Samsung MM-28 Service Manual
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Samsung MM-28 Service Manual

Samsung MM-28 Service Manual

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Table of Contents

SERVICE
MICRO COMPONENT SYSTEM
MICRO COMPONENT
SYSTEM
MM-28
Manual
CONTENTS

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Summary of Contents for Samsung MM-28

  • Page 1: Table Of Contents

    MICRO COMPONENT SYSTEM MM-28 SERVICE Manual MICRO COMPONENT SYSTEM CONTENTS 1. Precautions 2. Specifications 3. Disassembly and Reassembly 4. Alignment and Adjustments 5. Special Circuit Descriptions 6. Troubleshooting 7. Exploded Views and Parts List 8. Electrical Parts List 9. Block Diagrams 10.
  • Page 2 ELECTRONICS © Samsung Electronics Co.,Ltd. March 1998 Printed in Korea Code no. AH68-20188A...

  • Page 3: Precautions

    Examples: Handle brackets, Metal Part metal cabinets, screwheads and control shafts. The current measured should not Ohmmeter exceed 0.5 milliamp. Reverse the power- plug prongs in the AC outlet and repeat. Fig. 1-2 Insulation Resistance Test Samsung Electronics...

  • Page 4: Specifications

    Make sure that the 8. Always connect a test instrument's ground portion around the serviced part has not lead to the instrument chassis ground been damaged. before connecting the positive lead; always remove the instrument's ground lead last. Samsung Electronics...
  • Page 5 SCAN : Manufactured for Scandinavian KATSO SATEESEEN! Market. VARNING: OSYNLIG LASERSTRÅLNING NAR DENNA DEL AR OPPNAD OCH SPARREN AR URKOPPLAD BETRAKTA EJSTRÅLEN! Fig. 1-4 Warning Labels (Location: Disc Clamper, Inner Side of Unit Door or Nearby Unit Chassis ) Samsung Electronics...
  • Page 6 6. After replacing the Pickup, reopen the Short Terminal. See diagrams below: THE UNIT (1) WRIST-STRAP CONDUCTIVE SHEET FOR GROUNDING short short short short terminal terminal terminal terminal SOH-A1 SOH94T4N SOH91CI(CAR,walkman) (CMS-V10,CMS-V30) SOH91VI(LDP) (CMS-V10,CMS-V30) Samsung Electronics...
  • Page 7 40 dB Total harmonic distortion 2.5% 20Hz ~ 20KHz(±1dB) Frequency response 90 dB(1kHz) Signal to noise ratio Compact Disc 75 dB(1kHz) Channel separation 0.1%(1kHz) Total harmonic distortion 1V (1kHz 0dB) Audio Output Specifications are subject to change without notice. Samsung Electronics...
  • Page 8 Remote Control TIMER TIMER/ ON/OFF CLOCK...

  • Page 9: Disassembly And Reassembly

    3. Disassembly and Reassembly 3-1 Cabinet-Top, Cabinet-Rear 1. Remove 6 screws of ! and 7 screws of @ of its rear part 2. Pull its top part upward vertically as shown in the figure 3-1 Figure 3-1 Samsung Electronics...
  • Page 10 Disassembly and Reassembly 3-2 Main PCB 1. Pull out the Main-PCB backward horizontally. Figure 3-2 Samsung Electronics...
  • Page 11 Disassembly and Reassembly 3-3 Cabinet-Bottom 1. Remove 3 screws ! and pull it out backward. Figure 3-3 3-4 CD-Pack 1. Undo 4 screws of ! and then remove the CD-Pack downward. Figure 3-4 Samsung Electronics...
  • Page 12 Remove the Gear (c) ) by pushing the hook. Lift the Gear(b) 1. 11. Remove the Gear(a) 2. 11. Remove 2 screws 3 and the then remove the Feed-Motor 4. 12. Remove the Chassis-Deck (M) 5. Figure 3-8 Samsung Electronics...

