Aiwa NSX-BL24 Service Manual
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Aiwa NSX-BL24 Service Manual

Compact disc stereo system
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See also: Service Manual
SERVICE MANUAL
COMPACT DISC STEREO SYSTEM
SYSTEM
NSX–BL24
NSX–BL26
NSX–BL28
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
NSX-BL24 <EZ, K> / BL26 <EZ> / BL28 <EZ> (S/M Code No. 09-003-426-1T2) &
NSX-BL28 <K> (S/M Code No. 09-004-426-1T3).
• If requiring information about the CD mechanism, see Service Manual of AZG-1,
(S/M Code No. 09-001-335-3NA).
NSX-BL24
NSX-BL26
NSX-BL28
BASIC TAPE MECHANISM : ZZM-3 YPR1NC
BASIC CD MECHANISM : AZG-1 ZD8RDC
CD
CASSEIVER
CX–NBL24
CX–NBL26
CX–NBL28
S/M Code No. 09-004-426-1R2
SPEAKER
CONTROLLER
SX–NBL25
SX–NBL26
SX–NBL28
<SUB WOOFER>
SX–S20
<SATELLITE>
EZ, K
EZ
EZ, K
REMOTE
RC–ZAS02

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Summary of Contents for Aiwa NSX-BL24

  • Page 1 <SATELLITE> • This Service Manual is the "Revision Publishing" and replaces "Simple Manual" NSX-BL24 <EZ, K> / BL26 <EZ> / BL28 <EZ> (S/M Code No. 09-003-426-1T2) & NSX-BL28 <K> (S/M Code No. 09-004-426-1T3). • If requiring information about the CD mechanism, see Service Manual of AZG-1, (S/M Code No.

  • Page 2: Specifications

    SPECIFICATIONS Main unit CX-NBL24/26/28 Speaker system SX-NBL25 <NSX-BL24> <FM Tuner section> Speaker system SX-NBL26 <NSX-BL26> Tuning range 87.5 MHz to 108 MHz Speaker system 3 way, bass reflex (magnetic shield type) Usable sensitivity (IHF) 16.8 dBf Speaker units Woofer: 140 mm cone type...

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

    PROTECTION OF EYES FROM LASER BEAM DURING SERVICING CAUTION This set employs laser. Therefore, be sure to follow carefully 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 87-A10-520-000 CAP,E 3300-35 M SMG<EXCEPT 28K> 87-A12-182-090 CAP,E 3300-35 M 85 SAMXON<28K> 87-A21-269-010 IC,EW732 87-A10-520-000 CAP,E 3300-35 M SMG<EXCEPT 28K> 87-A21-397-010 IC,STK490-070 87-010-385-080 CAP,ELECT 220-25V 87-A21-419-040 C-IC,NJM14558MD-TE2 87-010-247-080...
  • Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C408 87-010-197-080 CAP,CHIP 0.01 DM C821 87-010-405-080 CAP,ELECT 10-50V C409 87-010-182-080 C-CAP,S 2200P-50 B C823 87-012-349-080 C-CAP,S 1000P-50 CH C410 87-010-182-080 C-CAP,S 2200P-50 B C824 87-010-405-080 CAP,ELECT 10-50V C411 87-010-405-080 CAP,ELECT 10-50V...
  • Page 8 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION L801 87-A50-540-010 COIL,FM DET(TOK)<EXCEPT 28K> C920 87-012-369-080 C-CAP,S 0.047-50F L801 87-A50-608-010 COIL,FM DET-N(TOK)<28K> C921 87-010-186-080 CAP,CHIP 4700P L802 87-A91-551-010 FLTR,PCFJZH-450 L(TOK) C951 87-010-312-080 C-CAP,S 15P-50 CH L811 87-005-847-080 COIL,2.2UH(CECS) C952 87-012-155-080...

  • Page 9: Chip Resistor Part Code

    REF. NO. PART NO. KANRI DESCRIPTION 87-A90-673-010 SW,MICRO ESE11SH1C 87-A91-500-010 SW,MICRO MPU11470MLB0 87-A91-500-010 SW,MICRO MPU11470MLB0 87-A91-500-010 SW,MICRO MPU11470MLB0 87-A90-673-010 SW,MICRO ESE11SH1C 82-ZM3-601-010 RBN-CORD,4P-75 CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code Value of resistor Chip resistor Dimensions (mm) Symbol Wattage Type...

  • Page 10: Transistor Illustration

    TRANSISTOR ILLUSTRATION E C B E C B B C E S D G CD1585 2SC3331 2SB1370 2SJ460 CSA952 2SK2541 CSC4115 KTA1266 KTC3198 2SA1235 2SK2158 2SK360 2SC2714 2SC3052 CMBT5401 CMBT5551 CSD1306 DTC114EK KRA102S KRC102S KRC104S RT1P141C RT1P144C – 10 –...

  • Page 11: Pin Connection

    FL (HNA–10SS12) GRID ASSIGNMENT / ANODE CONNECTION / PIN CONNECTION GRID ASSIGNMENT ANODE CONNECTION PIN CONNECTION – 11 –...

  • Page 12: Wiring - 1 (Main)

    WIRING – 1 (MAIN) – 12 –...
  • Page 13 – 13 –...

  • Page 14: Schematic Diagram - 2 (Main : 2 / 2 )

    SCHEMATIC DIAGRAM – 2 (MAIN : 2 / 2 <TUNER SECTION>) – 14 –...

  • Page 15: Wiring - 2 (Front)

    WIRING – 2 (FRONT) – 15 –...

  • Page 16: Schematic Diagram - 3 (Front / Deck)

    SCHEMATIC DIAGRAM – 3 (FRONT / DECK) – 16 –...
  • Page 17 WIRING – 3 (PT) – 17 –...

  • Page 18: Schematic Diagram - 4 (Pt)

    SCHEMATIC DIAGRAM – 4 (PT) – 18 –...

  • Page 19: Wiring - 4 (Deck)

    WIRING – 4 (DECK) FROM B FRONT C. B CN104 FFC104 D DECK C . B 1 3 5 7 9 11 2 4 6 8 10 – 19 –...

  • Page 20: Ic Block Diagram

    IC BLOCK DIAGRAM – 20 –...
  • Page 21 IC DESCRIPTION µ µ PD780226GF-014-3BA <EXCEPT 26EZ> / PD780228GF-064-3BA <26EZ ONLY> Pin No. Pin Name Description O-MOTOR DECK MOTOR ON/OFF output. O-SOL1 DECK1 solenoid output. O-SOL2 DECK2 solenoid output. – Not connected. – Not connected. O-SET_LED SET LED ON/OFF output. O-CLEAR_LED CLEAR LED ON/OFF output.
  • Page 22 Pin No. Pin Name Description I-HOLD Power failure detected input. I-CDSW CD mecha switch input. I-SPEANA_L A/D L-input for spectrum analyser level display. I-SPEANA_R A/D R-input for spectrum analyser level display. I-KEY1 Key1 input. I-KEY2 Key2 input. I-KEY3 Key3 input. I-TU_SIG Tuner signal input.
  • Page 23 IC, LC72131D Pin No. Pin Name Description X-IN A crystal oscillator (4.5MHz) is connected between these pins. X-OUT – Not connected. To enable the IC. Active "H". Digital data input from CPU (µPD780226GF / µPD780228GF) when relevant key is operated. Active "H".
  • Page 24 ADJUSTMENT – 1 <TUNER / DECK> MAIN C.B 17 16 15 14 13 12 11 10 9 L802 TC942 L801 L941 L942 TP4(DC) IC801 L951 SFR451 SFR452 TP3(DC) TP8(LCH) (CLK) (3/3) (1/3) (GND) IC301 TP9(RCH) TP1(VT) FFE831 DECK–1 P HEAD DECK–2 R/P/E HEAD DECK C.B SFR1...
  • Page 25 < DECK SECTION > 7. FM VT Check 12. Tape Speed Adjustment (DECK 2) Settings : • Test point : TP1 (VT) Settings : • Test tape : TTA–100 • Test point : TP8 (Lch), TP9 (Rch) Method : Set to FM 87.5MHz check that the test point is more than 0.5V.
  • Page 26 ADJUSTMENT – 2 <FRONT> FRONT C.B FL901 D983 TP11 (KEY-SCAN) IC901 (GND) L951 C913 < FRONT SECTION > µ -CON OSC Adjustment Settings : • Test point : TP11 (KEY-SCAN), (GND) • Adjustment location : L951 Method : Connect a frequency counter across TP11 and GND via a CR network filter as shown below.
  • Page 27 MECHANICAL EXPLODED VIEW 1 / 1 (NSX–BL24 / 26 / 28) <EZ>, (NSX–BL24) <K> AZG-1ZD8RDC WIRE,BINDER P.C.B P.C.B FL901 HT-SINK P.C.B CHAS,MAIN ZZM-3 YPR1NC PLATE,EARTH – 27 –...

  • Page 28: Color Name Table

    MECHANICAL PARTS LIST 1 / 1 (NSX–BL24 / 26 / 28) <EZ>, (NSX–BL24) <K> REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NF0-007-010 WINDOW,CASS 2 27 88-913-301-110 FF-CABLE,13P-1.25 2 8A-NF0-006-010 WINDOW,CASS 1 28 88-911-101-110 FF-CABLE,11P 1.25 3 8A-NF0-004-010 BOX,CASS 2 29 8A-NF0-201-010...
  • Page 29 MECHANICAL EXPLODED VIEW 1 / 1 (NSX–BL28) <K> AZG-1 ZD8RDC WIRE,BINDER P.C.B P.C.B FL901 HT-SINK P.C.B CHAS,MAIN ZZM-3 YPR1NC PLATE,EARTH MECHA C – 29 –...
  • Page 30 MECHANICAL PARTS LIST 1 / 1 (NSX–BL28) <K> REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NF0-007-010 WINDOW,CASS 2 31 8A-NF8-005-010 PANEL,TOP 2 8A-NF0-006-010 WINDOW,CASS 1 32 8A-NF8-006-010 WINDOW,TOP 3 8A-NF0-004-010 BOX,CASS 2 33 8A-NF8-206-010 HLDR,PWB M 4 8A-NF0-003-010 BOX,CASS 1...

  • Page 31: Tape Mechanism Exploded View

    TAPE MECHANISM EXPLODED VIEW 1 / 1 TERMINAL, TERMINAL,LB1 IC, EW732 IC, EW732 P.C.B – 31 –...

  • Page 32: Tape Mechanism Parts List

    TAPE MECHANISM PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 8Z-ZM3-227-010 BELT,MAIN M3 8Z-ZM3-233-010 SPR-T,BRG M3 8Z-ZM3-235-010 BELT,MAIN L 84-ZM2-227-310 SPR-C,AZIMUTH 8Z-ZM1-235-010 PULLEY,MOT 87-A90-403-110 HEAD,RPH MS15R 87-045-347-010 MOT,SHU2L 70 87-A90-404-010 HEAD,EH LE15B 8Z-ZM1-232-010 GEAR,IDL FF/REW 8Z-ZM3-239-010...

  • Page 33: Speaker Disassembly Instructions

    SPEAKER DISASSEMBLY INSTRUCTIONS 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 Plastic head hammer unit and then remove the speaker units. flat head screwdriver Cut chisel How to Remove the PANEL, FR Type.2...

  • Page 34: Speaker Parts List

    SPEAKER PARTS LIST (SX–NBL25 / SX–NBL26) <YSC9> REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NSA-001-010 PANEL,FR 2 8A-NSA-003-010 GRILLE,FRAME ASSY<25YSC9> 2 8A-NSA-012-010 GRILLE,FRAME ASSY RDS<26YSC9> 3 8A-NSK-602-010 SPKR,W 140 4 8A-NSK-606-010 SPKR,T 60 5 87-NSH-612-010 CERAMIC ASSY 6 87-NS7-611-010 CORD,SPKR SPEAKER PARTS LIST (SX–NBL28) <YSC9>...
  • Page 35 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9420025 0251431 Printed in Singapore...

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