GEM Realpiano Rp700 DIGITAL Service Manual

SERVICE MANUAL
®
Index
2 Opening & Keyboard Disassembling Instructions.
3 Repair Instructions & Timing Table.
4 Block Diagram, Mains Filter Board Schematics.
4 Power Supply & Amplifier Board, Phones Board Schematics.
5 Left, Middle, Right Contacts Board Schematics.
5 Keyboard Interface, In/Out, Controls Panel Board Schematics.
6 CPU & Sound Generator Board Schematic.
7 Power Supply& Amplifier Board, Mains Filter, In/Out Pcb Layouts.
7 Controls Panel, Keyboard Interface, Cpu & Sound Generator Pcb Layouts.
8 Spare Part List.
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
✔
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.
✔
Soldering point.
✔
Male connector.
✔
Female connector.
✔
ATTENTION
✒
GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12
code 270290
☎
Phone +39(0)541/959511 - Fax +39(0)541/957404 - Internet: www.generalmusic.com
) omega symbol of resistance value is substituted by E.
Supply voltage.
Test point.
Flag joined with one or more flags
M/F faston connector. with the same signal name inscribed.
Observe precautions when handling electrostatic sensitive devices.
Logic supply ground.
Analog supply ground.
Chassis ground.
Earth ground.
1