Aiwa CSD-A280LH Service Manual

Compact disc stereo cassette recorder

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SERVICE MANUAL
COMPACT DISC
STEREO CASSETTE RECODER
This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
(S/M Code No. 09-002-430-0T1).
CSD-A280
BASIC CD MECHANISM : DA11T3
BASIC TAPE MECHANISM : TN-21ZVC-2000
S/M Code No. 09-002-430-0R1
LH

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Summary of Contents for Aiwa CSD-A280LH

  • Page 1 CSD-A280 SERVICE MANUAL BASIC CD MECHANISM : DA11T3 COMPACT DISC STEREO CASSETTE RECODER BASIC TAPE MECHANISM : TN-21ZVC-2000 This Service Manual is the "Revision Publishing" and replaces "Simple Manual" (S/M Code No. 09-002-430-0T1). S/M Code No. 09-002-430-0R1...
  • Page 2: Specifications

    SPECIFICATIONS • Design and specifications are subject to change without notice ACCESSORIES/PACKAGE LIST REF. NO PART NO. KANRI DESCRIPTION 1 8A-CD9-902-010 IB,LH(ESP)B 2 87-A80-036-010 AC CORD SET ASSY,E W/FLTR VOL 3 8Z-CDK-962-010 RC UNIT,RC-ZAT02(VS) 4 8Z-CD5-634-010 COVER,AC SOCKET 5 87-A90-312-010 PLUG,CONVERSION WTN-1157R1...
  • 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 C811 87-010-178-080 CHIP CAP 1000P C812 87-010-178-080 CHIP CAP 1000P 87-A20-955-010 IC,LA1828 C816 87-010-180-080 C-CER 1500P 87-A21-090-010 IC,LA4600 C817 87-010-180-080 C-CER 1500P 87-A21-520-040 C-IC,M61509FP C821 87-010-401-080 CAP, ELECT 1-50V...
  • Page 5 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C421 87-A11-177-080 C-CAP,S 0.15-16 K B CN403 87-099-201-010 CONN,8P 6216 H C422 87-010-184-080 CHIP CAPACITOR 3300P(K) CN802 8A-CH4-687-010 CONN,4P V 2.5 C423 87-010-992-080 C-CAP,S 0.047-25 B CNA402 8A-CD9-625-010 CONN ASSY,6P CD-ME C424 87-016-460-080...
  • Page 6 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 87-010-154-080 CAP CHIP 10P BATT C.B 87-010-314-080 C-CAP,S 22P-50V 87-010-148-080 C-CAP,S 4P-50 C CH GRM 87-012-141-080 0.01-25 K B C2012 VOLTAGE C.B 87-010-197-080 C-CAP,S0.01-25 K B C 2012 !SW901 87-036-389-010 SW,PUSH 1-1-1 R8120125...
  • Page 7: Ic Block Diagram

    IC BLOCK DIAGRAM IC, LA1828 • 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/CD) (VREF) (RF) (BIAS)
  • Page 9 SCHEMATIC DIAGRAM-1 (MAIN/CD 1/2/H.P./POWER)
  • Page 10 SCHEMATIC DIAGRAM-2 (CD 2/2)
  • Page 11 WIRING-2 (FRONT/MOTOR)
  • Page 12 SCHEMATIC DIAGRAM-3 (FRONT)
  • Page 13 SCHEMATIC DIAGRAM-4 (TUNER)
  • Page 14 WIRING-3 (TUNER) IC DESCRIPTION IC, LC78622ED Pin No. Pin Name Description DEFI Defect detection signal (DEF) input. Test input. A pull-down resistor is built in. Must be connected to 0V. External VCO control phase comparator output. VVSS — Internal VCO ground. Must be connected to 0V. ISET PDO output current adjustment resistor connection.
  • Page 15 Pin No. Pin Name Description LVSS — Left channel one-bit D/A converter ground. Must be connected to 0V. RVSS — Right channel one-bit D/A converter ground. (Must be connected to 0V.) RCHO Right channel onr-bit D/A converter output. RVDD — Right channel one-bit D/A converter power supply.
  • Page 16 IC, LA9241ML Pin No. Pin Name Description For the connection of the pickup photodiode. Addition to the FIN1 pin creates an RF FIN2 signal and subtraction from it create an EF signal. FIN1 For the connection of the pickup photodiode. For the connection of the pickup photodiode.
  • Page 17 Pin No. Pin Name Description 39, 40 CV–, CV+ CLV error signal input from the DSP. RFSM RF output. Sets the RF gain and the EFM signal’s 3T compensation constant together with the RFS– RFSM pin. The SLC (slice level control) signal is output to control the DSP’s data slice level of the RF waveform.
  • Page 18 IC, LC865516A-5L26 Pin No. Pin Name Description SEG E SEG E control. SEG F SEG F control. SEG G SEG G control. — Not connected. I-RES Microprocessor reset input. XT1 (IN) Connected to an external 32.768 kHz crystal oscillator. — Not connected.
  • Page 19 Pin No. Pin Name Description — Not connected. SEG DP SEG DP control. SEG A SEG A control. SEG B SEG B control. SEG C SEG C control. SEG D SEG D control. — Not connected.
  • Page 20: Electrical Adjustment

    ELECTRICAL ADJUSTMENT D TUNER C.B TP6 (RCH) 123456 TP5 (LCH) L009 IC001 L006 L007 L005 L008 PVC001 TC001 TC003 TC004 TC002 L004 L003 < RADIO SECTION > 1. AM Frequency Range Adjustment 5. FM Tracking Adjustment Settings: • Test Point: TP5 (LCH), TP6 (RCH) Settings: •...
  • Page 21: Tape Recorder Section

    B CD C.B IC404 IC401 SFR430 A MAIN C.B L801 < CD SECTION > 1. Focus Bias Adjustment Make the focus bias adjustment when replacing and repairing the optical block. Oscilloscope (DC range) EYE PATTERN must be CLEAR and MAX VOLT / DIV: 200mV TIME / DIV: 0.5 s TP3 (RF)
  • Page 22: Mechanical Parts List

    MECHANICAL PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 87-B00-010-010 BADGE,AIWA 30.5-5.2 S 2.5L 41 8Z-CD5-634-010 COVER,AC SOCKET 2 8A-CD9-009-010 WINDOW,CASS 42 87-A60-178-010 JACK,AC E W/SW 3 8A-CD9-232-010 SPR-T,CASS 43 8A-CD9-012-010 HANDL,GRIP...
  • Page 23: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1/1 P.C.B P.C.B P.C.B DA11T3C P.C.B P.C.B CHAS,TU P.C.B P.C.B GRILLE, FRONT L P.C.B TN-21ZVC-2000 GRILLE, FRONT R...
  • Page 24: Tape Mechanism Exploded View

    TAPE MECHANISM EXPLODED VIEW 1/1 TAPE MECHANISM PARTS LIST 1/1 LUG PLATE REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 S1-921-030-4A0 HEAD BASE 36 S1-921-140-030 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...
  • Page 25: Cd Mechanism Exploded View

    CD MECHANISM EXPLODED VIEW 1/1 SHAFT,SLIDE SF-P101NR CHASSIS SPINDLE MOTOR C,B MOTOR(M1) 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 26 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 920074 Printed in Singapore...

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