
Maintenance and Troubleshooting
ADDvantage-32 PLUS ● AC to DC Power Converter
7-16
FAULT MESSAGE PROBLEM SOLUTION
SCR OPN C+F C + open SCR fault message.
SCR CR3 or fuse F10 for 510
amp and below. SCR A103
or fuse F3 for 540 amp and
above bridges.
a. Check fuse.
b. Check cable assembly connected to J2
of microprocessor board and its
associated connectors.
c. Replace SCR or drive base assembly.
d. Replace bridge interface board.
e. Replace microprocessor board.
SCR OPN A-F A - open SCR fault message.
SCR CR4 or fuse F8 for
510 amp and below. SCR
A104 or fuse F4 for 540 amp
and above bridges.
a. Check fuse.
b. Check cable assembly connected to J2
of microprocessor board and its
associated connectors.
c. Replace SCR or drive base assembly.
d. Replace bridge interface board.
e. Replace microprocessor board.
SCR OPN B-F B - open SCR fault message.
SCR CR5 or fuse F9 for
510 amp and below. SCR
A105 or fuse F5 for 540 amp
and above bridges.
a. Check fuse.
b. Check cable assembly connected to J2
of microprocessor board and its
associated connectors.
c. Replace SCR or drive base assembly.
d. Replace bridge interface board.
e. Replace microprocessor board.
SCR OPN C-F C - open SCR fault message.
SCR CR6 or fuse F10 for 510
amp and below. SCR A106
or fuse F6 for 540 amp and
above bridges.
a. Check fuse.
b. Check cable assembly connected to J2
of microprocessor board and its
associated connectors.
c. Replace SCR or drive base assembly.
d. Replace bridge interface board.
e. Replace microprocessor board.
SCR OPN A+R Open SCR fault message.
SCR CR1 or fuse F8 for
510 amp and below. SCR
A101 or fuse F1 for 540 amp
and above bridges.
a. Check fuse.
b. Check cable assembly connected to J2
of microprocessor board and its
associated connectors.
c. Replace SCR or drive base assembly.
d. Replace bridge interface board.
e. Replace microprocessor board.
SCR OPN B+R Open SCR fault message.
SCR CR2 or fuse F9 for
510 amp and below. SCR
A102 or fuse F2 for 540 amp
and above bridges.
a. Check fuse.
b. Check cable assembly connected to J2
of microprocessor board and its
associated connectors.
c. Replace SCR or drive base assembly.
d. Replace bridge interface board.
e. Replace microprocessor board.
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