Alesis GA0, Service Manual

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parts name and NO
parts name and NO
JP18 Jumper wire
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JP19 Jumper wire
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parts name and NO
parts name and NO
POWER SW POWER SW
GND WIRE GND WIRE
parts name and NO parts name and NO
PCB panel PCB panel
Green with yellow,L=5+150mm(one end bare
5MM tined),another end with
Ф 4.2 round
i l 18#/ 101
Green with yellow,L=5+150mm(one end bare
5MM tined),another end with
Ф 4.2 round
i l 18#/ 101
WL2150010420 WL2150120420
CB1174702000
FR4 dual panel,144*45*1.6mm,1OZ copper
green oil (ALESIS GAX MAIN_V1.0)
CB1174702000
FR4 dual panel,144*45*1.6mm,1OZ copper
green oil (ALESIS GAX MAIN_V1.1)
Remark
（
ECN
）
The reason of changes：
P/N
It easy make the power breaker off and the digital tube did not display.So the unit can not work properly when the encoder round to
the place between detent and detent.
The content of changes：
before change after change
description description
MODEL NO：GA0,GA1,GA2
The important change：
MODIFY THE ENCODER VALUE ON MAIN PANEL SECTION CIRCUITRY AND PCB LAYOUT。
P/N
DATE：RD03091201
Implement：
To change from the 2nd production.
。
RA20KKFTOF,MAKED WITH 'I/O'
SW0901200001
0KKFTOF,SECONDARY 3P Marked with 'NO
SW0901200002
The content of changes：
before change after change
description P/N description P/N
The reason of changes：
To meet the IEC60065 and VL6500 request.
The important change：
1.Modify the silkscreen of the power SW.
2.Change the color of GND wire.
（
ECN
）
DATE：RD03092501
MODEL NO：GA0,GA1,GA2
Remark
Implement：
To change from the 1st production. 。
Φ 0.8*10mm JP1081000000 Cancel Cancel
Φ 0.8*10mm JP1081000000
Cancel Cancel
description P/N description P/N