Aiwa NSX-AV720 Service Manual
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Aiwa NSX-AV720 Service Manual

Aiwa NSX-AV720 Service Manual

Compact disc stereo cassette receiver
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Table of Contents

COMPACT DISC STEREO
CASSETTE RECEIVER
•
BASIC TAPE MECHANISM
•
BASIC CD MECHANISM
SYSTEM
NSX-AV720
• If requiring information about the CD mechanism, see Service Manual of
4ZG-1, S/M Code No. 09-983-249-3OT.
NSX-AV720
:
2ZM-3MK2 YPR4N
:
4ZG-1 Z4DSHNC
CD
CASSEIVER
SX–NAV704
CX-NAV720
.
S/M Code No
09–986–281–8FE
•
TYPE
REMOTE
SPEAKER
CONTROLLER
RC - 7AS09
SX-CR627
:
EZ,K

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Summary of Contents for Aiwa NSX-AV720

  • Page 1 NSX-AV720 COMPACT DISC STEREO CASSETTE RECEIVER • BASIC TAPE MECHANISM 2ZM-3MK2 YPR4N • TYPE EZ,K • BASIC CD MECHANISM 4ZG-1 Z4DSHNC REMOTE SYSTEM SPEAKER CASSEIVER CONTROLLER SX–NAV704 RC - 7AS09 NSX-AV720 CX-NAV720 SX-CR627 • If requiring information about the CD mechanism, see Service Manual of 4ZG-1, S/M Code No.

