Aiwa HS-RX837 Service Manual
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Aiwa HS-RX837 Service Manual

Aiwa HS-RX837 Service Manual

Stereo radio cassette player
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SERVICE MANUAL
STEREO RADIO CASSETTE PLAYER
HS-RX837
SPECIFICATIONS
•
Design and specifications are subject to change without
notice.
•
Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol
of Dolby Laboratories Licensing Corporation.
S/M Code No. 09-986-269-8O2
BASIC TAPE MECHANISM : 6ZM-2P6
are trademarks
DAH1

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Summary of Contents for Aiwa HS-RX837

  • Page 1 HS-RX837 DAH1 SERVICE MANUAL STEREO RADIO CASSETTE PLAYER BASIC TAPE MECHANISM : 6ZM-2P6 SPECIFICATIONS • Design and specifications are subject to change without notice. • Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.

  • Page 2: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. “REAR, CABINET” Removal 1) Remove the battery lid. (1) 2) Remove the four screws. 3) Insert tweezers or like into the gap of the battery insertion slot as shown, and remove the hook. 4) Remove the cabinet assembly in the direction of the arrow (2).

  • Page 3: Caution When Servicing

    CAUTION WHEN SERVICING The motor terminals are directly soldered to C.B. (Printed Circuit Board) so that the unit cannot be checked of its operations when the MAIN C.B. is opened during repair. In order to check operations of the unit with the MAIN C.B. opened, use the jig (for 6ZM-2). Part name: JIG KIT 6ZM-2 Part No.: SV-J00-016-010 1) How to assemble the jig...

  • Page 4: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C127 87-A10-353-080 C-CAP,U0.22-10KB C302 87-010-505-080 CA, CHIP TANTALUM 1-16 PS171 87-A90-440-010 SNSR,PHOTO GP2S24N2- C128 87-010-424-080 CAPACTOR,TANTAL 4.7-4...

  • Page 5: Transistor Illustration

    IC BLOCK DIAGRAM IC, BA3632K IC, TA2022FN 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...

  • Page 6: Schematic Diagram

    SCHEMATIC DIAGRAM SIGNAL VOLTAGE : FM NO MARK : AM/PB : AM/PB ) : FM...
  • Page 7 WIRING-1 MICON VDD SCLK(REM) SDATA(REM) EL GND COM W (TAPE MOTOR) REMOTE S609 (C-SW) S610 (TIMING SW)

  • Page 8: Electrical Adjustment

    ELECTRICAL ADJUSTMENT PRACTICAL SERVICE FIGURE 1. Tape Speed Adjustment <AM SECTION> Settings: Tape selector: Normal Sensitivity: Less than 59dB (630kHz) REVERSE MODE: ƒ (S/N 10dB) Less than 58dB (999/1404kHz) VOLUME POSITION: MAX S/N ratio: More than 26dB (630kHz) HEADPHONE LOAD: 32 (Input 74dB) More than 27dB (999kHz) DSL:...
  • Page 9 WIRING-2...
  • Page 10 IC DESCRIPTION IC, TC9327F-017 Pin No. Pin Name Description Pin No. Pin Name Description COM1-COM4 LCD driver, common. SDATA EEPROM EEPROM data input/output terminal. 5-20 S1-S16 LCD driver, output. BIAS MUTE H: Record mute ON. L: OFF. A-SET1 J area H area MUTE H: Mute ON.
  • Page 11 WIRING-3...

  • Page 12: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1/1 J101 SPACER,PCB SPACER,BAT 6ZM-2 P6 BAR-ANT,MW LCD,AIW4137 P.C.B...

  • Page 13: Mechanical Parts List

    LID ASSY,CASS SIL D 26 88-HR5-008-010 KEY,PLAY-STOP 2 88-HK5-202-010 HLDR ASSY,CASS L 27 88-HR5-009-010 KEY,FF 3 88-HK5-005-010 WINDOW,CASS 28 87-054-085-010 BADGE,AIWA 22.5 MLD 4 88-HK5-207-010 HLDR,CASS R 29 88-HR5-017-010 KNOB,SL TUN SIL 5 88-HR5-022-010 FRAME,CENTER SIL 30 85-HR2-230-010 SPR-T,TUN N 6 88-HR3-201-010...

  • Page 14: Tape Mechanism Exploded View

    TAPE MECHANISM EXPLODED VIEW 1/1 HEAD FLEX C.B PLATE,THRUST SHAFT CAPSTAN SHAFT CAPSTAN...

  • Page 15: Tape Mechanism Parts List

    TAPE MECHANISM PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 86-ZM2-255-010 SPR-T,PIN BACK L 37 86-ZM2-218-010 LEVER,HEAD UP 2 86-ZM2-252-010 GUIDE,TAPE 38 86-ZM2-205-010 FLY-WHL,L 3 86-ZM2-220-010 SPR-T,HEAD 39 86-ZM2-204-010 FLY-WHL,R 4 86-ZM2-219-010 LEVER,HEAD 40 86-ZM2-282-010 SH,AUTO 2...

  • Page 16: Spring Application Position

    SPRING APPLICATION POSITION 86-ZM2-243-110 86-ZM2-243-010 SPR-C,BT SPR-C,BT L 86-ZM2-241-110 86-ZM2-245-210 86-ZM2-213-010 SPR-C,SLIP R SPR-C,SLIP L SPR-C,FR 86-ZM2-213-210 SPR-C,FR C0.3 86-ZM2-220-010 86-ZM2-217-010 86-ZM2-215-010 SPR-T,HEAD SPR-E,CAM L SPR-E,CAM R 86-ZM2-230-010 86-ZM2-229-010 82-ZM2-255-010 SPR-T,PINCH L 86-ZM2-254-010 SPR-T,PINCH R SPR-T,PIN BACK L SPR-T,PIN BACK...

  • Page 17: Accessories/Package List

    ACCESSORIES/PACKAGE LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 88-HR3-901-010 IB,EC 2 87-B30-038-010 BAT,NB-5G 3 88-HK5-952-010 BOX,BAT ASSY SIL 4 82-HK3-951-010 CARRYING,CASE 5 87-B30-137-110 CHARGER,RB-107 H 6 87-B30-122-010 HEADPHONE,HP-M023 7 88-HR3-951-010 RC UNIT,RC838...
  • Page 18 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 Printed in Singapore 727105...

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