Aiwa NSX-T77 Service Manual
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Aiwa NSX-T77 Service Manual

Aiwa NSX-T77 Service Manual

Compact disc stereo cassette receiver
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SERVICE MANUAL
COMPACT DISC STEREO
CASSETTE RECEIVER
SYSTEM
CD–CASSEIVER
NSX–T77<HR>
NSX-T77<K>
• This Service Manual is the "Revision Publishing" and replaces
"Simple Manual" NSX-T77<HR,K> (S/M Code No. 09-005-425-2T5).
• If requiring information about the CD mechanisim, see Service Manual
of 6ZG-1 (S/M Code No. 09-001-338-7N2).
NSX-T77
BASIC TAPE MECHANISM: 2ZM-3MK2 PR4NM
BASIC CD MECHANISM: 6ZG-1 ZRNDM
SPEAKER
CX–NT77
SX–WNT99
CX-NT77
SX-WNT77
S/M Code No. 09-007-425-2R3
HR,K
REMOTE CONTROLLER
RC–ZAS04

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Summary of Contents for Aiwa NSX-T77

  • Page 1 CX-NT77 SX-WNT77 • This Service Manual is the “Revision Publishing” and replaces “Simple Manual” NSX-T77<HR,K> (S/M Code No. 09-005-425-2T5). • If requiring information about the CD mechanisim, see Service Manual of 6ZG-1 (S/M Code No. 09-001-338-7N2). S/M Code No. 09-007-425-2R3...

  • Page 2: Specifications

    All manuals and user guides at all-guides.com 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 83 dB (1 kHz, 0 dB) Harmonic distortion...

  • Page 3: Protection Of Eyes From Laser Beam During Servicing

    All manuals and user guides at all-guides.com 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

    All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com ELETRICAL MAIN PARTS LIST REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 87-A40-488-080 DIODE,1SS244 87-A40-747-080 ZENER,UZ5.1BSB 8A-NF3-635-010 C-IC,LC876596W-5P49 87-A40-751-080 ZENER,UZ6.2BSB 87-A21-482-010 IC,RPM6938-H4 87-A40-646-010 DIODE,FMB-G16L 87-A20-869-040 C-IC,M62449FP 87-A40-438-080 ZENER,MTZJ4.7A 87-A21-397-010 IC,STK490-070<K>...
  • Page 7 All manuals and user guides at all-guides.com REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C324 87-010-260-080 CAP, ELECT 47-25V C618 87-010-401-080 CAP, ELECT 1-50V C325 87-010-370-080 CAP,E 330-6.3 SME C619 87-010-263-080 CAP, ELECT 100-10V C327 87-010-404-080 CAP, ELECT 4.7-50V C620...
  • Page 8 All manuals and user guides at all-guides.com REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C820 87-010-179-080 CAP,CHIP S B1200P 87-A60-996-010 CONN,13P V BLK TAC-L13X-A3 C821 87-010-405-080 CAP, ELECT 10-50V CN91 87-A60-619-010 CONN,2P V 2MM JMT C823 87-012-349-080 C-CAP,S 1000P-50 CH<K>...
  • Page 9 All manuals and user guides at all-guides.com REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 87-A90-510-010 HLDR,WIRE 2.5-9P CN101 87-099-720-010 CONN,30P TYK-B(P) X861 87-A70-091-010 VIB,XTAL 4.332MHZ CSA-309<K> CN102 87-A60-054-010 CONN,14P V 9604S-14C X991 87-A70-061-010 VIB,XTAL 4.500MHZ CSA-309 CN103 87-099-750-010 CONN,15P V 9604SC...
  • Page 10 All manuals and user guides at all-guides.com REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION S216 87-A90-095-080 SW,TACT EVQ11G04M C255 87-010-190-080 S CHIP F 0.01 S217 87-A90-095-080 SW,TACT EVQ11G04M C256 87-010-190-080 S CHIP F 0.01 S221 87-A90-095-080 SW,TACT EVQ11G04M C300...
  • Page 11 All manuals and user guides at all-guides.com REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 87-A90-976-010 RELAY,AC12V SDT-S-112LMR<K> JW316 87-A90-896-080 F-BEAD, 035600STY7 87-A91-300-010 RELAY,AC 12V-ALA2PF12<HR> L101 87-A50-333-010 COIL,OSC 9.43MHZ 87-A90-165-010 SW,SL 1-2-3 SWS2301<HR> LED311 87-A40-380-180 LED,SEL6510C-TP5 GRN 87-A60-317-010 TERMINAL, 1P MSC LED312...

