Samsung MM-18 Service Manual Download Page 14

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4-2

Samsung Electronics

4-1-1 Test Equipment

4-1-2 Pre-Adjustment

4-1-3 AM Adjustment

1. AM Standard Signal Generator (S.S.G) : 400Hz, 30% MOD
2. Oscilloscope
3. VTVM
4. Frequency counter
5. Loop antenna
6. Dummy load (4½)
7. DC voltmeter

1. Check the source voltage
2. Press TUNER/BAND to select the AM(MW) function.
3. Set the volume control to mid position.

Intermediate
frequency (IF)
adjustment

AM frequency
coverage
adjustment

AM tracking
adjustment

Figure 4-4
Connect DC
voltmeter to AM VT
and GND(OKV1)

Figure 4-5

450 KHz

594 KHz

Figure 4-4

SET

60 cm

AM Signal
Generator

Test Loop
Antenna

Speaker
Terminal

VTVM

OUT

GND

Oscilloscope

AM
Loop
Antenna Jack

Figure 4-5

SET

AM VT(OR1)

OKV1 GND

Input

DC Voltmeter

594 KHz

OL 1

522 KHz

IT 2

OT 1

0.9V

Maximum output

Non Adjust

Remark

FREQ. Setting Adjust. Point

SSG.FREQ.

Item

Step

Connection

Alignment and Adjustments

mm18(5) 3/23/98 3:03 PM Page 2

Summary of Contents for MM-18

Page 1: ...ons 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 mm18 10 3 23 98 2 32 PM Page 1 ...

Page 2: ...ELECTRONICS Samsung Electronics Co Ltd March 1998 Printed in Korea Code no AH68 20183A mm18 10 3 23 98 2 32 PM Page 2 ...

Page 3: ... and Underwriters Laboratories UL Publication UL1410 59 7 With the unit completely reassembled plug the AC line cord directly into a 120V AC outlet With the unit s AC switch first in the ON position and then OFF measure the current between a known earth ground metal water pipe etc and all exposed metal parts Examples Handle brackets metal cabinets screwheads and control shafts The current measured...

Page 4: ... power cord from the AC power source before attempting to a Remove or reinstall any component or assembly b Disconnect an electrical plug or connector c Connect a test component in parallel with an electrolytic capacitor 3 Some components are raised above the printed circuit board for safety An insulation tube or tape is sometimes used The internal wiring may be clamped to prevent contact with the...

Page 5: ...all it Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam aluminum foil or other conductive materials 8 Immediately before removing the protective material from the leads of a replacement ESD touch the protective material to the chassis or circuit assembly into which the device will be installed 9 Minimize body motions when handing unpackaged re...

Page 6: ... this procedure 2 Place a conductive sheet on the work bench i e the black sheet used for wrapping repair parts Note The surface of the work bench should be covered by a copper ground plane which is grounded 3 The repair technician must wear a wrist strap which is grounded to the copper sheet 4 To remove the Optical Pickup block Place the set on the conductive sheet and momentarily touch the condu...

Page 7: ...tio Total harmonic distortion Frequency range WOW FLUTTER Erasing effect Signal to noise ratio Total harmonic distortion Frequency response Signal to noise ratio Channel separation Total harmonic distortion Audio Output 125Hz 10KHz 0 35 55 dB 40 dB 2 5 20Hz 20KHz 1dB 90 dB 1kHz 75 dB 1kHz 0 1 1KHz 1V 1kHz 0dB Frequency range Usable sensitivity Signal to noise ratio 146 290KHz 63 dB 31 dB 87 5 108M...

Page 8: ...Remote Control mm18 10 3 23 98 2 48 PM Page 2 ...

Page 9: ...assembly 3 1 Cabinet Top Cabinet Rear 1 Remove 6 screws of and 8 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 3 1 mm18 10 3 23 98 2 54 PM Page 1 ...

Page 10: ...Figure 3 2 3 2 Samsung Electronics 3 2 Main PCB Disassembly and Reassembly 1 Pull out the Main PCB backward horizontally mm18 10 3 23 98 2 54 PM Page 2 ...

