Samsung MAX-632P Service Manual

Text of Samsung MAX-632P User Guide:

• Samsung MAX-632P, 6-2 Cassette Deck Block Main Function Check Point Check for voltage at pin32 1 P/B Deck : L 2 P/B DECK : H Check for pin 24 of FIC3 when deck operate Check for voltage at pin 28 When between song : High(Normal) When playing song : Low(Normal) Convert of P/B & R/P SIGNAL & DECK OUTPUT OF IC AMPS Convert P/B & Source Signal DOLBY NR AMP DIC1 (KA2271) BIAS OSC µ-com UIC1 VF DISPLAY Drive VF DISPLAY Oscillate RECORD BIAS (105KHz) Oscillate RECORD BIAS (105KHz) Control DECK MECHA Control VF DISPLAY Control MUTE circ

• Samsung MAX-632P, 6-3 CD 6-3-1 Revolution Malfunction Yes Check Deck down Check CLOSE S/W voltage. CLOSE condition: 0V Check CLOSE MOTOR and CLOSE S/W. Does Roulette revolve ? Check Roulette Motor. Yes Is Roulette Control ok ? No Check Roulette Control Sensor Is Focus Search ok ? No Check oscillation of NXF100 (16.9344MHZ) Does Laser function during Focus Search ? Replace PICK UP Replace NIC9220 or NIC9258 Yes POWER ON Check UP/DOWN MOTOR Replace NIC9282 Check NIC9282 pin73 voltage during Focus Search : 5V No Yes Yes No No Yes Yes No No Yes 6-6 Samsung Electronics Troubleshooting

• 5. Special Circuit Descriptions 5-1 CD 5-1-1 RF Amp (KA9220) : WIC01 5-1-2 Focus Error Amp (KA9220) : WIC01 5-1-3 Focus Servo System (KA9220) : WIC01 74 Photo Detector B CA D PD1 PD2 58K RF I-V AMP(1) 58K 10K R2 RF I-V AMP(2) V2 R1 10K RF SUMMING V1 AMP RFO RF 66 67 R3 75 RF I-V Amp(I-1) and RF I-V Amp (I-2) are converted to voltage (via internal resistance of 58k½) from the current o

• Samsung MAX-632P, No. Port Name I/O Function 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 S 18 19 20 21 22 23 24 25 26 27 28 29 30 31 P0 0 1 2 3 4 5 6 7 P1 0 1 2 3 4 5 6 7 P3 0 1 2 3 4 5 6 7 VSS VDD P4 0 1 2 3 4 5 6 7 P5 0 1 OPTION UD S/W FOK LKFS MLT MDATA MCK V10M - V10M + SUBQ SQCK DSP MT OPEN M CLOSE M ROUL - ROUL + ISTAT LD_XRS JOG 11 JOG 12 SLATCH SDATA VCLK CE 32 DO 3 CLK 3 CE 31 CE 23 SOL 1 SOL 2 MICSNS CE 21 DO 2 CLK 2 I I I I O O O O O I O O O O O O O O I

• Samsung MAX-632P, 9-8 Samsung Electronics Block Diagrams 42 41 40 39 38 37 36 35 34 33 32 32 31 30 29 28 27 26 25 24 23 22 CONTROL OSC DEVIDER LPF NOISE GENERAT NOISE FILTER NOISE CH VREF CONTROL BALANCE CONTROL VR CHDOE CTRIM MUTE VCA VCA VCA VCA 1 2 3 4 5 6 7 8 9 10 VR VR LPF LPF VCA VCA VCAVCA RECT RECT P.S. P.S. RECT RECT DUAL T CONTROL LOG DIFF LOG DIFF Vcc BABA BABA 11 12 13 14 15 16 17 18 19 20 21 BA BA Vcc LA2786: DPIC5

• Samsung MAX-632P, 32 OUT1 OUT2 VCC2 810 9 7 P1 P2 VCC1 4 V2 6 IN2IN1 GND 5 1 LB1641 Input logic circuit Predriver LB1641/BA6209 1 2 3 4 5 6 7 8 9 10 12 1113 14 15 16 17 1819 2 0 LPF OUTPUT2 LPF28 V REF RIPPLE DE-EMPHA CTL DE-EMPHA OUT2 DE-EMPHA IN2 BUFFER OUT2 INPUT2 LPF2 LPF1 GND LPF OUTPUT1 LPF1B MUTE CONTROL INPUT DE-EMPHA CONTROL INPUT DE-EMPHA CTL DE-EMPHA OUT1 DE-EMPHA IN1 BUFFER OUT1 INPUT1 1/2Vcc-AMP Vcc DE-AMP2 DE-AMP1 BUFFER2 BUFFER1 MUTE SW DE-EM SW 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 6 7 8 9 10 11 12 13 14 LEVEL SHIFT LEVEL SHI

• Samsung MAX-632P, 3 CD CHANGER MINI MINI COMPONENT MAX-632P SERVICE Manual 3CD CHANGER MINI COMPONENT 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. PCB Diagrams 11. Wiring Diagram 12. Schematic Diagrams