  • Page 13: Alignment And Adjustments

    AM(MW) I.F Adjustment Output SSG FREQ. 450KHz AM Antenna SET FREQ. 522 KHz Adjustment AM SSG 450 KHz Speaker AM I.F COIL point Terminal (IFT1) Input Maximum output (Figure 4-3) Output VTVM Oscilloscope Figure 4-3 AM I.F Adjustment Samsung Electronics...
  • Page 14 Remark Connection See the Insert MTT-5512 Turn Bias oscillator diagram for Bias Figure 4-4 into Deck, then frequency coil(JT1) 85KHz ±5% adjustment press REC button to the right and left locations Oscilloscope VTVM Speaker Terminal (GND) Figure 4-6 Samsung Electronics...

  • Page 15: Special Circuit Descriptions

    Focus error bias can be adjusted from the range of +100mV ~ -100mV by connectiong the resistor with pin 63 (FEBIAS). 164K VB> VA> sev-stopb 160K FEBIAS sev-stop <5 Bit Counter> fcmpo FEBIAS fe-stopb Samsung Electronics...
  • Page 16 Extracting the DC part of RFI and RFO and comparing with the basic DC level, if RF Level is more than basic level, the FOK is output. The focus OK circuit generates a timing window of focus on to monitor the focus search status of focus serve. VC+0.625V Samsung Electronics...
  • Page 17 As the asymmertry due to variations in disc manufacturing can not be eilminated by thr AC coupling alone, the reference voltage of EFM comparator is controlled utilizing the fact that the generation probability of 1,0 50% each in the binary EFM signals. 100K 100K Samsung Electronics...
  • Page 18 Therefore, the output on processing monitor photo diode, must be a controlled current for getting regularly output power, thus the APC (Auto Power Control) circuit is composed. From Micom 150K 0.75K 43.5K 150K 300K 150K 5.15K LDON Samsung Electronics...
  • Page 19 If the control by MUTE signal from micom exist, and when input signal absent, two channel of right and left is builted in. CH2I CH2O GC2I GC2O GC1O GC1I GC1I CH1O MUTEI (From Micom) 5-1-11 Center Voltage Generation Circuit The Center Voltage is generated by using resistor dividing voltage. Samsung Electronics...
  • Page 20 After 10-track jumping, servo circuit gets out of the liner range and actuator,s tracking is unstable occasionally. Accordingly, unnecessary jumping with many tracking error should be prevented. 470K 680K 680K TDFCT DFCTI 66PF TRACKING 110K PHASE COMPENSATION 470K FSET Samsung Electronics...
  • Page 21 The characteristics of high frequency phase compensation in focus tracking servo and the characteristics of cut off frequecny in CLV low pass filter are test by FSET pin. SMON 220K 220K 100K SPDLO SMDP 220K 220K Double speed SPDL- SMEF FSET Samsung Electronics...

  • Page 22: Troubleshooting

    ? RD5,RZD2,RR2,3,4, oscillate ? (pin no. 27 ;5.0V) Front PCB When the power is Replace µ-com ON 'H' displays at pin no. 47 ?(5V) Connect Front PCB and Main PCB. Check the connector Main PCB. Wafer JCW2,UCW1 Samsung Electronics...
  • Page 23 Check the B+ power pin no.9 source part in RD1,2,3,4, B+ circuits Confirm for TR short Q2 Base B+ ? replace it. Is Mute selected ? Remove it with Remocon Replace Headphone jack Headphone Jack short ? soldering condition Samsung Electronics...
  • Page 24 LC72131 pin no.20 Control ok? 1.7V 7.5V? Replace LC72131 AM VT Check the LC72131 LC72131 pin no.20 Control ok? 0.9V Check HIC1 pin 20? LPF(IL1,IL2) Check FEP interior output ok? Check TDA7430 function ok? pattern, and any line disconnections Samsung Electronics...
  • Page 25 2 R/P Deck : L Check for voltage at pin6 AMPS IC JIC2 AMPS When between songs : High (Normal) (LA2010) When playing song :Low (Normal) Osc Frequency : 85KHz Oscillate RECORD BIAS (85KHz) BIAS OSC When inoperative : JQ5, JQ6 check Samsung Electronics...
  • Page 26 Check Roulette Control Sensor Check oscillation of NXF100 Is Focus Search ok ? (16.9344MHZ) Does Laser function during Replace PICK UP Focus Search ? Check NIC9286 pin73 voltage Replace NIC9286 during Focus Search : 5V Replace NIC9223 or NIC9258 Samsung Electronics...
  • Page 27 Troubleshooting 6-3-2 Audio Output Malfunction Malfunction of Audio Output Check voltage of NIC05 : 5V Replace NIC05 Check waveform of NIC9223 Check NIC9223 soldering pin no. 12,13 Replace NIC9223 Check waveform of NC55R,L Check NIC9223 soldering Check Amp Samsung Electronics...

