Code :

Code: SC557
Description: Zero cross Frequency Over
Causes: Power supply frequency is unstable.
Remedy: No error message will be issued on this SC. A log of this SC will be logged in the SOM service mode SC

Code: SC559
Description: Fusing Unit Third Jam Error (Fatal Error) (c3)
Causes: The exit sensor failed to detect the leading edge of the paper within the prescribed time and triggered a jam alert. • After this error has occurred three times, the machine will shut down automatically and cannot be re-started until the machine has been serviced by a service technician.
Remedy: • Check the paper transport path for any physical obstructions (paper scraps, etc.) • Make sure the fusing unit has been installed correctly

Code: SC560
Description: Low input voltage (-21 and -27 model only)
Causes: When the input voltage is extremely low (Lower than 140V).
Remedy: • Can be reset by turning the power OFF/ON. • Use high quality power supply. • Execute "Fuser SC Reset" after solving a fusing unit problem. Otherwise, the machine will continue to issue this SC code and cannot be operated.

Code: SC670
Description: Engine Communication Error (c9)
Causes: The engine failed to communicate with the firmware. Firmware update failure.
Remedy: • Cycle the machine off/on and update the firmware again • Replace Main board

Code: SC688
Description: No CTL_PRREQ_N Signal (c4)
Causes: Paper failed to feed after the machine reached the reload temperature because the main board did not issue a PRREQ signal.
Remedy: • Check all Main board harness connection • Replace Main board

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