• Samsung MAX-632P, 9-4 µ-COM : UIC1 No. Port Name I/O Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 P5 2 PWM1 P2 0 1 2 3 4 5 6 7 TEST RES XT 1 XT 2 VSS CF 1 CF 2 VDD P8 0 1 2 3 4 5 6 7 P7 0 1 2 3 S 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 VDVP V S 16 17 POWER CE 22 AMPSIN INPUT EXP.DI POWER CLK4 DO 1 CLK 1 DI 1 CE 11 KEY 1 KEY 2 KEY 3 KEY 4 JOG 21 JOG 22 NAR EQ IN SCRO T SENS SCOR REMO O O I I O I O I I I I I I I I I I I I M65846(DSP+ECHO) LATCH LC7536(VOLUME IC)CE AMPS SIGNAL IN MAIN AUDIO MUTE(TUNER) TUNED MSM6654(

• 3-3 Cabinet-Rear and Main PCB 1. Remove 17 screws % and then lift the Cabinet-Rear ^ and slide it to rear to remove (see arrow). 2. Remove the Main-PCB &. 1. Remove 5 screws *. 2. Remove the Cabinet-Rear by pushing the ÒAÓ and ÒBÓ as shown. 7 6 5 5 A B 8 8 8 Figure 3-3 Figure 3-4 3-4 Cabinet-Front and Cabinet-Bottom Samsung Electronics 3-3 Di

• Samsung MAX-632P, Figure 3-2 Figure 3-2-1 3-2 Samsung Electronics 3-2 CD-Mecha, Door-CD Disassembly and Reassembly 2 TRAY 1 5 4 1. After power is connected : - Turn power on - Open the tray using the open/close key 2. After power is not connected : - Turn the Gear clockwise using the hand as shown in figure 3-2-1. - Pull the Tray in the direction of arrow @. 3. Remove 4 screws $,% and lift the CD-Mecha.

• Samsung MAX-632P, Figure 3-5 3-4 Samsung Electronics Disassembly and Reassembly 3-5 CD Mecha 13 8 2 7 6 5 4 9 3 1 10 17 16 12 11 20 15 21 14 19 CD SUB PCB TRAY DISC ASS'Y TRAY STOPPER CD MAIN PCB HOOK BASE MAIN 18 Refer to the next page for timming point

• Samsung MAX-632P, 4-2 Samsung Electronics Alignment and Adjustments 4-2 Cassette Deck 4-2-1 To Adjust Tape Speed 1) Measuring tape: i) MTT-111 (or equivalent) (Tapes recorded with 3kHz) ii) MTT-5512 (or equivalent) 2) Connect the cassette deck to the frequency counter as in figure 4-3. 1) Before the actual adjustment, clean the replay/recording head. 2) Measuring tape : i) MTT-114NA(or equivalent 12.5kHz AZIMUTH control) ii) MTT-150(or equivalent : Dolby level 200nwb/m) 3) Dolby NR SW OFF 4) The cassette deck is connections as shown in figure 4-5. Notes Notes NOR SPEED Control counter 1 2 OUT (connected to the frequency counter) Turn DSR5 to left and right 3KHz ±1% 5700 ~ 6300K

• 9-4 Samsung Electronics IIIIV REC EQ III IV REC EQ SYSTEM CONTROL COMP BC1 (TYPE II ) BC2 (TYPE IV ) BC NF BC OUT REC R OUT REC L OUT METAL A EQ (70/120) B EQ (70/120) SPEED (NS/HS) A/B ALC REC Mute PB Mute AMS OUT AMS T AMS NF AMSLPF BIAS Ucc REC L REC R BR BL AR AL REF GND N.C BPF L NF NFL2 NFL1 REC L NF REC L IN BPF R NF MFR2 MFR1 REC R NF REC R IN ALC T ALC L OUT ALC R OUT DET ALCRI

• Samsung MAX-632P, 1 3 4 5 6 7 8 9 10 20 30 31 32 33 34 35 36 37 38 39 40 41 42 21 22 25 25 26 26 29 11 12 13 14 15 16 17 18 19 43 44 46 47 48 49 PCB - MAIN POWER - CORD PCB - CD PCB - FRONT 45 PCB - DOLBY-PRO PCB - POWER 51 50 52 7-2 Main Exploded View and Parts List 7-2-1 Exploded View Exploded Views and Parts List Samsung Electronics 7-3

• Samsung Electronics 3-5 Disassembly and Reassembly 3-5 CD Mecha Continued 3-5-1 Tray Disassembly 3-5-2 Main Disassembly 3-5-3 CD Main PCB Disassembly *When removing, take extreme care not to damage the hook. 1. Open the Tray Disc AssÕy by turning the Gear-Load(%) in the direction of open,then remove the Wire-Tray(Q). 2. Remove two Tray-Stopper and tray. 1. Remove the Tray-Roulette(

