUIT DIARGAM.................................................................................................................2-21 INTERNAL BLOCK DIAGRAM OF ICs....................................................................................................2-31 REPAIRS REGARDING CD MECHANISM..............................................................................................2-40SECTION 3. EXPLODED VIEWS CABINET AND MAIN FRAME SECTION...................................................................................................3-1 TAPE DECK MECHANISM: AUTO REVERSE DECK.................................................................................3-3 TAPE DECK MECHANISM: AUTO STOP DECK(OPTIONAL)...................................................................3-5 CD MECHANISM.........................................................................................................................................3-7 SECTION 4. SPEAKER SECTION.................................................................................................4-1SECTION 5. REPLACEMENT PARTS LIST..................................................................................5-1- 1-2 -SECTION 1. GENERALSERVICING PRECAUTIONSNOTES REGARDING HANDLING OF THE PICK-UP1. Notes for transport and storage1) The pick-up should always be left in its conductive bag until immediately prior to use.2) The pick-up should never be subjected to external pressure or impact.2. Repair notes1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure andimpact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/ordamage to the printed-circuit board.3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reasonthe adjustment point and installation screws should absolutely never be touched.4) Laser beams may damage the eyes!Absolutely never permit laser beams to enter the eyes!Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.5) Cleaning the lens surfaceIf there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as usedfor camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, acotton swab should be used, taking care not to distort this.6) Never attempt to disassemble the pick-up.Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Donot use any other liquid cleaners, because they will damage the lens.) Take care not to use too much ofthis alcohol on the swab, and do not allow the alcohol to get inside the pick-up.Storage in conductive bag Drop impactNEVER look directly at the laser beam, and dont letcontact fingers or other exposed skin.MagnetHow to hold the pick-upaPressurePressureCotton swabConductive Sheet- 1-3 -NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). Thesecomponents are sensitive to, and easily affected by, static electricity. If such static electricity is highvoltage, components can be damaged, and for that reason components should be handled with care.2) The pick-up is composed of many optical components and other high-precision components. Care mustbe taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strongmagnetism is present, or where there is excessive dust.2. Notes for repair1) Before replacing a component part, first disconnect the power supply lead wire from the unit2) All equipment, measuring instruments and tools must be grounded.3) The workbench should be covered with a conductive sheet and grounded.When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This isbecause there is the possibility of damage by static electricity.)4) To prevent AC leakage, the metal part of the soldering iron should be grounded.5) Workers should be grounded by an armband (1M)6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to preventstatic electricity changes in the clothing to escape from the armband.7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.CLEARING MALFUNCTIONYou can reset your unit to initial status if malfunction occur(button malfunction, display, etc.).Using a pointed good conductor(such as driver), simply short the RESET jump wire on the inside of thevolume knob for more than 3 seconds. If you reset your unit, you must reenter all its settings(stations, clock, timer)NOTE: 1. To operate the RESET jump wire, pull the volume rotary knob and release it.2. If you wish to operate the RESET jump wire, it is necessary to unplug the power cord.ArmbandConductiveSheetResistor(1 Mohm)Resistor(1 Mohm)VOLUME KNOBUPDOWNVOLUMERESET jump wireESD PRECAUTIONSElectrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such componentscommonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integratedcircuits and some field-effect transistors and semiconductor chip components. The following techniques shouldbe used to help reduce the incidence of component damage caused by static electricity.1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain offany electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear acommercially available discharging wrist strap device, which should be removed for