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: SC650
Description: Modem Error
Causes: Modem chip defective.
Remedy: • Replace fax board.
Code: SC669
Description: EEPROM Communication Error (c5)
Causes: A read/write error occurred with the EEPROM on the main board.
Remedy: • Cycle the machine off/on • EEPROM defective, replace main board.
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