GEM RP60, RP70, RP80 User Manual
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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 - GENERALMUSIC on the NET: http://www.generalmusic.com
Opening & Keyboard Disassembling Instructions2
Autotest Procedure
3 Block Diagram
5
6 L/R Contact, Keyboard Interface, Controls Panel and Display Boards
7
Timing Table, Power Amplifier & Supply and Phones Boards
8 RP80 Cpu & Sound Generator Board
9
Spare Part List
RP60/70 Cpu & Sound Generator Board
4
SERVICE MANUAL
CODE: 270237
Warnings
with the same signal name inscribed.
Address
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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☎
2nd edition november 2000
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1) TO REMOVE THE COVER UNSCREW THE 4 SCREWS ON THE REAR, PULL THE COVER TOWARDS YOU AND LIFT IT UP.
2) TO REMOVE THE CONTROL PANEL UNSCREW THE SCREWS AT EACH END AND THE SCREWS THAT ANCHOR
4) TO REMOVE A KEY INSERT A SCREWDRIVER OR OTHER SIMILAR OBJECT IN THE SPLIT AT THE KEY BACK, APPLY A LIGHT PRESSURE AND PUSH IN THE DIRECTION SHOWN.
NOTE: BEFORE YOU REMOVE A NATURAL KEY YOU MUST REMOVE THE KEYBOARD, IF YOU REMOVE A SHARP KEY THIS OPERATION IS NOT NECESSARY
3) TO REMOVE THE KEYBOARD TP21 UNSCREW THE 11 SCREWS UNDER THE KEYBOARD.
THE CONTROL PANEL SUPPORTS TO THE CHASSIS.
TP21
APP.
CKD
DRW
REV:
DISK:
DWG#
PRT:
PCB#
GENERALMUSIC S.p.A. ITALY
ALL RIGHTS ARE RESERVED, NO COPIES
WRITTEN CONSENT BY GENERALMUSIC.
OR REPRODUCE THIS DOCUMENT WITHOUT
G.Boccato
I.Vitri
R.Morbidi
500901
1/1
31/03/00
RP-90
Opening Instructions
& Keyboard disassembling
NOTE: BEFORE YOU REMOVE A NATURAL KEY YOU MUST REMOVE THE KEYBOARD, TO REMOVE A SHARP KEY BEFORE YOU MUST REMOVE THE NEAR NATURAL KEYS.
4) TO REMOVE A KEY BEFORE REMOVE THE KEY RETURN SPRING, INSERT A SCREWDRIVER OR OTHER SIMILAR OBJECT IN THE SPLIT AT THE KEY BACK,
APPLY A LIGHT PRESSURE AND PUSH IN THE DIRECTION SHOWN.
TP8
2) TO REMOVE THE CONTROL PANEL UNSCREW THE SCREWS AT EACH END AND THE SCREWS THAT ANCHOR
THE CONTROL PANEL SUPPORTS TO THE CHASSIS.
RP80RP60/70
3
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