• Samsung MAX-632P, Exploded Views and Parts List 7-4 Samsung Electronics 7-3 CD Mecha Exploded View and Parts List 13 8 2 7 6 5 4 9 3 1 10 17 16 12 11 20 15 21 14 19 CD SUB PCB TRAY DISC ASS'Y TRAY STOPPER CD MAIN PCB HOOK BASE MAIN 18 No. New Code No. Description Specification Old Code No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 19 20 21 AH66-80022A AH66-60034A AH66-20186A AH66-20187A AH66-20188A AH66-20189A AH66-20190A AH66-20191A AH59-10097A AH59-10098A AH69-20044A AH66-20193A AH66-90056A AH66-90055A AH59-10099

• Samsung MAX-632P, 6-1-3 Tuner Malfunction(FM/AM) MZD2 Voltage ok ? Yes Check TUNER IC(LA1836) pin 10 ; 8.6V pin 14 ; 7.2V AM ; 0V ? Yes LC72131 CONTROL ok? Yes FM VT LC72131 pin 20 1.7V 7.5V ?  Yes AM VT LC72131 pin 20 Check the LC72131 CONTROL ok? Yes Yes Check MIC2 pin 20 ? LPF(MLPF 1L/1R) output ok? Check TDA7318 function ok? Check FEP interior pattern, and any line disconnections. No Yes Check for µ-com IC Replace LC72131 No MZD1 (5.6V) Voltage ok? MIC2 (LC72131) FM/AM BAND Switching ok? No No No No No No No 0.9V 7V ? Check MZD2(8.2V),MR29 No 1) Power section defective? 2)LC72131 Oscillator (HX1:7.2MHz)ok

• Samsung MAX-632P, SCW2 3708-000507 CONNECTOR-FPC/FC/PIC;12P,1.25MM,ANG 3708-001131 CONNECTOR-FPC/FC/PIC;5P,1.25MM,STRA SCW1 3711-002579 CONNECTOR-HEADER;WALL,22P,1R,2.5MM, 3711-003379 CONNECTOR-HEADER;NOWALL,3P,1R,2.5MM SIC3 AC14-12001G IC;KA78L05,T,- SCW4 AH39-20025S LEAD-CONNECTOR,ASSY;-,51004-08,3502 16439-0291-00 SCW3

• Samsung MAX-632P, MC3 2203-000429 C-CERAMIC,CHIP;18PF,5%,50V,NPO,2012 11129-008-180 LC5 2203-000495 C-CERAMIC,CHIP;2.2NF,10%,50V,X7R,20 11129-004-222 FJC4L,4R,3,FDC2,3 FC11,12 2203-000533 C-CERAMIC,CHIP;2.7NF,10%,50V,X7R,20 11129-004-272 DC7L,7R,23,19,MC1,5,6 2203-000609 C-CERAMIC,CHIP;22NF,10%,50V,X7

• Samsung MAX-632P, AH26-80141B TRANS-POWER;EI85.8X57,115/230V,60/5 AH39-10002K POWER CORD;CP2,KLCE-2F,2.15M,5239,V A6006-0186 AH59-10096A REMOCON-ASSY;-,-,-,60,MAX632P,S.S 14539-504-030 CERAMIC-RESONATOR;CSB455EBL AH11-10003F IC-MASK ROM;BU2478,-,SOP AH59-90192F SPEAKER-SYSTEM;PS 632P,MAX632,ERP AH90-10722Q ASSY-MAIN PCB;MAX632P,SEG LD1L,1R,2L,2R,3L,3R,4,5,6 0401-000101 DIODE-SWITCHING;1N4148,100V,200MA,5 AD3,4,CD1,2,3

• DPR5,38 2001-000702 R-CARBON;39KOHM,5%,1/8W,AA,TP,1.8X3 11018-877-393 DPR21,24,SPR43L 2001-000734 R-CARBON;4.7KOHM,5%,1/8W,AA,TP,1.8X 11018-877-472 DPR43R DPR32R,26,19 2001-000786 R-CARBON;47KOHM,5%,1/8W,AA,TP,1.8X3 11018-877-473 DPR17,32 2001-000857 R-CARBON;560OHM,5%,1/8W,AA,TP,1.8X3

• Samsung MAX-632P, KS9282(DSP) : NIC9282 Samsung Electronics 9-11 Block Diagrams 68 69 37 36 9 8 70 76 75 73 72 2 4 3 5 80 78 67 66 26 32 33 7 19 206564636261 16 17 22 23 31 30 EFMI APDO VCOI1 VCOI2 CNTVOL DPFIN DPF OUT DPDO SMEF SMON SMDP SMSD LOCK XIN XOUT MLT MDAT MCK 38 TRCNT /ISTAT SQDT SQOK VREFH2 VREFH1 VREFL1 VREFL1 LCHOUT RCHOUT DATX TEST SEL4 SEL3 SEL2 SEL1 SOS1 SBCK SDAT SUBCODE SYNC DETECTOR SUBCODE OUTPUT SUBCODE Q REGISTER EFM MODULATOR 23 BITS SHIFT REGISTER EFM PHASE DETECTOR DPLL C L V SERVO E C C 10K SRAM 3R

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