Gemini BPM-500 Service Manual
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Gemini BPM-500 Service Manual

Stereo preamp mixer
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See also: Operating Manual

SERVICE MANUAL

BPM-500
Stereo Preamp Mixer
CONTENT'S:
Connections & Operations:.......................................................Page 2-5
Specifications:..............................................................................Page 5
Parts Lists:.................................................................................Page 6-8
PCBs:........................................................................................Page 9-11
Schematics..................................................................................Page 12
Gemini Sound Products Corp.
120 Clover Place P.O. Box 6928
Edison, NJ 08818-6928
732-738-9003 (Phone) • 732-738-9006 (Fax)
Page 1

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Summary of Contents for Gemini BPM-500

  • Page 1: Service Manual

    SERVICE MANUAL BPM-500 Stereo Preamp Mixer CONTENT’S: Connections & Operations:............Page 2-5 Specifications:................Page 5 Parts Lists:.................Page 6-8 PCBs:..................Page 9-11 Schematics..................Page 12 Gemini Sound Products Corp. 120 Clover Place P.O. Box 6928 Edison, NJ 08818-6928 732-738-9003 (Phone) • 732-738-9006 (Fax) Page 1...
  • Page 2 Page 2...
  • Page 3 Page 3...
  • Page 4 The CHANNEL SLIDE (13) controls the input level of this channel. 3. The BPM-500 is supplied with 4 sets of amp output jacks. The BALANCED OUTPUT (45) jacks are used to connect to your main 3. CHANNEL 2: The GAIN (8), HIGH (9), MID (10), and LOW (11) amplifier using standard XLR cables.

  • Page 5: Specifications

    7. BPM DISPLAY: There are BPM DISPLAYS (24, 27) for the two 13. DISPLAY: The peak hold, dual function DISPLAY (31) indicates either channels assigned to each side of the CROSSFADER (26). They the MASTER (45, 46) output left and right levels OR the the selected update approximately every beat and digitally display the Beats Per cue and program (premaster output) levels.
  • Page 6 Parts Lists Cabinet Parts and Packing Item # Description Part # PANEL CONTROL 002-199 BRACKET VR 021-760 COVER BOTTOM 021-335A PANEL REAR 021-991 HOLDER X-FADER 022-360 PROTECTOR PLATE FOR 115/230V SWITCH 022-305 SWING LEVEL (LONG) 023-674 PCB SPACER SUPPORT 047-474 PCB SPACER SUPPORT 047-468 KNOB PUSH (SMALL)
  • Page 7 Parts Lists - PCB1 Input/Output Description Part # Item # Designators INTEGRATED CIRCUIT NJM4556L 074-113 IC1-6 INTEGRATED CIRCUIT NJM2068LD 074-145 INTEGRATED CIRCUIT NJM7812FA 074-107 IC10 INTEGRATED CIRCUIT NJM7805FA 074-074 Transistors Item # Designators Description Part # Q1-5, Q7 TRANSISTOR 2SC2878 076-095 TRANSISTOR 2SA1048 (2SA1317) 076-104...

  • Page 8: Parts Lists

    Parts Lists - PCB3 Main Description Part # Item # Designators IC2-14 INTEGRATED CIRCUIT NJM4558LD 074-104 INTEGRATED CIRCUIT NJM2068LD 074-145 IC15, IC16 INTEGRATED CIRCUIT LB1412 074-111 Electrical Parts Item # Designators Description Part # D4, D5, D7, D9 SILICON DIODE 1N4148 079-003 D1-3, D6, D8, LIGHT EMITTING DIODE (RED) 3.15f...

  • Page 9: Pcbs

    PCB3 - Main Page 9...
  • Page 10 PCB2 - Phono Page 10...

  • Page 11: Pcbs

    PCB1 - Input/Output Page 11...

  • Page 12: Schematics

    Schematic VR9A 50KEX2 10/16 I/O PCB 10/16 +12V VR6A VR7A LOOP 50KEX2 50KAX2 R71 33 10/16 47/16 -12V 10/16 VR8A 50KEX2 22/16 SW1C IC1A 22/16 TALKOVER 22/16 2068LD 10/16 R125 IC4A 10/16 IC5A 10/16 -12V 4558LD 4558LD R170 -12V 100K 100K R101 22/16...

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