Page 11: ...ttom 1 Pull out the Cabinet Bottom backward 1 Undo 4 screws of and then remove the CD Pack downward Figure 3 3 Figure 3 4 3 4 CD Pack Samsung Electronics 3 3 Disassembly and Reassembly mm18 10 3 23 98 2 54 PM Page 3 ...

Page 12: ...e the Center Ring 5 Remove the Spring T Table 6 Remove the Turn Table M 7 Remove 2 screws and then remove the Spindle Motor 8 Remove the Cover Gear by pushing the hook 9 Remove the Gear c by pushing the hook 10 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 Disassembly and Reassembly 4 6 7 13 2 1 9 10 11 12 14 15 8 ...

Page 13: ...of LCD is lighted Figure 4 2 Figure4 2 FM Auto Search Level Adjustment Figure4 3 FM Stereo Separation Adjustment Figure4 1 IF CENTER and THD Adjustment SSG FREQ Adjustment point ISVR2 98 MHz BEACON SENSITIVITY SEMI VR 50KΩ FM SSG FM SSG 75Ω Dummy 5KΩ Stereo Modulator Pilot 10 OUT Oscilloscope FM antenna SET Speaker Terminal EXT GND VTVM GND 22 dB FM SSG Output GND Speaker Terminal FM Antenna Termi...

Page 14: ...F adjustment AM frequency coverage adjustment AM tracking adjustment Figure 4 4 Connect DC voltmeter to AM VT and GND OKV1 1 2 4 5 3 Figure 4 5 Figure 4 5 450 KHz 594 KHz Figure 4 4 SET 60 cm AM Signal Generator Test Loop Antenna Speaker Terminal VTVM IN OUT GND Oscilloscope AM Loop Antenna Jack Figure 4 5 SET AM VT OR1 OKV1 GND Input DC Voltmeter 594 KHz OL 1 522 KHz 522 KHz IT 2 OT 1 0 9V Maximu...

Page 15: ...mum output and identical phase of L R channel Set the screw after adjustment Remark Adjustment Point Location no Item Step Tape Insert MTT 111 to Deck Press PLAY button Insert MTT 113CN to Deck Press PLAY button AZIMUTH DECK adjustment TP3 Cassette Deck Speaker Terminal output LINE OUT Frequency Counter Figure 4 6 Figure 4 7 Recording Play head REVERSE PLAY AZIMUTH control knob Figure 4 8 In Out S...

Page 16: ...added to RF summing Amp The photo diode A B C D signal which is I V changed is outputted by RFO pin74 At this pin the eye pattern can be checked The output of the focus error amp is the difference between RF I V AMP 1 output Va and RF I V AMP 2 output Vb just is the Photo Diode A C B D signal which is I V changed The focus error bias voltage applied to the of focus error amp can be changed by D A ...

Page 17: ... E I V AMP and the tracking gain Pin TE1 can be adjusted automatically by micom program 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 79 68 67 F E EI TGFI BAL 4 0 GAIN 3 0 from Digital TGL TGH TE1 LPFT BALL...

Page 18: ... on disc ÒHÓ when the defect beyond 1 4ms is detected The time constant for the mirror hold must be sufficiently large than of the traverse signal The EFM comparator converts a RF signal into a binary signal 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 gener...

Page 19: ...ng and shifting the level both signals are compared to generate the mirror defect detection signal As the laser diode has large negative temperature characteristic in its optical output when driven with a constant current on laser diode 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 c...

Page 20: ... RFO level is kept stable in 1Vp p and input to EFM Slice The adjustment of audio output gain and the integration of possible de emphasis output are executed by the low pass filter If the control by MUTE signal from micom exist and when input signal absent two channel of right and left is builted in The Center Voltage is generated by using resistor dividing voltage 75 78 76 IRF CAGC ARF EQUALIZE V...

Page 21: ...on of defect the tracking error signal is output through the tracking servo loop after through the low pass filter formed by connecting a capacitor 0 1µF and a built in 470K resistor to the TDFCT pin pin57 in case of tracking phase compensation The value of tracking gain up down can be controlled by TGU and TG2 pin The peak frequency of tracking loop phase compensation the dynamic range and offset...

Page 22: ...ter further 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 The moving of pick up is controlled by tracking servo output through low pass filter The sled kick voltage is output for track jump operation 43 42 44 TM6 TM2 SL SL SLO PS 4 3 0 X1 0 0 X2 1 1 X3 0 1 X4 1 TM7 22K 22K 15...

