Kyocera FS-C8500DN Service Manual page 195

Code
C7101 Toner sensor K problem
Sensor output value of 60 or less or 944
or more continued for 3 s.
C7102 Toner sensor C problem
Sensor output value of 60 or less or 944
or more continued for 3 s.
C7103 Toner sensor M problem
Sensor output value of 60 or less or 944
or more continued for 3 s.
C7104 Toner sensor Y problem
Sensor output value of 60 or less or 944
or more continued for 3 s.
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.
Contents
Causes Check procedures/corrective measures
Defective develop- Replace the developing unit K (see page 1-
ing unit K. 5-25).
Defective PWB. Replace the main front PWB or engine PWB
and check for correct operation.
Defective develop- Replace the developing unit C (see page 1-
ing unit C. 5-25).
Defective PWB. Replace the sub front PWB or engine PWB
and check for correct operation.
Defective develop- Replace the developing unit M (see page 1-
ing unit M. 5-25).
Defective PWB. Replace the sub front PWB or engine PWB
and check for correct operation.
Defective develop- Replace the developing unit Y (see page 1-
ing unit Y. 5-25).
Defective PWB. Replace the sub front PWB or engine PWB
and check for correct 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. 5-11).
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. 5-11).
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.
Remarks
2KA
1-4-41