Code :

Code: 722-71
Description: 1000-Sheet Finisher Error. Shift tray motor error • The shift roller HP sensor does not detect the home position of the upper tray within the specified number of pulses after the upper tray has moved to its home position. • The shift roller HP sensor does not turn off within the specified number of pulses after the upper tray has moved from its home position. The 1st detection failure issues a jam error, and the 2nd failure issues this SC code.
Causes: • Shift tray motor disconnected, defective • Shift tray motor harness is loose or broken • Shift tray HP sensor disconnected, defective • Shift tray motor overloaded due to obstruction (jammed paper, paper scraps, etc.)
Remedy:

Code: 770
Description: Shift motor error The shift motor HP sensor does not detect any change for 1.86 seconds after the shift motor has turned on at power on or during its operation.
Causes: • Defective shift motor • Defective shift motor HP sensor
Remedy:

Code: 791
Description: Bridge unit error The machine recognizes the finisher, but does not recognize the bridge unit.
Causes: • Bridge unit is not installed • Bridge unit is installed incorrectly • Defective bridge unit
Remedy:

Code: 792
Description: Finisher error The machine does not recognize the bridge unit finisher, but recognizes the bridge unit.
Causes: • Poor finisher connector connections • Finisher is not installed although the bridge unit is installed on the machine • Defective finisher
Remedy:

Code: 816
Description: Energy save I/O sub-system error Energy saver sub-system detects an error.
Causes: • Defective controller board
Remedy:

Code: 817
Description: Monitor Error This is a file detection and electronic file signature check error when the boot loader attempts to read the self-diagnostic module, system kernel, or root system files from the OS Flash ROM, or the items on the SD card in the controller slot are false or corrupted.
Causes: • OS Flash ROM data defective; change the controller firmware • SD card data defective; use another SD card
Remedy:

Code: 818
Description: Watchdog timer error The watchdog timer detect the error even if system processing normally.
Causes: • System program defective • Controller board defective • Optional board defective
Remedy:

Code: 819
Description: Fatal kernel error Due to a control error, a RAM overflow occurred during system processing. One of the following messages was displayed on the operation panel.
Causes: • System program defective • Controller board defective • Optional board defective • Replace controller firmware
Remedy: