Description: Abnormal Image Transfer Voltage
• The image transfer voltage exceeds 100 V for the set period of time while the Imaging Unit Motor remains stopped.
Remedy: 1 Check the installation of the Image Transfer Roller. 2 Replace TH1.
Code: C0500
Description: Fusing Warm-Up Failure (Main)
• The Fusing Roller Thermistor does not detect the required temperature within 30 sec. after a warm-up cycle has begun; therefore, the copier does not complete the warm-up cycle. • The temperature of the Fusing Rollers does not reach the required level even after the set period of time has elapsed during a warm-up cycle.
Remedy: 1 Check that the Fusing Roller Heater Lamp comes on when the Power Switch is set to ON, and correct or replace as necessary. 2 Check that the Fusing Roller Sub Heater Lamp comes on when the Power Switch is set to ON, and correct or replace as necessary. 3 Check the installation of the Fusing Roller Thermistor and the Fusing Roller Sub Thermistor, and correct or clean as necessary. 4 Check the operation of the Fusing Roller Thermistor. Remove CN80 (4P), and then check that the resistance across CN80-2 and - 3 on the Thermistor is infinity. 5 Check the operation of the Fusing Roller Sub Thermistor. Remove CN81 (4P), and then check that the resistance across CN81-2 and - 3 on the Thermistor is infinity. 6 Check the continuity of the Fusing Roller Heater Lamp. Correct or replace as necessary. 7 Check the continuity of the Fusing Roller Sub Heater Lamp. Correct or replace as necessary. 8 Replace PU1. 9 Replace PWB-A.
Code: C0501
Description: Fusing Warm-Up Failure (Sub)
• The Fusing Roller Sub Thermistor does not detect the required temperature within 30 sec. after a warm-up cycle has begun; therefore, the copier does not complete the warm-up cycle. • The temperature of the Fusing Rollers does not reach the required level even after the set period of time has elapsed during a warm-up cycle.
Remedy: 1 Check that the Fusing Roller Heater Lamp comes on when the Power Switch is set to ON, and correct or replace as necessary. 2 Check that the Fusing Roller Sub Heater Lamp comes on when the Power Switch is set to ON, and correct or replace as necessary. 3 Check the installation of the Fusing Roller Thermistor and the Fusing Roller Sub Thermistor, and correct or clean as necessary. 4 Check the operation of the Fusing Roller Thermistor. Remove CN80 (4P), and then check that the resistance across CN80-2 and - 3 on the Thermistor is infinity. 5 Check the operation of the Fusing Roller Sub Thermistor. Remove CN81 (4P), and then check that the resistance across CN81-2 and - 3 on the Thermistor is infinity. 6 Check the continuity of the Fusing Roller Heater Lamp. Correct or replace as necessary. 7 Check the continuity of the Fusing Roller Sub Heater Lamp. Correct or replace as necessary. 8 Replace PU1. 9 Replace PWB-A.
Code: C0510
Description: Low Fuser Temperature Failure (Main)
• The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature below 105C during standby. • The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature below 105C during printing.
Remedy: 1 Check that the Fusing Roller Heater Lamp comes on when the Right-Side Door is opened, then closed, and correct or replace as necessary. 2 Check that the Fusing Roller Sub Heater Lamp comes on when the Right-Side Door is opened, then closed, and correct or replace as necessary. 3 Check the installation of the Fusing Roller Thermistor and the Fusing Roller Sub Thermistor, and correct or clean as necessary. 4 Check the operation of the Fusing Roller Thermistor. Remove CN80 (4P), and then check that the resistance across CN80-2 and -3 on the Thermistor is infinity. 5 Check the operation of the Fusing Roller Sub Thermistor. Remove CN81 (4P), and then check that the resistance across CN81-2 and -3 on the Thermistor is infinity. 6 Check the continuity of the Fusing Roller Heater Lamp. Correct or replace as necessary. 7 Check the continuity of the Fusing Roller Sub Heater Lamp. Correct or replace as necessary. 8 Replace PU1. 9 Replace PWB-A.
Code: C0511
Description: Low Fuser Temperature Failure (Sub)
• The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature below 105C during standby. • The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature below 105C during printing.
Remedy: 1 Check that the Fusing Roller Heater Lamp comes on when the Right-Side Door is opened, then closed, and correct or replace as necessary. 2 Check that the Fusing Roller Sub Heater Lamp comes on when the Right-Side Door is opened, then closed, and correct or replace as necessary. 3 Check the installation of the Fusing Roller Thermistor and the Fusing Roller Sub Thermistor, and correct or clean as necessary. 4 Check the operation of the Fusing Roller Thermistor. Remove CN80 (4P), and then check that the resistance across CN80-2 and -3 on the Thermistor is infinity. 5 Check the operation of the Fusing Roller Sub Thermistor. Remove CN81 (4P), and then check that the resistance across CN81-2 and -3 on the Thermistor is infinity. 6 Check the continuity of the Fusing Roller Heater Lamp. Correct or replace as necessary. 7 Check the continuity of the Fusing Roller Sub Heater Lamp. Correct or replace as necessary. 8 Replace PU1. 9 Replace PWB-A.
Code: C0520
Description: High Fuser Temperature Failure (Main)
• The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature above 240C when the Power Switch is set to ON. • The Fusing Roller Thermistor and Fusing Roller Sub Thermistor are detected to be at a temperature above 240C when the Power Switch is set to ON.
Remedy: 1 Check that the Fusing Roller Heater Lamp comes on when the Right-Side Door is opened, then closed, and correct or replace as necessary. 2 Check that the Fusing Roller Sub Heater Lamp comes on when the Right-Side Door is opened, then closed, and correct or replace as necessary. 3 Check the installation of the Fusing Roller Thermistor and the Fusing Roller Sub Thermistor, and correct or clean as necessary. 4 Check the operation of the Fusing Roller Thermistor. Remove CN80 (4P), and then check that the resistance across CN80-2 and -3 on the Thermistor is infinity. 5 Check the operation of the Fusing Roller Sub Thermistor. Remove CN81 (4P), and then check that the resistance across CN81-2 and -3 on the Thermistor is infinity. 6 Check the continuity of the Fusing Roller Heater Lamp. Correct or replace as necessary. 7 Check the continuity of the Fusing Roller Sub Heater Lamp. Correct or replace as necessary. 8 Replace PU1. 9 Replace PWB-A.