potential shock reasonsprior to applying power to the unit under test.2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductivesurface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" cangenerate electrical charges sufficient to damage ESD devices.5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESDdevices.6. Do not remove a replacement ESD device from its protective package until immediately before you areready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together byconductive foam, aluminum foil or comparable conductive materials).7. Immediately before removing the protective material from the leads of a replacement ESD device, touch theprotective material to the chassis or circuit assembly into which the device will by installed.CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHERSAFETY PRECAUTIONS.8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motionsuch as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor cangenerate static electricity sufficient to damage an ESD device).- 1-4 -- 1-5 -SPECIFICATIONS1. AMP SECTION1) Power Output (6 , 2 channel, T.H.D. 10%)......................................................................110W+110W2) T.H.D............................................................................................................................................0.15%3) Frequency Response (-3dB down)....................................................................................42Hz~25kHz4) Signal-to-noise Ratio......................................................................................................................80dB5) Input Sensitivity AUX............................................................................................................40050mV6) Channel Difference 1kHz.................................................................................................................3dB2. TUNER SECTION1) FM/OIRT1) Frequency Range.....................................................................................................87.5MHz~108MHz................................................................................................or 65.0MHz~74.0MHz & 87.5MHz~108MHz2) Intermediate Frequency...........................................................................................................10.7MHz3) Sensitivity (70MHz/78.6MHz/83.0MHz/86.6MHz/90MHz/98MHz).................................................12dB4) Signal-to-noise Ratio 98.1MHz(Mono/Stereo)......................................................................61dB/58dB5) Image Rejection 106.1MHz............................................................................................................20dB6) IF Rejection 90.1MHz....................................................................................................................65dB7) Distortion 98.1MHz(Mono/Stereo)............................................................................................1.2/1.2%8) Frequency Response (-3dB).............................................................................................60Hz~10kHz9) Stereo Separation (100Hz/1kHz/10kHz)........................................................................................25dB2) AM(MW)1) Frequency Range........................................522KHz~1611KHz/530KHz~1610KHz/530KHz~1720KHz2) Intermediate Frequency.............................................................................................................450KHz3) Usable Sensitivity...........................................................................................................................55dB4) Image Rejection (1404kHz)...........................................................................................................23dB5) IF Rejection (603kHz)....................................................................................................................40dB6) Selectivity (1008kHz)...................................................................................................................23dB7) Signal-to-noise Ratio (1008kHz)....................................................................................................35dB8) Distortion (1008kHz)......................................................................................................................1.5%9) Frequency Response (1008kHz)...................................................................................100Hz~1900Hz3) SW(OPTIONAL)1) Frequency Range.........................................................................................................5.8MHz~18MHz2) Intermediate Frequency.............................................................................................................450kHz3) Usable Sensitivity...........................................................................................................................40dB4) Signal To Noise