Remedy: 1 Reset the main power switch The FAX PWB does not operate properly Turn off the power switch and pull out the power plug. After passing 5s, reattach the FAX PWB and reinsert the power plug. Then, turn on the power switch 2 Upgrading the firmware Something wrong with the firmware Re-installing the FAX firmware 3 Replacing the FAX PWB The FAX PWB is faulty Replace FAX PWB
Code: C0070
Description: FAX PWB incompatible detection error
Remedy: 1 Checking the FAX PWB The incompatible FAX PWB is installed Install the FAX PWB for the applicable model 2 Updating the firmware Something wrong with the firmware Re-installing the FAX firmware 3 Replace Main PWB The main PWB is faulty Replace the main PWB
Code: C0100
Description: Backup memory device error
Remedy: 1 Reset the main power switch The flash memory does not drive properly Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch 2 Checking the main PWB Connector or FFC is not secured. Wire, FCC or board is defected. Clean up wire terminal on the main PWB and insert the wire connector and connect FFC terminal again Replace or repair wire if problem is observed. Replace the main PWB if the problem is not fixed.
Code: C0120
Description: MAC address data error
Remedy: 1 Reset the main power switch The flash memory does not work properly Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch 2 Checking the MAC address The MAC address is incorrect Replace the main PWB when the MAC address is not indicated on the network status page
Code: C0130
Description: Backup memory reading/writing error
Remedy: 1 Reset the main power switch The flash memory does not work properly Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch 2 Checking the main PWB Connector or FFC is not secured. Wire, FCC or board is defected. Clean up wire terminal on the main PWB and insert the wire connector and connect FFC terminal again Replace or repair wire if problem is observed. Replace the main PWB
Remedy: 1 Reset the main power switch EEPROM on the engine PWB does not work properly. Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch 2 Checking the EEPROM on Engine PWB The EEPROM is not installed properly Re-install the EEPROM on the engine PWB 3 Replacing the EEPROM The EEPROM is faulty Replace the EEPROM on the engine PWB and execute U169 After that, compare the setting value of the maintenance report output by U000 beforehand and the setting value of the maintenance report output after replacing the EEPROM, and change the setting value if it is different (Target maintenance mode: U053, U100, U101, U106, U140, U161, U464, U252, U034, U065, U066, U067) Then next, execute the following maintenance mode in order U119 (35 ppm model and faster) > U411 > U469[Auto] > U140[AC Calib] > U140[Calibration] > U412[Normal Mode](35 ppm model and faster) > U464[Calib](35 ppm model and faster) > U410 > U155[Calibration](Necessary to have an empty waste toner box) 4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB