Code :

Code: C7200
Description: Broken internal thermistor wire An abnormal value is detected in the input data to inner temperature sensor 1.
Causes: Poor contact in the connector terminals. Defective laser scanner unit. Defective engine PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector YC16 on the engine PWB and the continuity across the connector terminals. Repair or replace if necessary. Defective laser scanner unit. Replace the laser scanner unit. Defective engine PWB. Replace the engine PWB and check for correct operation.

Code: C7210
Description: Short-circuited internal thermistor An abnormal value is detected in the input data to inner temperature sensor 1.
Causes: Poor contact in the connector terminals. Defective laser scanner unit. Defective engine PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector YC16 on the engine PWB and the continuity across the connector terminals. Repair or replace if necessary. Defective laser scanner unit. Replace the laser scanner unit. Defective engine PWB. Replace the engine PWB and check for correct operation.

Code: C7220
Description: Broken internal thermistor 2 wire An abnormal value is detected in the input data to inner temperature sensor 2.
Causes: Poor contact in the connector terminals. Defective engine PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector YC28 on the engine PWB and the continuity across the connector terminals. Repair or replace if necessary. Defective engine PWB. Replace the engine PWB and check for correct operation.

Code: C7230
Description: Short-circuited internal thermistor 2 An abnormal value is detected in the input data to inner temperature sensor 2.
Causes: Poor contact in the connector terminals. Defective engine PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector YC28 on the engine PWB and the continuity across the connector terminals. Repair or replace if necessary. Defective engine PWB. Replace the engine PWB and check for correct operation.

Code: C7240
Description: Broken internal thermistor 3 wire An abnormal value is detected in the input data to inner temperature sensor 3.
Causes: Poor contact in the connector terminals. Defective engine PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector YC8 on the engine PWB and the continuity across the connector terminals. Repair or replace if necessary. Defective engine PWB. Replace the engine PWB and check for correct operation.

Code: C7250
Description: Short-circuited internal thermistor 3 An abnormal value is detected in the input data to inner temperature sensor 3.
Causes: Poor contact in the connector terminals. Defective engine PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector YC8 on the engine PWB and the continuity across the connector terminals. Repair or replace if necessary. Defective engine PWB. Replace the engine PWB and check for correct operation.

Code: C7401
Description: Developing unit BK type mismatch problem Absence of the developing unit BK is detected.
Causes: Developing unit connector inserted incorrectly. Different type of the developing unit is installed.
Remedy: Developing unit connector inserted incorrectly. Reinsert the developing unit connector if necessary. Different type of the developing unit is installed. Install the correct developing unit.

Code: C7402
Description: Developing unit C type mismatch problem Absence of the developing unit C is detected.
Causes: Developing unit connector inserted incorrectly. Different type of the developing unit is installed.
Remedy: Developing unit connector inserted incorrectly. Reinsert the developing unit connector if necessary. Different type of the developing unit is installed. Install the correct developing unit.