Aiwa NSX-RV25 Service Manual
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Aiwa NSX-RV25 Service Manual

Aiwa NSX-RV25 Service Manual

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SERVICE MANUAL
CD STEREO SYSTEM
SYSTEM
CD CASSEIVER
NSX-RV25
CX-SNRV25
NSX-RV28
CX-SNRV28
This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
NSX-RV25, RV28 (RH) (S/MCode 09-024-360-0T1).
If requiring information about the CD mechanism, see Service Manual of BZG-2
(S/M Code No. 09-023-353-2NC).
NSX-RV25
NSX-RV28
BASIC TAPE MECHANISM : CMAT6Z2(1+1)ALPS
BASIC CD MECHANISM : BZG-2 MVSD5GNM
SPEAKER
SX-SNR20
SX-SNR20
S/M Code No. 09-024-360-0R1
HR(S)
HR(S)
REMOTE
SPEAKER
CONTROLLER
–
RC-CAS13(VS)
SX-SNR161

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Summary of Contents for Aiwa NSX-RV25

  • Page 1 NSX-RV28 CX-SNRV28 SX-SNR20 SX-SNR161 This Service Manual is the “Revision Publishing” and replaces “Simple Manual” NSX-RV25, RV28 (RH) (S/MCode 09-024-360-0T1). If requiring information about the CD mechanism, see Service Manual of BZG-2 (S/M Code No. 09-023-353-2NC). S/M Code No. 09-024-360-0R1...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS -1/1 SPECIFICATIONS ..............................3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING............... 4 NOTE ON BEFORE STARTING REPAIR......................5 ACCESSORIES PARTS LIST ..........................7 ELECTRICAL PARTS LIST ..........................8-23 TRANSISTOR ILLUSTRATION .......................... 24 SCHEMATIC DIAGRAM-1/6 (MAIN 1/2) ......................25 SCHEMATIC DIAGRAM-2/6 (MAIN 2/2 ) ......................

  • Page 3: Specifications

    SPECIFICATIONS -1/1 • Design and specifications are subject to change without notice...

  • Page 4: Protection Of Eyes From Laser Beam During Servicing

    PROTECTION OF EYES FROM LASER BEAM DURING SERVICING-1/1 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 5: Note On Before Starting Repair

    NOTE ON BEFORE STARTING REPAIR -1/2 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 6 NOTE ON BEFORE STARTING REPAIR -2/2 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 7: Accessories Parts List

    ACCESSORIES PARTS LIST -1/1 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.

  • Page 8: Electrical Parts List

    ELECTRICAL PARTS LIST -1/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 9 ELECTRICAL PARTS LIST -2/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 10 ELECTRICAL PARTS LIST -3/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 11 ELECTRICAL PARTS LIST -4/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 12 ELECTRICAL PARTS LIST -5/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.

  • Page 13: Electrical Parts List -6

    ELECTRICAL PARTS LIST -6/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 14 ELECTRICAL PARTS LIST -7/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.

  • Page 15: Electrical Parts List -8

    ELECTRICAL PARTS LIST -8/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 16 ELECTRICAL PARTS LIST -9/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 17 ELECTRICAL PARTS LIST -10/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 18 ELECTRICAL PARTS LIST -11/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 19 ELECTRICAL PARTS LIST -12/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 20 ELECTRICAL PARTS LIST -13/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 21 ELECTRICAL PARTS LIST -14/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 22 ELECTRICAL PARTS LIST -15/16 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 23 ELECTRICAL PARTS LIST -16/16 • 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. -23-...

  • Page 24: Transistor Illustration

    TRANSISTOR ILLUSTRATION-1/1 B C E B C E E C B E C B 2SA1980G 2SB1686 2SA1585SR 2SC3331(T/U) 2SD2642 2SC5343 2SA2057Q 2N5551C E C B S D G 2SC3052F 2SA1981Y 2SK2541 2SK3053 SBT5401 2SC5345SF 2SJ460 2SC5477 SRA2202S 2SD1306E 2SA1235F 2SC2620B 2SK360E 2SK2158 -24-...

