Gemini PMX-80 Service Manual

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SERVICE MANUAL

PMX-80

Stereo Preamp Mixer

CONTENT'S:

Connections & Operations:.......................................................Page 2-4

Specifications:..............................................................................Page 5

Parts Lists:.................................................................................Page 6-8

PCBs:..........................................................................................Page 7-9

Schematics:.................................................................................Page 10

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 1 SERVICE MANUAL PMX-80 Stereo Preamp Mixer CONTENT’S: Connections & Operations:............Page 2-4 Specifications:................Page 5 Parts Lists:.................Page 6-8 PCBs:..................Page 7-9 Schematics:.................Page 10 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
Just purchase one of these crossfader units from Mid (Channels 1 - 2)............+ 12dB/-32 dB your Gemini dealer and follow these instructions: High (Channels 1 - 2).............+ 12dB/-32 dB 1. Unscrew the outside FADER PLATE SCREWS (B). Do not Gain (Channels 1 - 2)............0 to -20dB...
Page 5: Parts Lists
Parts Lists Cabinet Parts and Packing Item # Description Part # PANEL CONTROL 002-223 PANEL REAR 034-020 BOTTOM COVER 032-027 BRACKET VR (SUB CHASSIS) 021-776 HOLDER FADER 022-367 KNOB SWING (LONG) 023-674 KNOB PUSH (SMALL) 002-531 KNOB SLIDE (BIG) 002-704 KNOB ROTARY (B TYPE) 003-110 INLAY KNOB (BLACK)
Page 6 Parts Lists - PCB1 Input Output Item # Description Part # Designators IC1, IC2, IC3 INTEGRATED CIRCUIT NJM2068LD 074-145 INTEGRATED CIRCUIT NJM7912FA 074-114 INTEGRATED CIRCUIT NJM7812FA 074-107 Electrical Parts Item # Designators Description Part # D3, D4 RECTIFIER DIODE 1N4002 (1N4003,1N4004) 079-027 D1, D2 ZENER DIODE 1/2W 12V...
Page 9 Schematic Page 8...