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Aiwa Z-A85 Service Manual

Compact disc stereo system
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SERVICE MANUAL
COMPACT DISC STEREO SYSTEM
SYSTEM
Z-A85
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual",
Z-A85 <LH(S)>, S/M Code No. 09-021-455-3T1.
• If requiring information about the CD mechanism, see Service Manual of 6ZG-1,
(S/M Code No.
BASIC TAPE MECHANISM : ZZM-3 YPR1NC
BASIC CD MECHANISM
CD
CASSEIVER
CX-ZA85
09-001-338-7N8)
S/M Code No. 09-024-455-3R1
Z-A85
SPEAKAER
SX-WZA85
LH(S)
: 6ZG-1 YZZRN1M
REMOTE
CONTROLLER
RC-ZAS02

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Summary of Contents for Aiwa Z-A85

  • Page 1 CX-ZA85 SX-WZA85 RC-ZAS02 • This Service Manual is the “Revision Publishing” and replaces “Simple Manual”, Z-A85 <LH(S)>, S/M Code No. 09-021-455-3T1. • If requiring information about the CD mechanism, see Service Manual of 6ZG-1, (S/M Code No. 09-001-338-7N8) S/M Code No. 09-024-455-3R1...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ................................3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ..............4 NOTE ON BEFORE STARTING REPAIR ........................5 ~ 6 ELECTRICAL PARTS LIST (CX – ZA85) .........................7 ~ 22 ELECTRICAL PARTS LIST (ZZM – 3 YPR1NC) ......................23 CHIP RESISTOR PART CODE ............................

  • Page 3: Specifications

    SPECIFICATIONS <FM tuner section> <Compact disc player section> Tuning range 87.5 MHz to 108 MHz Laser Semiconductor laser (l = 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 4: 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 5: 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 6 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 7: Electrical Parts List (Cx - Za85)

    ELECTRICAL PARTS LIST (CX – ZA85) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 8 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 9 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 10 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 11 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 12 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 13 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 14 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 15 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 17 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 18 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 19 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 20 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 21 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.
  • Page 22 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.

  • Page 23: Electrical Parts List (Zzm - 3 Ypr1Nc)

    ELECTRICAL PARTS LIST (ZZM – 3 YPR1NC) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.

  • Page 24: Chip Resistor Part Code

    CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code Value of resistor Chip resistor Dimensions (mm) Symbol Wattage Type Tolerance 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 B C E...

  • Page 25: Wiring - 1 (Main)

    WIRING – 1 (MAIN) – 25 –...

  • Page 26: Schematic Diagram - 1 (Main 1 / 2 : Amp Section)

    SCHEMATIC DIAGRAM – 1 (MAIN 1 / 2 : AMP SECTION) – 26 –...

  • Page 27: Schematic Diagram - 2 (Main 2 / 2 : Tuner Section)

    SCHEMATIC DIAGRAM – 2 (MAIN 2 / 2 : TUNER SECTION) – 27 –...

  • Page 28: Wiring - 2 (Front)

    WIRING – 2 (FRONT) – 28 –...

  • Page 29: Schematic Diagram - 3 (Front / Deck)

    SCHEMATIC DIAGRAM – 3 (FRONT / DECK) – 29 –...

  • Page 30: Wiring - 3 (Key-Cd / Mic / Fan)

    WIRING – 3 (KEY–CD / MIC / FAN) – 30 –...

  • Page 31: Schematic Diagram - 4 (Key-Cd / Mic / Fan)

    SCHEMATIC DIAGRAM – 4 (KEY CD / MIC / FAN) – 31 –...

  • Page 32: Wiring - 4 (Pt)

    WIRING – 4 (PT) – 32 –...

  • Page 33: Schematic Diagram - 5 (Pt)

    SCHEMATIC DIAGRAM – 5 (PT) – 33 –...

  • Page 34: Wiring - 5 (Deck)

    WIRING – 5 (DECK) FROM FRONT C. B CN104 DECK C . B FFC104 CRD1 – 34 –...

  • Page 35: Ic Block Diagram

    IC BLOCK DIAGRAM – 35 –...

  • Page 36: Fl (Bj824Gnk) Grid Assignment / Anode Connection / Pin Connection

    FL (BJ824GNK) GRID ASSIGNMENT / ANODE CONNECTION / PIN CONNECTION GRID ASSIGNMENT ANODE CONNECTION PIN CONNECTION – 36 –...

