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Aiwa Z-L900 Service Manual

Compact disc stereo cassette receiver
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SERVICE MANUAL
COMPACT DISC STEREO
CASSETTE RECEIVER
SYSTEM
Z–L900
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
Z-L900 (LH), (S/M Code No. 09-001-424-5T1).
• If requiring information about the CD mechanism, see Service Manual of
6ZG-1 ZRDM, (S/M Code No. 09-001-338-7N2).
Z-L900
BASIC TAPE MECHANISM : 2ZM-3MK2 PR5NM
BASIC CD MECHANISM : 6ZG-1 ZRDM
CD
SPEAKER
CASSEIVER
CX–ZL900
SX–WZL900
S/M Code No. 09-004-424-5R1
LH
REMOTE
CONTROLLER
RC–ZAS12

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Summary of Contents for Aiwa Z-L900

  • Page 1 SX–WZL900 RC–ZAS12 • This Service Manual is the "Revision Publishing" and replaces "Simple Manual" Z-L900 (LH), (S/M Code No. 09-001-424-5T1). • If requiring information about the CD mechanism, see Service Manual of 6ZG-1 ZRDM, (S/M Code No. 09-001-338-7N2). S/M Code No. 09-004-424-5R1...

  • 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 MAIN C.B 8A-MA3-656-010 C-IC,LC876580W-5P55 87-A10-712-080 C-CAP,S 0.22-50 F 87-A21-021-040 C-IC,BU2099FV 87-A10-712-080 C-CAP,S 0.22-50 F 87-A20-783-040 C-IC,BA7762AFS 87-A10-520-000 CAP, E 3300-35 87-A21-398-010 IC,STK490-110 87-A10-520-000 CAP, E 3300-35 87-A21-577-040 C-IC,M61506FP 87-016-300-080...
  • Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C356 87-010-260-080 CAP, ELECT 47-25V C643 87-010-196-080 C-CAP,S 0.1-25 ZF C357 87-010-197-080 CAP, CHIP 0.01-25 KB C644 87-010-401-080 CAP, ELECT 1-50V C358 87-010-183-080 C-CAP,S 2700P-50 B C671 87-010-322-080 C-CAP,S 100P-50 CH C359 87-010-183-080...
  • Page 8 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C991 87-010-312-080 C-CAP,S 15P-50 CH C135 87-018-209-080 CAP, TC U 0.01-50 C992 87-010-312-080 C-CAP,S 15P-50 CH C137 87-010-313-080 CAP, CHIP 18P-50 C993 87-010-178-080 CHIP CAP 1000P-50 C138 87-010-196-080 CHIP CAPACITOR,0.1-25 C995 87-010-178-080...
  • Page 9 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION LED212 87-A40-317-080 LED,SLR-342VCT31 RED R243 87-A00-669-080 RES,M/F 0.22-2W J LED213 87-A40-317-080 LED,SLR-342VCT31 RED R244 87-A00-669-080 RES,M/F 0.22-2W J LED214 87-A40-317-080 LED,SLR-342VCT31 RED TH101 87-A91-042-080 C-THMS,100K 55001 S401 87-A90-095-080 SW,TACT EVQ11G04M TH102 87-A91-042-080...
  • Page 10 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION S842 87-A90-095-080 SW,TACT EVQ11G04M C107 87-A11-148-080 CAP,TC U 0.1-50 Z F S843 87-A90-095-080 SW,TACT EVQ11G04M C108 87-A11-148-080 CAP,TC U 0.1-50 Z F S844 87-A90-095-080 SW,TACT EVQ11G04M C109 87-A11-148-080 CAP,TC U 0.1-50 Z F S845 87-A90-095-080...

  • Page 11: Chip Resistor Part Code

    CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code Value of resistor Chip resistor Dimensions (mm) Wattage Type Tolerance Symbol Resistor Code Form 1/16W 1005 0.35 1/16W 1608 0.45 1/10W 2125 1.25 0.45 1/8W 3216 0.55 TRANSISTOR ILLUSTRATION E C B E C B E C B...
  • Page 12 WIRING – 1 (MAIN / VM) (1/2) J603 (2/2) – 12 –...
  • Page 13 SCHEMATIC DIAGRAM – 1 (MAIN 1 / 3 : AMP SECTION / VM) – 13 –...
  • Page 14 SCHEMATIC DIAGRAM – 2 (MAIN 2 / 3 : DECK SECTION / HEAD – 1 / HEAD – 2) – 14 –...

  • Page 15: Schematic Diagram

    SCHEMATIC DIAGRAM – 3 (MAIN 3 / 3 : TUNER SECTION) – 15 –...
  • Page 16 WIRING – 2 (MICON) – 16 –...
  • Page 17 SCHEMATIC DIAGRAM – 4 (MICON / DECK) – 17 –...
  • Page 18 WIRING – 3 (CNTL) – 18 –...
  • Page 19 WIRING – 4 (MIC / KEY CD / DK1 LED / DK2 LED) – 19 –...
  • Page 20 SCHEMATIC DIAGRAM – 5 (CNTL / MIC / KEY CD / DK1 LED / DK2 LED) – 20 –...
  • Page 21 WIRING – 5 (AMP 1F) – 21 –...
  • Page 22 SCHEMATIC DIAGRAM – 6 (AMP 1F) – 22 –...
  • Page 23 WIRING – 6 (PT) – 23 –...

