Kyocera 300ci Service Manual page 265

Code
C7200 Broken internal thermistor wire
An abnormal value is detected in the
input data to inner temperature sensor 1.
C7210 Short-circuited internal thermistor
An abnormal value is detected in the
input data to inner temperature sensor 1.
C7240 Broken internal thermistor 2 wire
An abnormal value is detected in the
input data to inner temperature sensor 2.
C7250 Short-circuited internal thermistor 2
An abnormal value is detected in the
input data to inner temperature sensor 2.
C7401 Developing unit K type mismatch
problem
Absence of the developing unit K is
detected.
C7402 Developing unit C type mismatch
problem
Absence of the developing unit C is
detected.
C7403 Developing unit M type mismatch
problem
Absence of the developing unit M is
detected.
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector YC13 on
connector termi- the engine PWB and laser scanner unit, and
nals. the continuity across the connector termi-
nals. Repair or replace if necessary.
Defective laser Replace the laser scanner unit (see page 1-
scanner unit. 5-21).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Poor contact in the Check the connection of connector YC13 on
connector termi- the engine PWB and laser scanner unit, and
nals. the continuity across the connector termi-
nals. Repair or replace if necessary.
Defective laser Replace the laser scanner unit (see page 1-
scanner unit. 5-21).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Poor contact in the Check the connection of connector YC8 on
connector termi- the engine PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Poor contact in the Check the connection of connector YC8 on
connector termi- the engine PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Developing unit Reinsert the developing unit connector if
connector inserted necessary.
incorrectly.
Different type of Install the correct developing unit.
the developing unit
is installed.
Developing unit Reinsert the developing unit connector if
connector inserted necessary.
incorrectly.
Different type of Install the correct developing unit.
the developing unit
is installed.
Developing unit Reinsert the developing unit connector if
connector inserted necessary.
incorrectly.
Different type of Install the correct developing unit.
the developing unit
is installed.
2JZ/2JX/2JV/2H7-1
Remarks
1-4-47