Ratio....................................................................................................................35dB5) Distortion ..........................................................................................................................................3%4) LW(OPTIONAL)1) Frequency Range........................................................................................................153kHz~281kHz2) Intermediate Frequency.............................................................................................................450kHz3) Usable Sensitivity...........................................................................................................................65dB4) Signal To Noise Ratio (200kHz).....................................................................................................28dB5) Distortion (200kHz)...........................................................................................................................3%3. TAPE DECK SECTION1) Tape Speed (MTT-111) / Normal Speed..............................................................4.75(+2%, -1%)cm/sec2) Wow Flutter (MTT-111) ..................................................................................................................0.25%3) Fast Forward and Rewind Time (C-60).........................................................................................120sec4) Frequency Response (6dB range).......................................................................................125Hz~8kHz5) Signal-to-noise Ratio (Playback/Record)................................................................................43dB/43dB5) Distortion (Playback/Record).......................................................................................................3% / 4%6) Crosstalk (Playback: 1kHz)...............................................................................................................55dB7) Channel Separation (Playback: 1kHz)..............................................................................................50dB8) Erase Ratio.......................................................................................................................................55dB4. COMPACT DISC PLAYER SECTION1) Frequency Response (40Hz-18kHz)......................................................................................+0.5/-3.0dB2) Signal-to-noise Ratio (1kHz).............................................................................................................70dB3) Dynamic Range (1kHz).....................................................................................................................70dB4) T.H.D. (1kHz)....................................................................................................................................0.4%5) Separation (100Hz/1kHz/10kHz)...................................................................................45dB/45dB/40dB6) Access Time Short / Long.........................................................................................................2sec/5sec5. GENERAL1) Power requirement....................................................................................Refer to the back panel of unit2) Power consumption................................................................................................................About 400W3) Dimension (W x H x D)...........................................................................................273 x 326 x 360 (mm)4) Weight (net)......................................................................................................................................8.3kgNOTE : Specification are subject to change without notice in the course of product improvement.- 1-6 -- 2-1 -TAPE DECK ADJUSTMENT1. AZIMUTH ADJUSTMENTFigure 1. Azimuth Adjustment Connection DiagramCH1 CH2Speaker OutPlayback ModeHeadTest TapeMTT-114L chR chGNDDual-tracesynchroscopeElectronicVoltmeterL outR outUnitSECTION 2. ELECTRICALADJUSTMENTSThis set has been aligned at the factory and normally will not require further adjustment. As a result, it is notrecommended that any attempt is made to modificate any circuit. If any parts are replaced or if anyone tamperswith the adjustment, realignment may be necessary.IMPORTANT1. Check Power-source voltage.2. Set the function switch to band being aligned.3. Turn volume control to minimum unless otherwise noted.4. Connect low side of signal source and output indicator to chassis ground unless otherwise specified.5. Keep the signal input as low as possible to avoid AGC and AC action.Deck Mode Test Tape Test Point Adjustment Adjust forA Deck Playback MTT-114 Speaker OutDECK ScrewMaximumAzimuth ScrewB Deck Playback MTT-114 Speaker Out Azimuth Screw Maximum2. MOTOR SPEED ADJUSTMENTFigure 2.Motor Speed Adjustment Connection DiagramHeadPlayback ModeUnitSpeaker OutGNDL outR outRecord/PlaybackheadTest TapeMTT-111Frequency CounterDeck Mode Test Tape Test Point Adjustment Adjust for