Miller CST 280 - Page 36

OM-258 035 Page 32
PC2 LED Diagnosis (For PC Board 239 001 Or 245 857)
LED Status Remedy
D2
(Secondary Power)
Transformer T3 secondary voltage is up when lit. If not lit, contact factory authorized service
agent.
D42
(Ready)
Status of precharge bus voltage and line voltage.
Precharge should be completed when lit.
If not lit, contact factory authorized service
agent.
D43
(Capacitor Over-voltage)
490 VDC or greater on one or both bus capacitors
when lit.
If lit, contact factory authorized service agent.
D44
(Primary Power)
Transformer T3 primary control voltage is up when lit. If not lit, contact factory authorized service
agent.