Aiwa NSX-DS50 Service Manual

Compact disc stereo system

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Service manual (66 pages)

Operating instructions manual (29 pages)

Operating instructions manual (29 pages)

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Page 1 CX-NDS55 SX-C610 • This Service Manual is the “Revision Publishing” and replaces “Simple Manual” of NSX-DS50 / DS55 <U>, (S/M Code No. 09-014-445-3T1). • If requiring information about the CD mechanism, see Service Manual of BZG-5, (S/M Code No. 09-00C-353-3N2).
Page 2: Specifications
SPECIFICATIONS MAIN UNIT CX-NDS50 / CX-NDS55 GENERAL Power requirements 120 V AC, 60 Hz TUNER Power consumption 175 W FM tuning range 87.5 MHz to 108 MHz Power consumption With ECO mode on: 0.6 W FM usable sensitivity (IHF) 13.2 dBf in standby mode With ECO mode off: 35 W FM antenna terminals...
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 MAIN C.B 87-A21-893-040 C-IC,NJM14558V-TE2 87-012-368-080 C-CAP,S 0.1-50 F 87-A20-783-040 C-IC,BA7762AFS 87-012-368-080 C-CAP,S 0.1-50 F 87-A21-703-040 C-IC,SN74LV244APW 87-012-368-080 C-CAP,S 0.1-50 F 87-A21-916-040 C-IC,SN74LV125APW 87-012-368-080 C-CAP,S 0.1-50 F 87-A21-884-040 C-IC,CS4228A 87-012-368-080...
Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C275 87-A12-091-080 CAP,E 10-50 SMG C689 87-A12-058-080 CAP,E 470-6.3 M SMG C301 87-012-278-080 C-CAP,U 2200P-50 B C701 87-012-195-080 C-CAP,U 100P-50CH C301 87-012-188-080 C-CAP,U 47P-50 CH C702 87-012-195-080 C-CAP,U 100P-50CH C302 87-012-188-080 C-CAP,U 47P-50 CH...
Page 8 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C997 87-010-831-080 C-CAP,U,0.1-16F C501 87-012-195-080 C-CAP,U 100P-50CH C998 87-A12-071-080 CAP,E 47-25 SMG C502 87-012-195-080 C-CAP,U 100P-50CH C999 87-A11-155-080 CAP,TC U 0.01-16 Z F C503 87-012-195-080 C-CAP,U 100P-50CH CF831 87-008-261-010 FILTER, SFE10.7MA5 C504...
Page 9 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION S335 87-A90-095-080 SW,TACT EVQ11G04M C216 87-A11-538-080 C-CAP,S 0.12-25 J B S341 87-A90-095-080 SW,TACT EVQ11G04M C217 87-012-277-080 C-CAP,U 1800P-50 K B GRM S342 87-A90-095-080 SW,TACT EVQ11G04M C219 87-012-277-080 C-CAP,U 1800P-50 K B GRM S343 87-A90-095-080 SW,TACT EVQ11G04M...
Page 10 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION FB702 87-008-372-080 FILTER, EMI BL OIRNI PT C.B FB801 87-008-372-080 FILTER, EMI BL OIRNI FB802 87-008-372-080 FILTER, EMI BL OIRNI 87-A10-831-010 CAP,E 1000-25 M SMG X701 87-A70-115-010 VIB,XTAL 12.288MHZ 87-A61-110-010 CONN,9P V TID-A 8B-NCK-612-010...
Page 11: Chip Resistor Part Code
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 3216 0.55 TRANSISTOR ILLUSTRATION B C E E C B E C B...
Page 12 WIRING – 1 (MAIN / FAN / VM2) – 12 –...
Page 13 SCHEMATIC DIAGRAM – 1 (MAIN 1 / 4 / FAN) – 13 –...
Page 14 SCHEMATIC DIAGRAM – 2 (MAIN 2 / 4 : TUNER) – 14 –...
Page 15 SCHEMATIC DIAGRAM – 3 (MAIN 3 / 4 : AMP) – 15 –...
Page 16 SCHEMATIC DIAGRAM – 4 (MAIN 4 / 4 : DECK) – 16 –...
Page 17: Wiring - 2 (Front)
WIRING – 2 (FRONT) – 17 –...
Page 18: Schematic Diagram - 5 (Front / Deck)
SCHEMATIC DIAGRAM – 5 (FRONT / DECK) – 18 –...
Page 19 WIRING – 3 (AC3) <1 / 2> – 19 –...
Page 20 WIRING – 3 (AC3) <2 / 2> – 20 –...
Page 21 SCHEMATIC DIAGRAM – 6 (AC3 / VM2) – 21 –...
Page 22 WIRING – 4 (AMP / JACK / DET) – 22 –...
Page 23 SCHEMATIC DIAGRAM – 7 (AMP / JACK / DET) – 23 –...
