Description: Low pressure roller temperature Reheating has been done and the motor is not running, or 60 seconds have passed after the main motor halted. Then, the roller temperature has been below 130ºC for 60 seconds
Description: Hot roller thermistor error The roller temperature has been 0°C for five seconds.
Causes: Hot roller thermistor, MCU
Code: 25
Description: High hot roller temperature The roller temperature has been 190°C or higher for three seconds.
Causes: Hot roller thermistor, MCU
Code: 26
Description: Low hot roller temperature Reheat has been done and the motor is not running, or 60 seconds have passed after main motor halt. Then, the roller temperature has been below 130ºC for 60 seconds
Causes: Hot roller thermistor, MCU, hot roller lamp connector
Code: 28
Description: Paper transfer positive bias release error The PWM duty has been 50% or higher for 240 ms. Or, the paper transfer roller clutch does not operate.
Causes: There is a disconnection in the paper transfer bias supply circuit. (Deformation of terminals or springs, dirty bearings) When the contact/separation lever is normal: Bad transfer roller position sensor, harness, or MCU When the contact/separation lever is faulty: Bad transfer roller clutch or MCU
Code: 29
Description: Primary transfer bias open The PWM duty has been 50% or higher for 240 ms.
Causes: There is a disconnection in the primary transfer bias supply circuit. (Dirty or deformed electrodes)