Kyocera TASKalfa 7002i Service Manual page 1237

Step Check description
4 Replacing the PF main
PWB
5 Replacing the engine PWB The engine PWB is faulty.
C1900: Large capacity feeder EEPROM error
Condition: When outputting Event Log after turning the main power off and on while
disconnecting the connector of the cable from the side multi feeder, this service call
error is not recorded. (It is caused by the large capacity feeder.)
(For the internal count)
The writing data and the reading data mismatch 3 times continuously when writing.
Step Check description
1 Firmware upgrade
2 Checking the connection
3 Replacing the PF main
PWB
Assumed cause
The PF main PWB is
faulty.
Assumed cause
The firmware is not the lat-
est version.
The connector is not prop-
erly connected. Or, the
wire is faulty.
The PF main PWB is
faulty.
7-377
Measures
Replace the PF main PWB.
(Side multi feeder)
Replace the engine PWB.
Measures
Upgrade the engine firmware
and the large capacity feeder
firmware to the latest version.
Clean the terminal of the fol-
lowing wire connectors and
reconnect the connectors. If
there is no continuity, replace
the wire. • PF main PWB
(Large capacity feeder) - PF
main PWB (Side multi feeder)
• PF main PWB (Side multi
feeder) - Engine PWB
Replace the PF main PWB.
(Large capacity feeder)
2WA/2NJ/2RK
Reference
Detaching
and reat-
taching the
PF main
PWB (Side
multi
feeder)
Detaching
and reat-
taching the
engine
PWB
Reference
Firmware
Update
Wiring dia-
gram
Detaching
and reat-
taching the
PF main
PWB
(Large
capacity
feeder)