  • Page 28: Exploded Views And Parts List

    HEAD ASS’Y (R/P) YK56RAA4N3 AH81-10798V SOLENOID ASS’Y ADR2100-10(24Ω) AH81-11052H CNTR ASS’Y(R/P) ADR2110TR2-01 AH81-10798H FLYWHEEL ASS’Y(F) ADR2100-04 AH81-10798J FLYWHEEL ASS’Y(R) ADR2100-05 AH81-10798K PINCH ARM(F) ADR2100-06 AH81-10798M PINCH ARM(R) ADR2100-07 AH81-10798N CLUTCH ASS’Y ADR2100-08 AH81-11052K MAIN BELT(R/P) ADR2110TR2-02 AH81-10798U SUB BELT ADR2100-09 Samsung Electronics...
  • Page 29 Exploded Views and Parts List 7-2 Main Exploded View and Parts List 7-2-1 Exploded View Option Samsung Electronics...
  • Page 30 AH61-62007A SPRING-CD DOOR -,-,SUS27,PI1.3,OD10,- AH61-20258C CAP-P/U ABS,-,BLK,- AJ59-20003E DECK-CDP CMS-P30AM6,-,-,- AH73-10012A RUBBER-CD SI RUBBER,-,CMS-M5M6C,BLU AH61-50182D SHAFT-CD -,MSWR,2.6,10.5,COATING,WHT AH64-32004C CABINET-REAR -,HIPS,94HB,T3,BLK,- AH62-32003A HEAT-SINK -,AL,-,T3.0,-,-,-,MM27 AH64-32006A CABINET-BOTTOM -,SECC,-,T1.0,-,-,-,MM27 AH73-10009A RUBBER(FOOT) URETAN,T1.5 PI8,MYCD25 AH59-10124F REMOCON BU2478-2Z,22,MM-28 AH63-30244D COVER-HIDDEN -,ABS 94HB,-,2,BLK AR4022 Samsung Electronics...
  • Page 31 ABS 94HB AH66-90029A TURN-TABLE(M) -,-,-,CMS-V30 AJ30-20001B PICK-UP CDP P/U SOH-A1 ROW V-P/J AH61-60055A SPRING-T/TABLE CS STS-W PI0.4 D5.7 L9.3 CMS-V10N AH31-10009A MOTOR-SPINDLE RF-310T-11400 43L 25V 85mA AH31-10002B MOTOR-FEED RF-310ta 30MM NDM4RA3ETL 11.0MM AH60-10014A SCREW-PH(+M2*3) +M2X3 FE FZY W700 Samsung Electronics...
  • Page 32 CABINET W138.5 X H233.5 X D180 AH81-11047D WOOFER 5`` SG12G33AFA AH81-11047Z SCREW M4 X 10 BLACK AH81-11047H CORD ASS’Y Ø0.18 X 20 X 2P X 2.5m AH81-11047J CORD CLIP Ø11.7X Ø17 X 13t AH81-11047L FOOT Ø10 X 1.5t Samsung Electronics...