RemarkNormal Speed MTT-111 Speaker Out VR201 3kHz 1% A DeckHI-Speed MTT-111 Speaker Out more than 5.4kHz HI-Speed Dubbing Mode- 2-2 -3. RECORD BIAS ADJUSTMENTHeadUnitPN202GND Record/PlaybackheadTest TapeMTT-5511Record/Playbackand Pause ModeFrequency CounterDeck Mode Test Tape Test Point Adjustment Adjust forRec/Pause MTT-5511ERASE HEADL20360kHz5kHz (Auto stop)WIRE(PN202) 85kHz5kHz(Auto Reverse)Figure 3. Record Bias Adjustment Connection Diagram4. TUNER ADJUSTMENTFigure 4. Tuner(S curve) Adjustment Connection DiagramUnitSignal GeneratorGNDElectronicOSCILLOSCOPEFM AntennaTerminal SpeakerItem Test Point Adjustment Adjust forAM IF Speaker OutL101 Maximum- 2-3 -TROUBLESHOOTINGTurn power on.Is power on?Does initial read work?Does it play?Does it output audio?Check power supply circuit.(Check PN 701)Check laser circuit.Check focus circuit.Check disc.Check tracking servo circuit.Check audio circuit.OKYESYESYESYESNONONONO- 2-4 -Fails to initial read 1.3VABYESYESYESYESYESYESYESYESNONONO NO NO NONONONONODoes laser light?Disc motor turns.Does RFwaveformappear?TP 801(RF)Does trackingservo work?Lower envelopeof TP801(RF)waveform is flat.Does signalappear atTP801(TEO)?Does signal appear at IC 803Pinand Pin ?Does GFS (IC802 pin 25)show as below?Is rotation normal?Is there no dropout of RFsignal?Does TE2 signalappear at pinof IC801?Defective IC801, pick upand/or openwire.Detective pattern.Defective IC 801and/or IC 803Defective pick-upand/or connector.Defective IC 801.Scratch in discinitial read area.Defective pick-upadjustment focus offset.5326 27- 2-5 -ANONONONONONOLaser does not light.Is 3.5V applied to pinof IC 801?Is power supplied to laser Q801?(Q 801 collector: about 1.8V)Does laser current flow?1.0V across R801Is data transferred fromMICOM IC ?Does voltage appear at IC803 pin 11, 12?Defective MICOM.Defective MICOM.Defective connector.Defective IC 801, 803 Defective slide motor and/orconnector.Defective LMT SW and/orconnector.Defective Q 801 and/or laser.Defective laser and/orconnector.Did pickup return toinnermost circular?Does it stop at inner pickcircular after shift?Is defect output from LMSW applied to pin 2 ofPN803?R8011.0VR8011.0VYESYESYESYESOPEN CLOSEYESYESYESYESYESYES70- 2-6 -BCDoes lens move up/down?Does IC 801 out focussearch signal?IC 801 pin (FEO)Is focus search signalapplied to pin , ofCN801?Laser lights.Confirminitialread withdiscDefective IC801 Defective IC803 Defective IC 801.Open activator and/orconnector.Open connector and/ordefective IC 801.Incorrect turntable height.Degraded laser diode.Does TP 801 RF signal appear even inlow level?Is laser output adjustment correct?Does FOK(focus ok) signal appear?YESYESYESYESYESYESTP801(RF)IC801 pin(FOK)NO NONONONONO4813 1640- 2-7 -FERISTAT(SENSE)CStart modeDoes FE1 signal appear? IC 801 pinDoes FZC signal (focus zero cross signal)appear at pinof IC 801, ISTAT (SENSE)terminal?Does SMON signal appear at pinof IC 802?Does SMPO signal appear at pinof IC 802?Is drive voltage applied to disk motor?Defective IC 801.Open pick diodeDefective IC 801.Defective Pattern between IC 801 andIC 802.Defective IC 801, 803 and/orperipheral circuit.Defective disk motor and/or insulation.(Focus servo turnsON by FZC signalof FOK mod.)NONONONOYESYESYESYESYES73753159- 2-8 -(CH1)(CH2)WAVEFORMS OF MAJOR CHECK POINT1. HF signal (RF signal ) waveform(Test Point TP801) during normal play 2. EFM signal (pinIC 801)waveformduring Normal Play3. Focus coil drive waveform(Pin NO 1, 2 of IC 803) When focus search failed or there is no disc on the tray Focus coil drive waveform(pin NO 1, 2 of IC803) and FOK(pin NOof IC 801) when focus search is accomplished4. Tracking coil drive waveform (pin NO,of IC 803)and TEO during track traverse(1) When time division is 20nS/div(2) When time division 0.5nS/div.(During forward track traverse)(3) When time division is 0.5nS/div.(During backward Track Traverse)5. Feed motor drive waveform(pin NO 11, 12 of IC 803)During normal playCH1 : FOCUS COIL DRIVESIGNAL 2V/Div.CH2 : FOAKCH1 : TEO(TP801)1V/Div.CH2 : TRACKING COIL DRIVESIGNAL 2V/Div.(((((CH1 : TEO(TP801)1V/Div.CH2 : TRACKING COIL DRIVESIGNAL 2V/Div.CH1 : TEO(TP801)1V/Div.CH2 : TRACK COIL DRIVESIGNAL 2V/Div.402633270.5V/Div.500nS/Div.(2V/Div.500nS/Div.(0.5V/Div.500nS/Div.OVOVOV(CH1)(CH2)(CH1)(CH2)(CH2)OVOVOVOVOVOVOVOVOV- 2-29 - POWER P.C. BOARD(optional, with POWER SAVING function)- 2-30 - CD MAIN P.C. BOARDLOCATION GUIDE- 2-31 -Pre OutCh23.3F3.3F3.3F3.3F3.3F1000F1000F47F47F47F0.018F1000F3.3F47F1.2F100FR . RVcc1000F47F0.018F10k10k150k150k1M2.2k2.2kRec INCh2RecINRec INCh1ALCRec OutCh2180k180kGvGvo180k180k1k1k1k1k100k10010k10k10300k9.1k100Pre INCh2/B(Play Rec)Pre INCh2/A(Play only)Pre INCh1/B(Play Rec)Pre OutCh1Pre INCh1/ACh1/B NFCh2/ACh1/ACh1/BGvoGvGvoGvVccMNNF NFCh1Ch1Ch2GvcGVCh2ALCGNDRec151413121123241216 17 18 19 21 22INVref1VrefVref2A/BMetalOutPreOutRECOutRec OutCh1MixOutGND1 M/N6.8kAB1000pF1000pF6.8k 9.1k20109 8 7 6 4 3 5M/NREC SW REC SW GND P/B SW P/B SW CONT GND GND VCC1 2 3 4 5 6 7 8 9 KA3082 