  • Page 25: Schematic Diagram-1/6 (Main 1/2)

    SCHEMATIC DIAGRAM-1/6 (MAIN 1/2) TO VF C.B CN681 TO/FROM MAIN C.B (2/2) MAIN C.B (1/2) -4.7V 4.7V (-4.7V) (4.7V) 12.0V (12.0V) MARK RV25 MODEL RM28 MODEL R133 2.2k 4.7k Q111,112,115,116 Q113,114,127,128 R134 2.2k 4.7k -26.0V R135 1.2k 1.5k PRE AMP BASE BAIAS (-26.3V) Q117 120...

  • Page 26: Schematic Diagram-2/6 (Main 2/2)

    SCHEMATIC DIAGRAM-2/6 (MAIN 2/2) L904 FM TRACKING FM MIXER FM RF AMP FM OSC VT ADJ MIN C.B (2/2) Q835 L801 L802 Q836,837 FM IF AMP BAND SW FM DISTOTION ADJ AM IF ADJ 7.6V 7.6V 5.5V ANTENNA FM 75 SM LOOP L952,TC941 SWITCH...

  • Page 27: Wiring-1/5 (Main)

    WIRING-1/5 (MAIN) MAIN C.B TO VF C.B TO TAPE MECHANISM TO CD MECHANISM BZG2 MVSD5GNM CN681 CMAT6Z2(1+1)LPSCN681 LOOP J831 ANTENNA LOOP (LCH) (RCH) TO HP C.B WH230 (W101) SURROUND SPEAKERS RV28 MODEL -27-...

  • Page 28: Schematic Diagram-3/6 (Front)

    SCHEMATIC DIAGRAM-3/6 (FRONT) FRONT C.B -25.8V -25.8V 4.95V 3.57VAC -25.8V 11.2V 5.8V 5.0V 4.95V RESET 5.2V 5.0V Q301-303 VDD REG SYSTEM CONTROLLER 11.2V 12.0V SPEANA 12.0V KEY SCAN -26.0V POWER ON:5V POWER OFF:5V Q801,802 LEVEL METER STANDBY/ON L951 µ-CON OSC ADJ VOLUME ECO:12.88V POWER ON:...

  • Page 29: Wiring-2/5 (Front)

    WIRING-2/5 (FRONT) FRONT C.B DISC DIRECT PLAY S333 S332 S331 S330 S328 ENTER DISPLAY S321 S371 S322 POWER LED201 MULTI JOG S334 S335 S329 S323 S352 S348 DEMO/DIMMER STANDBY/ON STANDBY/ON FL201 CD OPEN / CLOSE DICS CHANGE TREBLE T-BASS ECHO KARAOKE DISPLAY B C A...

  • Page 30: Schematic Diagram-4/6(Pt)

    SCHEMATIC DIAGRAM-4/6 (PT) PT C.B RV25: 62.3V RV28: 63.0V RV25: 33.53V RV28: 31.8V RV15: 3.78V AC VOLTAGE RV28: 3.52V 220/230 240 V AC 220/230 240V 50/60 Hz -30-...

  • Page 31: Wiring-3/5 (Pt)

    WIRING-3/5 (PT) PT C.B W001 AC 220/230 240V 50/60 Hz RY001 PT002 PT001 S001 S001 AC VOLTAGE 220/230V 240V -31-...

  • Page 32: Schematic Diagram-5/6 (Vm)

    SCHEMATIC DIAGRAM-5/6 (VF) VF C.B VOCAL FADER SWITCH 4.7V 4.7V 4.7V -4.7V IC681 VOCAL FADER RV28 10-50 MODEL SIGNAL -32-...

  • Page 33: Schematic Diagram-6/6 (Hp)

    SCHEMATIC DIAGRAM-6/6 (HP) HP C.B PHONES SIGNAL -33-...

