Description: Fusing failure (abnormally high fusing temperature)
• The temperature detected by the Fusing Roller Thermistor remains higher than 240°C for a given period of time.
Remedy: 1 Check that the Fusing Roller Heater Lamp (H1) turns ON when the Power Switch is turned ON and correct or replace the lamp as necessary. 2 Check that the Fusing Roller Sub Heater Lamp (H2) turns ON when the Power Switch is turned ON and correct or replace the lamp as necessary. 3 Check the Fusing Roller Thermostat (TS1) for operation. <Check procedure> Check the resistance of TS1. TS1 is open-circuited if its resistance is infinity. F-2 4 Check the Fusing Unit Interlock Switch (S2) for operation. <Check procedure> Check continuity across the following terminals when S2 is ON. • Across S2-1A and S2-1B • Across S2-2A and S2-2B E-16 5 Check the Fusing Roller Thermistor (TH1) and Fusing Roller Sub Thermistor (TH2) for installation and correct or clean as necessary. 6 Check the Fusing Roller Thermistor (TH1) for operation. <Check procedure> Disconnect CN15 (4P) and check the resistance across CN15-2 and 3 on the Thermistor side. TH1 is open-circuited if the resistance is infinity. 7 Check the Fusing Roller Sub Thermistor (TH2) for operation. <Check procedure> Disconnect CN22 (4P) and check the resistance across CN22-2 and 3 on the Thermistor side. TH2 is open-circuited if the resistance is infinity. D-2 8 Check the Fusing Roller Heater Lamp (H1) for continuity and correct or replace as necessary. 9 Check the Fusing Roller Sub Heater Lamp (H2) for continuity and correct or replace as necessary. 10 Change PU1. 11 Change PWB-A.
Code: C0521
Description: Fusing failure (abnormally high fusing temperature 2)
• The temperature detected by the Fusing Roller Sub Thermistor remains higher than 240°C for a given period of time.
Remedy: 1 Check that the Fusing Roller Heater Lamp (H1) turns ON when the Power Switch is turned ON and correct or replace the lamp as necessary. 2 Check that the Fusing Roller Sub Heater Lamp (H2) turns ON when the Power Switch is turned ON and correct or replace the lamp as necessary. 3 Check the Fusing Roller Thermostat (TS1) for operation. <Check procedure> Check the resistance of TS1. TS1 is open-circuited if its resistance is infinity. F-2 4 Check the Fusing Unit Interlock Switch (S2) for operation. <Check procedure> Check continuity across the following terminals when S2 is ON. • Across S2-1A and S2-1B • Across S2-2A and S2-2B E-16 5 Check the Fusing Roller Thermistor (TH1) and Fusing Roller Sub Thermistor (TH2) for installation and correct or clean as necessary. 6 Check the Fusing Roller Thermistor (TH1) for operation. <Check procedure> Disconnect CN15 (4P) and check the resistance across CN15-2 and 3 on the Thermistor side. TH1 is open-circuited if the resistance is infinity. 7 Check the Fusing Roller Sub Thermistor (TH2) for operation. <Check procedure> Disconnect CN22 (4P) and check the resistance across CN22-2 and 3 on the Thermistor side. TH2 is open-circuited if the resistance is infinity. D-2 8 Check the Fusing Roller Heater Lamp (H1) for continuity and correct or replace as necessary. 9 Check the Fusing Roller Sub Heater Lamp (H2) for continuity and correct or replace as necessary. 10 Change PU1. 11 Change PWB-A.
Code: C0650
Description: Faulty Scanner Home Position Sensor
• The Scanner Home Position Sensor (PC10) does not go from HIGH to LOW when the Scanner Motor (M5) is energized for a given number of steps after the sequence to bring the Scanner back to its home position has been started at the end of a scan motion and during re-shading. • The Scanner Home Position Sensor (PC10) does not go from LOW to HIGH when the Scanner Motor (M5) is energized for a given number of steps after a scan motion has been started at the end of a Scanner Home Position Sensor home check scan motion and during re-shading.
Remedy: 1 Check M5 connectors for proper connection and correct as necessary. 2 Check M5 for correct drive coupling and correct as necessary. 3 M5 operation check. 4 Scanner operation check. 5 PC10 sensor check. 6 Change PWB-C/C.
Code: C0B60
Description: Bin Switching Motor malfunction (Only when the optional JS-204 is mounted)
Remedy:
Code: C0B80
Description: Shift Motor malfunction (Only when the optional OT-103 is mounted)
Remedy:
Code: C0F32
Description: Faulty ATDC Sensor
• The measurement taken by the ATDC Sensor (UN1) at a time 2.0 sec. after the Main Motor (M1) has started a time 2.0 sec. after the Main Motor (M1) has started turning is less than 5% (greater than 4.63 V). • The measurement taken by the ATDC Sensor (UN1) at a time 2.0 sec. after the Main Motor (M1) has started turning is 19% or more (1.41 V or less).
Remedy: 1 Check to see if developer is available. 2 Check the ATDC Sensor connectors for proper connection and correct as necessary. 3 Change UN1. 4 Run ?gATDC Auto Adjust 5 Change PWB-A 6 Change PU1.