KIA6289NINTERNAL BLOCK DIAGRAM OF ICs LA1837- 2-32 - KIA7805 P/PI ~ KIA7824P/PI3124R12R1C21R12Q1Q7Q13Q10Q6Q5Q4Q3Q11Q15Q14Q9Q 8Q16Q17QINPUTOUTPUTGND2Q1Z18R8R9R13R11R17R5R6R1R2RR16R20R19R14R10R7R LC72723M+5V+5VVREFCIN FLOUT VREFVddaVssaMPXINTESTXIN XOUTVssdVdddRDCLRDDAMODERSTRDS-IDREADYCLK(4.332MHz)SMOOTHINGFILTEROSCPLL(57kHz)DATADECODERRAM(128bit)RDS-IDDETECTCLOCKRECOVERY(1187.5Hz)ANTIALIASINGFILTERREFERENCEVOLTAGE57kHzBPF(SCF)TEST- 2-33 - TDA7440D STK 412-010L-IN1100K100K100K100K100K100K100K100K4 8 9 1827212220262425LOUTSCLSDADIG_GNDROUTVSAGNDRBRB14 1510 11 19 12 13 235GG6732INPUT MULTIPLEXER+GAINMUXOUTRINR TREBLE(R) BIN(R) BOUT(R) CREF D98AU8830/30dB2dB STEPMUXOUTLVOLUME TREBLEI CBUS DECODER + LATCHESBASSSPKR ATTLEFTVOLUME TREBLE BASSSUPPLYVREFSPKR ATTRIGHTINL TREBLE(L) BOUT(L) BIN(L)128L-IN2L-IN3L-IN4R-IN1R-IN2R-IN3R-IN4214TR1 TR2TR6TR9TR8TR10TR16C12D41TR11C11TR14 TR13R11TR41TR12D51D12R41D53D52D43D42SUBComparatorComparatorTR19TR18TR17TR15TR51TR7TR5TR20D2D1C2R1 C1R4R2TR4 TR3R5R6R7R3 R13R16R15R12R51R14R17151612 9 8 11 1013 18 176457231- 2-34 -B01 B02 B03 B04 I01 I02XINPDAINAOUTIFINXOUTFMINAMINCEDICLD0VDDVSSREFERENCEDIVIDERPHASEDETECTORCHARGE PUMPUNLOCKDETECTORUNIVERSALCOUNTERDATA SHIFT REGISTERLATCH12bits PROGRAMMABLEDIVIDERSWALLOW COUNTER1/16. 1/17 4bitsPOWERONRESETCCBI/F12 LC72131, 72131M MSGEQ7AudioInAnti-AliasFilterClockOscillatorOutputMultiplexorCKINReset63HzBandpass160HzBandpass400HzBandpass1kHzBandpass2.5kHzBandpass6.25kHzBandpass16kHzBandpassPeakDetectorPeakDetectorPeakDetectorPeakDetectorPeakDetectorPeakDetectorPeakDetectorStrobeDC Out- 2-35 - KA9258PIN DESCRIPTION 28 27 26 25 24 23 22 21 20 19 18 17 16 151 2 3 4 5 6 7 8 9 10 11 12 13 14LEVELSHIFTLEVELSHIFTLEVELSHIFT10K10K10K50K 50K10K10KREGULATORMUTE10K 10KTSDLEVELSHIFT10K10K10KPin No. Symbol I/O Description1 DO1-1 O Drive Output2 DO1-2 O Drive Output3 DI1-1 I Drive Input4 DI1-2 I Drive Input 5 REGRegulator6 REO O Regulator Output 7 MUTE I Mute8 GND1 - Ground9 DI2.1 I Drive Input10 DI2.2 I Drive Input11 DO2.1 O Drive Output12 DO2.2 O Drive Output13 GND2 - Ground14 OPOUT O OPamp OutputPin No. Symbol I/O Description15 OPIN(-) I OPamp Input(-)16 OPIN(+) I OPamp output(+)17 DO3-1 O Drive Output(-)18 DO3-2 O Drive Output(+)19 DI3-I I Drive Input20 DI3-2 I Drive Input21 VCC1 - Supply Voltage 22 VCC2 - Supply voltage 23 VREF I 2.5V Bias Voltage24 DI4.1 I Drive Input25 DI4.2 I Drive Input26 DO4.1 O Drive Output(+)27 DO4.2 O Drive Output(-)28 GND3 - Ground- 2-36 -MICOM TO SERVO CONTROLAUTO SEQUENCERFOK DETECTIONCIRCUITMIRROR DETECTIONCIRCUITSpindle Servo LPF(Double Speed)Sled Servo Amplifier& Sled Kick GEN.TrackingPhaseCompensation Block& Jump Pulse GEN.FocusPhaseCompensation& Offset cancel circuit Micom DataInterface LogicRF Amp737465666367687969707178767532337724RF-RFOPD1PD2FEEIPDLDVRARFIRFASYEFMRFIDCBDCC1GC1OMLTTZCFE2FLBFGDFS3TE1FE1GC1ICH1OCH1IMUTEIRRCCH2OCH2IGC2IGC2O5 15 16 13 14 19 17 12 11 9 10401396252423454642444361625553504957484760FOKMCPMIRRORFSETSMEFSMONFS1 toFS4TM1 toTM6BAL1 toBAL5PS1 toPS4GA1 toGA5SMPDSPDL-SPDLOSL+SL-SLOTGUTG2LPFTTE2TEOTE-TDFCTFEOFE-FDFCT3 27 28 26 58 52 51 35 36 37 38 31 29 30 22 54 59APC AmpCenter Voltage Amp.Focus Error AmpFE-BIAS AdjustmentTracking Error AmpE/F Balance & GainControlRF Level AGC &EqualizerEFMComparatorDefect DetectionCircuitTADJUSTMENT-FREE CONTROLBuilt-in Post Filter Amp(L&R)LDONPIN DESCRIPTIONPin No. System Description1 MCP Capacitor connection pin for mirror hold2DCB Capacitor connection pin for defect Bottom hold3 FRSH. Capacitor connection pin for time constant to generate focus search waveform4DCC2 The input pin through capacitor of defect bottom hold output5DCC1 The output pin of defect bottom hold6FSET The peak frequency setting pin for focus, tracking servo and cut off frequency of CLV LPF7VDDA Analog VCC for servo part8VCCP VCC for post filter9GC2I Amplifier negative input pin for gain and low pass filtering of DAC output CH210GC2O Amplifier output pin for gain and low pass filtering of DAC output CH211CH2I The input pin for post filter channel212CH2O The output pin for post filter channel213CH1O The output pin for post filter channl114CH1I The input pin for post filter channel115GC1O Amplifier output pin for gain and low pass filtering of DAC output CH1 KB9223- 2-37 -Pin No. System Description16GC1I Amplifier negative input pin for gain and low pass filtering of DAC output CH117RRC The pin for noise reduction of post filter bias18VSSP VSS for post filter19MUTEI The input pin for post filter muting control20ISET The input pin for current setting of focus search, track jump and sled kick voltage21VREG The output pin of regulator22WDCK The clock input pin for auto sequence23SMDP The input pin of CLV control output pin SMDP of DSP24SMON The input pin for spindle servo ON through SMON of DSP25SMEF The input pin of provide for an external LPF time constant26FLB Capacitor connection pin to perform rising low bandwidth of focus loop27FS3 The pin for high frequency gain change of focus