Aiwa LCX-157 Service Manual
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Aiwa LCX-157 Service Manual

Aiwa LCX-157 Service Manual

Compact disc stereo system
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LCX-157
HS(S)
SERVICE MANUAL
COMPACT DISC STEREO
BASIC TAPE MECHANISM : TN-21ZSC-2003
SYSTEM
BASIC CD MECHANISM : DA11T3C
MODEL CODE : 86HR8-0117(B)
S/M Code No. 09-003-340-1N1

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Summary of Contents for Aiwa LCX-157

  • Page 1 LCX-157 HS(S) SERVICE MANUAL COMPACT DISC STEREO BASIC TAPE MECHANISM : TN-21ZSC-2003 SYSTEM BASIC CD MECHANISM : DA11T3C MODEL CODE : 86HR8-0117(B) S/M Code No. 09-003-340-1N1...

  • Page 2: Specifications

    SPECIFICATIONS • Design and specifications are subject to change without notice.

  • Page 3: Protection Of Eyes From Laser Beam During Servicing

    PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs laser. Therefore, be sure to follow carefully the CAUTION instructions below when servicing. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous WARNING! radiation exposure.

  • Page 4: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C112 87-012-140-080 CAP 470P C113 87-010-190-080 S CHIP F 0.01 87-A20-734-010 IC,TDA2007A C114 87-010-190-080 S CHIP F 0.01 87-A21-443-040 C-IC,M62495AFP C115 87-010-112-080 CAP, ELECT 100-16V 8A-CLB-602-010 IC,LC867240A-5P15 C116...
  • Page 5 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C703 87-012-286-080 CAP, U 0.01-25 C828 87-010-196-080 CHIP CAPACITOR,0.1-25 C704 87-012-286-080 CAP, U 0.01-25 C828 87-010-196-080 CHIP CAPACITOR,0.1-25 C709 87-012-195-080 C-CAP,U 100P-50CH C829 87-010-196-080 CHIP CAPACITOR,0.1-25 C711 87-010-263-080 CAP, ELECT 100-10V C859 87-012-286-080...
  • Page 6 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C217 87-010-196-080 CHIP CAPACITOR,0.1-25 C566 87-010-196-080 CHIP CAPACITOR,0.1-25 CN201 87-099-720-010 CONN,30P TYK-B(P) C568 87-010-197-080 CAP, CHIP 0.01 DM CN202 87-A60-404-010 CONN,3P TKX-P03P-F1 C571 87-010-248-080 CAP, ELECT 220-10V L206 87-003-098-080 COIL,2.2UH C572...

  • Page 7: Transistor Illustration

    FL (13-ST-36GNAK) GRID ASSIGNMENT/ANODE CONNECTION GRID ASSIGNMENT • Regarding connectors, they are not stocked as they are not the initial order items. The connectors are available after they are supplied from connector manufacturers upon the order is received. CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code...
  • Page 8 WIRING-1 (MAIN)

  • Page 9: Ic Block Diagram

    IC BLOCK DIAGRAM IC, M62495AFP IC, LA6541D IC, LC72131D IC, LA1837NL IC, BU1920FS...
  • Page 10 SCHEMATIC DIAGRAM-1 (MAIN 1/2) MAIN C.B TO MAIN C.B 2/2 (1/2) J101 JACK. PIN 3P MSP J105 C121 137 MODEL:330/25V 157 MODEL:470/35V INV. SPEAKERS IC102 FUNCTION SWITCH HOLD DET HOLD DET POWER AMP 1.8k J101 JACK. 3.5 ST PHONES IC301 CASSETTE 1.8k F101...
  • Page 11 SCHEMATIC DIAGRAM-2 (MAIN 2/2) MAIN C.B (2/2) DC BALANCE 2.2µH AM IF ADJ BAND TUNER ON//OFF SWITCH FM IF J801 ANTENNA FM 75Ω MW/LW LOOP BEAT AM RF AMP MW/LW SW IC771 FM/AM IF/STEREO L773 TUNER SYSTEM D944 D942 ROCL RODA LW OSC SW LW ANT SW...
  • Page 12 WIRING-2 (CD/FRONT: INSERTED PARTS)
  • Page 13 WIRING-3 (CD/FRONT: CHIP PARTS)
  • Page 14 SCHEMATIC DIAGRAM-3 (FRONT)
  • Page 15 SCHEMATIC DIAGRAM-4 (CD)

  • Page 16: Voltage Chart

    VOLTAGE CHART...