Page 23: ...IC1 LC72362 is at 5V Connection and soldering of SCON1 2 are normal Voltages at RQ701 RQ702 are normal Replace RQ701 RQ702 Voltages at RQ703 is normal Replace RQ703 Check Voltage at RIC1 Samsung Electronics 6 1 6 Troubleshooting 6 1 Amplifier 6 1 1 Power Malfunction mm18 3 23 98 3 47 PM Page 1 ...

Page 24: ... UCON1 FCON1 soldering of pin 77 of LC72362 Yes No No Check pump charge circuitry OQ5 OQ4 connection of SCON1 UCON1 soldering of pin77 of LC72362N Yes Voltage at LA1851N IIC1 and tuner semi conductors are normal Refer to Schematic Diagram Voltage between Check loop antenna soldering and connection of OL1 OL2 OT1 OT2 IT2 Check voltage at power supply section VT AM MW Low coverage 0 9V 0 1 LW Low co...

Page 25: ...e occurs at pin3 22 with volume control at mid position Noise occurs at pins1 24 Check function selector section No Yes Yes Yes No Speaker connections are normal all pins of AIC601 TA8207 are normal Refer to Schematic Diagram Voltage at base of QQ503 QQ553 C945 is less than 0 6V Pattern Speaker Jack normal Check power supply section Check Muting circuitry Voltages to Samsung Electronics 6 3 Troubl...

Page 26: ... 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 NIC9223 or NIC9258 Yes POWER ON Check UP DOWN MOTOR Replace NIC9286 Check NIC9286 pin73 voltage during Focus Search 5V No Yes Yes No No Yes Yes No No Yes 6 4 Samsung Electronics Troubleshooting mm18 3 23 98 3 47 PM Page 4 ...

Page 27: ...k waveform of NIC9223 pin no 12 13 Check NIC9223 soldering Check waveform of NC55R L Replace NIC9223 Check NIC9223 soldering Yes Replace NIC05 Check Amp Malfunction of Audio Output Yes Yes Yes No No Samsung Electronics 6 5 Troubleshooting mm18 3 23 98 3 47 PM Page 5 ...

Page 28: ...10026V AH81 10026H AH81 10025U DECK CASSETTE PACK SPRING TAKE UP REEL ASS Y PINCH ARM ASS Y IDLER ARM ASS Y FLYWHEEL GEAR S ASS Y MOTOR F R ARM ASS Y SUPPLY REEL GEAR ASS Y PAUSE CAP PAUSE LOCK CAM HEAD BASE M REC SAFETY LEVER EJECT LEVER F CAM GEAR F F GEAR SENSOR ARM LEAF SW MAIN R P HEAD E HEAD BELT MAIN BELT SUB BUTTON KNOB ADR2083FRU 51299 02506XC ADR28 010 ADR26 001 ADR02 042 ADR15 021 EG530...

Page 29: ...40 7 2 Main Exploded View and Parts List 7 2 1 Exploded View Exploded Views and Parts List 7 2 Samsung Electronics mm18 3 23 98 3 55 PM Page 2 ...

Page 30: ...AUSE DECK CASSETTE DAMPER ASSY KNOB VOLUME FILTER LCD HOLDER LCD SWITCH LEAF LEVER EJECT CABINET TOP SPRING KNOB CD KNOB CD EJECT SHEET CHUCK CHUCK PLATE DOOR CD WINDOW CD SPRING CD DOOR CAP P U DECK CDP RUBBER CD SHAFT CD CABINET REAR HEAT SINK CABINET BOTTOM RUBBER FOOT REMOCON ASSY COVER HIDDEN HIPS 94HB T2 5 BLK PMMA T2 5 SMOGE PMMA CLEAR MM18 ABS 94HB T3 0 ABS 94HB BLK MM 17 PMMA T2 5 SMOGE M...