  • Page 34: Wiring-4/5 (Vm/Hp)

    WIRING-4/5 (VF/HP) VF C.B TO MAIN C.B CN603 HP C.B TO MAIN .CB WH101 J230 PHONES -34-...

  • Page 35: Wiring-5/5 (Deck)

    WIRING-5/5 (DECK) DECK C.B DECK 2 DECK 1 P HEAD E / RP HEAD CNA301 CNA302 TO MAIN C.B TO MAIN C.B CN301 CN302 -35-...

  • Page 36: Fl (Hau-11Mm42T)

    FL (HUA-13SS09T) -1/1 GRID ASSIGNMENT ANODE CONNECTION -36-...

  • Page 37: Electrical Adjustment

    ELECTRICAL ADJUSTMENT-1/6 ADJUSTMENT <TUNER/DECK> TC943 TC941 PARTS SIDE MAIN C.B L941 L802 L942 L953 L952 L907 SFR452 L904 SFR451 MAIN C.B PATTERN SIDE IC801 DECK C.B MOTOR -37-...
  • Page 38 ELECTRICAL ADJUSTMENT-2/6 1. Pressing any function key during PLAY stops the test mode. 2. After repeating the focus search for three times, then the gain is changed to the CR-RW gain value from the 4th focus search. 3. Do not keep pressing the FF button or the RWD button. If the FF button or the RWD button is kept pressed when the optical pickup stays in the innermost track or in the outermost track, the gear can be damaged because the sled motor keeps rotating.
  • Page 39 1) Set up the S.S.G. to AM, carrier 999 kHz, modulation degree 30%, source 1 kHz and output 40 to 65 dBuv. 2) Let the NSX-RV25/rv28 start the Tuning Search. Check that the Tuning Search stops at MW 999 kHz automatically.
  • Page 40 1) Set up the S.S.G. to FM, carrier 98 MHz, modulation 75 kHz, source 1 kHz and output 35 dBuv or less. 2) Let the NSX-RV25/RV28 start the Tuning Search. Check that the Tuning Search stops at FM 98 MHz automatically.
  • Page 41 ELECTRICAL ADJUSTMENT-5/6 14. Wow and Flutter Check (DECK1, DECK2) Conditions: The same conditions as item 12. 1) Connect a wow & flutter meter to HP OUT (Headphones output). 2) Set INDICATOR of the wow & flutter meter to JIS position. Set its mode to W RMS (WTD). 3) Insert the test tape (TTA-100) and play the center portion of the tape.
  • Page 42 ELECTRICAL ADJUSTMENT-6/6 ADJUSTMENT <FRONT> FRONT C.B PATTERN SIDE KSCAN FRONT C.B PARTS SIDE L951 FREQUENCY COUNTER 20. Clock Adjustment Requirement Measuring equipment: frequency counter CLOCK Test point: TP3 (KSCAN), (GND) Adjustment point: L951 1) While pressing and holding down the POWER button and UP button, insert the AC plug to outlet. 2) Adjust L951 so that the frequency counter indicates 72.743 ±...

  • Page 43: Cd Test Mode

    CD TEST MODE-1/1 1. How to Start the CD Test Mode While pressing the CD OPEN/CLOSE button, insert the AC plug to the power outlet. When the test mode is started, the message [TEST] is displayed. 2. How to Exit the CD Test Mode Press the POWER button, push other FUNCTION button or disconnect the AC plug.

  • Page 44: Ic Block Diagram

    IC BLOCK DIAGRAM-1/2 IC, LA1845 IC, LC72131D-N -44-...
  • Page 45 IC BLOCK DIAGRAM-2/2 IC, BD3881FV -45-...

