Aiwa NSX-SZ20 Service Manual

Compact disc stereo system

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Service manual (38 pages)

Service manual (38 pages)

Service manual (34 pages)

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Page 1 ZZM-3 YPR1NF AZG-1 YZD8RDM • This Service Manual is the “Revision Publishing” and replaces “Simple Manual” NSX-SZ20/22 (EZ), (S/M Code No. 09-99C-423-4T2) and NSX-SZ27 (EZ), (S/M Code No. 09-001-423-4T3). • If requiring information about the CD mechanism, see Service Manual of AZG-1, (S/M Code No.
Page 2: Specifications
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) 16.8 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) <MW 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-A10-520-000 CAP,E 3300-35 M SMG 87-A10-520-000 CAP,E 3300-35 M SMG 87-A21-397-010 IC,STK490-070 87-010-385-080 CAP, ELECT 220-25V 87-A21-419-040 IC,NJM14558MD-TE2 87-010-247-080 CAP, ELECT 100-50V 87-A21-401-040 C-IC,M61503FP 87-010-430-080 CAP, ELECT 100-63 87-A21-415-010...
Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C409 87-010-182-080 C-CAP,S 2200P-50 B C823 87-012-349-080 C-CAP,S 1000P-50 J 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 C825 87-010-596-080 CAP, S 0.047-16 C412 87-010-405-080...
Page 8 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION L451 87-007-342-010 COIL,OSC 85K BIAS C921 87-010-186-080 CAP,CHIP 4700P-50 K B L801 87-A50-540-010 COIL,FM DET(TOK) C951 87-010-312-080 C-CAP,S 15P-50 CH L802 87-A91-551-010 FLTR,PCFJZH-450 L(TOK) C952 87-012-155-080 C-CAP 180P-50CH L811 87-005-847-080 COIL,2.2UH(CECS)
Page 9: Chip Resistor Part Code
REF. NO. PART NO. KANRI DESCRIPTION S349 87-A90-164-080 SW,TACT SKQNAB(N)<27EZ> S350 87-A91-024-180 SW,TACT KSH0611BT<20EZ,20K,22EZ> S350 87-A90-164-080 SW,TACT SKQNAB(N)<27EZ> S361 87-A91-633-010 SW,RTRY XRE012103PVB25FINA 1-2 S371 87-A91-632-010 SW,RTRY XRE012103PVB25FINB 1-2 PT C.B C183 87-010-387-080 CAP,E 470-25 SME C184 87-010-403-080 CAP, ELECT 3.3-50V 8A-NF9-612-010 PT,ANF-9 U PT181...
Page 10: Transistor Illustration
TRANSISTOR ILLUSTRATION E C B E C B B C E E C B CD1585BC 2SC3331 CSC4115BC 2SB1370 CSA952K KTA1266GR KTC3198GR E C B S D G DTC114ES 2SJ460 2SK2158 DTC114EK 2SA1235F KTC3199GR 2SK2541 KRC102S 2SC2714 KRC104S 2SC3052F CMBT5401 RT1N141C CMBT5551 RT1N441C CSD1306E...
Page 11 FL (HNA-10SS12) GRID ASSIGNMENT AND ANODE CONNECTION GRID ASSIGNMENT ANODE CONNECTION – 11 –...
Page 12 WIRING - 1 (MAIN) – 12 –...
Page 13 SCHEMATIC DIAGRAM – 1 (MAIN 1 / 2 : AMP) – 13 –...
Page 14 SCHEMATIC DIAGRAM – 2 (MAIN 2 / 2 : TUNER) – 14 –...
Page 15: Wiring - 2 (Front)
WIRING - 2 (FRONT) – 15 –...
Page 16: Schematic Diagram - 3 (Front)
SCHEMATIC DIAGRAM – 3 (FRONT) – 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 D DECK C . B FC104 – 19 –...
