General Music Pianovelle PS2500 Service Manual

SERVICE MANUAL

Schematic Diagrams

Power Aamplifier. & Supply, Control Midi I/O, Keyboard Interface and Cross Over PCB Layouts
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
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.
µ
The ( ) micro symbol of capacitance value is substituted by U. The (
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.
CODE : 270189
PS 2500 Opening Instructions - KeyboardDisassembling
GPS 2500 Opening Instructions - Keyboard Disassembling
Power Amplifier & Supply, Phones, Cross Over and Control & Midi I/O Schematic Diagrams
Slider, L & R Controls Panel and Controls Panel Interface Schematic Diagrams
Right & Left Control Board - Control Panel Interface PCB Layout
L & R Contacts and Keyboard Interface Schematic Diagrams
CPU & Sound Generator and Audio/Video Interface PCB Layouts
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.
Ω ) omega symbol of resistance value is substituted by E.
Soldering point. Supply voltage.
Male connector. Logic supply ground.
Female connector. Analog supply ground.
M/F faston connector. Signal ground.
Test point. Chassis ground.
Flag joined with one or more flags with the same signal name inscribed.
Index & Warnings
2
3
4
PS 2500 Cabinet Assembly 1
5
PS 2500 Stand & Controls Assembly 2
6
GPS 2500 Cabinet Assembly
7
Block Diagram
8
9
10
11
12
13
Timing Diagram & Adjustment Table
14
CPU & Sound Generator Board (Part 1/2)
15
CPU & Sound Generator Board (Parts 2/2)
16
Audio/Video Interface Schematic Diagram
17
18
Optional Kits Mounting Instructions
19
Spare Part List
ATTENTION
Observe ecautions when handling
electrostatic sensitive devices
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