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SERVICE MANUAL
COMPACT DISC STEREO
CASSETTE RECEIVER
SYSTEM
NSX-DR4
• If requiring information about the CD mechanism, see Service Manual
of AZG-1 (S/M Code No. 09-001-335-3NC).
NSX-DR4
BASIC TAPE MECHANISM : ZZM-2 YR1NFS
BASIC CD MECHANISM : AZG-1 ZA3RNDM
CD
CASSEIVER
CX-NDR4
S/M Code No. 09-008-428-8R5
REMOTE
SPEAKER
CONTROLLER
RC-ZAS02
SX-NBL11
EZ
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Summary of Contents for Aiwa NSX-DR4
- Page 1 NSX-DR4 SERVICE MANUAL COMPACT DISC STEREO BASIC TAPE MECHANISM : ZZM-2 YR1NFS CASSETTE RECEIVER BASIC CD MECHANISM : AZG-1 ZA3RNDM REMOTE SYSTEM SPEAKER CASSEIVER CONTROLLER NSX-DR4 RC-ZAS02 CX-NDR4 SX-NBL11 • If requiring information about the CD mechanism, see Service Manual of AZG-1 (S/M Code No.
- Page 2 SPECIFICATIONS <FM tuner section> <Compact disc player section> Tuning range 87.5 MHz to 108 MHz Laser Semiconductor laser (l =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 CAUTION This set employs laser. Therefore, be sure to follow carefully Use of controls or adjustments or performance of proce- the instructions below when servicing. dures other than those specified herein may result in hazardous radiation exposure.
- Page 4 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 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C106 87-010-186-080 CAP,CHIP 4700P C107 87-010-403-080 CAP, ELECT 3.3-50V 8A-NFA-615-010 C-IC,M38B57MCH-E236FP C108 87-010-403-080 CAP, ELECT 3.3-50V 87-A21-419-040 C-IC,NJM14558MD-TE2 C109 87-010-322-080 C-CAP, S 100P-50JCH 87-A21-443-040 C-IC,M62495AFP C110 87-010-322-080...
- Page 7 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C462 87-012-158-080 C-CAP,S 390P-50 CH C957 87-010-311-080 CAP, CHIP S 12P-50 JCH C470 87-018-127-080 CAP, TC U 470P-50 BK C958 87-010-197-080 CAP, CHIP S 0.01-25 KB C605 87-010-179-080 CAP,CHIP S B1200P C959 87-010-196-080...
- Page 8 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION C118 87-A10-189-040 CAP,E 220-10 S322 87-A90-164-080 SW,TACT SKQAB(N) C119 87-A10-189-040 CAP,E 220-10 S323 87-A90-164-080 SW,TACT SKQAB(N) C120 87-012-156-080 C-CAP,S 220P-50 CH S324 87-A90-164-080 SW,TACT SKQAB(N) C123 87-010-196-080 CHIP CAPACITOR,0.1-25 S325 87-A90-164-080 SW,TACT SKQAB(N)
- Page 9 TRANSISTOR ILLUSTRATION S D G E C B B C E CSC4115 2SJ460 2SB1342 KRA102 2SA1235 KTA1266 2SK2541 2SB1370 KRA107 2SC2714 KTC3198 2SD1933 KRC102 2SC3052 CMBT5401 KRC104 CMBT5551 E C B E B C 2SA1981 2SC5343 – –...
- Page 10 FL (10-BT-224GNK) GRID ASSIGNMENT AND ANODE CONNECTION GRID ASSIGNMENT – –...
- Page 11 ANODE CONNECTION – –...
- Page 12 WIRING - 1 (MAIN) - 12 -...
- Page 13 SCHEMATIC DIAGRAM – 1 (MAIN 1 / 2 : AMP SECTION) – 13 –...
- Page 14 SCHEMATIC DIAGRAM – 2 (MAIN 2 / 2 : TUNER SECTION) – 14 –...
- Page 15 WIRING - 2 (FRONT) - 15 -...
- Page 16 SCHEMATIC DIAGRAM – 3 (FRONT) – 16 –...
- Page 17 WIRING - 3 (PT) - 17 -...
- Page 18 SCHEMATIC DIAGRAM – 4 (PT) – 18 –...
- Page 19 WIRING - 4 (DECK)
- Page 20 IC BLOCK DIAGRAM – 20 –...
