Description: Abnormally low fuser temperature
• The temperature detected by the thermistor remains lower than a predetermined value for a predetermined period of time.
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: 0520
Description: Abnormally high fuser temperature
• The temperature detected by the thermistor is a predetermined value or higher for a predetermined period of time.
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: 0F51
Description: Waste toner full sensor trouble
• Waste toner full sensor detects abnormal situation.
Remedy: 1 Check the PRCB connector for proper connection and correct as necessary. 2 PS7 sensor check. 3 Change PRCB.
Code: 13C0
Description: Printer control board malfunction
• Communications with the M/C expansion IO G/A (IC on the printer control board) are not properly carried out.
Remedy: 1 Check the PRCB connector for proper connection and correct as necessary. 2 Change PRCB.
Code: 13DD
Description: Backup data error
• The printer determines that EEPROM is yet to be mounted when the main power switch is turned ON.
Remedy: 1 Confirm mounting status of EEPROM on the printer control board, and make modification if necessary. 2 Change PRCB.
Code: 13E2
Description: Flash ROM write error
• Flash ROM writing is found faulty during a check.
Remedy: 1 Check the cable and connector for proper connection and correct as necessary. 2 Change PRCB. 3 Change MFPB.