Muzak MCD-1000 Service Manual
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Muzak MCD-1000 Service Manual

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M C D
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S E R V I C E
M A N U A L

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Summary of Contents for Muzak MCD-1000

  • Page 1 M C D – 1 0 0 0 S E R V I C E M A N U A L...

  • Page 2: Table Of Contents

    To order parts call 800 331.3340. State that you are ordering MCD-1000 parts. Please specify color when ordering front panel components.

  • Page 3: Specifications

    s p e c i f i c a t i o n s POWER SOURCE 120 V AC, 50/60 Hz POWER CONSUMPTION 55 W at rated output OUTPUT POWER 25 W RMS at 4 ohms or 70 volts STEREO LINE OUTPUT 0 dBV (1 volt), +/- 3 dB @ 0dB on disc MONO LINE OUTPUT -6 dBV (0.5 volt), +/- 3 dB...

  • Page 4: Mechanism Replacement Procedure

    m e c h a n i s m r e p l a c e m e n t p r o c e d u r e Turn the door (1) upward and push the retained portion of the door downward to release the door from the retaining hinge of front panel.
  • Page 5 Insert a coin or similar object into the lower edge slot of the bezel (5) and lever the bezel forward with the coin to detach it. Remove two screws (6) securing the mechanism unit (7). Pull the mechanism unit out forward.
  • Page 6 Pull the connector (8) at the rear side of the mechanism unit and then detach the mechanism unit. Remove the screws (9) and metal brackets (10) on both sides. Turn the mechanism unit over, remove the screws (11) and the bottom plate (12). Reverse the above procedure to reassemble.

  • Page 7: Laser Diode Test Procedure

    l a s e r d i o d e t e s t p r o c e d u r e Measure the voltage across test points TP PICK and TP +5 of the MAIN PCB to obtain the laser diode current value in milliamps.
  • Page 8 Turn the connect PCB (15) over while taking care not to pull the DC motor wires (16). Remove two glued screws (17) on the captive guide shaft and one glued screw on the other side of the laser pickup. Remove the right shaft (18) and the two shaft holders (19).
  • Page 9 Remove the left shaft holder (19) in front of the rack gear of the pickup. Detach the pickup (20) from the shaft (18) while holding the shaft. Install the shaft (18) by putting it through the new pickup (20).
  • Page 10 Insert the FFC (21) with printed side up into the pickup connector while taking care not to bend the FFC. Install the pickup (20) while inserting the shaft (18) into the shaft holder (19) and then attaching the other shaft holder. NOTE: Apply one drop of light Sankol mineral oil to each shaft if available.

  • Page 11: Spindle Motor Replacement Procedure

    Tighten the three screws (17) to secure the pick- up and make sure the pickup moves smoothly. See above note regarding oil. IMPORTANT NOTE: After replacement of the laser pickup, it is necessary to remove the solder bridge on the FFC. CAREFULLY remove the solder bridge with a low wattage soldering iron to break the short circuit.
  • Page 12 Remove the FFC by loosening the connector tabs. Detach the spindle motor (24) and the plastic spacer (25). Lift the spacer with the motor (the magnetic clamp will give some resistance). NOTE: Do not take tray from metal cover or the magnetic clamp will fall out. Insert FFC (26) into new spindle motor with blue insulation toward the motor label.

  • Page 13: Mechanism Installation Procedure

    m e c h a n i s m i n s t a l l a t i o n p r o c e d u r e a f t e r r e p l a c e m e n t o f p i c k u p a n d s p i n d l e m o t o r Replace the connect PCB (15).
  • Page 14 Insert the keyed ribbon cable (8) into the mechanism connector (7). Install the mechanism into the main chassis with two screws (6). Mount the bezel (5).
  • Page 15 Eject the tray (2) with the eject stick (3). Attach the tray mask (4) and manually close the tray. Mount the door (1).

  • Page 16: Main Pcb Replacement Procedure

    main PCB replacement procedure Remove the three screws (2) securing the top cover (1). Remove the top cover while lifting up toward the rear panel as shown. Disconnect the three cables (3) horizontally connected (two on one side and one on the other) to the main PCB (4).
  • Page 17 Remove two screws (5) securing the main PCB with the PCB guide (6). Remove one screw (7) and one silver screw (8) securing the main PCB to the rear panel (9). Unplug the keyed connector (12) running to the mechanism PCB while lifting the main PCB upper front (11).

  • Page 18: Chassis Assembly Diagram

    chassis assembly diagram...

