General Music Pianovelle GPS2500, Service Manual

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CODE : 270189
Index & Warnings
Soldering point.
Male connector.
Female connector.
M/F faston connector.
Test point.
Supply voltage.
Logic supply ground.
Analog supply ground.
Signal ground.
Chassis 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
PS 2500 Opening Instructions - KeyboardDisassembling
GPS 2500 Opening Instructions - Keyboard Disassembling
PS 2500 Cabinet Assembly 1
PS 2500 Stand & Controls Assembly 2
GPS 2500 Cabinet Assembly
Block Diagram
Power Amplifier & Supply, Phones, Cross Over and Control & Midi I/O Schematic Diagrams
Power Aamplifier. & Supply, Control Midi I/O, Keyboard Interface and Cross Over PCB Layouts
Slider, L & R Controls Panel and Controls Panel Interface Schematic Diagrams
Right & Left Control Board - Control Panel Interface PCB Layout
CPU & Sound Generator Board (Part 1/2)
CPU & Sound Generator Board (Parts 2/2)
Optional Kits Mounting Instructions
Spare Part List
L & R Contacts and Keyboard Interface Schematic Diagrams
Timing Diagram & Adjustment Table
Audio/Video Interface Schematic Diagram
CPU & Sound Generator and Audio/Video Interface PCB Layouts
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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 ( ) micro symbol of capacitance value is substituted by U. The (
µ 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.
All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V.
ATTENTION
Observe
pr
ecautions when handling
electrostatic sensitive devices
SERVICE MANUAL
Schematic Diagrams