loop with internal FS3 switch28FGD Reducing high freqency gain with capacitor between FS3 pin29LOCK Sled runaway prevention pin30TRCNT Track count output pin31ISTAT Internal status output pin32ASY The input pin for asymmetry control33EFM EFM comparator output pin34VSSA Analog VSS for servo part35MCK Micom clock input pin36MDATA Micom data input pin37MLT Micom data latch input pin38RESET Reset input pin39MIRROR The mirror output for test40FOK The output pin of focus OK comparator41SSTOP The pin for detection whether pick_up position is innermost or not42SL+ The noninverting input pin of sled servo amplifier43SLO The output pin of sled servo amplifier44SL- The inverting input pin of sled servo amplifier45SPDL- The noninverting input pin of spindle servo amplifier46SPDLO The output pin of spindle servo amplifier47FE- The inverting input pin of focus servo amplifier48FEO The output pin of focus servo amplifier49TE- The inverting input pin of tracking servo amplifier50TEO The output pin of tracking servo amplifier51ATSC The input pin for Anti-shock detection52TZC The comaparator input pin for tracking zero crossing detection53TE2 Tracking servo input pin54TE1 Tracking error amplifier output pin55LPFT The input pin of tracking error low pass filtering signal56DVDD The power supply pin for logic circuit57TDFCT The capacitor connection pin for tracking defect compensation58FE2 Focus servo input pin59FE1 Focus error amplifier output pin60FDFCT The capacitor connection pin for focus defect compensation61TGU The capacitor connection pin for high frequency tracking gain switch62TG2 The pin for high frequency gain change of tracking servo loop with internal TG2 switch63FEBIAS Focus error bias voltage control pin64DVEE The DVEE pin for logic circuit65PD1 The negative input pin of RF I/V amplifier1 (A+C signal)66PD2 The negative input pin of RF I/V amplifier2 (B+D signal)67F The negative input pin of F I/V amplifier (F signal)68E The negative input pin of E I/V amplifier (E signal)69PD The input pin for APC70LD The output pin for APC71VR The output pin of (AVEE+AVCC)/2 voltage72VCC VCC for RF part73RF- RF summing amplifier inverting input pin74RFO RF summing amplifier output pin75IRF The input pin for AGC76ARF The output pin for AGC77RFI The input pin for EFM comparating78CAGC The capacitor connection pin for AGC79EI Feedback input pin of E I/V amplifier for EF Balance control80GND GND for RF part- 2-38 - KS9286SUBCODESYNCDETECTORSUBCODEOUTPUTEFMDEMODULATOR8BIT DATA BUSADDRESSGENERATOREFMPHASEDETECTORDIGITALPLLDIGITALCLVSERVOCPUINTERFACEMODESELECTORDIGITALOUTPUTD/ACONVERTERDIGITALFILTER& DE-EMPHINTERPOLATORECC16KSRAMTRACKCOUNTER23BITSHIFTREGISTERFRAME SYNCDETECTORPROTECTORINSERTORX-TALTIMINGGENERATORSUBCODE-QREGISTERSQDT 302911665342727375767098373836616263657192033322669681214776760241722SDATSBCKS0S1LRCHOADATAOBCKOBCKIADATAILRCHIEMPHVREFL1VREFH1EFMICNTVOLDPFINDPFOUTDPDOSMEFSMONSMDPSMSDLOCKXOUTLCHOUTRCHOUTDATXTEST1TEST0XTALSELCDROMXINMDATMCKMLTTRCNT/ISTATSQCKPIN DESCRIPTIONPin No. Symbol IO Description1AVDD1 - Analog VCC12 DPDO O Charge pump output for Digital PLL3 DPFIN I Filter input for Digital PLL4 DPFOUT O Filter output for Digital PLL5CNTVOL I VCO control voltage for Digital PLL6 AVSS1 - Analog Ground17 DATX O Digital Audio output data8XIN I Xtal oscillator input9 XOUT O Xtal oscillator output10WDCHO O Word clock output of 48bit/Slot (88.2KHz)11LRCHO O Channel clock output of 48 bit/Slot (44.1KHz), 88.2KHz when ESP ON12ADATAO O Serial audio data output of 48 bit/Slot (MSB first), double speed output when ESP ON13DVSS1 - Digital Ground114BCKO O Audio data bit clock output of 48 bit/Slot (2.1168MHz), 4.2336MHz when ESP ON15 C2PO O C2 Pointer for output audio data16 VREFL2 I Input terminal2 of reference voltage L (Floating)- 2-39 -Pin No. Symbol IO Description17 VREFL1 I Input terminal1 of reference voltage L (GND connection)18 AVDD2 - Analog VCC219 RCHOUT O Right-Channel audio output through D/A converter20LCHOUT O Left-Channel audio output through D/A converter21 AVSS2 - Analog ground222VREFH1 I Input terminal1 of reference voltage H (VDD connection)23VREFH2 I Input terminal2 of reference voltage H (Floating)24 EMPH O Emphasis/Non-Emphasis output, H: Emphasis ON, L: Emphasis OFF25LKFS O The Lock Status output of frame sync26S0S1 O Output of subcode sync signal (S0+S1)27RESET I System reset at L28 /ESP I ESP function ON/OFF control (L: ESP function ON, H: ESP function OFF)29SQCK I Clock for output Subcode-Q data30SQDT O Serial output of Subcode-Q data31SQOK O The CRC (Cycle Redundancy Check) check result signal output of Subcode-Q32SBCK I Clock for output subcode data33SDAT O Subcode serial data output34 DVDD1 - Digital VDD135 MUTE I Mute control input (H: Mute ON)36MLT I Latch Signal Input from Micom (Scmit Trigger)37 MDAT I Signal data input from Micom (Scmit Trigger)38MCK I Signal clock Input from Micom (Scmit Trigger)39 DB8 I/O SRAM data I/O port 8 (MSB)40 DB7 I/O SRAM data I/O port 741 DB6 I/O SRAM