Aiwa Z-L620 LH Service Manual
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Aiwa Z-L620 LH Service Manual

Aiwa Z-L620 LH Service Manual

Compact disc stereo system
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SERVICE MANUAL
COMPACT DISC STEREO
SYSTEM
SYSTEM
Z–L620
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
Z-L620 (LH), (S/M Code No. 09-00B-439-4T1).
• If requiring information about the CD mechanism, see Service Manual of
BZG-5, (S/M Code No. 09-00C-353-3N2).
Z-L620
BASIC TAPE MECHANISM : ZZM-3 PR1NM
BASIC CD MECHANISM : BZG-5 ZD3N1M
CD
CASSEIVER
CX–ZL620
S/M Code No. 09-011-439-4R1
SPEAKER
CONTROLLER
SX–WZL620
LH
REMOTE
RC–ZAS02

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Summary of Contents for Aiwa Z-L620 LH

  • Page 1 Z-L620 SERVICE MANUAL COMPACT DISC STEREO BASIC TAPE MECHANISM : ZZM-3 PR1NM SYSTEM BASIC CD MECHANISM : BZG-5 ZD3N1M REMOTE SYSTEM SPEAKER CASSEIVER CONTROLLER Z–L620 CX–ZL620 SX–WZL620 RC–ZAS02 • This Service Manual is the "Revision Publishing" and replaces "Simple Manual" Z-L620 (LH), (S/M Code No.

  • Page 2: Specifications

    SPECIFICATIONS <FM tuner section> <Compact disc player section> Tuning range 87.5 MHz to 108 MHz Laser Semiconductor laser (λ =780 nm) Usable sensitivity (IHF) 13.2 dBf D-A converter 1 bit dual Antenna terminals 75 ohms (unbalanced) Signal-to-noise ratio 85 dB (1 kHz, 0 dB) Harmonic distortion 0.05 % (1 kHz, 0 dB) <AM tuner section>...

  • 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 CAUTION the instructions below when servicing. Use of controls or adjustments or performance of proce- dures other than those specified herin may result in WARNING!! hazardous radiation exposure.

  • Page 4: Note On Before Starting Repair

    NOTE ON BEFORE STARTING REPAIR 1. Forced discharge of electrolytic capacitor of power supply block When repair is going to be attempted in the set that uses relay circuit in the power supply block, electric potential is kept charged across the electrolytic capacitors (C101, 102) even though AC power cord is removed.
  • Page 5 In such a case, check also if the POWER AMPLIFIER circuit or power supply circuit has any abnormalities or not. 2-2. Regarding reset There are cases that the machine does not work correctly because the MICROCOMPUTER is not reset even though the AC power cord is re-inserted, or the software reset (pressing the STOP key + POWER key) is performed.

  • Page 6: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 87-A12-317-080 C-CAP,U 0.1-50 Z F 87-016-520-000 CAP,E 3300-65 M SMG 8B-MA5-651-010 C-IC,LC876572 87-016-520-000 CAP,E 3300-65 M SMG 87-A21-419-040 C-IC,NJM14558MD-TE2 87-A10-520-000 CAP,E 3300-35 M SMG 87-A21-577-040 C-IC,M61506FP 87-A10-520-000...
  • Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C315 87-A12-062-080 CAP,E 100-10 SMG C801 87-A12-089-080 CAP,E 3.3-50 SMG C317 87-A12-085-080 CAP,E 0.33-50 SMG C802 87-010-829-080 CAP, U 0.047-16 C318 87-A12-085-080 CAP,E 0.33-50 SMG C803 87-010-787-080 CAP, U 0.022-25 C326 87-016-118-080 C-CAP,U0.022-25JB...
  • Page 8 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION FFC602 88-906-321-110 FF-CABLE,6P 1.25 320MM C311 87-010-405-040 CAP,E 10-50 J201 87-A61-480-010 JACK,DIA6.3 BLK ST W/SW MSC16A C411 87-012-157-080 C-CAP,S 330P-50 CH J203 87-A60-238-010 TERMINAL,SP 4P (MSC) C412 87-010-405-040 CAP,E 10-50 J602 87-A60-881-010...
  • Page 9 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION S753 87-A90-095-080 SW,TACT EVQ11G04M S754 87-A90-095-080 SW,TACT EVQ11G04M S755 87-A90-095-080 SW,TACT EVQ11G04M FAN C.B C501 87-010-401-080 CAP, ELECT 1-50V C502 87-010-374-080 CAP, ELECT 47-10V C503 87-010-380-080 CAP, ELECT 47-16V CN502 87-A60-688-010 CONN,4P H GRY TUC-P04X-C1...

  • Page 10: Transistor Illustration

    TRANSISTOR ILLUSTRATION E C B E C B B C E G D S 2SA1981Y KTA1266GR FN1016 2SK2937 2SA1979O/Y KTC3198GR FP1016 2SC5343G CSC4115BC CDA1585BC CC5551 S D G E C B B C E 2SJ460 2SB1237(Q) CSB1370EF 2SA1235F DTA114EK 2SK2541 2SC2714O DTA123EKA 2SC3052F...
  • Page 11 WIRING – 1 (MAIN) – 11 –...

  • Page 12: Schematic Diagram - 1 (Main 1 / 2 : Amp Section)

    SCHEMATIC DIAGRAM – 1 (MAIN 1 / 2 : AMP SECTION) – 12 –...

  • Page 13: Schematic Diagram - 2 (Main 2 / 2 : Tuner Section)

    SCHEMATIC DIAGRAM – 2 (MAIN 2 / 2 : TUNER SECTION) – 13 –...
  • Page 14 WIRING – 2 (FRONT) – 14 –...

