Kyocera KM-C2520 Service Manual page 198

2FZ/2F0/2HC-3
Code
C7103 Toner sensor M problem
Sensor output value of 78 or less or 944
or more continued for 3 s.
C7104 Toner sensor Y problem
Sensor output value of 78 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.
C7220 Broken internal thermistor 2 wire
An abnormal value is detected in the
input data to inner temperature sensor 2.
C7230 Short-circuited internal thermistor 2
An abnormal value is detected in the
input data to inner temperature sensor 2.
C7240 Broken internal thermistor 3 wire
An abnormal value is detected in the
input data to inner temperature sensor 3.
C7250 Short-circuited internal thermistor 3
An abnormal value is detected in the
input data to inner temperature sensor 3.
1-4-38
Contents
Causes Check procedures/corrective measures
Defective develop- Replace the developing unit M (see page 1-
ing unit M. 5-26).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-32).
Defective develop- Replace the developing unit Y (see page 1-
ing unit Y. 5-26).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-32).
Poor contact in the Check the connection of connector YC16 on
connector termi- the engine PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective laser Replace the laser scanner unit (see page 1-
scanner unit. 5-18).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-32).
Poor contact in the Check the connection of connector YC16 on
connector termi- the engine PWB and the continuity across
nals. the connector terminals. Repair or replace if
necessary.
Defective laser Replace the laser scanner unit (see page 1-
scanner unit. 5-18).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-32).
Poor contact in the Check the connection of connector YC28 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 (see page 1-5-32).
Poor contact in the Check the connection of connector YC28 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 (see page 1-5-32).
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 (see page 1-5-32).
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 (see page 1-5-32).
Remarks