  • Page 33: Electrical Parts List

    2203-000199 C-CERAMIC,CHIP;100nF,+80-20%,50V,Z5U,TP, NXF100 2802-000211 RESONATOR-CERAMIC;16.93MHz,0.5%,TP,10.0x NC905 2203-000260 C-CERAMIC,CHIP;10nF,10%,50V,X7R,TP,2012, AH93-20001P ASSY-CD MAIN,CHIP; ND200 0407-000101 DIODE-ARRAY;DA204K,20V,100mA,C2-3,SOT-2 ND201 0407-000101 DIODE-ARRAY;DA204K,20V,100mA,C2-3,SOT-2 G3X8,NON ADJUST NJR102 2007-000029 R-CHIP;0ohm,5%,1/10W,DA,TP,2012 NJR103 2007-000033 R-CHIP;0ohm,5%,1/8W,DA,TP,3216 IC9223 1204-001286 IC-ASP;KB9223,QFP,80P,-,PLASTIC,6V,20 NJR104 2007-000029 R-CHIP;0ohm,5%,1/10W,DA,TP,2012 IC9258 1003-000179 IC-MOTOR DRIVER;KA9258D,SOP,28P,-,SINGLE IC9286 0904-001159 IC-DSP;9286,8BIT,QFP,80P,-,1MHz,TR,CM Samsung Electronics...
  • Page 34 NC117 2301-000389 C-FILM,PEF;150nF,5%,50V,12.5x15x7.5,7mm, NL301 2703-000001 INDUCTOR-SMD;10uH,10%,2.5x3.2x2mm NC122 2401-001238 C-AL;4.7UF,20%,25V,GP,BK,3X5,1MM NC501 2401-000243 C-AL;100UF,20%,10V,GP,TP,6.3X5,2.5M NL302 3301-000325 CORE-FERRITE BEAD;AB,3.2X2.5X1.3MM,-,- NL303 2703-000001 INDUCTOR-SMD;10uH,10%,2.5x3.2x2mm NC55L 2401-001238 C-AL;4.7UF,20%,25V,GP,BK,3X5,1MM NQ1502 0501-000314 TR-SMALL SIGNAL;KSA812,PNP,150MW,SOT-23, NC55R 2401-001238 C-AL;4.7UF,20%,25V,GP,BK,3X5,1MM NR100 2007-000355 R-CHIP;12Kohm,5%,1/10W,DA,TP,2012 NC700 2401-000868 C-AL;220UF,20%,4V,GP,TP,6.3X5,2.5MM NR101 2007-000593 R-CHIP;22ohm,5%,1/10W,DA,TP,2012 Samsung Electronics...
  • Page 35 2001-000241 R-CARBON;1.5Kohm,5%,1/8W,AA,TP,1.8x3.2m 2201-000565 C-CERAMIC,DISC;47nF,20%,50V,Y5V,12.5X4.0 UR47 2001-000241 R-CARBON;1.5Kohm,5%,1/8W,AA,TP,1.8x3.2m 2401-000240 C-AL;100UF,20%,10V,GP,TP,6X11MM,5MM UR48 2001-000472 R-CARBON;2.7Kohm,5%,1/8W,AA,TP,1.8x3.2m 2201-000565 C-CERAMIC,DISC;47nF,20%,50V,Y5V,12.5X4.0 UR49 2001-000591 R-CARBON;3.3Kohm,5%,1/8W,AA,TP,1.8x3.2m 2001-000786 R-CARBON;47Kohm,5%,1/8W,AA,TP,1.8x3.2mm 2401-001102 C-AL;330UF,20%,16V,GP,TP,8X12,5 2201-000825 C-CERAMIC,DISC;27PF,5%,50V,CH,TP,5X5,5 