Chapter 5 Trouble shooting and maintenance
5-7
5.3
iDrive
Troubleshooting Flowcharts
Is failure fully
understood?
Any symptoms
of burnout ?
Is I.G.B.T
module OK?
Is the main circuit
Diode Module OK
Replace I.G.B.T
Replace Diode Module
Check burnt and damaged
parts
Any abnormalities
in appearances?
Are displays and
indicators of the
operating unit OK
What’s the
message?
Any abnormal
display?
Check last 3 values of b97 with
▼
key.
Is the DC input
voltage controlling
the power correct?
Is +5V control
voltage correct.
Is the error
eliminated after
replacing control
board?
Replace the driver board
Check terminals and
wiring
Replace the display
Perform detailed checks
The inverter faults
* to next page
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
Replace control board and
digital operating unit
NO
YES
iDrive
fault
Symptoms other than burn out,
damage in the inverter?
Abnormal
signal
?
Check according to displayed
abnormal messages
Visually check controller and
driver boards
Apply the power
Any abnormal
display?
abnormal values in
b97?
Replace abnormal board
Is LED lit?
NO
Inverter fault.
Contact your
iDrive
supplier