  • Page 2: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST - 1 NOTE: The characters in the suffix column indicate the part usage. AHEM ....XX........C....AKSE ....XX........D....AEZE ....XX........E....KANRI REF.NO PARTS NO. DESCRIPTION SUFFIX 87-NF5-210-010 GUIDE,LED ABC....88-NF6-203-010 GUIDE,LED JOG ABC....88-NF6-204-010 GUIDE,LED OPE AB....88-NF6-204-110 GUIDE,LED OPE ..C....
  • Page 3 ELECTRICAL MAIN PARTS LIST - 2 LED 425 87-070-281-080 LED,SLZ736A-25-S-T1 ABC....LED 423 87-070-281-080 LED,SLZ736A-25-S-T1 ABC....LED 428 87-A40-446-040 LED,SLP-7131F-81H-S-T1 P-GRN AB....LED 429 87-A40-446-040 LED,SLP-7131F-81H-S-T1 P-GRN AB....LED 428 87-A40-448-080 LED,SLR-56PTT31 GRN ..C....LED 429 87-A40-448-080 LED,SLR-56PTT31 GRN ..C....LED 438 87-070-197-080 LED,SLP7118C-51-S-T1...
  • Page 4 ELECTRICAL MAIN PARTS LIST - 3 87-010-196-080 CHIP CAPACITOR,0.1-25 ABC....87-010-401-040 CAP,E 1-50 SME ABC....87-A60-143-010 CONN,18P V FE ABC....87-A40-470-080 DIODE,1SS254 ABC....87-A40-470-080 DIODE,1SS254 ABC....87-008-372-080 FILTER, EMI BL OIRNI ABC....87-017-888-080 IC,NJM4558MD ABC....87-A60-284-010 JACK,3.5MO (MSC) AB....87-A60-284-010 JACK,3.5MO (MSC) AB....
  • Page 5 ELECTRICAL MAIN PARTS LIST - 4 87-A30-196-080 TR,2SC4115SRS ABCDE....89-213-702-010 TR,2SB1370 (1.8W) ABCDE....89-213-702-010 TR,2SB1370 (1.8W) ABCDE....87-026-609-080 TR,KTA1266GR ABCDE....87-026-609-080 TR,KTA1266GR ABCDE....87-A30-075-080 C-TR,2SA1235F ABCDE....87-A30-076-080 C-TR,2SC3052F ABCDE....87-A00-261-080 RES,M/F 0.56-1W J .B....87-045-389-010 RELAY,OSA-SS-212DM5 AB.DE....87-A90-464-010 RELAY, DG12D2-O(M) ..C....
  • Page 6 ELECTRICAL MAIN PARTS LIST - 5 87-A00-257-080 RES,M/F 0.15-1W J .B.D....87-A00-257-080 RES,M/F 0.15-1W J .B.D....87-A00-257-080 RES,M/F 0.15-1W J .B.D....87-A00-262-080 RES,M/F 0.15-2W J A.C.E....87-A00-262-080 RES,M/F 0.15-2W J A.C.E....87-A00-262-080 RES,M/F 0.15-2W J A.C.E....87-A00-257-080 RES,M/F 0.15-1W J .B.D....
  • Page 7 ELECTRICAL MAIN PARTS LIST - 6 87-010-193-080 CHIP CAPACITOR,0.033 ABCDE....87-010-193-080 CHIP CAPACITOR,0.033 ABCDE....87-010-380-080 CAP, ELECT 47-16V ABCDE....87-010-401-080 CAP, ELECT 1-50V ..CDE....87-010-401-080 CAP, ELECT 1-50V ..CDE....87-010-405-080 CAP, ELECT 10-50V ABCDE....87-010-405-080 CAP, ELECT 10-50V ABCDE....87-010-112-080 CAP, ELECT 100-16V ABCDE....
  • Page 8 ELECTRICAL MAIN PARTS LIST - 7 87-A20-438-010 IC,LA1837 AB....87-A20-913-010 IC,LA1837NL ..CDE....87-A50-266-010 COIL,FM DET-2N(TOK) ABCDE....87-A90-052-010 FLTR,CFMT-450A(TOK) ..C....87-A90-733-010 FLTR,PCFAZH-450 (TOK) AB.DE....87-005-847-080 COIL,2.2UH(CECS) ABCDE....87-A50-027-010 COIL,1 POLE MPX(TOK) ...DE....87-A50-027-010 COIL,1 POLE MPX(TOK) ...DE....87-030-354-010 VIB,CF BFU 450C ..C....
  • Page 9 ELECTRICAL MAIN PARTS LIST - 8 88-710-989-810 CAP,M 0.056-50 J TFL ABCDE....87-010-185-080 C-CAP,S 3900P-50 B ABCDE....87-010-401-080 CAP, ELECT 1-50V ABCDE....87-010-401-080 CAP, ELECT 1-50V ABCDE....87-010-405-080 CAP, ELECT 10-50V ABCDE....87-010-405-080 CAP, ELECT 10-50V ABCDE....87-010-405-080 CAP, ELECT 10-50V ABCDE....
  • Page 10 ELECTRICAL MAIN PARTS LIST - 1 (FRONT ASSY <8ZZ-6>) NOTE: The characters in the suffix column indicate the part usage. EZTS ....XX........A....KTST ....XX........B....KANRI REF.NO PARTS NO. DESCRIPTION SUFFIX 87-NF5-210-010 GUIDE,LED AB....88-NF6-203-010 GUIDE,LED JOG AB....88-NF6-204-010 GUIDE,LED OPE AB....
  • Page 11 ELECTRICAL MAIN PARTS LIST - 2 (FRONT ASSY <8ZZ-6>) 87-A20-083-010 IC,BA3835S AB....87-017-915-080 IC,BU4094BCF AB....87-017-915-080 IC,BU4094BCF AB....87-017-915-080 IC,BU4094BCF AB....87-070-289-040 IC,BU 2092F AB....LED 406 87-070-197-080 LED,SLP7118C-51-S-T1 AB....LED 409 87-070-197-080 LED,SLP7118C-51-S-T1 AB....LED 405 87-070-197-080 LED,SLP7118C-51-S-T1 AB....LED 404 87-070-197-080 LED,SLP7118C-51-S-T1...
  • Page 12 ELECTRICAL MAIN PARTS LIST - 3 (FRONT ASSY <8ZZ-6>) 87-A90-095-080 SW,TACT EVQ11G04M AB....87-A90-095-080 SW,TACT EVQ11G04M AB....87-A90-095-080 SW,TACT EVQ11G04M AB....87-A90-095-080 SW,TACT EVQ11G04M AB....87-A90-095-080 SW,TACT EVQ11G04M AB....87-A90-095-080 SW,TACT EVQ11G04M AB....87-A90-095-080 SW,TACT EVQ11G04M AB....87-A90-095-080 SW,TACT EVQ11G04M AB....
  • Page 13 ELECTRICAL MAIN PARTS LIST - 1 (PRO : 8ZA-4) REF. NO. PART NO. KANRI DESCRI P TI O N REF. NO. PART NO. KANRI DESCRI P TI O N C327 87-010-196-080 C-CAP,S 0.1-25 Z F C333 87-010-263-080 CAP,E 100-10 SME 87-A20-715-010 IC,M62439SP C400...
  • Page 14 ELECTRICAL MAIN PARTS LIST - 2 (PRO : 8ZA-4) REF. NO. PART NO. KANRI DESCRI P TI O N REF. NO. PART NO. KANRI DESCRI P TI O N L201 87-003-383-010 COIL,1UH K R245 87-A00-258-080 RES,M/F 0.22-1W J L202 87-003-383-010 COIL,1UH K R246 87-A00-258-080...

