Kyocera KM-C2525E Service Manual page 199

Code
C1900 Paper feeder EEPROM error (optional
paper feeder)
When writing the data, the write data and
the read data is not continuously in
agreement three times.
C1950 Transfer belt unit EEPROM error
Read and write data does not match.
C2101 Paper feed/developing motor BK error
After the motor drive ON signal is output
and 1 s elapses, the rated speed reach
signal is not input continuously for 2 s.
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector on the
connector termi- engine PWB and the connector on the paper
nals. feeder main PWB, and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-31).
Defective paper Replace the paper feeder with another unit
feeder. and check the operation. If the operation is
normal, replace or repair optional paper
feeder.
Poor contact in the Check the connection of connector YC28 on
connector termi- the engine PWB and the connector on the
nals. transfer belt unit, and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective transfer Replace the transfer belt unit (see page 1-5-
belt speed detec- 27).
tion PWB (inner
transfer belt unit).
Poor contact in the Check the connection of connector YC8 on
connector termi- the engine PWB and the connector on the
nals. paper feed/developing motor BK, and the
continuity across the connector terminals.
Repair or replace if necessary.
Defective drive Check if the rollers and gears rotate
transmission sys- smoothly. If not, grease the bushings and
tem. gears. Check for broken gears and replace if
any.
Defective engine Run maintenance item U030 and check if
PWB. YC8-27 (remote signal) on the engine PWB
goes low. If not, replace the engine PWB
(see page 1-5-31).
Defective paper Run maintenance item U030 and check if
feed/developing the paper feed/developing motor BK oper-
motor BK. ates when YC8-27 (remote signal) on the
engine PWB goes low. If not, replace the
paper feed/developing motor BK.
2JL/2JJ/2JG/2JD
Remarks
1-4-29