  • Page 12: Chip Resistor Part Code

    All manuals and user guides at all-guides.com 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...
  • Page 13 All manuals and user guides at all-guides.com WIRING - 1 (MAIN / GEQ / VM)<HR> - 13 -...
  • Page 14 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 1 (MAIN 1 / 3 / VM)<HR> - 14 -...
  • Page 15 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 2 (MAIN 2 / 3: DECK / HEAD-1 / HEAD-2)<HR> - 15 -...
  • Page 16 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 3 (MAIN 3 / 3: TUNER)<HR> - 16 -...
  • Page 17 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 4 (GEQ)<HR> - 17 -...
  • Page 18 All manuals and user guides at all-guides.com WIRING - 2 (MAIN / GEQ / VM)<K> - 18 -...
  • Page 19 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 5 (MAIN 1 / 3 / VM)<K> - 19 -...
  • Page 20 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 6 (MAIN 2 / 3: DECK / HEAD-1 /HEAD-2)<K> - 20 -...
  • Page 21 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 7 (MAIN 3 / 3: TUNER)<K> - 21 -...
  • Page 22 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 8 (GEQ)<K> - 22 -...
  • Page 23 All manuals and user guides at all-guides.com WIRING - 3 (DISPLAY / CD KEY) - 23 -...
  • Page 24 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 9 (DISPLAY/ CD KEY/ DECK) - 24 -...
  • Page 25 All manuals and user guides at all-guides.com WIRING - 4 (CONTROL / VOLUME / MIC) - 25 -...
  • Page 26 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 10 (CONTROL / VOLUME / MIC) - 26 -...
  • Page 27 All manuals and user guides at all-guides.com WIRING - 5 (AMP) - 27 -...
  • Page 28 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 11 (AMP) - 28 -...
  • Page 29 All manuals and user guides at all-guides.com WIRING - 6 (PT)<HR> - 29 -...
  • Page 30 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 12 (PT)<HR> - 30 -...
  • Page 31 All manuals and user guides at all-guides.com WIRING - 7 (PT)<K> - 31 -...
  • Page 32 All manuals and user guides at all-guides.com SCHEMATIC DIAGRAM - 13 (PT)<K> - 32 -...
  • Page 33 All manuals and user guides at all-guides.com WIRING - 8 (DECK) - 33 -...

  • Page 34: Ic Block Diagram

    All manuals and user guides at all-guides.com IC BLOCK DIAGRAM - 34 -...
  • Page 35 All manuals and user guides at all-guides.com - 35 -...
  • Page 36 All manuals and user guides at all-guides.com - 36 -...
  • Page 37 All manuals and user guides at all-guides.com FL (BJ752GK-ANF3) GRID ASSIGNMENT AND ANODE CONNECTION GRID ASSIGNMENT - 37 -...
  • Page 38 All manuals and user guides at all-guides.com ANODE CONNECTION - 38 -...
  • Page 39 All manuals and user guides at all-guides.com IC DESCRIPTION IC, LC876596W-5P49 Description Pin No. Pin Name Common serial CLOCK output. DATA Common Serial DATA output. Common serial STROBE output. CS-RHYTHM Rhythm IC chip select output. GEQ-CE GEQ IC chip enable output. HP-MUTE Headphone plug-in detect input.
  • Page 40 All manuals and user guides at all-guides.com Pin No. Pin Name Description P19/K-CON FL segement P19 output / K-CON select diode input (not used). P18/RDS FL segement P18 output / RDS select diode input (K only). P17/FM1 FL segment P17 output / FM1 select diode input (not used). P16/SW FL segment P16 output / SW step initial diode input (HR only).
  • Page 41 All manuals and user guides at all-guides.com ADJUSTMENT < TUNER SECTION >(HR) < TUNER SECTION >(K) 1. Clock Frequency Check 1. Clock Frequency Check Settings : • Test point : TP6 (CLK) Settings : • Test point : TP6 (CLK) Method : Set to MW 1602kHz and check that the test Method : Set to MW 1602kHz and check that the test point is point is 2052kHz ±...
  • Page 42 All manuals and user guides at all-guides.com < DECK SECTION > 8. Tape Speed Adjustment (DECK 1, DECK 2) 13. REC/PB Frequency response Check (DECK 2) Settings : • Test tape : TTA–100(3kHz) Settings : • Test tape : TTA-615 (CrO •...

  • Page 43: Mechanical Exploded View

    All manuals and user guides at all-guides.com MECHANICAL EXPLODED VIEW 1 / 1 - 43 -...

  • Page 44: Mechanical Parts List

    All manuals and user guides at all-guides.com MECHANICAL PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 88-NF3-090-010 RING,FOOT 42 8A-NF3-201-010 GUIDE,LED-FUNC 43 8A-NF3-213-110 HLDR,HT-SINK L 2 8A-NF3-042-010 PANEL ASSY,TRAY 3 8A-NF3-029-010 BOX,CASS R 44 8A-NF3-214-010 HLDR,HT-SINK R...

  • Page 45: Tape Mechanism Exploded View

    All manuals and user guides at all-guides.com 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) - 45 -...

  • Page 46: Tape Mechanism Parts List

    All manuals and user guides at all-guides.com TAPE MECHANISM PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 82-ZM3-301-510 CHAS ASSY,M2 2 82-ZM1-258-110 SPR-T,PINCH L 3 82-ZM1-341-110 LVR ASSY,PINCH L2 38 82-ZM1-322-010 SPR-T,FR60 4 82-ZM1-333-010 PLATE,LINK 2...
  • Page 47 All manuals and user guides at all-guides.com 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...

  • Page 48: Accessories / Package List

    2 8A-NS3-002-010 PANEL,TW L 12 88-NS5-610-010 CORD,SPKR 3 8A-NS3-003-010 PANEL,TW R 13 88-NS5-611-010 CORD,SPKR B/L 4 8A-NS3-006-010 PANEL,TOP 14 8A-NSJ-006-010 BADGE,AIWA S35 5 8A-NS3-009-010 ADAPTOR, 15 8A-NS3-014-010 CABI,TOP 6 8A-NS3-010-010 PROTECTOR,SQA 16 8A-NS3-015-010 PANEL,DUCT S 7 8A-NS3-011-010 PROTECTOR,TWA 17 8A-NS3-017-010...
  • Page 49 All manuals and user guides at all-guides.com 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9820572 9630472 0251431 Printed in Singapore...

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