Aiwa NSX-SZ900 Service Manual
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Aiwa NSX-SZ900 Service Manual

Aiwa NSX-SZ900 Service Manual

Compact disc stereo system
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SERVICE MANUAL
COMPACT DISC
STEREO SYSTEM
SYSTEM
NSX-SZ900
• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
of CX-NSZ900 (LH), (S/M Code No. 09-013-444-1T1).
• If requiring information about the CD mechanism, see Service Manual of BZG-5,
(S/M Code No. 09-00C-353-3N2).
NSX-SZ900
BASIC TAPE MECHANISM : 2ZM-3MK2 PR7NM
BASIC CD MECHANISM : BZG-5 ZD3N1DM
CD
CASSEIVER
CX-NSZ900
S/M Code No. 09-015-444-1R1
SPEAKER
CONTROLLER
SX-WNSZ900
SX-S85
LH
REMOTE
RC-BAS04

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Summary of Contents for Aiwa NSX-SZ900

  • Page 1 NSX-SZ900 SERVICE MANUAL COMPACT DISC BASIC TAPE MECHANISM : 2ZM-3MK2 PR7NM STEREO SYSTEM BASIC CD MECHANISM : BZG-5 ZD3N1DM REMOTE SYSTEM SPEAKER CASSEIVER CONTROLLER SX-WNSZ900 NSX-SZ900 CX-NSZ900 RC-BAS04 SX-S85 • This Service Manual is the “Revision Publishing” and replaces “Simple Manual”...

  • Page 2: Specifications

    SPECIFICATIONS <FM tuner section> <CD 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 85 dB (1 kHz, 0 dB) Harmonic distortion 0.05 % (1 kHz, 0 dB) <AM Tuner section>...

  • 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 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

    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 87-012-368-080 C-CAP,S 0.1-50 Z F 87-012-368-080 C-CAP,S 0.1-50 Z F 8B-NF6-601-030 C-IC,LC876670B-5V72 87-012-368-080 C-CAP,S 0.1-50 Z F 87-A21-911-040 C-IC,M61515FP 87-012-368-080 C-CAP,S 0.1-50 Z F 87-A21-023-040 C-IC,BA3835F 87-010-918-090...
  • Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C373 87-A10-794-080 C-CAP,U 0.15-16 Z F C638 87-A12-376-080 CAP,M 0.1-100 J CP C374 87-A10-794-080 C-CAP,U 0.15-16 Z F C639 87-A12-091-080 CAP,E 10-50 SMG C378 87-010-831-080 C-CAP,U 0.1-16 Z F C641 87-A12-085-080 CAP,E 0.33-50 SMG...
  • Page 8 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C911 87-012-170-080 C-CAP,U 8P-50 D CH L905 88-ZA1-624-010 COIL,FM IFT 7-6.2(COILS) C912 87-012-195-080 C-CAP,U 100P-50 J CH L906 88-ZA1-603-010 COIL,FM-OSC-U 2G C913 87-012-286-080 C-CAP,U 0.01-25 B L951 8A-NF8-667-010 COIL,AM PACK 4(TOK) C914 87-012-166-080...
  • Page 9 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C921 87-012-270-080 C-CAP,U 470P-50 K B C592 87-012-195-080 C-CAP,U 100P-50 J CH C923 87-010-759-080 C-CAP,U 0.1-25 Z F C593 87-012-195-080 C-CAP,U 100P-50 J CH C925 87-A12-317-080 C-CAP,U 0.1-50 Z F C802 87-012-197-080 C-CAP,U 150P-50 J CH...
  • Page 10 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 87-010-759-080 C-CAP,U 0.1-25 Z F C311 87-A12-092-080 CAP,E 22-50 SMG 87-010-759-080 C-CAP,U 0.1-25 Z F C312 87-A12-092-080 CAP,E 22-50 SMG 87-010-759-080 C-CAP,U 0.1-25 Z F C315 87-012-199-080 C-CAP,U 220P-50 J CH 87-010-759-080 C-CAP,U 0.1-25 Z F C316...

  • Page 11: 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 – 11 –...