  • Page 18: Electrical Adjustment

    ELECTRICAL ADJUSTMENT...
  • Page 19 IC DESCRIPTION IC, LC867240A-5P15 Pin No. Pin Name Description O-SCONTM M62439SP control. open drain output. O-SCONTL O-DATA Tuner control. CMOS output. ___________ I-TUNE/IFC Tuner control. O-TUCL Tuner control. CMOS output. O-COIN CD control. open drain output. I-SQOUT CD control. ___________ O-CQCK CD control.
  • Page 20 Pin No. Pin Name Description __________ I-STOP Tape stop input. 83-86 COM0-COM3 LCD common output. I-INIT Initial setting input. ______ I-AC/DC Beat selector output. “H” during selection. CMOS output . VSS3 — GND. VDD3 — O-NC Not used. O-TUCE Tuner chip enable output. CMOS output . O-CD-ON “H”...
  • Page 21 IC, LA9241ML Pin No. Pin Name Description Pin to which external pickup photo diode is connected. RF signal is created by adding FIN2 with the FIN1 pin signal. FE signal is created by subtracting from the FIN1 pin signal. FIN1 Pin to which external pickup photo diode is connected.
  • Page 22 Pin No. Pin Name Description Pin from which TES signal is output to DSP. “High Frequency Level” is used to judge whether the main beam position is on top of bit or on top of mirror. SLOF Sled servo off control input pin. 39, 40 CV–, CV+ CLV error signal input pin from DSP.
  • Page 23 IC, LC78622ED Pin No. Pin Name Description Pin No. Pin Name Description DEFI Defect sense signal (DEF) input pin. (Connect to 0V when not used). XVDD — Crystal oscillator power supply pin. Test signal input pin with built-in pull-down resistor. Be sure to connect to 0V. XOUT Pin to which external 16.9344 MHz crystal oscillator is connected.

  • Page 24: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1/1 P.C.B HT-SINK P.C.B TN-21ZSC CHAS, MAIN P.C.B...

  • Page 25: Mechanical Parts List

    AC CORD ASSY HS 4 8Z-CL8-209-010 SPR-T,CASS 29 8A-CLA-626-010 PT,EZ ACL-A 5 8A-CLB-004-010 WINDOW,DISP 30 8Z-CDB-169-010 PANEL,CD SANYO 6 87-B00-002-010 BADGE,AIWA 30 ABS SIL 31 8Z-CL8-206-010 SPR-P,REC 7 8Z-CL8-204-010 CUSH,FOOT 32 8Z-CL8-214-010 DMPR,HLDR BE 8 8A-CLB-001-010 CABI,FR 33 84-CD5-215-010 GEAR...

  • Page 26: Tape Mechanism Exploded View

    TAPE MECHANISM EXPLODED VIEW 1/1 LUG PLATE...

  • Page 27: Tape Mechanism Parts List

    TAPE MECHANISM PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 S1-921-030-4A0 HEAD BASE 36 S1-921-140-220 REC BUTTON LEVER 2 S1-821-030-070 AZIMUTH SPRING 37 S1-921-140-170 P.S.LEVER SPRING 3 S1-921-030-090 PANEL P SPRING 38 S1-921-073-040 RF CLUTCH ASSY 4 S1-921-260-050 GEAR PLATE SPRING...

  • Page 28: Cd Mechanism Exploded View

    CD MECHANISM EXPLODED VIEW 1/1 SHAFT,SLIDE SF-P101NR CHASSIS SPINDLE MOTOR C,B MOTOR(M3) CD MECHANISM PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION 1 S2-121-A28-400 COVER GEAR 2 S2-511-A21-000 GEAR MIDDLE 3 S2-511-A21-100 GEAR,DRIVE A S1-PN2-03R-OSE SCR PAN PCS 2-3 B 87-261-073-410 SCR S-TPG FLT 2.6-6 ALL M8-ZZK-E90-070...

  • Page 29: Speaker Parts List

    KANRI DESCRIPTION 1 8A-CLA-602-010 SPKR, 40HM 8W ACL-A 2 8A-CLB-014-010 CABI,FR SPKR 3 8A-CLB-016-010 FRAME,SPKR 4 86-CL9-214-010 HLDR,CORD(SPKR) 5 8Z-CL7-107-010 BADGE,AIWA SILVER 6 8Z-CL8-694-110 CORD,SPKR GRY ACCESSORIES/PACKAGE LIST REF. NO PART NO. KANRI DESCRIPTION 1 8A-CLB-961-010 RC UNIT,RC-AAT11 2 87-A90-030-010...
  • Page 30 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 737004 Printed in Singapore...

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