  • Page 15: Schematic Diagram - 3 (Front / Deck)

    SCHEMATIC DIAGRAM – 3 (FRONT / DECK) – 15 –...
  • Page 16 WIRING – 3 (KEY CD / FAN) – 16 –...
  • Page 17 SCHEMATIC DIAGRAM – 4 (KEY CD / FAN) – 17 –...
  • Page 18 WIRING – 4 (PT) – 18 –...

  • Page 19: Schematic Diagram - 5 (Pt)

    SCHEMATIC DIAGRAM – 5 (PT) – 19 –...

  • Page 20: Wiring - 5 (Deck)

    WIRING – 5 (DECK) TO FRONT C. B CN104 (FFC104) F DECK C . B 11 9 7 5 3 1 10 8 6 4 2 – 20 –...
  • Page 21 IC DESCRIPTION IC, LC876572 Description Pin No. Pin Name M-CLK Common serial clock. M-DATA Common serial data. TU-ON Tuner supply control. H: ON. O-PLL-CE Tuner PLL IC chip enable. CD dish LED5. L: ON. BIAS Recording bias control. L: ON. O-POWER Audio power ON/OFF.
  • Page 22 Description Pin No. Pin Name P24/ECO FL segment P24 output/ECO setting switching input. H: ECO mode off. 60 ~ 63 P23 ~ P20 FL segment P23 ~ P20 output. P19/CST2 FL segment P19 output/Deck 2 cassette detection. L: YES. FL segment P18 output. P17/CAM2 FL segment P17 output/Deck 2 cam SW input.

  • Page 23: Ic Block Diagram

    IC BLOCK DIAGRAM – 23 –...
  • Page 24 FL (BJ823GNK) GRID ASSIGNMENT & PIN CONNECTION & ANODE CONNECTION GRID ASSIGNMENT PIN CONNECTION ANODE CONNECTION – 24 –...
  • Page 25 ADJUSTMENT < TUNER / DECK / FRONT > < TUNER SECTION > 1. Clock Frequency Check Settings : • Test point : TP2 (CLK) 7. DC Balance / Mono Distortion Adjustment Method : Set to AM 1710 kHz and check that the test point is Settings : •...
  • Page 26 < DECK SECTION > 10. Tape Speed Adjustment (DECK 2) 15. REC/PB Sensitivity Check (DECK 2) Settings : • Test tape : TTA–100 Settings : • Test tape : TTA–602 • Test point : TP8(Lch), TP9(Rch) • Test point : TP8(Lch), TP9(Rch) •...

  • Page 27: Cd Test Mode

    CD TEST MODE 1. How to Activate CD Test Mode While pressing and holding the function button, insert the AC plug. When the test mode starts, the message, “TEST” appears on the display. 2. How to Cancel CD Test Mode Press the POWER button or remove the AC plug.

  • Page 28: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1 / 1 – 28 –...

  • Page 29: Mechanical Parts List

    HLDR,TR A3 6 8B-MA5-050-010 WINDOW,DISP A5 36 8A-DB8-209-010 HLDR,PWB PT 7 87-NF4-216-010 HLDR,LOCK 1 37 88-MA1-208-210 JOINT,CABI 8 87-B00-002-010 BADGE,AIWA 30 ABS SIL 38 8B-MA5-011-010 CABI,REAR LH A5 9 87-NF8-220-010 DMPR,150 39 8B-MA3-202-010 HLDR,HT-SINK 10 86-NF9-224-010 SPR-C,LOCK 40 87-A91-736-010 FAN,DSB0812M-S382 -300MM...

  • Page 30: Tape Mechanism Exploded View

    TAPE MECHANISM EXPLODED VIEW 1 / 1 TERMINAL, TERMINAL,LB1 IC, EW732 IC, EW732 – 30 –...

  • Page 31: Tape Mechanism Parts List

    TAPE MECHANISM PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 8Z-ZM3-227-010 BELT,MAIN M3 8Z-ZM3-233-010 SPR-T,BRG M3 8Z-ZM3-235-010 BELT,MAIN L 84-ZM2-227-310 SPR-C,AZIMUTH 8Z-ZM1-235-010 PULLEY,MOT 87-A90-403-110 HEAD,RPH MS15R 87-045-347-010 MOT,SHU2L 70 87-A90-404-010 HEAD,EH LE15B 8Z-ZM1-232-010 GEAR,IDL FF/REW 8Z-ZM3-239-010...

  • Page 32: General Speaker Disassembly Instructions (For Reference)

    GENERAL SPEAKER DISASSEMBLY INSTRUCTIONS (FOR REFERENCE) Type.1 Type.4 TOOLS Insert a flat-bladed screwdriver into the position indicated by the arrows and remove the panel. Remove the screws of each speaker 1 Plastic head hammer unit and then remove the speaker units. 2 (() flat head screwdriver 3 Cut chisel How to Remove the PANEL, FR...

  • Page 33: Accessories / Package List

    SPEAKER PARTS LIST SX-WZL620 (YLSL) REF. NO. PART NO. KANRI DESCRIPTION 1 8B-MS3-015-010 PANEL,FR A 2 8B-MS3-004-010 PANEL,TW A 3 8B-MS3-005-010 PANEL,TW B 4 8B-MS3-006-010 PANEL,DUCT A 5 8B-MS3-007-010 PANEL,DUCT B 6 8B-MS3-008-010 PANEL,DUCT C 7 8B-MS3-009-010 PROTECTOR,SQ 8 88-NS5-610-010 CORD,SPKR 9 88-NSK-610-010 SPKR,CERAMIC ASSY...
  • Page 34 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 2000075 9630472 0251431 Printed in Singapore...

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