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akira MC-VCM2 Service Manual

Compact disc player
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COMPACT DISC PLAYER
Service Manual

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Summary of Contents for akira MC-VCM2

  • Page 1 COMPACT DISC PLAYER Service Manual...
  • Page 2 - 3 - MODEL: MC-VCM2 Model No.: MC-VCM2 Version: 1.0...

  • Page 3: Table Of Contents

    - 4 - CONTENTS IMPORTANT SAFETY NOTES ......................5 SPECIFICATION............................. 7 ELECTRICAL SPECIFICATION......................8 EXPLODED VIEW..........................14 PART LIST ............................. 15 TROUBLESHOOTING GUIDE ......................17 Model No.: MC-VCM2 Version: 1.0...

  • Page 4: Important Safety Notes

    Uninsulated dangerous voltage, that may be of sufficient magnitude to constitute a risk of electric shock to persons is present within this product’s enclosure. ATTENTION The owner’s manual contains important operating and maintenance instructions. For your safety, it is necessary to refer to the manual. Model No.: MC-VCM2 Version: 1.0...
  • Page 5 Dripping warning: The product shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed on the product. Ventilation warning: The normal ventilation of the product shall not be impeded for intended use. Model No.: MC-VCM2 Version: 1.0...

  • Page 6: Specification

    Max power output 10 W Operation Temperature 1-40 C (32-104 F) (Main unit) (WxHxD) 218 x 290 x 120mm Dimensions (Speaker) (Each) (WxHxD)180 x 290 x 120mm Weight (Approximate) 6.25 kg (not including packing material) Model No.: MC-VCM2 Version: 1.0...

  • Page 7: Electrical Specification

    • AM 30% modulation with 400 HZ through loop antenna. b. Electrical equalizer switch set “FLAT” position, bass booster switch set to off position. c. Speaker output impedance 4 OHM (headphone output impedance 32 OHM). d. Reference output power: 500mW. Model No.: MC-VCM2 Version: 1.0...
  • Page 8 Audio response -6dB 98MHZ 20-4500 20-4000 Stereo separation 100HZ (pilot modulation 10%) 98MHZ 1000vU input 1KHZ 10KHZ Distortion (stereo 1000uV input) Stereo indication deviation sensitivity 98MHZ >2-<=5 90MHZ Auto scan sensitivity 98MHZ 106MHZ Stereo indication sensitivity 98MHZ Model No.: MC-VCM2 Version: 1.0...
  • Page 9 AGC -10dB (100mv/m input) 999KHZ Selectivity +/-9KHZ (EUR) 999KHZ Band width –6dB 999KHZ 4-12 Whistle modulation 2xIF 1/5/100mv/m input 3xIF Audio fidelity –6dB (5mv/m input) 999KHZ 20-2400 20-2200 603KHZ dB/m Auto scan sensitivity 999KHZ dB/m 1404KHZ dB/m Model No.: MC-VCM2 Version: 1.0...
  • Page 10 Signal to noise ratio (JIA A Filter) TCD-781 dB Channel unbalance TCD-781 dB Linearity error (40dB) SBC429 dB Max Vol TCD-781 mV <20 Residual hum & noise Min Vol TCD-781 mV <3 Minimum VOL hum & noise TCD-781 mV 1KHZ 0dB Model No.: MC-VCM2 Version: 1.0...
  • Page 11 ELECTRICAL EQUALIZER CONTROL (AUX 150mV input 1KHZ=0dB) Mode Unit Nominal Limit Flat 120HZ 0+/-3 10KHZ -0.2 -0.2+/-3 Classic 120HZ 8+/-3 10KHZ 4+/-3 120HZ -0.5 -0.5+/-3 10KHZ 0+/-3 Rock 120HZ 11.5 11.5+/-3 10KHZ 8+/-3 Jazz 120HZ 10+/-3 10KHZ 10+/-3 Model No.: MC-VCM2 Version: 1.0...
  • Page 12 Unit Nominal Limit 1800+/- Output level 1800 JIA A Filter 0.02 JIA A Filter Frequency response +/-3dB 20-20000 Ref: CD 1KHZ 0dB Channel separation JIA A Filter Channel unbalance Video output level TVD-581A Vp-p 1.0+/-0.2 Model No.: MC-VCM2 Version: 1.0...

  • Page 13: Exploded View

    - 14 - 4. EXPLODED VIEW Model no.: MC-VCM2 Version: 1.0...

  • Page 14: Part List

    BINDING S-SCREW, M3x16mm W-SCREW, W2.6x10mm METAL WASHER 1D3 0D18 THK 1 RUBBER FOOT S-SCREW, D3x10mm BLACK BATTERY DOOR BATT COVER SCREW 75 Ohm SOCKET COVER BINDING S-SCREW, D3x14 BLACK REAR CABINET SPEAKER JACK & ANT. JACK PCB Model No.: MC-VCM2 Version: 1.0...
  • Page 15 CD DECK COVER SPRING SHAFT CD DOOR GEAR 2 STEEL SHAFT CD DOOR GEAR 1 SPRING COMPARTMENT DUMPING GEAR BINDING S-SCREW, D2.6x8 CD BRACKET RIGHT BUTTON EARPHONE PCB SPIRAL SHEET W-SCREW W3x14 wd8 SPRING STOPPER SAFETY COVER Model No.: MC-VCM2 Version: 1.0...
  • Page 16 PART NAME INLAY PVC (RMT) PVC CAB FRONT (RMT) ABS REMOTE-KEY PAD REMOTE-KEY PAD REMOTE CONTROL PCB CONTACT BATT + (RMT) CONTACT BATT – (RMT) CONTACT BATT +/- (RMT) CAB REAR (RMT) DOOR BATT (RMT) Model No.: MC-VCM2 Version: 1.0...

  • Page 17: Troubleshooting Guide

    2. Insert the headphone plug into the phone jack firmly. Noise or weak in 1. Is there any facility interference? 1. Change the position of the unit. radio receiving 2. Is the FM antenna installed properly? 2. Re-install FM antenna. Model No.: MC-VCM2 Version: 1.0...