  • Page 12: Transistor Illustration

    TRANSISTOR ILLUSTRATION E C B E C B B C E G D S CDA1585BC CC5551 2SB1342 2SK3053 CSC4115BC 2SA1980G 2SB1588 KTA1266GR 2SA1981Y 2SD1933 KTC3198GR 2SD2439 B C E E C B CSB1370EF 2SA933AS(R) 2SK2158 2SK360E 2SJ106GR 2SA1235F KRA102S 2SC2714O KRA104S 2SC3052F KRA107S...
  • Page 13 WIRING – 1 (MAIN) – 13 –...
  • Page 14 SCHEMATIC DIAGRAM – 1 (MAIN : 1 / 6 <P – SUPPLY SECTION>) – 14 –...
  • Page 15 SCHEMATIC DIAGRAM – 2 (MAIN : 2 / 6 <FUNCTION SECTION>) – 15 –...
  • Page 16 SCHEMATIC DIAGRAM – 3 (MAIN : 3 / 6 <AMP SECTION>) – 16 –...
  • Page 17 SCHEMATIC DIAGRAM – 4 (MAIN : 4 / 6 <DECK SECTION / HEAD – 1 / HEAD – 2>) – 17 –...
  • Page 18 SCHEMATIC DIAGRAM – 5 (MAIN : 5 / 6 <DSP SECTION>) – 18 –...
  • Page 19 SCHEMATIC DIAGRAM – 6 (MAIN : 6 / 6 <TUNER SECTION>) – 19 –...
  • Page 20 WIRING – 2 (FRONT) – 20 –...
  • Page 21 WIRING – 3 (KEY) – 21 –...
  • Page 22 SCHEMATIC DIAGRAM – 7 (FRONT / KEY / DECK) – 22 –...
  • Page 23 WIRING – 4 (AMP 3M) – 23 –...
  • Page 24 SCHEMATIC DIAGRAM – 8 (AMP 3M) – 24 –...
  • Page 25 WIRING – 5 (PANORAMA AMP) – 25 –...
  • Page 26 SCHEMATIC DIAGRAM – 9 (PANORAMA AMP) – 26 –...
  • Page 27 WIRING – 6 (PT) – 27 –...
  • Page 28 SCHEMATIC DIAGRAM – 10 (PT) – 28 –...
  • Page 29 WIRING – 7 (DECK / HEAD – 1 / HEAD – 2) – 29 –...
  • Page 30 FL (BJ815GNK) GRID ASSIGNMENT / PIN CONNECTION / ANODE CONNECTION GRID ASSIGNMENT PIN CONNECTION – 30 –...
  • Page 31 ANODE CONNECTION NOTE: = (UP) = (DOWN) – 31 –...

  • Page 32: Ic Block Diagram

    IC BLOCK DIAGRAM – 32 –...
  • Page 33 – 33 –...
  • Page 34 IC DESCRIPTION IC, LC876670B–5V72 Pin No. Pin Name Description I–SUBQ CD sub-code input. O–BUZ Touch-sensor beep sound output. (Not used) O–MOTOR Tape motor ON/OFF. O–SOL1 Tape 1 plunger ON/OFF. O–SOL2 Tape 2 plunger ON/OFF. O–RSM–CE Rhythm IC chip enable output. O–HSP PLL-IC chip enable output.
  • Page 35 Pin No. Pin Name Description DOLBY / P19 DOLBY enable diode input (Not used) / FL segment P19 output. CASINO / P18 Casino DEMO diode input / FL segment P18 output. KARAOKE / P17 Karaoke enable diode input (Not used) / FL segment P17 output. PANORAMA / P16 Panorama enable diode input (Not used) / FL segment P16 output.
  • Page 36 ADJUSTMENT < DECK / TUNER / FRONT > G DECK C.B SFR1 A MAIN C.B SFR351 SFR352 J101 <DECK SECTION> 1. Adjusting Tape Speed (DECK 2) Requirements • Measuring Device: WOW & FLUTTER Meter (Frequency Counter) Test Tape: TTA-100 (3 kHz) Test Point: HP OUT (J101) Adjustment Point: SFR 1 WOW &FLUTTER METER...
  • Page 37 3. Checking WOW & FLUTTER (DECK 1, DECK 2) Requirements Same as number 1 1) Connect the WOW & FLUTTER Meter to the HP OUT. 2) Set the indicator to JIS and the mode to W RMS (WTD) of the WOW & FLUTTER. 3) Playback the centre of the test tape (TTA-100) and check that it is below 0.21 %.
  • Page 38 2) Connect the output from the generator to the attenuator and connect the AUX from the set to the attenuator. 3) Insert the tape (TTA-602) into DECK 2 and record the 1 kHz signal from AUX. 4) At this time, adjust the attenuator until TP8 and TP9 output levels become 21 mV. 5) Record 1 kHz and 10 kHz alternately.
  • Page 39 < TUNER SECTION > 1. Clock Frequency Check 8. Output Level Check Settings : • Test point : TP11 (CLK) <AM> Method : Set to AM 1710 kHz and check that the test point is Settings : • Test point : TP14 (Lch), TP15 (Rch) 2160 kHz ±...