data I/O port 642 DB5 I/O SRAM data I/O port 543 DB4 I/O SRAM data I/O port 444 DB3 I/O SRAM data I/O port 345 DB2 I/O SRAM data I/O port 246 DB1 I/O SRAM data I/O port 1 (LSB)47C1F1 I/O Monitoring output for C1 error correction (RA1)48 C1F2 I/O Monitoring output for C1 error correction (RA2)49 C2F1 I/O Monitoring output for C2 error correction (RA3)50C2F2 I/O Monitoring output for C2 error correction (RA4)51C2FL I/O C2 decoder flag (RA5, H: When one processing C2 code is impossible correction status.)52/PBCK I/O Output of VCO/2 (4.3218MHz) (RA6)53DVSS2 I/O Digital ground 254 FSDW I/O Window or unprotected frame sync (RA7)55 ULKFS I/O Frame sync protection state (RA8)56 /JIT I/O Display of either RAM overflow onncerflow for 4 frame jitter margin (RA9)57C4M I/O Only monitoring signal (4.2336M .. RA10)58C16M I/O 16.9344MHz signal output (RA11)59 /WE I/O Terminal for test60/CS I/O Terminal for test61XTALSEL I Mode Selection1 (H: 33.8688MHz, L: 16.9344MHz)62TEST0 I TEST input terminal (GND connection)63CDROM I Mode Selection2 (H: CD-ROM, L: CDP)64 SRAM I TEST input terminal (GND connection)65TEST1 I TEST input terminal (GND connection)66 EFMI I EFM signal input67ADATAI I Serial audio data input of 48 bit/Slot (MSB first)68 /ISTAT O The internal status output69TRCNT I Tracking counter input signal70 LOCK O Output signal of LKFS condition sampled PBFR/16 (if LKFS is H, LOCK is H, if LKFS is sampledL at least 8 times by PBFR/16, LOCK is L.)71 PBFR O Write frame clock (Lock: 7.35KHz)72SMEF O LPF time constant control of the spindle servo error signal73SMON O ON/OFF control signal for spindle servo74DVDD2 - Digital VDD275 SMDP O Spindle Motor drive (Rough control in the SPEED mode, Phase control in the PHASE mode)76SMSD O Spindle Motor drive (Velocity control in the PHASE mode)77BCKI I Audio data bit clock input of 48 bit/Slot (2.1168MHz)78TESTV I TEST input terminal (GND connection)79DSPEED I TEST input terminal (VDD connection)80LRCHI I Channel clock input of 48 bit/Slot (44.1KHz)- 2-40 -REPAIRS REGARDING CD MECHANISMIMPROVED METHOD - WHEN THE TRAY GEARS WERE DISTORTED1. How to open the tray.In case of not suppling power push two hooks (H) of the base, and them open the tray.2. How to improve the distorted gears.(1) Do the hole "C" of the cam gear to face forward the pick-up so the pick-up is down like figure.(2) Do the hole "B" of main gear to face forward pick-up, too.(3) Set the last part of main gear to point "A".(4) Push the tray to end.- 4-1 -SECTION 4. SPEAKER SECTIONMODEL: FE-876E850854867851852856857858854854859862865863861854860855864( Regional )MODEL FE-876E RUNDATE : 02.MAY.2001LGEMS ,LGEPS ,LGEPR ,LGECB, LGEMK,LGEPL NSP : NON SVC PARTLOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS850 3701RM0009A NET ASSY (FE-876E) NET METAL GRILLE NSP851 3720RMF012A PANEL,FRONT FRONT PANEL(FE-876E) NSP852 6400RMEB01A SPEAKER,TWEETER FE-876E 06N39EHC0339A EAW 60HM854 353M050C SCREW BH 3.5X16 FBK855 353M021A SCREW WOOD,3.5X16, HEAD 6MM,FBK856 353M050G SCREW,DRAWING 2 D4.0L8.0MSWR3/FZY857 6400RCEY01A SPEAKER,GENERAL PIEZO EAW (FE-868E)500 OHM 100858 6400RMEJ02A SPEAKER,WOOFER FE-876E 16L90EHC0337 EAW 60HM859 3110RM0007A CASE TOP CASE(FE-876) NSP860 4350RM0005A RING WF RING (FE-876E) NSP861 353M025Q SCREW WOOD,3X10 FBK862 353M025K SCREW TAPTITE, 3X12 FZMY863 6871RU4119A PWB(PCB) ASSY,SUBSET FE-876E SPK NETWORK ASSY NSP864 4766SMN028A FELT DUCT(F515/717E) BLACK865 3091RMW013A CABINET ASSY FE-876E ORIGINAL NSP867 3530RMM005A GRILLE GRILLE METAL TW(FE-876E)2-92-10 BLOCK DIAGRAMAC 4.6V FOR FIP2-112-12 SCHEMATIC DIAGRAMS AMP/POWER SCHEMATIC DIAGRAM2-132-14 FRONT SCHEMATIC DIAGRAMNOTES : 1. Resistance values are indicted in ohms unless otherwise specified (K=1,000, M=1,000,000).2. Capacitance values are shown in microfarads unless otherwise (P=MICRO-MICRO FARADS).3. Schematic diagram for this model are subject to change for improvement without prior notice.2-152-16 TUNER SCHEMATIC DIAGRAMNOTES : 1. Resistance values are indicted in ohms unless otherwise specified (K=1,000, M=1,000,000).2. Capacitance values are shown in microfarads unless otherwise (P=MICRO-MICRO FARADS).3. Schematic diagram for this model are subject to change for improvement without prior notice.2-172-18 CDP SCHEMATIC DIAGRAM2-202-19 16P5P6P10P20P3P8P10P10PJK102JK601JK701JK602CN302PN801PN805PN803PN806CN806PN202PN201CN701PN701CN305PN302VR304T70110PCN703PN701PN80620PPN8044P2PPN802VR301CN702 3PPN702 3PPN301 17PVR302CN304WIRING DIAGRAMNOTES : 1. Wiring diagram for this model are subject to change for improvement without prior notice.2-212-22 PRINTED CIRCUIT DIAGRAM AMP/TUNER/POWER/DECK P.C. BOARD(COMPONENT SIDE) AMP/TUNER/POWER/DECK P.C. BOARD(SOLDER SIDE)2-232-24 2-252-26 FRONT P.C. BOARD(COMPONENT SIDE)2-272-28 FRONT P.C. BOARD(SOLDER SIDE)- 3-1 - - 3-2 -SECTION 3. EXPLODED VIEWS CABINET AND MAIN FRAME SECTION286287284458286264355267271262260454354352351A26A41257274291292272250310454305330451302354454454A43454A00285452288454451454301A46353278280279277452A48276303306451NOTE)Refer