General Music GRP300 BALDWIN, Service Manual

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1
J J J J J
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 - tel. 0541/959511 - fax 0541/957404
GENERALMUSIC on the NET: http://www.generalmusic.com
2
3
Opening Instructions & Keyboard disassembling
6
7
RP200 Initial Check, Autotest Procedure, Updating Procedure
8
RP100-150 Initial Check, Autotest Procedure, Updating Procedure
RP100 - Power Amplifier & Supply, Pedals, Phones, Outputs Boards
RP200 Block Diagram
4
SERVICE MANUAL
L
CODE: 270212
M
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 1/8
Ω
unless otherwise specified.
All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V.
9
10
RP150 - Power Amplifier & Supply, Pedals, Phones, Outputs Boards
12
13
Keyboard Interface & Contacts Boards
14
RP200 - Power Amplifier & Supply, Pedals, Mixer & Phones Aplifier, Phones, Outputs Boards
RP100-150 Cpu & Sound Generator Board
RP200 Controls Panel & Display Boards
11
RP100-150 Block Diagram
RP100-150 Controls Panel & Display Boards
15
Timing Table & 310603 Board Layout
16
RP200 Cpu & Sound Generator Board Part 1 of 2
17 RP200 Cpu & Sound Generator Board Part 2 of 2
18
RP100 and RP150 Spare Part List
19
RP200 Spare Part List