Alesis GA0, Service Manual

Page: 21 / 55

parts name and NO parts name and NO
R50 Resistor
R50 Resistor
R3 Resistor R3 Resistor
R41 Resistor R41 Resistor
R29 Resistor R29 Resistor
C5 E/C C5 E/C
C36 E/C C36 E/C
ZD2 ZENER DIODE ZD2 ZENER DIODE
R5 Resistor R5 Resistor
RTH Thermal Resisto RTH Thermal Resistor
NO R53 Resistor
NO D8 ， D9 DIODE
NO R6,R46 Resistor
NO TSW temperature SW
PCB PCB
parts name and NO
parts name and NO
R3 Resistor R3 Resistor
R41 Resistor R41 Resistor
R29 Resistor R29 Resistor
C5 E/C C5 E/C
C36 E/C C36 E/C
ZD2 ZENER DIODE
ZD2 ZENER DIODE
R5 Resistor R5 Resistor
RTH Thermal Resisto RTH Thermal Resistor
NO
R53 Resistor
Implement：
To change from the 2nd production.
。
Remark
To see GA1-PWR&AMP-V1.1 diagram for detail modified information.
1/8W,4.7K ohm,+/-5%,horizontal RR0147010210 Cancel
Cancel
Cancel
10K
Ω
,Minus temperature modulus,
±
5% RR0810020000
Cancel
8.2V 1/2W ZD1008210000 1/8W,0 ohm,+/-5%,horizontal RR0100000210
22UF/50V,+/-20%,105
℃
,
Φ
5*11mm EC1220505220 0.47UF/50V,+/-20%,105
℃
,
Φ
5*11mm EC1470305220
22UF/50V,+/-20%,105 ℃ , Φ 5*11mm EC1220505220 1UF/50V,+/-20%,105 ℃ , Φ 5*11mm EC1100405220
RR0156010210
1/8W,20K ohm,+/-5%,horizontal RR0120020210 1/8W,10K ohm,+/-5%,horizontal RR0110020210
1/8W,2.2K ohm,+/-5%,horizontal RR0122010210 1/8W,1.8K ohm,+/-5%,horizontal RR0118010210
The content of changes：
before change after change
description P/N
RR0147010210
description P/N
The reason of changes：
Modify the design:
1/8W,3K ohm,+/-5%,horizontal RR0130010210 1/8W,5.6K ohm,+/-5%,horizontal
MODEL NO：GA1
The important change：
Modify the temperature protection circuitry and PCB LAYOUT 。
NO NO 1/8W,0 ohm,+/-5%,horizontal ，P=7.5MM RR0100000212
1/8W,10K ohm,+/-5%,horizontal RR0110020210 1/8W,4.7K ohm,+/-5%,horizontal
Implement：
The 1st production use V1.0 VERSION.It works to connect the wire outside.Use V1.1 version since 2nd production.
The units would recovery to normal working situation after reset the power when teperature increase and the unit into protection in
original design.The unit can work properly automatically when the temperature decrease after modify the design.
Remark
To disconnect the third feet of the encoder and GND and then connet to the second feet of J15 socket.See GAX-MAIN-V1.1 circuit
diagram for detail modified information.
（
ECN
）
DATE：RD03092801
更改设计
:
MODEL NO：GA2
The important change：
Modify the temperature protection circuitry and PCB LAYOUT 。
The reason of changes：
（
ECN
）
DATE：RD03092801
The units would recovery to normal working situation after reset the power when teperature increase and the unit into protection in
original design.The unit can work properly automatically when the temperature decrease after modify the design.
94V0 SINGLE
PANEL
，
SIZE:200*80*1.6MM GREEN
NO
CB0174701000
NO NO
NO NO
NO
94V0 SINGLE
PANEL
，
SIZE:200*80*1.6MM GREEN
DI0100414803
CB0174701000
1/8W,10K ohm,+/-5%,horizontal
UP72,85 DEGREE,LEAD WIRE L=110mm EL0100000002
RR0110020210
1N4148,75V,200mA,1/2W ， P=7.5MM
The content of changes：
before change after change
description P/N description P/N
1/8W,3K ohm,+/-5%,horizontal RR0130010210 1/8W,5.6K ohm,+/-5%,horizontal RR0156010210
1/8W,20K ohm,+/-5%,horizontal RR0120020210 1/8W,10K ohm,+/-5%,horizontal RR0110020210
1/8W,10K ohm,+/-5%,horizontal RR0110020210 1/8W,1K ohm,+/-5%,horizontal
RR0110010210
22UF/50V,+/-20%,105 ℃ , Φ 5*11mm EC1220505220 1UF/50V,+/-20%,105 ℃ , Φ 5*11mm EC1100405220
22UF/50V,+/-20%,105
℃
,
Φ
5*11mm EC1220505220 0.47UF/50V,+/-20%,105
℃
,
Φ
5*11mm EC1470305220
8.2V 1/2W ZD1008210000 1/8W,0 ohm,+/-5%,horizontal RR0100000210
1/8W,4.7K ohm,+/-5%,horizontal RR0147010210 Cancel Cancel
10K Ω ,Minus temperature modulus, ± 5% RR0810020000 Cancel Cancel
NO NO
1/8W,4.7K ohm,+/-5%,horizontal,P=7.5MM RR0147010211