  • Page 40: Cd Test Mode

    CD TEST MODE 1. How to Activate CD Test Mode While pressing the FUNCTION button, insert the AC plug to the power outlet. When the test mode is started, the message “ TEST” is displayed. 2. How to Exit CD Test Mode Press the POWER button, push other FUNCTION buttons or disconnect the AC plug.

  • Page 41: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1 / 1 PLATE,SHILD SIDE BZG-5 HT-SINK,FET HT-SINK BINDER WIRE PLATE,PT 2ZM-3MK2 PLATE,EARTH MECH CHAS,MAIN – 41 –...

  • Page 42: Mechanical Parts List

    PANEL,OPE 8B-NF7-238-010 HLDR,FAN LOW 8B-NF6-041-010 CABI,FR H 87-NF4-221-010 HLDR,CABLE 8B-NF6-061-010 WINDOW,DISPLAY H 87-A80-092-010 AC CORD ASSY,E BLK SUN FAI 87-CE3-023-010 BADGE,AIWA 30N SILV 87-085-185-010 BUSHING, AC CORD (E) 8B-NF6-010-010 PANEL,CD 8B-NF6-033-010 PANEL,RIGHT V-2 8B-NF6-005-010 WINDOW,CD 88-915-181-110 FF-CABLE,15P 1.25 8B-NF7-040-010 PANEL,TOP V-2 ANF8 88-905-061-110 FF-CABLE,5P 1.25 60MM...

  • Page 43: Tape Mechanism Exploded View

    TAPE MECHANISM EXPLODED VIEW 1 / 1 PLATE SHLD,M3 GEAR, PLAY GEAR, PLAY PLATE SHLD,M3 – 43 –...

  • Page 44: Tape Mechanism Parts List

    TAPE MECHANISM PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 82-ZM3-335-310 PULLEY,COUPLER M3 36 82-ZM3-340-010 SH,BELT D2 2 87-B10-043-010 W-P,0.99-4-0.25 SLT 37 82-ZM1-242-010 LVR,CAS 3 86-ZM1-206-010 BELT,MAIN L 38 82-ZM1-244-510 SPR-C,BT 4 82-ZM1-322-010 SPR-T,FR 60...

  • Page 45: 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 46: Accessories / Package List

    SPEAKER PARTS LIST (SX-WNSZ900) <YLSL> REF. NO. PART NO. KANRI DESCRIPTION 1 8B-NS6-001-010 PANEL,FR A 2 8B-NS7-002-010 PANEL,SP A 3 8B-NS7-003-010 PANEL,SP B 4 8B-NS7-005-010 PANEL,BA A 5 8B-NS7-004-010 PANEL,DUCT 6 8B-NS8-007-010 PROTECTOR,M 7 8B-NS6-604-010 SPKR,W 200 40/4 8 8B-NS7-604-010 SPKR,M 100W 9 88-NSK-610-010 SPKR,CERAMIC ASSY...
  • Page 47 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 2000075 921338 Printed in Singapore...

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