Page 31: ...K CD CHASSIS DECK M COVER GEAR GEAR A GEAR B GEAR C SHAFT PU CENTER RING CENTER KNOB TURN TABLE M PICK UP CDP SPRING T TABLE MOTOR SPINDLE MOTOR FEED SCREW PH M2 3 CMS P30NM6 CMSA30 POM M90 44 CMS V30 BLK ABS CMS V30 M0 3 Z13 SP POM CMS V30 M0 3 Z13 SP POM CMS V30 M0 3 Z16 Z90 SP POM CMS V30 D3 L79 SUS420J2 ABS GS 20 CMS V10N ABS 94HB CMS V30 P U SOH A1 ROW V P J CS STS W PI0 4 D5 7 L9 3 CMS V10N ...

Page 32: ...tion Specification Remarks 1 2 3 4 5 AH59 90230A AH81 11047A AH81 11047B AH81 11047C AH81 11047D AH81 11047Z SPEAKER SYSTEM NET L NET R CABINET WOOFER SCREW PS17E MM17 157 X 247 2 X 38 4t 157 X 247 2 X 38 4t W138 5 X H233 5 X D180 5 SG12G33AFA M4 X 10 BLACK 7 4 2 Parts List 3 4 5 1 2 mm18 3 23 98 3 55 PM Page 5 ...

Page 33: ...001912 C AL 1uF 20 50V GP 5x11mm 2mm BK AC602 2202 000850 C CERAMIC MLC AXIAL 2 2NF 30 16V Y5R TP AC603 2401 001895 C AL 100uF 20 16V GP 6 3x11mm 2 5m AC604 2401 001465 C AL 47UF 20 10V GP 5X11 2MM AC605 2401 000303 C AL 100uF 20 25V GP TP 6 3x11 2 5 AC606 2301 000387 C FILM PEF 150nF 10 50V 12 5x15x7 5 7mm AC608 2401 001113 C AL 330UF 20 25V GP 10X12 5 5MM AC611 2202 000781 C CERAMIC MLC AXIAL 10...

Page 34: ... 000449 R CARBON 2 2Kohm 5 1 8W AA TP 1 8x3 2m JR302 2001 000429 R CARBON 1Kohm 5 1 8W AA TP 1 8x3 2mm JR303 2001 000890 R CARBON 6 8Kohm 5 1 8W AA TP 1 8x3 2m JR304 2001 000325 R CARBON 120ohm 5 1 8W AA TP 1 8x3 2mm JR305 2001 000429 R CARBON 1Kohm 5 1 8W AA TP 1 8x3 2mm JR307 2001 000429 R CARBON 1Kohm 5 1 8W AA TP 1 8x3 2mm JR308 2001 000734 R CARBON 4 7Kohm 5 1 8W AA TP 1 8x3 2m JR309 2001 000...

Page 35: ...AMIC MLC AXIAL 100NF 80 20 50V Y5 QC560 2202 000780 C CERAMIC MLC AXIAL 100NF 80 20 50V Y5 QQ501 0504 001003 TR DIGITAL KSR2003 PNP 300MW 22K 22K TO QQ502 0501 000398 TR SMALL SIGNAL KSC945 NPN 250mW TO 92 T QQ503 0501 000398 TR SMALL SIGNAL KSC945 NPN 250mW TO 92 T QQ553 0501 000398 TR SMALL SIGNAL KSC945 NPN 250mW TO 92 T QR502 2001 000472 R CARBON 2 7Kohm 5 1 8W AA TP 1 8x3 2m QR503 2001 000802...

Page 36: ...W UD16 0401 000101 DIODE SWITCHING 1N4148 100V 200mA 500mW UD17 0401 000101 DIODE SWITCHING 1N4148 100V 200mA 500mW UD7 0401 000101 DIODE SWITCHING 1N4148 100V 200mA 500mW UD8 0401 000101 DIODE SWITCHING 1N4148 100V 200mA 500mW ULED2 0601 000185 LED ROUND ORG 3 1mm 610nm UQ1 0501 000303 TR SMALL SIGNAL KSA733 Y PNP 250mW TO 92 UQ5 0504 000122 TR DIGITAL KSR1009Y NPN 300mW 4 7K TO 92 UR11 2001 0007...

