Lincoln Electric IM422 PRO-CUT 40 - Manual (Page 21)

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Step
5
Test
D9 Input
Rectifier
Check *
13 (pos) to T1
(neg)
13 (pos) to T2
(neg)
13 (pos) to T3
(neg) (3 phase
only)
12 (neg) to T1
(pos)
12 (neg) to T2
(pos)
Test Result
>1K ohms
<100 ohms
>1K ohms
<100 ohms
>1K ohms
<100 ohms
>1K ohms
<100 ohms
>1K ohms
<100 ohms
Conclusion
OK
Shorted
OK
Shorted
OK
Shorted
OK
Shorted
OK
Shorted
Next
Test
Step
1-2
1-2
1-2
1-2
1-2
Repair Action
Replace D9 In
space S1 Test
C1 and C2
Replace D9
Inspect S1
Test C1 and
C2
Replace D9
Inspect S1
Test C1 and
C2
Replace D9
Inspect S1
Test C1 and
C2
Replace D9
Inspect S1
Test C1 and
C2