Allen-Bradley PowerFlex 700H Hardware Service Manual page 15

No HIM Display
Use this procedure when the HIM does not function:
Check HIM
Properly
Connection
Connected?
and Seating
DC Bus
Measure DC Bus
Voltage within
Voltage
Specification?
Measure Power
Supply on X4 of
DPI Circuit Board
Reseat or
No
reconnect
HIM
Yes
Perform forward
No diode tests on
Rectifying Module
Examine Bus
Capacitors for
Yes
Charring and
Damaged Reliefs
Yes
Voltage
No
Equal 12V dc?
Yes
Check DPI and
Power Supply
Connections
Replace HIM
Troubleshooting and Error Codes
Rectifying
Module OK?
Yes
Capacitors
OK?
Yes
Replace Power
Interface Board
(on 700S)
Replace Output
Power Module
(on 700H)
Does HIM
Function?
No
1-7
Replace Rectifying
No
Module
Replace
No
Capacitors