1
Index
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
GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12
Phone +39(0)541/959511 - Fax +39(0)541/957404 - Internet: www.generalmusic.com
Repair Instructions & Timing Table.
Opening & Keyboard Disassembling Instructions.
2
3
Block Diagram, Mains Filter Board Schematics.
5
5
CPU & Sound Generator Board Schematic.
6
Keyboard Interface, In/Out, Controls Panel Board Schematics.
7
Power Supply& Amplifier Board, Mains Filter, In/Out Pcb Layouts.
7
8
Controls Panel, Keyboard Interface, Cpu & Sound Generator Pcb Layouts.
4
Left, Middle, Right Contacts Board Schematics.
4
with the same signal name inscribed.
ATTENTION Observe precautions when handling electrostatic sensitive devices.
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.
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.
All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V.
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SERVICE MANUAL
code 270290
Power Supply & Amplifier Board, Phones Board Schematics.
Spare Part List.
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