  • Page 46: Ic Description

    IC DESCRIPTION -1/1 (µPD780228GF-091-3BA)-1/2 Pin No. Pin Name Description O-MOTOR DECK motor output. O-SOL1 DECK1 solenoid output. O-SOL2 DECK2 solenoid output. O-STBY LED STBY output for shift registor. O-MUTE System mute ON/OFF output. O-KSCAN Initial scan timing output. O-PLL_CE PLL Chip Enable output for LC72131 I-TM_BASE Time-Base signal input.
  • Page 47 IC DESCRIPTION -1/1 (µPD780228GF-091-3BA)-2/2 Pin No. Pin Name Description I-HOLD Power failure detected input “L” to stop clock and hold memory. I-CDSW CD mechanism switch A/D converter input. I-SPEANA_1 I-SPEANA_2 A/D input for spectrum analyzer display. I-SPEANA_3 I-KEY1 KEY Input (A/D). I-KEY2 I-TU_SIG Signal LEVEL A/D input for RDS.

  • Page 48: Mechanical Exploded View-1/1

    MECHANICAL EXPLODED VIEW-1/1 -48-...

  • Page 49: Mechanical Parts List

    88-908-301-110 FF-CABLE,8P 1.25 300MM X MC1030 88-911-101-110 FF-CABLE,11P 1.25 100MM O MC1031 8A-NFA-208-010 GUIDE,FL 100-25 ANFA O MC1032 8C-NF9-621-010 PWB,FRONT CNF-9 X MC1033 87-CE3-023-010 BADGE,AIWA 30N SILV X MC1034 8C-NH8-004-010 PANEL,TRAY VCD O MC1035 M8-BZG-29P-030 BZG-2 MVSD5GNM O MC1036 8A-NF8-206-010 HLDR,PWB M CX-SNRV25...
  • Page 50 MECHANICAL PARTS LIST -2/2 = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.

  • Page 51: Color Name Table

    COLOR NAME TABLE -1/1 Basic color symbol Color Basic color symbol Color Basic color symbol Color Black Cream Orange Green Gray Blue Transparent Blue Gold Pink Silver Titan Silver Brown Violet White Transparent White Yellow Transparent Yellow Metallic Blue Light Blue Transparent Green Dark Blue Transparent Orange...

  • Page 52: Tape Mechanism Exploded View (Cmat6Z(1+1)Alps)

    TAPE MECHANISM EXPLODED VIEW -1/1 (CMAT6Z2(1+1)APLS) -52-...

  • Page 53: Tape Mechanism Parts List (Cmat6Z(1+1)Alps)

    MECHANISM PARTS LIST -1/1 (CMAT6Z2(1+1)APLS) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.

  • Page 54: Speaker Disassembly Instructions

    SPEAKER DISASSEMBLY INSTRUCTIONS-1/1 Type.4 Type.1 TOOLS Insert a flat-bladed screwdriver into the position indicated by the Plastic head hammer arrows and remove the panel. Remove the screws of each speaker unit (-) flat head screwdriver andthen remove the speaker units. Cut chisel How to Remove the PANEL, FR Type.2...

  • Page 55: Speaker Parts List (Sx-Snr20)

    UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL SX-SNR20 YJS1N O SP1001 88-NSK-610-010 SPKR, CERAMIC ASSY O SP1002 8A-NSJ-006-010 BADGE,AIWA S35 O SP1003 8B-NSK-610-010 SPKR, T 60 L X SP1004 8C-NS9-003-010 GRILLE,FRAME O SP1005 8C-NS9-011-010 PANEL,DUCT O SP1006 8C-NS9-013-010 ADAPTOR,W O SP1007...

  • Page 56: Speaker Parts List (Sx-Sr160)

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL SX-SR160 Y1SN O SP2001 8A-NSJ-006-010 BADGE,AIWA S35 O SP2002 8C-NSL-001-010 PANEL,BA O SP2003 8C-NSL-002-010 CABI,REAR O SP2004 8C-NSL-006-010 CORD,5M RCA X SP2005...

  • Page 57: Others List

    OTHERS PARTS LIST -1/3 (CX-SNRV25, SNRV28) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 58 OTHERS PARTS LIST -2/3 (SX-SNR20) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 59 OTHERS PARTS LIST -3/3 (SX-SR160) = ! SAFTY PARTS = Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.
  • Page 60 2-11, IKENOHATA 1-CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 0251431...

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