  • Page 24: Schematic Diagram - 7 (Pt)

    SCHEMATIC DIAGRAM – 7 (PT) – 24 –...
  • Page 25 WIRING – 7 (DECK / HEAD – 1 / HEAD – 2) – 25 –...
  • Page 26 IC DESCRIPTION IC, LC876580W-5P55 Pin No. Pin Name Description M-CLK Common serial clock. M-DATA Common serial data. M-STB Common serial strobe. PLL-CE Tuner PLL IC chip enable. SR-LCK Shift register IC LATCH clock. RYM-CS RHYTHM IC chip select. POWER Audio power ON/OFF. MUTE System MUTE ON/OFF.
  • Page 27 Pin No. Pin Name Description P27/RHYTHM FL segment P27 output / RHYTHM function detection. "H" : ON (Not used) P26/KEYCON FL segment P26 output / KEYCON function detection. "H" : ON (Not used) P25/5MODE FL segment P25 output / GEQ 5MODE select. "H" : 5 MODE (Not used) P24/ECO FL segment P24 output / ECO mode detection.

  • Page 28: Ic Block Diagram

    IC BLOCK DIAGRAM – 28 –...
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  • Page 33 FL (BJ751GNK) GRID ASSIGNMENT & ANODE CONNECTION GRID ASSIGNMENT – 33 –...
  • Page 34 ANODE CONNECTION – 34 –...
  • Page 35 ADJUSTMENT <TUNER / DECK / MICON> MAIN C.B SFR352 L802 L801 SFR351 IC801 TP3 (DC BALANCE) (DC BALANCE) L951 TP2 (CLK) (3/3) (1/3) TP1 (VT) FFE831 TP8 (LCH) TP9 (RCH) MICON C.B FL101 IC101 L101 (O-KSCAN) D-GND DECK–1 P HEAD DECK–2 R/P/E HEAD DECK C.B SFR1...
  • Page 36 < TUNER SECTION > < DECK SECTION > 1. Clock frequency Check 8. Tape Speed Adjustment (DECK 2) Settings : • Test point : TP2 (CLK) Settings : • Test tape : TTA–100 Method : Set to AM 1710kHz and check that the test point is •...

  • Page 37: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1 / 1 – 37 –...

  • Page 38: Mechanical Parts List

    PANEL,CD LED 60 8A-MA2-202-010 HLDR,FAN 21 8A-MA3-037-010 PANEL ASSY,TRAY 3 61 87-A80-148-010 AC CORD ASSY,E BLK 22 87-B00-002-010 BADGE AIWA 30 ABS S1 62 87-085-185-010 BUSHING, AC CORD (E) 23 87-NF4-216-010 HLDR,LOCK 1 63 87-MA3-062-010 FOOT, H17 24 8A-MA3-093-010 KNOB ASSY,RTRY JOG...

  • Page 39: Tape Mechanism Exploded View

    TAPE MECHANISM EXPLODED VIEW 1 / 1 PH(DECK 1) RPH(DECK 2) DECK C.B SOL 2 SOL 1 (DECK 2) (DECK 1) HEAD 1 C.B(DECK 1) HEAD 2 C.B(DECK 2) (DECK 1) (DECK 1) (DECK 2) (DECK 2) – 39 –...

  • Page 40: Tape Mechanism Parts List

    TAPE MECHANISM PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 82-ZM3-301-519 CHAS ASSY,M2 82-ZM1-236-019 CAPSTAN N 2-41.5 82-ZM1-258-110 SPR-T,PINCH L 82-ZM1-239-019 CAPSTAN N 2.2-41.7 82-ZM1-341-110 LVR ASSY,PINCH L2 82-ZM1-322-019 SPR-T,FR60 82-ZM1-333-010 PLATE,LINK 2 82-ZM1-220-219 GEAR,IDLER...
  • Page 41 SPEAKER DISASSEMBLY INSTRUCTIONS Type.1 Type.4 Insert a flat-bladed screwdriver into the position indicated by the TOOLS 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 Type.2...

  • Page 42: Accessories / Package List

    7 8A-MS2-001-010 PANEL,FR 60 8 8A-MS3-002-010 PANEL,TW 9 8A-MS3-003-010 PANEL,BA 10 8A-MS3-004-010 PLATE,NAME 11 8A-MS3-006-010 GRILLE,FRAME ASSY 12 8A-MS4-010-010 BADGE,AIWA ACCESSORIES / PACKAGE LIST REF. NO. PART NO. KANRI DESCRIPTION 1 8A-MA2-902-010 IB,LH (ESP) M 2 8Z-MA1-702-010 RC UNIT,ZAS12 3 87-043-115-010...
  • Page 43 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9420208 9630472 0251431 Printed in Singapore...

This manual is also suitable for:

Cx–zl900Sx–wzl900Rc–zas12

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