UR50 2001-000802 R-CARBON;5.6KOHM,5%,1/8W,AA,TP,1.8X3.2M UD11 0402-000127 DIODE-RECTIFIER;1N4002,100V,1A,DO-41 UR51 2001-000241 R-CARBON;1.5Kohm,5%,1/8W,AA,TP,1.8x3.2m UD12 0402-000127 DIODE-RECTIFIER;1N4002,100V,1A,DO-41 UR52 2001-000241 R-CARBON;1.5Kohm,5%,1/8W,AA,TP,1.8x3.2m Samsung Electronics...
  • Page 36 R-CHIP;1Kohm,5%,1/10W,DA,TP,2012 AUR2L 2007-000001 R-CHIP;68Kohm,5%,1/10W,DA,TP,2012 JR16R 2007-000981 R-CHIP;5.6Kohm,5%,1/10W,DA,TP,2012 JR17L 2007-000409 R-CHIP;15Kohm,5%,1/10W,DA,TP,2012 AUR2R 2007-000001 R-CHIP;68Kohm,5%,1/10W,DA,TP,2012 JR17R 2007-000409 R-CHIP;15Kohm,5%,1/10W,DA,TP,2012 2203-000979 C-CERAMIC,CHIP;47nF,10%,50V,X7R,TP,2012, 2203-000979 C-CERAMIC,CHIP;47nF,10%,50V,X7R,TP,2012, JR19 2007-001039 R-CHIP;56Kohm,5%,1/10W,DA,TP,2012 2203-000979 C-CERAMIC,CHIP;47nF,10%,50V,X7R,TP,2012, JR1L 2007-000468 R-CHIP;1Kohm,5%,1/10W,DA,TP,2012 2007-000586 R-CHIP;22Kohm,5%,1/10W,DA,TP,2012 JR1R 2007-000468 R-CHIP;1Kohm,5%,1/10W,DA,TP,2012 JR22 2007-001071 R-CHIP;6.8Kohm,5%,1/10W,DA,TP,2012 2007-000300 R-CHIP;10Kohm,5%,1/10W,DA,TP,2012 Samsung Electronics...
  • Page 37 0402-000157 DIODE-RECTIFIER;1N5402,200V,3A,DO-201AD LR5R 2007-000493 R-CHIP;2.2Kohm,5%,1/10W,DA,TP,2012 0402-000157 DIODE-RECTIFIER;1N5402,200V,3A,DO-201AD QC13 2203-000199 C-CERAMIC,CHIP;100nF,+80-20%,50V,Z5U,TP, QC14 2203-000892 C-CERAMIC,CHIP;4.7nF,10%,50V,X7R,TP,2012 RIC1 1203-000166 IC-POSI.ADJUST REG.;3950,SIP,12P,-,PLAST QC15 2203-000609 C-CERAMIC,CHIP;22nF,10%,50V,X7R,TP,2012, AH90-10744X ASSY-MAIN,TAPG;MM28,MAIN AUTO QC16 2203-000609 C-CERAMIC,CHIP;22nF,10%,50V,X7R,TP,2012, QC20 2203-000199 C-CERAMIC,CHIP;100nF,+80-20%,50V,Z5U,TP, AC2L 2401-001917 C-AL;1UF,20%,50V,-,TP,5X7MM,5 QC23 2203-001036 C-CERAMIC,CHIP;5.6nF,10%,50V,X7R,TP,2012 AC2R 2401-001917 C-AL;1UF,20%,50V,-,TP,5X7MM,5 Samsung Electronics...