  • Page 19: Mechanism Assembly Diagram

    mechanism assembly diagram...
  • Page 20 block diagram...
  • Page 21 wiring diagram...
  • Page 22 connect PCB diagram...
  • Page 23 front PCB diagram...
  • Page 24 servo block diagram...
  • Page 26 amp block diagram...
  • Page 28 control block diagram...
  • Page 30 power amp PCB diagram...
  • Page 32 MCD -1000 complete spare parts list Description New P/N (Silver) Qty. Per Unit CHASSIS Chassis (see #62) 120-0711-00 Rubber Foot 004-3001-01 Fuseholder 013-0106-00 Output Transformer 013-4117-00 Power Transformer 013-4990-00 Fuse 250V 1.6A 013-5594-00 Card Edge Spacer 014-9007-00 Accessory PCB Unit 120-8935-01 6P Connector 806-0401-06...
  • Page 33 868-7100-01 Package Unit 120-6049-00 AC power cable 013-3079-00 Catalogue bag ASSEMBLY 121-7056-00 Small plastic bag for part 007-1401-00 Fuse 250V 1.6A 013-5594-00 MUZAK Warranty Card 017-0307-10 Catalogue bag 017-1403-00 Emergency Eject Pin 125-6574-01 Leaflet 127-2157-00 Barcode Label 127-0858-00 Serial Label...
  • Page 34 MCD -1000 complete spare parts list Description New P/N (Silver) Qty. Per Unit Reset IC 51957 QT2 502-1021-00 H-CMOS HC14 QT2 502-2049-00 H-CMOS HC32 QT2 502-2060-00 H-CMOS SNHC574 QT2 502-2064-00 H-CMOS HC245A QT2 502-2065-00 74LV138 QT2 502-2169-00 D/A Converter 503-1030-00 RF AMP AN8806 QT3 503-1040-00 OP AMP 2082M QT3...
  • Page 35 MCD -1000 complete spare parts list Description New P/N (Silver) Qty. Per Unit Jumper (2125) QT2 562-4001-00 R 1/10W 2R2J QT2 562-4010-00 R 1/10W 4R7J QT2 562-4018-00 R 1/10W 7R5J QT2 562-4023-00 R 1/10W 100J QT2 562-4026-00 R 1/10W 430J QT2 562-4041-00 R1/10W 750J QT2 562-4047-00...
  • Page 36 MCD -1000 complete spare parts list Description New P/N (Silver) Qty. Per Unit 21P FE Connector 804-1300-21 34P Flat Cable Assembly 820-9684-00 POWER AMP PCB Power AMP PCB Unit 120-7180-02 R 1/4W P5 101J T2 930-0121-85 R 1/4W P5 111J T2 930-0121-95 R 1/4W P5 102J T2 930-0124-25...
  • Page 37 MCD -1000 complete spare parts list Description New P/N (Silver) Qty. Per Unit R 1/4W P5 362J F 719-0068-00 R 1/4W P5 562J F 719-0170-00 Capacitor ARE2J 25V 471M 721-0213-00 Capacitor ARE2J 16V 222M 721-0214-00 Capacitor RJ4 10V 102M 721-0228-10 Capacitor RJ4 35V 332M 721-0231-00 Capacitor RJ4 35V 472M...
  • Page 38 MCD -1000 complete spare parts list Description New P/N (Silver) Qty. Per Unit Temperature Sensor LM-45 QT3 503-6001-00 Shot Key Barrier D QT3 523-3009-00 6P FFC Connector 533-6002-06 14P FFC Connector 533-6007-14 17P FFC Connector 533-6007-17 Layered Ceram. Capac. 50V 100PF QT2 552-5036-20 Layered Ceram.
  • Page 39 MCD -1000 complete spare parts list Description New P/N (Silver) Qty. Per Unit Pinion Gear 126-8634-01 Pan Head Small Screw M1.7X2 859-0438-00 Bind Small Screw M2.6X4 850-0001-24 Pick Up Shaft 125-6686-00 Pick Up Shaft 2 125-6694-00 Spindle Motor 125-8344-00 Damper H 126-8362-00 Shaft Holder 126-8570-03...
  • Page 40 MCD -1000 spare parts list with both colors Description Parts No. Description Parts No. MAIN CHASSIS UNIT 9P Harness(M) 820-9757-00 Main PCB Unit 120-7056-02 Wire w/Harnesses 909-7006-30 34P Flat Cable Assembly 820-9684-00 Earth Lead w/ Harness 909-5000-71 EPROM with software 706-7177-02 Fuse 250V 1.6A 013-5594-00...
  • Page 41 MCD -1000 spare parts list with both colors Description Parts No. Loading Gear 1 126-8615-00 Loading Gear 2 126-8616-00 Loading Gear 3 126-8617-00 Pulley Plate 126-8612-03 Chucking Pulley Assembly 121-5767-00 Tray Assembly 121-3336-05 Cushion 2 127-3317-00 Top Case 126-5527-00 Lever Assembly 121-5794-03 Connect PCB Unit 120-7728-01...
  • Page 42 3318 Lakemont Blvd. • Fort Mill, SC 29708 • 800 223.0686 • www.muzak.com...

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