Sinclair SDV 6 Service Manual page 113

8.1.43 P72 - IDU display control board EEPROM fault
Error display
The faulty IDU operates normally, and the error code is displayed on the panel or display box only. Other
Error impact IDUs of the same system: operate normally.
ODU of the same system: operate normally.
Unable to read data from display control board EEPROM (EEPROM: a non-volatile memory whose data are
Error trigger
kept even when powered off)
Error recovery
Automatic recovery

Possible cause

Troubleshooting
110
Digital display
The display control board is damaged.
External interference (such as noise and electromagnetic)
Power off and then
power on the IDU
Is the fault cleared?
The display control board
is normal and subject to
external interference
(such as noise and
electromagnetic)
P72
No
Yes
Display position
Panel or display box
Replace the display
control board