Aiwa NSX-BL44EZ Service Manual
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Aiwa NSX-BL44EZ Service Manual

Compact disc stereo system
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SERVICE MANUAL
COMPACT DISC
STEREO SYSTEM
SYSTEM
NSX–BL44
(G)
NSX–BL44
(EZ/K)
NSX–BL46
(EZ)
NSX–DR6
(EZ)
If requiring information about the CD mechanism, see Service Manual of AZG-1
(S/M Code No. 09-001-335-3NC).
NSX-BL44
NSX-BL46
NSX-DR6
BASIC TAPE MECHANISM : 6ZM-3 PR2NM(44/46)
BASIC TAPE MECHANISM : 6ZM-3 YPR2N(DR6)
BASIC CD MECHANISM : AZG-1 ZA3RDM(44/46)
BASIC CD MECHANISM : AZG-1 YZA3RDM(DR6)
CD
CASSEIVER
CX–NBL44
CX–NBL44
CX–NBL46
CX–NDR6
S/M Code No. 09-002-429-5N2
REMOTE
SPEAKER
CONTROLLER
SX-NSZ53
SX–NBL40
RC–ZAS01
SX–NBL42
SX–NBL40
EZ,K,G
EZ
EZ

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Summary of Contents for Aiwa NSX-BL44EZ

  • Page 1 NSX-BL44 EZ,K,G NSX-BL46 NSX-DR6 SERVICE MANUAL BASIC TAPE MECHANISM : 6ZM-3 PR2NM(44/46) COMPACT DISC BASIC TAPE MECHANISM : 6ZM-3 YPR2N(DR6) BASIC CD MECHANISM : AZG-1 ZA3RDM(44/46) STEREO SYSTEM BASIC CD MECHANISM : AZG-1 YZA3RDM(DR6) REMOTE SYSTEM SPEAKER CASSEIVER CONTROLLER NSX–BL44 CX–NBL44 SX-NSZ53 NSX–BL44...

  • Page 2: Specifications

    SPECIFICATIONS Main unit CX-NBL44, CX-NBL46, CX-NDR6 Cassette deck section FM tuner section Track format 4 tracks, 2 channels stereo Tuning range 87.5 MHz to 108 MHz Frequency response 50 Hz – 15000 Hz Usable sensitivity (IHF) 16.8 dBf Recording system AC bias Antenna terminal 75 ohms (unbalanced)

  • 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 the CAUTION instructions below when servicing. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous WARNING! 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 C0018 87-012-368-080 C-CAP,S 0.1-50 Z F C0019 87-016-520-000 CAP,E 3300-65 M SMG 87-020-454-010 IC,DN6851 C0020 87-016-520-000 CAP,E 3300-65 M SMG 87-A21-355-010 IC,STK490-140 C0023 87-016-658-000 CAP,E 4700-35 M SMG 8A-NF8-620-010 C-IC,LC866548V-5R49<B,C,E,F>...
  • Page 7 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C0406 87-010-197-080 C-CAP,S 0.01-25 K B C2012 C0807 87-010-400-080 CAP,E 0.47-50 M 11L SME C0407 87-010-197-080 C-CAP,S 0.01-25 K B C2012 C0808 87-010-401-080 CAP,E 1-50 M 11L SME C0408 87-010-197-080 C-CAP,S 0.01-25 K B C2012...
  • Page 8 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C0325 87-A10-189-040 CAP,E 220-10 M 5L FB0602 87-008-372-080 FLTR,EMI BL01 RN1 C0326 87-A10-189-040 CAP,E 220-10 M 5L FFC0602 88-906-251-110 FF-CABLE,6P 1.25 C0332 87-010-178-080 C-CAP,S 1000P-50 K B C2012 FFE0831 A8-6ZA-191-130 6ZA-1 FEENM<C,D,E,F>...

  • Page 9: Chip Resistor Part Code

    REF. NO PART NO. KANRI DESCRIPTION DECK C.B CON105 87-099-753-010 CONN,11P 9604 S F SFR1 87-024-581-010 SFR,3.3K DIA 6H SOL1 82-ZM1-618-410 SOL ASSY,27 SOL2 82-ZM1-618-410 SOL ASSY,27 87-A90-248-010 SW,MICRO ESE11SH2CXQ 87-A90-248-010 SW,MICRO ESE11SH2CXQ 87-A90-248-010 SW,MICRO ESE11SH2CXQ 87-036-110-010 SW,MICRO SPPB62 87-036-110-010 SW,MICRO SPPB62 82-ZM3-601-010 RBN,CORD,4P-75...

  • Page 10: Transistor Illustration

    TRANSISTOR ILLUSTRATION 2SA1235 S D G E C B B C E E C B 2SC2714 DTC114ES 2SB1370 2SJ460 2SA1981 2SC3052 2SK2541 2SC3331 KTC3199 CMBT5401 2SC5343 CMBT5551 CD1585 CSD1306 CSA952 KRA102S CSC4115 KRA107S KTA1266 KRC102S KTC3198 RT1N441C RT1P141C 2SK2158 2SK360...
  • Page 11 FL (HNA-11MM30) GRID ASSIGNMENT/ANODE CONNECTION GRID ASSIGNMENT ANODE CONNECTION...
  • Page 12 WIRING-1 (MAIN C.B) R622 NOT USED...
  • Page 13 SCHEMATIC DIAGRAM-1 (FUNCTION/AMP SECTION) NOT USED...
  • Page 14 SCHEMATIC DIAGRAM-2 (TUNER SECTION) NOT USED...
  • Page 15 SCHEMATIC DIAGRAM-3 (PT SECTION) WIRING-3 (DECK C.B) WIRING-2 (PT C.B) DECK 2 DECK 1...
  • Page 16 WIRING-4 (FRONT C.B) NOT USED...
  • Page 17 SCHEMATIC DIAGRAM-4 (FRONT SECTION) NOT USED...

  • Page 18: Ic Block Diagram

    IC BLOCK DIAGRAM IC, LA1844 IC, M61506FP IC, BU2092F IC, LC72131D IC, M61503FP...
  • Page 19 IC DESCRIPTION IC, LC866560W-5R50 <46EZ>, LC866548V-5R49 <Except 46EZ> Pin No. Pin Name Description _______________ I-STEREO/I-DRF Stereo detected input/CD DRF input ______ I-IFC/I-SUBQ Tune IF count serial data input/CD SUBQ input O-2PB Deck 2 playback switch output _______ O-POWER System power supply ON/OFF output _______ O-CD-ON CD power ON/OFF output...
  • Page 20 Pin No. Pin Name Description P22/PRO LOGIC FL SEGMENT output P22/PROLOGIC input to diode (not used) P21/RDS FL SEGMENT output P21/RDS input to diode P20/FM1 FL SEGMENT output P20/FM1 input to diode P19/SW FL SEGMENT output P19/SW input to diode P18/LW FL SEGMENT output P18/LW input to diode P17/AMST...
  • Page 21 ADJUSTMENT < TUNER SECTION > < DECK SECTION > 1. Clock frequency Check 10. Tape Speed Adjustment (DECK 2) MAIN C.B Settings : • Test point : TP2 Settings : • Test tape : TTA–100 Method : Set to AM 1602kHz and check that the test point is •...

  • Page 22: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1/1 AZG-1 P.C.B WIRE,BINDER HT-SINK FL401 P.C.B P.C.B HT-SINK FIN1 HT-SINK FIN2 CHAS,MAIN 6ZM-3 PLATE,EARTH MECH...

  • Page 23: Mechanical Main Parts List

    MECHANICAL MAIN PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 8A-NFJ-012-010 WINDOW,CASS 1 30 8A-NFJ-031-010 KEY,CD EDIT E<A,D> 2 8A-NFJ-013-010 WINDOW,CASS 2 30 8A-NFJ-025-010 KEY,CD EDIT U<B,C,E,F> 3 8A-NFJ-035-010 BOX,CASS 1H 31 8A-NFJ-027-010 KEY,DISC 4 8A-NFJ-003-010 BOX,CASS 2 U...
  • Page 24 MECHANISM MAIN PARTS LIST 1/1 <6ZM-3 PR2NM (44/46), 6ZM-3 YPR2N (DR6)> REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 86-ZM3-215-010 1E CHAS ASSY,RS 41 82-ZM1-216-310 0E GEAR,REEL 2 86-ZM3-202-010 0E BASE,HEAD S 42 86-ZM3-213-010 0E S-SCREW,HLDR,MOT 3 3 86-ZM3-205-010 0E SPR-C,RPH S 43 82-ZM1-225-210 0E GEAR,FR 4 82-ZM1-333-210 0E PLATE,LINK 2...

  • Page 25: Mechanism Exploded View

    MECHANISM EXPLODED VIEW 1/1 <6ZM-3 PR2NM (44/46), 6ZM-3 YPR2N (DR6)> DECK C.B SOL 2 (DECK L only) SOL 1 (DECK L SIDE) (DECK R SIDE) LEVER EJECT R HEAD PLATE CAPSTAN N 2.2-41.7 SHLD M3 LEVER EJECT L (DECK 2) CAPSTAN N 2-41.5...
  • Page 26 After replacing the speaker unit, install it turning to Fig-1 Fig-2 6 8A-NSJ-006-010 BADGE,AIWA S35 clockwise direction until "click" sound comes out. 7 87-NS7-611-010 CORD,SPKR 8 88-MS1-608-010...
  • Page 27 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 920074 Printed in Singapore...

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