  • Page 38 C-AL;10UF,20%,16V,-,TP,4X7MM,5 JQ2L 0501-000398 TR-SMALL SIGNAL;KSC945,NPN,250mW,TO-92,T IC20 2401-001917 C-AL;1UF,20%,50V,-,TP,5X7MM,5 JQ2R 0501-000398 TR-SMALL SIGNAL;KSC945,NPN,250mW,TO-92,T IC23 2401-000303 C-AL;100uF,20%,25V,GP,TP,6.3x11,2.5 JQ3L 0501-000407 TR-SMALL SIGNAL;KSD471A-Y,NPN,800mW,TO-9 IC26 2401-001904 C-AL;10UF,20%,16V,-,TP,4X7MM,5 JQ3R 0501-000407 TR-SMALL SIGNAL;KSD471A-Y,NPN,800mW,TO-9 IC27 2401-001952 C-AL;4.7UF,20%,50V,-,TP,6.3X7,5 0501-000307 TR-SMALL SIGNAL;KSA733-G,PNP,250mW,TO-92 IC28 2401-001952 C-AL;4.7UF,20%,50V,-,TP,6.3X7,5 0501-000610 TR-SMALL SIGNAL;KSA928A-Y,PNP,1W,TO-92L, Samsung Electronics...
  • Page 39 COIL-SPRING;,2.2uH,-,-,SPRING 2007-000766 R-CHIP;330ohm,5%,1/10W,DA,TP,2012 AL1R AH27-90001B COIL-SPRING;,2.2uH,-,-,SPRING 2401-000303 C-AL;100uF,20%,25V,GP,TP,6.3x11,2.5 AL3L AH27-90001B COIL-SPRING;,2.2uH,-,-,SPRING 2401-001912 C-AL;1uF,20%,50V,GP,5x11mm,2mm,BK AL3R AH27-90001B COIL-SPRING;,2.2uH,-,-,SPRING 2203-000239 C-CERAMIC,CHIP;100pF,5%,50V,NPO,TP,2012, BL1/2 AH27-80060B COIL-OSC;RBQ-07VB,393UH,MW/LW-RF 2401-001912 C-AL;1uF,20%,50V,GP,5x11mm,2mm,BK 2401-001975 C-AL;47UF,20%,16V,GP,TP,5X11MM,5 3716-000198 TERMINAL-BLOCK;NON SOLDER,3P,4mm,-, 2203-000595 C-CERAMIC,CHIP;220pF,5%,50V,NPO,TP,2012, AH40-10001T TUNER;FE415-G11,-,75OHM 2401-001912 C-AL;1uF,20%,50V,GP,5x11mm,2mm,BK AH26-10001A TRANS-IF;FV-AD-BASE19K/38K,LOW PASS FILT Samsung Electronics...
  • Page 40 Code no. Description & Specifiation Remarks Location no. Code no. Description & Specifiation Remarks 2401-001975 C-AL;47UF,20%,16V,GP,TP,5X11MM,5 2401-001912 C-AL;1uF,20%,50V,GP,5x11mm,2mm,BK 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,500mW, 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,500mW, 0501-000398 TR GENERAL ; KSC945,NPN,60V,50V,150mA,25 0501-000398 TR GENERAL ; KSC945,NPN,60V,50V,150mA,25 MR11 2007-000872 R-CHIP;4.7Kohm,5%,1/10W,DA,TP,2012 2007-000518 R-CHIP;2.7Kohm,5%,1/10W,DA,TP,2012 2007-000586 R-CHIP;22Kohm,5%,1/10W,DA,TP,2012 Samsung Electronics...