- Page 21 IC DESCRIPTION IC, M38B57MCH-E236FP Description Pin No. Pin Name I-SIG RDS signal level A/D input. (Not used) I-HOLD Hold voltage level A/D input. I-SW (CD) CD mecha SW A/D input. I-DISH CD turn-table position check A/D input. I-KEY2 KEY2 A/D input. I-KEY1 KEY1 A/D input.
- Page 22 Pin No. Pin Name Description O-DISH_R CD turn-table reverse turn output. O-DISH_F CD turn-table forward turn output. I-SUBQ Sub code-Q data input. O-CD_CE CD DSP chip enable output. I-WRQ CD WRQ input. O-CLK (CD) CD control clock output . O-DATA (CD) CD control data output.
- Page 23 ADJUSTMENT <TUNER / DECK> < TUNER SECTION > < DECK SECTION > 7. LW VT Adjustment 1. Clock frequency Check 9. Tape Speed Adjustment (DECK 1) 13. REC/PB Frequency Response Check (DECK 1) Settings : • Test point : TP1 (VT) Settings : •...
- Page 24 MECHANICAL EXPLODED VIEW 1 / 1 AZG-1 CABI, REAR P.C.B EZ W/O SPEC 31 30 P.C.B PLATE,EARTH ZZM-2 HLDR1 HLDR2 P.C.B CHAS, MAIN – –...
- Page 25 KEY,OPE 15 8A-NFZ-013-210 KEY,CD 16 8A-NFZ-009-010 KEY,FUN 17 8A-NFA-018-010 REFLECTOR,ECO 18 8A-NFZ-008-010 KEY,POWER 19 87-CE3-023-010 BADGE,AIWA 30N SILV 20 8A-NFZ-002-010 PANEL,TRAY H 21 8A-NFA-208-010 GUIDE,FL 100-25 ANFA 22 88-913-221-110 FF-CABLE, 13P 1.25 220MM 23 8A-NFA-062-010 PANEL,TOP V-2 24 88-NF9-213-010 HLDR,PWB MAIN...
- Page 26 TAPE MECHANISM EXPLODED VIEW 1 / 1 TERMINAL,LB1 TERMINAL,LB1 – –...
- Page 27 TAPE MECHANISM PARTS LIST 1 / 1 REF. NO. PART NO. KANRI DESCRIPTION REF. NO. PART NO. KANRI DESCRIPTION 1 8Z-ZM1-254-310 SPR-C,REEL R 36 8Z-ZM1-220-110 LEVER,REC SENSOR 2 8Z-ZM1-225-110 GEAR,REEL R 37 8Z-ZM1-249-210 SPR-T,FR 3 8Z-ZM1-253-210 SPR-C,AUTO SENSOR 38 8Z-ZM1-242-310 SPR-T,FF/REW 4 8Z-ZM1-217-110 LEVER,AUTO SENSOR...
- Page 28 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 1 Plastic head hammer unit and then remove the speaker units. 2 (() flat head screwdriver 3 Cut chisel How to Remove the PANEL, FR Type.2...
- Page 29 SPEAKER PARTS LIST SX-NBL11(YSC9,YSC,YSL) REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NSB-001-010 PANEL,FR 2 8A-NSB-003-010 GRILLE,FRAME ASSY 3 8Z-NSL-603-010 SPKR, W 120<YSC9> 3 8A-NSL-606-010 SPKR, W120<YSC,YSL> 4 87-NS7-611-010 CORD,SPKR ACCESSORIES / PACKAGE LIST REF. NO. PART NO. KANRI DESCRIPTION 1 8A-NFZ-927-010 IB,EZ(9L)E-DR4 2 8Z-NF9-701-210 RC UNIT,ZAS02...
- Page 30 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9630472 0251431 Printed in Singapore...
- Page 31 AZG-1 English SERVICE MANUAL CD MECHANISM BASIC CD MECHANISM : KSM-880CAB TYPE Z8RMDJM S/M Code No. 09-001-335-3N2...
- Page 32 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 33 How to Adjust the Rotating Phase of the Gear, Main Cam 1) Push down the hooking catch of the CHAS. MECH, and remove the TRAY. 2) Align the arrow mark of the Gear, Main Cam with the black round mark of the CHAS, MECHA as shown below. 3) Confirm that the Slide, Mech Cam is located in the right position, then insert the TRAY gently.