Page 20: Ic Block Diagram
IC BLOCK DIAGRAM IC, LA1843 IC, LC72131D – 20 –...
Page 21 IC, BU1920FS <22EZ ONLY> IC, M61503FP – 21 –...
Page 22 IC DESCRIPTION µ PD780226GF-012-3BA / 014-3BA / 059-3BA Pin Name Description Pin No. 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. O-PRESET_LED PRESET LED ON/OFF output.
Page 23 Pin Name Description Pin No. 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. AVSS – GND. O-PLL_CLK PLL clock enable output. O-PLL_CE Chip enable output for tuner PLL.
Page 24 ADJUSTMENT <TUNER / DECK / MICON> A MAIN C.B 14 13 L801 TC942 L802 L942 L941 TP4(DC BAL) IC801 L951 SFR 451 SFR 452 TP3(DC BAL) TP8 (LCH) (3/3) (1/3) (CLK) IC301 TP9 (RCH) TP1(VT) FFE801 < TUNER SECTION > 1.
Page 25 B FRONT C.B FL901 D983 TP11 IC901 L951 C913 DECK–1 P HEAD D DECK C.B DECK–2 R/P/E HEAD SFR1 < DECK SECTION > 10. Tape Speed Adjustment (DECK 2) 14. REC/PB Frequency Response Adjustment (DECK 2) Settings : • Test tape : TTA–100 Settings : •...
Page 26: Mechanical Exploded View
MECHANICAL EXPLODED VIEW 1 / 1 AZG-1 ZD8RDM<EZ> AZG-1 YZD8RDM<K> P.C.B WIRE,BINDER FL901 HT-SINK P.C.B PLATE,EARTH MIC CHAS,MAIN ZZM-3 PR1NM<EZ> PLATE,EARTH MECH ZZM-3 YPR1NF<K> – 26 –...
Page 27: Mechanical Part List
32 88-906-251-110 FF-CABLE,6P 1.25 5 8A-NF8-207-010 SPR-T,EJECT 1 33 8A-NF8-205-010 HLDR,IC 6 8A-NF8-208-010 SPR-T,EJECT 2 34 88-913-301-110 FF-CABLE,13P-1.25 7 87-CE3-023-010 BADGE,AIWA 30N SILV 35 88-911-101-110 FF-CABLE,11P 1.25 36 87-NF4-216-010 HLDR,LOCK 1 8 8A-NF9-018-010 KNOB,RTRY JOG 9 8A-NF8-209-010 OIL-DMPR,120 37 86-NF9-224-010 SPR-C,LOCK...
Page 28: Tape Mechanism Exploded View
TAPE MECHANISM EXPLODED VIEW 1 / 1 TERMINAL, TERMINAL,LB1 IC, EW732 IC, EW732 P.C.B – 28 –...
Page 29 TAPE MECHANISM PART LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 8Z-ZM3-227-010 0E BELT,MAIN M3 8Z-ZM3-233-010 0E SPR-T,BRG M3 8Z-ZM3-235-010 0E BELT,MAIN L 84-ZM2-227-310 0E SPR-C,AZIMUTH 8Z-ZM1-235-010 0E PULLEY,MOT 87-A90-403-110 1B HEAD,RPH MS15R 87-045-347-010 1H MOT,SHU2L 70 87-A90-404-010 1B HEAD,EH LE15B 8Z-ZM1-232-010 0E GEAR,IDL FF/REW...
Page 30: 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 31: Accessories / Package List
SPEAKER PARTS LIST SX-NSZ20 (YBC9,YBY1,YBY2,YSL,YSC9,YSY1,YSY2), SX-NSZ22 (YSC9,YSY1,YSY2) REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NSK-001-010 PANEL,FR<EXCEPT YBC9,YBY1,YBY2> 2 8A-NSK-003-010 GRILLE,FRAME ASSY 3 8A-NSK-007-010 PROTECTOR,TWA 4 8A-NSK-602-010 SPKR,W 140<EXCEPT 22YSC9> 4 8A-NSJ-602-010 SPKR,W 130<22YSC9> 5 88-NS5-605-010 SPKR,T 60<EXCEPT 22YSC9> 5 8A-NSK-604-010 SPKR,TW 60<22YSC9>...
Page 32 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9820543 0251431 Printed in Singapore...

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Aiwa NSX-SZ20 Service Manual

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