Remedy: 1 Check the cable and connector for proper connection and correct as necessary. 2 Change PH unit. 3 Change PRCB.
Code: 0310
Description: Laser malfunction
Causes: PH Unit Printer control board (PRCB)
Remedy: 1 Check the cable and connector for proper connection and correct as necessary. 2 Change PH unit. 3 Change PRCB.
Code: 0500
Description: Fuser warm-up failure
Causes: Fuser unit Printer control board (PRCB) DC power supply (DCPU)
Remedy: 1 Change fuser unit. 2 1. Main switch is turned ON. 2. Open the top cover. 3. Press the following keys in this order. Clear key Rotate Toner key Clear key Rotate Toner key. 4. Main switch is turned OFF/ON. 3 Change PRCB. 4 Change DCPU.
Code: 0502
Description: Thermistor open-circuit failure
Causes: Fuser unit Printer control board (PRCB) DC power supply (DCPU)
Remedy: 1 Check the fuser unit for correct installation (whether it is secured in position). 2 Check the fuser unit, DCPU, and PRCB for proper connection and correct as necessary. 3 Change fuser unit. 4 Change PRCB. 5 Change DCPU.
Code: 0503
Description: Thermistor resistance failure
Causes: Fuser unit Printer control board (PRCB) DC power supply (DCPU)
Remedy: 1 Change fuser unit. 2 1. Main switch is turned ON. 2. Open the top cover. 3. Press the following keys in this order. Clear key Rotate Toner key Clear key Rotate Toner key. 4. Main switch is turned OFF/ON. 3 Change PRCB. 4 Change DCPU.
Code: 0510
Description: Abnormally low fuser temperature
Causes: Fuser unit Printer control board (PRCB) DC power supply (DCPU)
Remedy: 1 Check the fuser unit for correct installation (whether it is secured in position). 2 Check the fuser unit, DCPU, and PRCB for proper connection and correct as necessary. 3 Change fuser unit. 4 Change PRCB. 5 Change DCPU.