General Music SK76 User Manual

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CODE : 270148
Index & Warnings
Soldering point.
Male connector.
Female connector.
M/F faston connector.
Test point.
Supply voltage.
Logic supply ground.
Analog supply ground.
Chassis ground.
Earth ground.
Flag joined with one or more flags with the same signal name inscribed.
GENERALMUSIC S.p.A. Sales Division: 47048 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12 - tel. 0541/959511 - tlx 550555 GMUSIC I - fax 0541/957404
Opening & Keyboard Disassembling Instructions
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Power Amp. & Supply, Keyboard Interface, A/V Interface and A/V & Harmonizer Pcb Layouts
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SK76 - Keyboard Interface & 76 Note L/R Contacts Schematics
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Audio/Video & Harmonizer Schematic
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Controls Panel, Pitch/Modulation & Dc-Ac Converter Schematics
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SK88 - Keyboard Interface & 88 Note L/R Contacts Schematics
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Cpu & Sound Generator Schematic (Part 1/2)
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Notice
Service must be carried out by qualified personnel only.Any tampering carried out by unqualified personnel during the guarantee
period will forfeit the right to guarantee.
For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again.
To improve the device's specifications, the schematic diagrams may be subject to change without prior notice.
Schematic Notes
All components marked by this symbol have special safety characteristics, when replacing any of these components use only
manufacturer's specified parts.
The (µ) micro symbol of capacitance value is substituted by U. The (Ω) omega symbol of resistance value is substituted by E.
The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified. All resistors are 1/8W unless otherwise specified.
ATTENTION
Observe precautions when handling
electrostatic sensitive devices
SERVICE MANUAL
Schematic Diagrams
Cpu & Sound Generator Pcb Layout
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Timing Table
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Optional Accessories Mounting Instructions
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Keyboard and Controls Panel Interfaces Pcb Layout & Controls Panel Reverse Pcb Layout
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Cpu & Sound Generator Schematic (Part 2/2)
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Spare Part List
Audio/Video Interface Schematic
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SK76 - Assembly & Wiring Connections
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SK88 - Assembly & Wiring Connections
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Power Amp. & Supply, Midi & Controls I/O and Analog I/O Schematics, Adjustment Table
Block Diagram, Controls & Midi I/O and Analog I/O Pcb Layouts
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General Music SK76 Specifications

General

Brand	General Music
Model	SK76
Category	Electronic Keyboard
Language	English