Page 37: ...0 50V X7R TP 2012 NC113 2203 000260 C CERAMIC CHIP 10nF 10 50V X7R TP 2012 NC115 2203 001137 C CERAMIC CHIP 68NF 80 20 50V Y5V TP 2 NC116 2203 000260 C CERAMIC CHIP 10nF 10 50V X7R TP 2012 NC118 2203 000787 C CERAMIC CHIP 330pF 5 50V NPO TP 2012 NC119 2203 000199 C CERAMIC CHIP 100nF 80 20 50V Z5U TP NC120 2203 000199 C CERAMIC CHIP 100nF 80 20 50V Z5U TP NC121 2203 000199 C CERAMIC CHIP 100nF 80 ...

Page 38: ...IP 100Kohm 5 1 10W DA TP 2012 NR111 2007 000941 R CHIP 47Kohm 5 1 10W DA TP 2012 NR112 2007 001039 R CHIP 56Kohm 5 1 10W DA TP 2012 NR113 2007 001177 R CHIP 8 2Kohm 5 1 10W DA TP 2012 NR114 2007 000477 R CHIP 1Mohm 5 1 10W DA TP 2012 NR115 2007 000444 R CHIP 180Kohm 5 1 10W DA TP 2012 NR116 2007 001195 R CHIP 820Kohm 5 1 10W DA TP 2012 NR117 2007 000898 R CHIP 430Kohm 5 1 10W DA TP 2012 NR118 2007...

Page 39: ...R FUSIBLE 2 2ohm 5 1 4W AA TP 2 6x6 7mm AJ59 20003E DECK CDP CMS P30AM6 CMSP30AM6 DECK CD BASIC Electrical Parts List Location no Code no Description Specifiation Remarks Location no Code no Description Specifiation Remarks Samsung Electronics 8 7 mm18 bom 3 23 98 4 08 PM Page 7 ...

Page 40: ...Samsung Electronics 9 1 IIC1 UIC1 UIC2 AIC601 QIC501 JIC301 9 Block Diagrams 9 1 Main mm18 10 3 23 98 4 17 PM Page 9 1 ...

Page 41: ...NTROL S W SENSOR FOK MAIN PCB MAIN PCB MICOM CTRL LINE POWER AUDIO LINE 10 1 11 2 19 19 R G L 21 20 36 37 38 68 25 26 30 29 10 70 72 73 75 76 27 MCK MDATA MLT ISTAT SQDT LKFS SOS1 SQCK A GND R CH L CH GND B RESET LOCK SMEF WDCH SMON SMSD SL IN SP IN TE IN EF IN VREF SL SL MOTOR ACTUATOR DRIVER 6 ASSP KB9223 NIC 9223 SCW1 SCW4 SIC1 SIC2 SIC3 DIGITAL SIGNAL PROCESSOR 16 9344MHz 66 69 8 EFM TRCNT LB1...

Page 42: ...STANT R P SW A IN B IN A B SELECT S W A IN B IN 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 DI CL CE OSC Vss V DD 2 V DD 1 INH V DD COM 3 COM 2 COM 1 S 52 S 51 S 50 S 49 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 S 17 S 18 S 19 S 20 S 21 S 22 S 23 S 24 S 25 S 26 S 27 S 28 S 29 S 30 S 31 S 32 S 1 1 S 2 2 S 3 3 S 4 4 S 5 5 S 6 6 S 7 7 S 8 8 S 9 9 S 10 10 S 11 11 S 12 12 S 13 13 S 14 14 S 15...

Page 43: ...T 45 30K IN1 NF1 RIPPLB IN2 NF2 GND B S 2 OUT 2 OUT 1 B S 1 CH1 4 1 2 3 5 8 9 10 11 13 22 7 6 21 27 30 7 16 25 19 17 14 15 12 23 28 27 26 AM MIX AM RF V REG ALC AM OSC FM IF FM DET FM LEVEL DET AGC AM IF AM DET IF BURR COMP P D VCO MUTE DECOD ER ST SW F F 38KHz F F 19KHz 90 F F 19KHz 0 LED DRIV TRIG PILOT DET VCC 6dB GND mm18 10 3 23 98 4 17 PM Page 9 4 ...