  • Page 15: Mechanical Parts List

    MECHANICAL PARTS LIST - 1 NOTE: The characters in the suffix column indicate the part usage. AHEM ....XX........C....AKSE ....XX........D....AEZE ....XX........E....KANRI REF.NO PARTS NO. DESCRIPTION SUFFIX 86-NF6-007-010 WINDOW,TOP A.CDE....86-NF6-101-010 WINDOW TOP UL .B....87-NB8-005-010 PANEL,LEFT A.CDE....87-NB8-051-010 PANEL,LEFT U .B....
  • Page 16 MECHANICAL PARTS LIST - 2 88-NFT-621-010 PT,8NF-26 U .B....88-NFT-622-010 PT,8NF-26 HR ..C....88-NFT-623-010 PT,8NF-26 EZ ..E....88-NFT-624-010 PT,8NF-26 LH A....88-NFT-626-010 PT,8NF-26 KGV ...D....87-050-034-010 AC CORD ASSY,E ..E....87-050-053-010 AC CORD ASSY,U-2 .B....87-050-079-010 AC-CORD ASSY,E A.C....87-A80-023-010 AC CORD,ASSY K 3P W ....
  • Page 17 MECHANICAL PARTS LIST - 1 (FRONT ASSY <8ZZ-6>) NOTE: The characters in the suffix column indicate the part usage. EZTS ....XX........A....KTST ....XX........B....KANRI REF.NO PARTS NO. DESCRIPTION SUFFIX 88-NF6-003-010 BOX,CASS 1 AB....88-NF6-004-010 BOX,CASS 2 AB....88-NF6-007-010 PANEL,CD AB....88-NF6-013-010 WINDOW,CASS 1 AB....
  • Page 18 TAPE MECHANISM PART LIST - 1 REF. NO. PART NO. KANRI DESCRI P TI O N REF. NO. PART NO. KANRI DESCRI P TI O N 1 86-ZM3-215-010 CHAS ASSY,RS 41 82-ZM1-216-319 GEAR,REEL 2 86-ZM3-202-010 BASE,HEAD S 42 86-ZM3-213-010 S-SCREW,HLDR,MOT 3 3 86-ZM3-205-010 SPR-C,RPH S 43 82-ZM1-225-219...

  • Page 19: Accessories / Package List

    ACCESSORIES / PACKAGE LIST - 1 NOTE: The characters in the suffix column indicate the part usage. AHEM ....XX........C....AKSE ....XX........D....AEZE ....XX........E....KANRI REF.NO PARTS NO. DESCRIPTION SUFFIX 87-B50-043-010 LIST,FACILITY-A5 ..CDE....88-NFT-901-010 IB,H(ECA)M ..C....88-NFT-902-010 IB,LH(ESP)M A....88-NFT-903-010 IB,U(ESF)M .B....
  • Page 20 SCHEMATIC DIAGRAM _ 1 (EZ : MAIN)
  • Page 21 SCHEMATIC DIAGRAM _ 2 (K : MAIN)
  • Page 22 SCHEMATIC DIAGRAM _ 3 (EZ : TUNER)
  • Page 23 SCHEMATIC DIAGRAM _ 4 (K : TUNER)
  • Page 24 SCHEMATIC DIAGRAM _ 5 (FRONT)
  • Page 25 SCHEMATIC DIAGRAM _ 6 (PRO)
  • Page 26 SCHEMATIC DIAGRAM _ 7 (PT)
  • Page 27 9301978,750038 Tokyo Japan Printed in Singapore...
  • Page 28 4ZG-1 CD MECHANISM • • TYPE English BASIC CD MECHANISM 3ZG-2 E1 BASIC NAME DERIVATION NAME 4ZG-1 This Service Manual has various derivation.Derivation name is indicated by the Service Manual for each model. S/M Code No 09-985-249-80T...