Page 24 WIRING – 5 (PT) – 24 –...
Page 25: Schematic Diagram - 8 (Pt)
SCHEMATIC DIAGRAM – 8 (PT) – 25 –...
Page 26 WIRING – 6 (DECK) TO FRONT C.B CN104 J DECK C.B (FFC104) 11 9 7 5 3 1 10 8 6 4 2 (CAM2) (CAM1) (REA) (CST1) (CST2) SOL2 SOL1 SFR1 TAPE MOTOR – 26 –...
Page 27: Ic Block Diagram
IC BLOCK DIAGRAM – 27 –...
Page 28 – 28 –...
Page 29 FL (HNA-08MM29) GRID ASSIGNMENT AND ANODE CONNECTION GRID ASSIGNMENT – 29 –...
Page 30 ANODE CONNECTION (UP) (DOWN) – 30 –...
Page 31 IC DESCRIPTION µ PD784975AGF-102-3BA Pin Name Description Pin No. AVDD – Power supply. I-HOLD Power failure detected input. I-CDSW CD mecha switch A/D converter input. I-SPEANA_1 A/D input for spectrum analyser level display. I-SPEANA_2 A/D input for spectrum analyser level display. I-SPEANA_3 A/D input for spectrum analyser level display.
Page 32 Pin Name Description Pin No. O-DSC/O-DATA Function IC / Tuner IC, data output. I-STEREO Tuner STEREO detect input. I-IFC Tune IF count serial data input. O-5VDSPRESET IC, CS49326 reset output. I-2VINTREQ IC, CS49326 INT input. – Not connected. O-STB(SHIFT) Shift register strobe output. O-PLL_CLK PLL IC clock enable output.
Page 33 ADJUSTMENT <TUNER / FRONT / DECK> < TUNER SECTION > < DECK SECTION > 1. Clock Frequency Check 9. Tape Speed Adjustment (DECK 2) Settings : • Test point : TP2(CLK) Settings : • Test tape : TTA–100 Method : Set to AM 1710kHz and check that the test point is •...
Page 34: Cd Test Mode
CD TEST MODE 1. How to Start the CD Test Mode While pressing the FUNCTION button, insert the AC plug to the power outlet. When the test mode is started, the message [CD TEST] is displayed. 2. How to Exit the CD Test Mode Press the POWER button or disconnect the AC plug.
Page 35: Mechanical Exploded View
MECHANICAL EXPLODED VIEW 1 / 1 BZG-5 ZD3NM WIRE, BINDER WIRE, FL901 BINDER WIRE, HT-SINK,S BINDER HT-SINK, FIN T2 17 18 PLATE,EATH MECH ZZM-3 PR3NM CHAS,MAIN – 35 –...
Page 36: Mechanical Parts List
MECHANICAL PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 8B-NFK-008-010 PANEL,TRAY 39 87-A80-149-010 AC CORD ASSY,U BLK 2 8B-NFK-013-010 WINDOW,TRAY 40 8B-NF7-236-010 HLDR,PWB PNRM R 3 8B-NCK-011-010 WINDOW,DISP U<50> 41 8B-NCK-206-010 HLDR,TR 1 3 8B-NCK-013-010 WINDOW,DISP U DS55<55>...
Page 37: Tape Mechanism Exploded View
TAPE MECHANISM EXPLODED VIEW 1 / 1 TERMINAL, TERMINAL,LB1 IC, EW732 IC, EW732 – 37 –...
Page 38: 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-A92-198-010 HEAD,PH HASVH 2504A 87-045-347-010 MOT,SHU2L 70 87-A90-404-010 HEAD,EH LE15B 8Z-ZM1-232-010 GEAR,IDL FF/REW...
Page 39: General Speaker Disassembly Instructions (For Reference)
GENERAL SPEAKER DISASSEMBLY INSTRUCTIONS (FOR REFERENCE) 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 40: Accessories / Package List
SPEAKER PARTS LIST SX-NAJ502 (YUSC,YUSC9,YUSL) REF. NO. PART NO. KANRI DESCRIPTION 1 8B-NS0-001-010 PANEL,FR 2 8B-NS0-003-010 GRILLE,FRAME ASSY 3 8B-NS0-008-010 PROTECTOR,TW 4 8B-NSK-602-010 SPKR,W 160<YUSC> 4 8B-NS0-602-010 SPKR,W 160 30/4<YUSC9,YUSL> 5 87-NSH-612-010 SPKR,CERAMIC ASSY 6 87-NS7-611-010 CORD,SPKR 7 8B-NSK-604-010 SPKR,T 60 SPEAKER PARTS LIST SX-R29 0 (YUSC) REF.
Page 41 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9820543 9301978 921338 Printed in Singapore...

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Aiwa NSX-DS50 Service Manual

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