Page 44: ... 02 P 01 P 00 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 XOUT TEST 1 EO 1 EO 2 Vss FMIN AMIN Vdd SUBPD EO 3 HCTR LCTR SNS HOLD PH 0 ADI 0 PH 1 ADI 1 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 LC72362N QIP80E I 0 I 0 I 0 0 0 0 I I 0 0 0 0 I 0 I 0 I 0 0 I I L N1 L N2 L N3 L N4 R N1 R N2 R N3 R N4 11 12 13 14 10 9 8 7 100K 100K 100K 100K 100K 100K 100K 100K G G 0 30dB 2dB STEP INPUT MULTIPL...

Page 45: ...10 11 12 13 14 15 16 COM1 COM1 1F 1H 1A 2F 2H 2A 3F 3H 3A SLEEP COM2 COM2 1I 1G 1B 2E 2G 2B 3E 3G 3B 1 COM3 COM3 1E 1D 1C 2D 2C 2J 3D 3C REP 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 COM1 4F 4A 5F 5J 5A MONO 6F P 6A 7F INTRO 7A AUTO COM2 4E 4G 4B 5E 5G 5B STEREO 6E 6G 6B 7E 7G 7B kHz COM3 3J 4D 4C 4HJ 5D 5C COL 6D 6C PROGRAM 7D 7C MHz CD SYNC mm18 10 3 23 98 4 17 PM Page 9 6 ...

Page 46: ...22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 GND GND 10K REGULATOR 10K 10K VCC VCC 10K 10K T S D 10K 10K 10K 50K MUTE LEVEL SHIFT LEVEL SHIFT KA9258 NIC9258 9 3 2 CD TR 1 E NOTE KSB564 EBC TYPE C B 2 3 KSR1003 A928 mm18 10 3 23 98 4 17 PM Page 9 7 ...

Page 47: ... ECC 18K SRAM SRAM ADDRESS CENERATOR DIGITAL OUTPUT MODE SELECTOR CPU INTERFACE TRACK COUNTER X TAL TIMING OSCILATOR INTERPOLATOR CLV SERVO FRAME SYNC DETECTOR PROTECTOR INSERTOR EFN1 APDO2 APDO1 SOCK SODT SDAT SBGK SOS1 VCOLO1 CONTVOL DPFIN DPFOUT DPDO SMEF SMON SMDP SMSD LOCX XOUT XIN MDAT MCK MLT DSPEED CNIN ISTAT DSPEED SEL1 SEL2 SEL3 SEL4 TEST C2P0 ADATA2 ADATA1 LRCH1 LRCH2 DATX EFM DEMODULAT...

Page 48: ...CH20 CH21 GC21 GC20 DCC1 RFO PD1 PD2 F E EI PD LD VR ARF IRF ASY EFM RFI DCB Focus Error Amp FE BIAS Adjustment Tracking Error Amp E F Balance Gain Control APC Amp Center Voltage Amp RF Level AGC Equalizer EFM Comparator Defect Dectection Circuit Micom Data Interface Logic MICOM TO SERVO CONTROL AUTO SEQUENCER ADJUSTMENT FREE CONTROL FS1 to FS4 TM to TM6 BAL1 to BAL5 PS1 to PS4 GA1 to GAS Focus Ph...

Page 49: ...TROL CLK VOLUME CONTROL CE SENSE SQDT SQCK F OK MLT MDATA MCK CLOSE OPEN MUTE RESET MOTOR CONTROL FM MODE IF CNT HIGH SPEED MOTOR CTL TAPE PLAY TAPE REC TAPE REC LKFS SOSI CD TEST OSC for SYSTEM CLOCK DOOR CLOSE SENSE PORT LCD CONTROL SIGNAL LCD CONTROL SIGNAL LCD CONTROL SIGNAL DOOR OPEN SENSE PORT VOLUME CONTROL SIGNAL VOLUME CONTROL SIGNAL VOLUME CONTROL SIGNAL SERVO FUNCTION SIGNAL SUBCODE Q C...

Page 50: ...ON INPUT OPTION INPUT OPTION INPUT TUNING IND SD STEREO IND REMOCON S BASS SW MW FM KEY DATA KEY DATA KEY DATA KEY DATA KEY DATA POWER OFF SENSE VOLTAGE SENSE FM AM IF INPUT AM INPUT FM INPUT FM TUNING VOLTAGE FM TUNING VOLTAGE OSC for SYSTEM CLOCK PORT for TUNER FUNCTION MUTE for AUDIO MUTE for TUNER FUNCTION LASER DIODE ON SIGNAL PORT for OPTION DATA PORT for OPTION DATA PORT for OPTION DATA POR...