  • Page 29: 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 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 30 This is the SERVICE MANUAL for the BASIC CD MECHANISM of BASIC NAME: 4ZG-1. This BASIC NAME includes the following models as shown under the SUFFIX name: DERIVATION NAME. Please use this manual with the separate SERVICE MANUAL for DERIVATION NAME. BASIC CD MECHANISM: 4ZG-1 VOS1DSH...
  • Page 31 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 32 ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C135 87-010-196-080 CHIP CAPACITOR,0.1-25 C136 87-010-196-080 CHIP CAPACITOR,0.1-25 87-A20-547-010 C-IC,CXA1992AR C137 87-010-196-080 CHIP CAPACITOR,0.1-25 87-A20-919-040 C-IC,BA5915FP C138 87-010-182-080 C-CAP,S 2200P-50 B 87-A20-917-010 C-IC,CXD2540Q-1/2 C139 87-010-197-080 CAP, CHIP 0.01 DM 84-ZG1-697-010...
  • Page 33 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C527 87-010-197-080 CAP, CHIP 0.01 DM L506 87-005-204-080 COIL,47UH C528 87-010-197-080 CAP, CHIP 0.01 DM L507 87-005-204-080 COIL,47UH C529 87-010-197-080 CAP, CHIP 0.01 DM L508 87-005-817-080 C-COIL, 33UH J FLC32 C530 87-010-197-080 CAP, CHIP 0.01 DM...

  • Page 34: Transistor Illustration

    • 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 Resistor Code Value of resistor...
  • Page 35 BLOCK DIAGRAM...
  • Page 36 WIRING-1...
  • Page 37 WIRING-2...
  • Page 38 WIRING-3...
  • Page 39 SCHEMATIC DIAGRAM-1...
  • Page 40 SCHEMATIC DIAGRAM-2 C560 0.01...
  • Page 41 WAVE FORM IC101 Pin (RF-O) VOLT/DIV: 200mV IC504 Pin UCAS VOLT/DIV: 1V TIME/DIV: 0.5µS (Pin LCAS) TIME/DIV: 2µS 1.2±0.1Vp-p EYE PATTERN must be CLEAR and MAX IC501 Pin DA XCK VOLT/DIV: 1V 16.93MHz TIME/DIV: 20nS IC501 Pin VSync VOLT/DIV: 1V NTSC TIME/DIV: 5mS IC501 Pin...
  • Page 42 IC DESCRIPTION IC, CXA1992AR Pin No. Pin Name Description Output terminal for focus error amplifier. Internally connected to window comparator input for bias condition. Input terminal for focus error. FDFCT Capacitor connection terminal for time constant used when there is defect. This pin is connected to GND via capacitor when high frequency gain of the focus servo is attenuated.
  • Page 43 Pin No. Pin Name Description RF_I Input terminal by capacity combination of RF summing amplifier. RF_O Output terminal of RF summing amplifier. Checkpoint of Eye pattern. Anti-reverse input terminal for RF summing amplifier. RF_M The gain of RF amplifier is decided by the connection resistance between RF_M and RFO terminals.
  • Page 44 IC, CXD2540Q Pin No. Pin Name Description Focus OK input. Used for SENS output and the servo auto sequencer. Spindle motor output filter switching output. Spindle motor on/off control output. Spindle motor servo control. High, when sampled value of GFS at 460Hz is high. LOCK Low, when sampled value of GFS at 460Hz is low by 8 times successively.
  • Page 45 Pin No. Pin Name Description DA11 DA11 output when PSSL=1. GTOP output when PSSL=0. DA10 DA10 output when PSSL=1. XUGF output when PSSL=0. DA09 DA09 output when PSSL=1. XPLCK output when PSSL=0. DA08 DA08 output when PSSL=1. GFS output when PSSL=0. DA07 DA07 output when PSSL=1.
  • Page 46 Pin No. Pin Name Description DATO Serial data output to SSP. XLTO Serial data latch output to SSP. Latched at the falling edge. CLKO Serial data transfer clock output to SSP. Mirror signal input. Used when the number of tracks is 128 or more for the 2N-track MIRR jump and M track move of the auto sequencer.
  • Page 47 IC, CL680 Pin No. Pin Name Description — No connection. — GND. CD BCK Bit clock input from CD DSP. CD DATA Data input from CD DSP. CD LRCK LRCK input from CD DSP. CD C2PO C2 pointer input from CD DSP. —...
  • Page 48 Pin No. Pin Name Description Y OUT Video signal “Y” OUT. AVDD DAC — Analog power supply (DAC) 3.3V. AGND DAC — Analog ground. R REF Reference resistor input. V REF Voltage reference input. AVDD DAC — Analog power supply (DAC) : 3.3V. C OUT Video signal “C”...
  • Page 49 Pin No. Pin Name Description __________ HINT Micon interface. (Host interrupt) CDG SCK CD-G serial clock input. — Ground. Micon interface. (Host clock) VDD3 — Power supply 3.3V. HD IN Micon interface. (Host data in) VDD3 — Power supply 3.3V. HSEL Micon interface.
  • Page 50 IC, LC74781M Pin No. Pin Name Description VSS1 — GND connection terminal. (Digital ground terminal). Xtal IN External X’tal and capacitor for internal sync generator, or the external clock are Xtal OUT connected to this terminal. (2fsc or 4fsc). Either the external clock input mode or the X’tal generator mode is selected by this CTRL1 selector terminal.
  • Page 51 Pin No. Pin Name Description ______________ Controls whether or not to input the VSYNC signal to the SEPIN input. L: to input the CTRL3 ______________ ______________ VSYNC signal. H: not to input the VSYNC signal. ________ System reset input terminal. Pull-up resistor is built-in. (Hysteresis input). VDD1 —...
  • Page 52 IC, µPD78016FGC Pin No. Pin Name Description RBPLS RADIAL BALANCE PLUS. AMUTE AUDIO ANALOG MUTE (H=MUTE ON). GFS. XVCDMD AUDIO/VIDEO CD MODE (L=VCD=SPINDLE GAIN UP). DOUT MUTE CONT. EMPH EMPHASIS. SQSO SQDATA FROM CD. SQCK SQCLK TO CD. — GND. SWNT SW TV OUT MODE (L=NTSC).
  • Page 53 Pin No. Pin Name Description 8.0MHz CERALOCK. — GND. — Nou used. 5.0VDD. AVSS — GND. XMPGRST MPEG BLOCK IC RESET. HSEL ADDRESS/DATA SEL TO CL680. INLSW INSIDE LIMIT SW . — Nou used. OSDXCS OSD CHIP SELECT. ABSEL CXA1992A/B SELECT (L=CXA1992A). CLVSEL CLV MODE SELECT (H=CLV-N).
  • Page 54 IC, SM5878M Pin No. Pin Name Description MODE = H: Soft mute ON/OFF terminal. (Mute at H). MUTE MODE = L: Attenuator level DOWN/UP terminal. (DOWN at H). DEEM De-emphasis ON/OFF terminal. (De-emphasis ON at H). Oscillator clock output. (16.9344 MHz). DVSS —...
  • Page 55 IC BLOCK DIAGRAM IC, BA5915FP 6.65K 6.65K 6.65K 6.65K MUTE T.S.D: Thermal shut-down Resistors are in units of Ω. IC, M5291FP Switch collector Driver Peak currect Switch emitter detection External capacitance Power supply 1.17V for oscillation REF. VOL Ground Comparator input IC, LB1644...