  • Page 37: Ic Description

    IC DESCRIPTION IC, LC876572V-5T97 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 38 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 39: Adjustment (Tuner / Deck / Front)

    ADJUSTMENT (TUNER / DECK / FRONT) MAIN C.B PARTS SIDE L802 L951 SFR452SFR451 L906 L903 J201 MAIN C.B PATTERN SIDE IC801 (CLK) R962 (GND) (VT) RPH / PH DECK C.B PATTERN SIDE SFR1 – 39 –...
  • Page 40 <TUNER Adjustment> 1. VT Check (AM) Requirements • Measuring instrument: Digital multimeter Test points: VT, GND 1) Connect the digital multimeter between VT and GND. 2) Set the function to AM, and tune the receiving frequency of the unit at 1710kHz. 3) Check that the digital multimeter ranges under 8.5V.
  • Page 41 <AM Adjustment> Make the following preparations for AM adjustment. Preparations • Standard Signal Generator (S.S.G.) / Loop antenna / Oscilloscope / Millivoltmeter / Dummy resistance (6W) 1) Connect the unit and measuring instruments as shown in the diagram below. 2) Position the loop antenna connected to S.S.G. and the one connected to the unit 60cm apart. 4.
  • Page 42 <FM Adjustment> Make the following preparations for FM adjustment. Preparations • Standard Signal Generator (S.S.G.) / Loop antenna / Oscilloscope / Millivoltmeter / Dummy resistance (6W) 1) Connect the unit and measuring instruments as shown in the diagram below. 2) Connect the output of S.S.G. to the antenna input of the unit. AC MILLIVOLTMETER OSCILLOSCOPE OUTPUT...
  • Page 43 <DECK Section> 10. Tape Speed Adjustment (DECK2) Requirements • Measuring instrument: Wow and flutter meter (frequency counter) Test tape: TTA-100(3kHz) Test point: HP OUT Adjustment point: SFR1 1) Connect the wow and flutter meter to HP OUT of the unit. 2) Insert the test tape (TTA-100) to DECK 2.
  • Page 44 1) Connect CH1 of the millivoltmeter to TP8 (Lch) and CH2 to TP9 (Rch). 2) Insert the test tape (TTA-200) to DECK1 and play back. 3) Check that the output level is ranged within 140mV±3dB. 4) Apply the above steps, 2) and 3) to DECK2. 16.
  • Page 45 <FRONT Section> FRONT C.B PATTERN SIDE TP10 (KEYSCAN) TP11 (DGND) FRONT C.B PARTS SIDE L101 <Clock Adjustment> 1. Clock Adjustment Requirements • Measuring instrument: Frequency counter Test tape: KEYSCAN, DGND Adjustment point: L101 1) Connect the frequency counter between KEYSCAN and DGND. 2) While pressing the “POWER”...

  • Page 46: Cd Test Mode

    CD TEST MODE CD TEST MODE Ver. 3.0 1. Starting CD Test Mode While pressing and holding down the CD FUNCTION button, insert the AC plug to outlet. When test mode starts, the message, “TEST” appears on the display. 2. Exiting CD Test Mode Press the other function key, POWER button or remove the AC plug from outlet.

  • Page 47: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 32 33 – 47 –...

  • Page 48: Mechanical Parts List

    8C-MA3-026-010 KNOB,RTRY VOL O MC1005 8B-MA3-086-010 RING,VOL O MC1006 8C-MA3-034-010 WINDOW,DISP A3 O MC1007 87-NF4-216-010 HLDR,LOCK 1 O MC1008 87-B00-002-010 BADGE,AIWA 30 ABS SIL O MC1009 87-NF8-220-010 DMPR,150 O MC1010 86-NF9-224-010 SPR-C,LOCK O MC1011 82-NF5-229-010 PLATE,LOCK(*) O MC1012 8A-MA5-207-010 SPR-T,EJECT 1...
  • Page 49 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.

  • Page 50: Color Name Table

    COLOR NAME TABLE Basic color symbol Color Basic color symbol Color Basic color symbol Color Black Cream Orange Green Gray Blue Transparent Blue Gold Pink Silver Titan Silver Brown Violet White Transparent White Yellow Transparent Yellow Metallic Blue Light Blue Transparent Green Dark Blue Transparent Orange...

  • Page 51: Tape Mechanism Exploded View

    TAPE MECHANISM EXPLODED VIEW IC, EW732 IC, EW732 – 51 –...

  • Page 52: Tape Mechanism Parts List

    TAPE MECHANISM PARTS LIST = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 53 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.

  • Page 54: 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 55: Speaker Parts List (Sx - Wza85)

    SPEAKER PARTS LIST (SX – WZA85) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.

  • Page 56: Accessories Parts List

    ACCESSORIES PARTS LIST = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.

  • Page 57: Others Parts List (Cx - Za85)

    OTHER PARTS LIST (CX – ZA85) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.

  • Page 58: Others Parts List (Zzm - 3 Ypr1Nc)

    OTHER PARTS LIST (ZZM – 3 YPR1NC) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 59 2-11, IKENOHATA 1-CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 2000068 921338...

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