Page 51: ...hannel2 The output pin for post filter channel1 The input pin for post filter channel1 Amplifier output pin for gain and low pass filtering of DAC output CH1 Amplifier negative input pin for gain and low pass filtering of DAC output CH1 The pin for noise reduction of post filter bias VSS for post filter The input pin for post filter muting control The input pin for current setting of focus search ...

Page 52: ...ut pin Tracking error amplifier output pin The input pin of tracking error low pass filtering signal The power supply pin for logic circuit The capacitor connectiong pin for tracking defect compensation Focus servo input pin Focus error amplifier output pin The capacitor connection pin for focus defect compensation The capacitor connection pin for high frequency tracking gain switch The pin for hi...

Page 53: ...ck output of 48 bit Slot 2 1168MHz 4 2336MHz when ESP ON C2 Pointer for output audio data Input terminal2 of reference voltage L Floating Input terminal2 of reference voltage L GND connection Analog VCC2 Right Channel audio output through D A converter Left Channel audio output through D A converter Analog ground2 Input terminal1 of reference voltage H VDD connection Input terminal2 of reference v...

Page 54: ...dow or unprotected frame sync RA7 Frame sync protection state RA8 Display of either RAM overflow or underflow for 4 frame jitter margin RA9 Only monitoring signal 4 2336MHz RA10 16 9344MHz signal output RA11 Terminal for test Terminal for test Mode Selection1 H 33 8688MHz L 16 9344MHz TEST input terminal GND connection Mode Selection2 H CD ROM L CDP TEST input terminal GND connection TEST input te...

Page 55: ...10 PCB Diagrams 10 1 Main Samsung Electronics 10 1 mm18 5 3 23 98 4 26 PM Page 1 ...

Page 56: ...10 2 SUB Front Power Mic PCB Diagrams 10 2 Samsung Electronics mm18 5 3 23 98 4 26 PM Page 2 ...

Page 57: ...10 3 CD PCB Diagrams Samsung Electronics 10 3 mm18 5 3 23 98 4 26 PM Page 3 ...

Page 58: ...11 Wiring Diagram Samsung Electronics 11 1 mm18 5 3 23 98 4 36 PM Page 1 ...

Page 59: ...901 TO CDP PCB JIC301 KA22291 PRE REC AMP R P HEAD E HEAD MIC MIXING OPTION AIC601 TA8207K POWER AMP WOOFER ASP601 L TERMINAL SPK 1 2 AJ1 AJ2 JACK PHONES AJ1 TERMINAL SPK 1 2 R ASP651 WOOFER PT701 TRANS POWER VDE B S 230V 240V 50Hz AC CORD ZJ1 AUX JACK L R 12 Schematic Diagrams 12 1 Main Samsung Electronics 12 1 mm18 5 3 23 98 4 41 PM Page 1 ...

Page 60: ...ung Electronics Schematic Diagrams 1 2 NCW104 NCW100 G3X8 KB9223 KS9286 SCHEMATIC DIAGRAM NIC1641 SIC2 1 CD SIC1 LB1641 3 CD NIC9223 KB9223 ASSP NIC9286 KS9286 DSP D ACON NIC9258 KA9258 1 2 mm18 5 3 23 98 4 41 PM Page 2 ...

Page 61: ...8V 5V 5V 0V 2 5V 2 5V 2 5V 0V 2 5V 2 5V 2 5V 8V 8V 2 5V 2 5V 2 5V 2 5V 0V 4 5V 4 5V 2 5V 8V 5V 5V 0V 2 5V 4 5V 4 5V 0V 4 5V 4 5V 2 5V 8V 8V 2 5V 2 5V 4 5V 4 5V 0V No IC Name STOP MODE STOP MODE KB9223 PLAY MODE PLAY MODE 41 42 43 44 45 46 47 48 49 50 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 5V 0V 5V 2 5V 5V 0V 5V 0V 3 8V 2 5V 5V 0V KB9223 0V 0V 0V 0...

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Samsung MM-18, Service Manual

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