  • Page 56: Test Mode

    TEST MODE 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 57: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 1/1 P.C.B CHAS,MECHA P.C.B HLDR,MECHA P.C.B 3ZG-2 E1 CUSH CD A...
  • Page 58 MECHANICAL PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 84-ZG1-239-210 PULLY,WORM N 21 84-ZG1-207-010 PULLEY,RELAY 2 84-ZG1-267-010 PULLEY,LOAD MO 8 22 84-ZG1-221-010 GEAR,MAIN TT 3 81-ZG1-239-010 S-SCREW,TT 23 84-ZG1-238-010 GEAR,WORM N 4 81-ZG1-291-110 GEAR,TRAY RELAY NO3 24 84-ZG1-224-010 LEVER,TT...
  • Page 59 CD MECHANISM EXPLODED VIEW 1/1 (3ZG-2 E1) P.C.B CD MECHANISM PARTS LIST 1/1 (3ZG-2 E1) REF. NO PART NO. KANRI DESCRIPTION 1 83-ZG2-243-110 CHAS ASSY,SHT 2 83-ZG2-235-010 GEAR,A3 3 83-ZG2-205-210 GEAR,B 4 83-ZG2-236-010 GEAR MOTOR 3 5 83-ZG2-240-010 SHAFT,SLIDE 3 6 87-A90-836-010 PICKUP,KSS-213F 8 83-ZG2-233-010...
  • Page 60 USE MODEL LIST CX-NAK572 CX-NK270 CX-NK290 CX-NK370 CX-NK570 CX-NK765 CX-NK770 CX-NK970 DX-SNKH100...

  • Page 61: Mechanical Section

    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...

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