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Manual
SERVICE MANUAL
BPM-1000
Stereo Preamp Mixer
CONTENT'S:
Connections & Operations:.......................................................Page 2-5
Specifications:..............................................................................Page 5
Parts Lists:.................................................................................Page 5-7
PCBs:........................................................................................Page 8-12
Schematics.............................................................................Page 13-14
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-1000
- Page 1 SERVICE MANUAL BPM-1000 Stereo Preamp Mixer CONTENT’S: Connections & Operations:............Page 2-5 Specifications:................Page 5 Parts Lists:.................Page 5-7 PCBs:..................Page 8-12 Schematics................Page 13-14 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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Page 4: Operation
OFF LED (30) will 3. The BPM-1000 is supplied with 2 sets of amp output jacks. The BALANCED light. When the OFF (32) button is pressed, the right side of the crossfader will be OUTPUT AMP (56) jacks are used to connect to your main amplifier using inactive and the OFF LED (33) will light. -
Page 5: Specifications
Parts Lists MIC 1 and MIC 2 are on, the MIC INDICATOR (8) will glow, but talkover is off. When the MIC/TALKOVER (9) switch is in the right position, MIC 1 and MIC 2 and talkover will be on and the volume of all sources except the Mic inputs are lowered by 16 dB. - Page 6 Parts Lists - PCB1 Input/Output Description Part # Item # Designators IC4, IC5 INTEGRATED CIRCUIT NJM4558L 074-104 IC1, IC2, IC3 INTEGRATED CIRCUIT NJM2068LD 074-145 Transistors Item # Designators Description Part # TRANSISTOR 2SA1048 (2SA1317) 076-104 Q2-5 TRANSISTOR 2SC2878 076-095 Electrical Parts Item # Designators Description...
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Page 7: Pcbs
Parts Lists - PCB3 XLR Description Part # Item # Designators INTEGRATED CIRCUIT NJM4558L 074-104 IC1, IC2 INTEGRATED CIRCUIT NJM2068LD 074-145 INTEGRATED CIRCUIT NJM7812FA 074-107 INTEGRATED CIRCUIT NJM7912FA 074-114 Transistors Item # Designators Description Part # Q1, Q2 TRANSISTOR 2SC2878 076-095 Electrical Parts Item #... - Page 9 PCB2 - Meter Page 8...
- Page 10 PCB1 - Input/Output Page 7...
- Page 11 PCB3 - XLR Page 9...
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Page 12: Schematics
Schematic IN/OUT PCB MAIN PCB VR10A 50KEx2 SW1B VR8A 100K 100/16 -12V 50KEx2 47/16 IC1A SW1A VR9A 2068 50KEx2 4.7/35 10/16 IC5B 22/16 Right +12V 47/16 22/16 4558S VR11B 10KAx2 VR7A 50KAx2 VR10B TO X1 METER -12V 50KEx2 100K 100/16 22/16 IC1B IC4A... - Page 13 Meter Schematic Page 11...
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