- Page 34 ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C111 87-010-312-080 C-CAP,S 15P-50 CH C112 87-010-154-080 CAP CHIP 10P 87-A20-446-010 C-IC,LA9241ML C113 87-010-178-080 CHIP CAP 1000P 87-A21-319-010 C-IC,LC78622NE C115 87-010-404-080 CAP, ELECT 4.7-50V 87-A20-445-010 IC,BA5936 C116...
- Page 35 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION MOTOR C.B PIN3 91-564-722-110 CONN,PIN 6P 91-572-085-110 LEAF SWITCH • Regarding connectors, they are not stocked as they are not the initial order items. The connectors are available after they are supplied from connector manufacturers upon the order is received. CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure...
- Page 36 WAVE FORM IC11 Pin = (RFSH) VOLT/DIV: 0.5V IC11 Pin ≥ (SPD) VOLT/DIV: 100mV TIME/DIV: 1µS TIME/DIV: 1mS 2.0±0.1 Vp-p VREF EYE PATTERN must be CLEAR and MAX IC11 Pin ^ (FD) VOLT/DIV: 100mV IC11 Pin ª (SLD) TIME/DIV: 1mS VOLT/DIV: 200mV TIME/DIV: 2S VREF...
- Page 37 BLOCK DIAGRAM...
- Page 38 WIRING...
- Page 39 SCHEMATIC DIAGRAM...
- Page 40 TEST MODE IC DESCRIPTION IC, LC78622NE 1. How to Activate CD Test Mode 2. How to Cancel CD Test Mode Insert the AC plug while pressing the function CD button. Either one of the following operations will cancel the CD test All FL display tubes will light up, and the test mode will be mode.
- Page 41 Pin No. Pin Name Description XVDD — Crystal oscillator power supply pin. XOUT Pin to which external 16.9344 MHz crystal oscillator is connected. XVSS — Crystal oscillator GND pin. Be sure to connect to 0V. SBSY Subcode block sync signal output pin. EFLG C1, C2, single and dual correction monitoring pin.
- Page 42 IC, LA9241ML Pin No. Pin Name Description Pin to which external pickup photo diode is connected. RF signal is created by adding FIN2 with the FIN1 pin signal. FE signal is created by subtracting from the FIN1 pin signal. FIN1 Pin to which external pickup photo diode is connected.
- Page 43 Pin No. Pin Name Description Pin from which TES signal is output to DSP. “High Frequency Level” is used to judge whether the main beam position is on top of bit or on top of mirror. SLOF Sled servo off control input pin. 39, 40 CV–, CV+ CLV error signal input pin from DSP.
- Page 44 MECHANICAL EXPLODED VIEW 1/1 P.C.B CHAS MECHA LED 901 P.C.B P.C.B CUSHION,CD880 CUSHION,CD880...
- Page 45 MECHANICAL PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 84-ZG1-225-010 BELT,SQ1.0-63.3 21 83-ZG3-604-010 RING,MAG 2 2 84-ZG1-673-010 F-CABLE,5P 1.25 210MM BLACK N 22 83-ZG3-213-010 LVR,SW 3 87-045-364-010 MOTOR(BCH3B14) 23 84-ZG1-266-010 LEVER,CAN 8 4 84-ZG1-267-010 PULLEY,LOAD MO 8 24 84-ZG1-205-210...
- Page 46 CD MECHANISM EXPLODED VIEW 1/1 P.C.B CD MECHANISM PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION 1 91-564-722-110 CONN,PIN 6P 2 91-572-085-110 LEAF SWITCH 3 9X-264-655-010 SL MOTORR ASSY 4 M8-ZZK-C90-070 KSM-880CAB 5 92-647-416-020 SPRING EXTENSION 6 92-647-595-020 SHUTTER B 7 92-647-732-010 NS SLIDE RACK 8 92-647-742-010...
- Page 47 REFERENCE NAME LIST ELECTRICAL SECTION MECHANICAL SECTION DESCRIPTION REFERENCE NAME DESCRIPTION REFERENCE NAME ANTENNAS ADHESHIVE SHEET ADHESHIVE CHIP AZIMUTH C-CAP CAP, CHIP BAR-ANT BAR-ANTENNA C-CAP TN CAP, CHIP TANTALUM BATTERY C-COIL COIL, CHIP BATT BATTERY C-DI DIODE, CHIP BEARING C-DIODE DIODE, CHIP BUTTON C-FET...
- Page 48 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 Printed in Singapore 0251431...