Alesis GA0, Service Manual

Page: 19 / 55

parts name and NO parts name and NO
R28 Resistor R28 Resistor
parts name and NO parts name and NO
R35 Resistor R35 Resistor
Remark
Implement：
To change from the 2nd production.
。
1/4W,220 ohm,+/-5%,horizontal RR0122000310 1/2W,220 ohm,+/-5%,horizontal RR0122000410
before change after change
description P/N description P/N
R35 Resistor overheat
The content of changes：
Modify the value of R35 Resistor in amp panel.
The reason of changes：
DATE：RD03091601
MODEL NO：GA0,GA1,GA2
The important change：
Remark
（
ECN
）
Implement：
To change from the 1st production.
。
1/8W,8.2K ohm,+/-5%,horizontal RR0182010210 1/8W,18K ohm,+/-5%,horizontal RR0118020210
before change after change
description P/N description P/N
Increase the gain of the unit.
The content of changes：
The reason of changes：
The content of changes：
before change after change
The reason of changes：
eliminate the low frenquency noise.
MODEL NO：GA0,GA1,GA2
The important change：
modify PCB LAYOUT
（
ECN
）
DATE：RD03091801