Kyocera TASKalfa 7002i Service Manual page 1330

C8900: DF backup error
Object: 4000-sheet finisher
(For the internal count)
The writing data and the reading data mismatch 3 times continuously.
Step Check description
1 Checking the connection
2 Replacing the DF main
PWB
C8930: BF unit backup error
Object: 4000-sheet finisher + Folding unit
(For the internal count)
The writing data and the reading data mismatch 3 times continuously.
Step Check description
1 Checking the connection
2 Replacing the BF main
PWB
Assumed cause
The connector is not prop-
erly connected. Or, the
wire is faulty.
The DF main PWB is
faulty.
Assumed cause
The connector is not prop-
erly connected. Or, the
wire is faulty.
The BF main PWB is
faulty.
7-470
Measures
Clean the terminal of the fol-
lowing wire connectors and
reinsert the connectors.
Replace the wire when it has
no continuity. • DF main PWB
- Engine PWB
Replace the DF main PWB.
Measures
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • BF main PWB -
DF main PWB
Replace the BF main PWB.
2WA/2NJ/2RK
Reference
Wiring dia-
gram
Detaching
and reat-
taching the
DF main
PWB
Reference
Wiring dia-
gram