  • Page 41: Block Diagrams

    9.Block Diagrams 9-1 Main Samsung Electronics...
  • Page 42 Block Diagrams 9-2 CD VREF LOCK.SMEF.WDCH.SMON.SMSD RESET MCK. MDATA. MLT ISTAT SQDT. LKFS. SOS1 SQCK R-CH A. GND L-CH Samsung Electronics...
  • Page 43 Block Diagrams 9-3 IC & TR Internal Diagrams 9-3-1 Main LA1836 : IIC1 DECODER RF AMF STERO DUFF STEREO DRIVE TRIG MUTE SMFT AM/FM COMP PILOT LEVEL AM/FM BUFF S-CURVE TUNING PHASE DET DRIVE TDA7265 : AIC1 Samsung Electronics...
  • Page 44 PBOUT(2) INPUT INPUT REC IN(2) REC.BIAS RECORD LREF PB.BIAS MODE CONTROL PLAYBACK /BIAS CIRCUIT LREF REC GND INPUT REC IN(1) PB OUT(1) INPUT REC IN(1) 100K 100K PB IN(1) PB GND MUTE NF(1) IN(1) OUT(1) BA3950 : RIC1 Samsung Electronics...
  • Page 45 Block Diagrams BA4560 : LIC1,MIC1(OPTION) Samsung Electronics...
  • Page 46 H H z z S S T T E E R R E E O O M M H H z z D D I I S S C C A A L L L L Samsung Electronics...
  • Page 47 OUT1 OUT2 VCC1 8 10 Input logic circuit LB1641 KA9258 : NIC9258 28 27 26 25 24 23 22 21 20 19 18 17 16 15 REGULATOR T • S • D MUTE 10 11 12 13 14 Samsung Electronics...
  • Page 48 CONTVOL DPLL DPFIN FRAME SYNC DETECTOR DPFOUT PROTECTOR DPDO INSERTOR SMEF SMON CLV SERVO SMDP SMSD SRAM LOCX X-TAL XOUT TIMING OSCILATOR SRAM ADDRESS MDAT TRACK CENERATOR INTERFACE COUNTER DSPEED CNIN /ISTAT INTERPOLATOR MODE DIGITAL DSPEED OUTPUT SELECTOR Samsung Electronics...
  • Page 49 FS1 to TM to BAL1 to PS1 to GA1 to Equalizer SPDL- BAL5 Spindle Servo LPF (Double Speed) SMDP SMON SMEF Comparator FSET MIRROR MIRROR DETECTION CIRCUIT Defect Dectection Built-in Post Filter Amp (L&R) Circuit FOK DETECTION CIRCUIT Samsung Electronics...
  • Page 50 PORT of GRID CONTROL FLT PORT of GRID CONTROL FLT PORT of GRID CONTROL FLT PORT of GRID CONTROL FLT POWER INPUT CONTROL PORT (5V) VdVp POWER INPUT GRID CONTROL PORT (-30V) PORT of SEGMENT CONTROL FLT PORT of SEGMENT CONTROL FLT Samsung Electronics...
  • Page 51 POWER INPUT PORT OF MAIN (5V) CRO2 CRO2 INPUT R/REC TAPE R/REC 3S/LED 3S SURROUND LED ACTIVE “H” POWER POWER ON/OFF ACTIVE “H” TA/MUTE TAPE MUTE ACTIVE “H” REC/MUTE REC MUTE ACTIVE “H” CRO2/OUT CRO2 OUTPUT ACTIVE “H” 9-10 Samsung Electronics...
  • Page 52 VSSA Analog VSS for servo part Micom clock input pin MDATA Micom data input pin Micom data latch input pin RESET Reset input pin MIRROR The mirror output for test The output pin of focus OK comparator Samsung Electronics 9-11...
  • Page 53 The input pin for AGC The output pin for AGC The input pin for EFM comparating CAGC The capacitor connection pin for AGC Feedback input pin of E I/V amplifier for EF Balance control GND for RF part 9-12 Samsung Electronics...
  • Page 54 Mute control input (“H”: Mute ON) Latch Signal input from Micom (Schmit Trigger) MDAT Latch Signal input from Micom (Schmit Trigger) Latch Signal input from Micom (Schmit Trigger) SRAM data I/O port8 (MSB) SRAM data I/O port7 Samsung Electronics 9-13...
  • Page 55 Spindle Motor drive (Velocity control in the PHASE mode) BCKI Audio data bit clock input of 48 bit/Slot (2.1168MHz) TESTV TEST input terminal (GND connection) DSPEED TEST input terminal (VDD connection) LRCHI Channel clock input of 48 bit/Slot (44.1KHz) 9-14 Samsung Electronics...

  • Page 56: Pcb Diagrams

    10. PCB Diagrams 10-1 Main Samsung Electronics 10-1...
  • Page 57 PCB Diagrams 10-2 Front 10-2 Samsung Electronics...
  • Page 58 PCB Diagrams 10-3 CD 10-3-1 Main Samsung Electronics 10-3...

  • Page 59: Wiring Diagram

    11. Wiring Diagram Samsung Electronics 11-1...

  • Page 60: Schematic Diagrams

    12. Schematic Diagrams 12-1 Main OPTION/BOARD(DOMESTIC) MIC1 MIC1 IIC1 LA1836 JIC1 KA22291 RIC1 BA3950 QIC1 TDA7430 JIC2 LA2010 LIC1 LIC1 TAPE/BOARD Samsung Electronics 12-1...
  • Page 61 Schematic Diagrams 12-2 Front UIC1 LC866232A 12-2 Samsung Electronics...
  • Page 62 Schematic Diagrams 12-3 CD G3X8(KB9223 + KS9286) SCHEMATIC DIAGRAM NIC9223 NCW100 KB9223 ASSP NIC9286 KS9286 DSP&D/ACON NIC9258 KA9258 1-CD 3-CD NIC1641/SIC2 SIC1 LB1641 NCW104 Samsung Electronics 12-3...
  • Page 63 Voltage Table KB9223 KA9258 KB9223 KB9223 KB9223 IC Name IC Name STOP MODE PLAY MODE STOP MODE STOP MODE PLAY MODE STOP MODE PLAY MODE STOP MODE PLAY MODE PLAY MODE 2.5V 4.5V 2.5V 4.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 4.5V...

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