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NSX-R50 NSX-R51 SERVICE MANUAL COMPACT DISC BASIC TAPE MECHANISM : ZZM-3 PR3NM STEREO SYSTEM BASIC CD MECHANISM : BZG-5 ZD3GNM REMOTE SYSTEM SPEAKER CASSEIVER CONTROLLER NSX-R50 CX-NR50 SX-NR50 RC-CAS01 NSX-R51 CX-NR51 • If requiring information about the CD mechanism, see Service Manual of BZG-5, (S/M Code No.
SPECIFICATIONS MAIN UNIT CX-NR50 (K) / CX-NR51 (EZ) CD PLAYER TUNER Laser λ FM tuning range D/A converter FM usable sensitivity (IHF) Signal-to-noise ratio FM antenna terminal Harmonic distortion MW tuning range GENERAL µ MW usable sensitivity Power requirements LW tuning range Power consumption µ...
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING CAUTION This set employs laser. Therefore, be sure to follow carefully 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.
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.
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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.
TRANSISTOR ILLUSTRATION E C B G D S E C B B C E 2SB1370 2SC2240(GR/BL) 2SA1980G 2SK3053 CDA1585BC 2SA1981Y CSC4115BC KTC3198GR B C E S D G 2SA1235F 2SB1686 2SJ460 2SK360E KRA102S 2SC2620B 2SD2642 2SK2541 KRA107S 2SC3052F KRC102S-RTK 2SC5345S(O) KRC104S 2SD1306E RT1P141C...
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IC DESCRIPTION PD780228-061-3BA µ Pin Name Pin No. Description O-MOTOR DECK MOTOR ON/OFF output. O-SOL1 DECK1 solenoid ON/OFF output. O-SOL2 DECK2 solenoid ON/OFF output. O-LED_STB STB signal make clock and data effective. O-MUTE System MUTE ON/OFF output. O-KSCAN Switch SCAN timing output. O-BIAS Deck 2 BIAS ON/OFF output.
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Pin Name Description Pin No. 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. I-KEY 1 Key A/D input 1. I-KEY 2 Key A/D input 2. I-TU_SIG Tuner signal input.
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ADJUSTMENT (TUNER / DECK / FRONT) A MAIN C.B PARTS SIDE TC942 L941 L802 L951 L942 SFR451SFR452 L901 L902 A MAIN C.B PATTERN SIDE IC801 SFR452SFR451 R962 RPH/PH G DECK C.B SFR1 25 ...
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<TUNER Adjustment> 1. VT Adjustment and Check (LW) Requirements Measuring instrument: Digital multimeter Test point: VT, GND Adjustment point: L942 (1) Connect a digital multimeter to VT and GND. DIGITAL MULTIMETER (2) Set the unit function to LW, and adjust the receiving frequency at 144 kHz. (3) Adjust L942 so that the digital multimeter indicates 1.3 ±...
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<MW/LW Adjustment> Make sure that the following settings are done before adjustment. Preparation Measuring instruments: Standard Signal Generator (S.S.G.) / Loop antenna / Oscilloscope / Millivoltmeter / Dummy resistor (6Ω) (1) Connect the measuring instruments as shown in the diagram below. (2) Keep a distance of 60cm between the loop antenna of signal generator and the one connected to the unit.
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<FM Adjustment> Make sure that the following settings are done before adjustment. Preparation * Measuring instruments: Standard Signal Generator (S.S.G.) / Oscilloscope / Millivoltmeter / Dummy resistor (6Ω) (1) Connect the measuring instruments as shown in the diagram below. (2) Connect the output terminal of signal generator to the antenna input terminal of the unit. AC MILLIVOLTMETER OSCILLOSCOPE OUTPUT...
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<Deck Section> 12. Tape Speed Adjustment (DECK 2) Requirements Measuring instruments: Wow-flutter meter (frequency counter) Test tape: TTA-100 (3 kHz) Test point: HP OUT WOW&FLUTTER METER Adjustment point: SFR1 (1) Connect the HP OUT terminal of the unit to the wow-flutter meter. INPUT (2) Insert the test tape (TTA-100) to DECK 2.
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17. Playback Sensitivity Check (DECK 1, DECK 2) Requirements Measuring instrument: Millivoltmeter Test tape: TTA-200 (400 Hz) Test point: TP8 (Lch), TP9 (Rch) (1) Connect the CH1 of millivoltmeter to TP8 (Lch) and the CH2 to TP9 (Rch). (2) Insert the test tape (TTA-200) to DECK 1 to playback. (3) Check that the output level is ranged within 1000 mV ±...
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<Front Section> B FRONT C.B PATTERN SIDE CLOCK B FRONT C.B PARTS SIDE L951 FREQUENCY COUNTER 20. Clock Adjustment Requirement CLOCK Measuring instrument: Frequency counter Test point: CLOCK, GND (1) While pressing and holding down the POWER button and the UP button, insert the AC plug. (2) Adjust L951 so that the frequency counter indicates 84.804 ±...
CD TEST MODE 1. Starting CD Test Mode Insert the AC plug while pressing and holding down the CD OPEN/CLOSE button. When the test mode is activated, the display appears TEST. 2. Exiting CD Test Mode Press the POWER button or unplug the AC plug. 3.
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...