Ipm Check - LG Therma V ZHBW056A0 Service Manual

1. IPM Check

1. Wait PCB DC voltage is discharged after main power off.
2. Pull out V, V, W COMP connector.
3. Set multi tester to resistance mode.
4. If the value between P and N terminal of IPM is short(0Ω) or open(hundreds MΩ), PCB needs to be replaced.(IPM dam-
aged)
5. Set the multi tester to diode mode.
6. In case measured value is different from the table, PCB needs to be replaced. (PCB damaged).
P W V U Nw Nv Nu
27 26 25 24 23 22 21
0.4 ~ 0.6 V
P W
27 26
SPM3
P W V U Nw Nv Nu
27 26 25 24 23 22 21
- 94 -
V U Nw Nv Nu
25 24 23 22 21
0.4 ~ 0.6 V
PFC_IPM check
U, V, W ' R S T
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