to SECTION 5 REPLACEMENTPARTS LIST in order to look for the part number of each part.3-33-4 TAPE DECK MECHANISM: AUTO REVERSE DECK400011503401401009010501502507508013406409410036032038034035039029040031028027026014015403504024025023405A01402022016017018019020021505007008003004005001002404400400506037006LOCA. NO PART NO. SPECIFICATIONA00 6730R-G007B CDM-H1323 CD CHANA01 6768R-UP01A 50-093-4249 PCB AS001 6768R-BP01B 02-084-4202 BELT/FELT002 6768R-BP01A 02-084-4204 BELT/FELT003 6768R-AP01D 50-239-4027 CWL44004 6768R-AP01E 50-239-4026 ARM005 6768R-SP01E 01-082-4654 SPRING 006 6768R-QP01A 50-093-4316 MOTOR007 6768R-GP01A 50-093-4063 GEAR 008 6768R-SP01F 01-082-4598 SPRING009 6768R-MP01C 50-219-4014 MOLD 010 6768R-SP01C 01-082-4652 SPRING011 6768R-SP01A 01-081-4601 SPRING013 6768R-SP01B 01-082-4651 SPRING014 6768R-SP01G 01-082-4597 SPRING015 6768R-AP01A 50-268-3016 ARM016 6768R-GP01C 50-093-4069 GEAR017 6768R-AP01C 50-239-4072 ARM 018 6768R-GP01D 50-222-4007 GEAR019 6768R-SP01H 01-081-4657 SPRING020 6768R-BP01C 02-083-4188 BELT/FELT021 6768R-LP01A 50-223-4254 PULLEY022 6768R-VP01A 50-093-4125 SOLENOID023 6768R-GP01B 50-221-3009 GEAR 024 6768R-AP01B 50-139-4292 ARM 025 6768R-JP01B 50-093-3361 PULLEY026 6768R-SP01D 01-080-4609 SPRING 027 6768R-DP01A 50-259-3342 LEVER 028 6768R-RP01A 22-027-41054 ROLLER029 6768R-MP01A 50-219-4033 MOLD 031 6768R-SP01L 01-080-4649 SPRING032 6768R-EP01A 50-093-4070 HEAD AY033 6768R-JP01A 50-093-3360 PULLEY034 6768R-SP01K 01-082-4650 SPRING035 6768R-PP01A 50-119-4046 PRESS036 6768R-PP01B 50-160-4108 PRESS037 6768R-JP01C 50-093-3315 PULLEY038 6768R-MP01D 50-219-4034 MOLD040 6768R-SP01M 01-080-4607 SPRING400 6768R-CP01A GSE10A2003 SCREW401 6768R-CP01B GSE20A2005 SCREW402 6768R-CP01C GSE10A2004 SCREW403 6768R-CP01D GSL10A1704 SCREW404 6768R-CP01E GSP10A2603 SCREW405 6768R-CP01F GSP11A2012 SCREW406 6768R-CP01G GSE20A2004 SCREW409 6768R-CP01L GSD10A2018 SCREW410 6768R-CP01M 03-300-4056 SCREW 501 6768R-WP01A GWM19S035035 WASHER502 6768R-WP01B GWM17S050035S WASHER503 6768R-WP01C GWM40X075010 WASHER504 6768R-WP01D GWP21X045020 WASHER505 6768R-WP01E GWP12X030040S WASHER506 6768R-WP01H GWP23X040020 WASHER507 6768R-WP01F GWN21X040040 WASHER508 6768R-WP01G GWM19X055035S WASHER3-53-6 TAPE DECK MECHANISM: AUTO STOP DECK(OPTIONAL)400011503401401009010501502013406409408407032031030029028401027026014015403504024025023405A01402022016017018019020021505007008003004005001002404400400006LOCA. NO PART NO. SPECIFICATIONA00 6730R-G007A CWL44FF25 TOKYO PIGEON L-DOUBLA01 6768R-UP01A 50-093-4249 PIGEON UNIT PCB AS001 6768R-BP01B 02-084-4202 PIGEON BELT / FELT C002 6768R-BP01A 02-084-4204 PIGEON BELT / FELT C003 6768R-AP01D 50-239-4027 PIGEON ARM CWL44004 6768R-AP01E 50-239-4026 PIGEON ARM CWL44005 6768R-SP01E 01-082-4599 PIGEON SPRING CWL4006 6768R-QP01A 50-093-4316 PIGEON MOTOR(ASSY)007 6768R-GP01A 50-093-4063 PIGEON GEAR CWL44008 6768R-SP01F 01-082-4598 PIGEON SPRING CWL4009 6768R-MP01C 50-219-4014 PIGEON MOLD CWL44010 6768R-SP01C 01-082-4652 PIGEON SPRING CWL4011 6768R-SP01A 01-081-4601 PIGEON SPRING CWL4013 6768R-SP01B 01-082-4651 PIGEON SPRING CWL4014 6768R-SP01G 01-082-4597 PIGEON SPRING CWL4015 6768R-AP01A 50-268-3016 PIGEON ARM CWL44016 6768R-GP01C 50-093-4069 PIGEON GEAR CWL44017 6768R-AP01C 50-239-4072 PIGEON ARM CWL44018 6768R-GP01D 50-222-4007 PIGEON GEAR CWL44019 6768R-SP01H 01-081-4657 PIGEON SPRING CWL4020 6768R-BP01C 02-083-4188 PIGEON BELT / FELT C021 6768R-LP01A 50-223-4254 PIGEON PULLEY / FLYW022 6768R-VP01A 50-093-4125 PIGEON SOLENOID CW023 6768R-GP01B 50-221-3009 PIGEON GEAR CWL44024 6768R-AP01B 50-139-4292 PIGEON ARM CWL44025 6768R-JP01B 50-093-3361 PIGEON PULLEY / FLYW026 6768R-SP01D 01-080-4609 PIGEON SPRING CWL4027 6768R-MP01B 50-093-3036 PIGEON MOLD CWL44028 6768R-RP01A 22-027-41054 PIGEON ROLLER CWL029 6768R-MP01A 50-219-4033 PIGEON MOLD CWL44030 6768R-HP01A TC881CB067B PIGEON HEAD CWL44031 6768R-SP01J 01-081-4605 PIGEON SPRING CWL4032 6768R-HP01B TC231F PIGEON HEAD CWL44033 6768R-JP01A 50-093-3360 PIGEON PULLEY / FLYW400 6768R-CP01A GSE10A2003 PIGEON SCREW CWL44401 6768R-CP01B GSE20A2005 PIGEON SCREW CWL44402 6768R-CP01C GSE10A2004 PIGEON SCREW CWL44403 6768R-CP01D GSL10A1704 PIGEON SCREW CWL44404 6768R-CP01E GSP10A2603 PIGEON SCREW CWL44405 6768R-CP01F GSP11A2012 PIGEON SCREW CWL44406 6768R-CP01G GSE20A2004 PIGEON SCREW CWL44407 6768R-CP01H GSL20A2005 PIGEON SCREW CWL44408 6768R-CP01J 03-300-4127 PIGEON SCREW CWL44409 6768R-CP01K GSL20A2008 PIGEON SCREW CWL44501 6768R-WP01A GWM19S035035 PIGEON WASHER CWL502 6768R-WP01B GWM17S050035S PIGEON WASHER CW503 6768R-WP01C GWM40X075010 PIGEON WASHER CWL504 6768R-WP01D GWP21X045020 PIGEON WASHER CWL505 6768R-WP01E GWP12X030040S PIGEON WASHER CW- 3-7 - - 3-8 - CD MECHANISM416151152155184185184A35421A30421168417417153159A26169154158157156418416419165162166420167177176164163175170171174416173172417NOTE)Refer to SECTION 5 REPLACEMENTPARTS LIST in order to look for the part number of each part.