Kyocera TASKalfa 7002i Service Manual page 1337

C9540: Backup data error
When multiple parts are replaced at the same time, the internal data is changed and it interferes with the
machine operation. Consequently, the main unit cannot recover.
Step Check description
1 Checking the PWB
2 Checking the unit
Assumed cause
Multiple PWBs were
replaced at the same time.
Multiple units were
replaced at the same time.
7-477
Measures
Recover to the original, if 2 or
more of the following related
parts were replaced at the
same time. • Related parts:
Memory, each PWB
Be sure not to perform the
following works at the same
time when the memory or
each PWB is replaced. •
Replacing the drum unit or
the developer unit • Relocat-
ing the drum units to other
colorspositioninsidea-
mainunit'
2WA/2NJ/2RK
Reference