Check Main On / Off Switch - ESAB fabricator 141i Service Manual

IGBT Testing
IGBT 1
IGBT 2
IGBT 4
IGBT 5
Inrush PTC
PTC

6.08 Check Main ON / OFF Switch

Power Switch Testing
Switch ON
Switch ON
Switch OFF
Switch OFF
Manual 0-5448
Multimeter Lead Placement
Positive meter lead to testpoint 17
Negative meter lead to testpoint 9
Positive meter lead to testpoint 18
Negative meter lead to testpoint 11
Positive meter lead to testpoint 19
Negative meter lead to testpoint 13
Positive meter lead to testpoint 20
Negative meter lead to testpoint 15
Table 6-4 IGBT's, Multimeter set to measure ohms (Ω)
Multimeter Lead Placement
Positive meter lead to testpoint 21
Negative meter lead to testpoint 22
Table 6-5 Inrush PTC, Multimeter set to measure ohms (Ω)
Multimeter Lead Placement
Positive meter lead to testpoint 23
Negative meter lead to testpoint 24
Positive meter lead to testpoint 25
Negative meter lead to testpoint 26
Positive meter lead to testpoint 23
Negative meter lead to testpoint 24
Positive meter lead to testpoint 25
Negative meter lead to testpoint 26
Table 6-6 Power Switch, Multimeter set to measure ohms (Ω)
6-7
ESAB FABRICATOR 141i
24
26 25
Art # A-10459
Impedance
150 to 350 Ω
150 to 350 Ω
150 to 350 Ω
150 to 350 Ω
Impedance
80 to 120 Ω
23
Impedance
0 to 1 Ω
0 to 1 Ω
> 1k Ω
> 1k Ω
TROUBLESHOOTING