SC400 (Image Processing)

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC440-01	D	High voltage power: Transfer bias output error
		A continuous error signal was detected for 200 ms during transfer positive bias output.
		Hardware related causes: Contact failure Loose, broken, defective connector on the controller side Grounding, open-circuit in the high voltage route Arc discharge due to lack of space The shorted harness on the controller side Engine board malfunction due to signal error HVPS defective Load related causes: Short-circuit Arc discharge due to lack of space Increase in transfer roller impedance (Low-temperature environment, due to dirt ) Open-circuit in the power supply route
		Power cycle the machine to see if the error reoccurs. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power off/on after each step. Re-install the transfer roller. Replace the transfer roller. Reconnect the CN220 connector on engine board (Printer: BCU, MF: SCB). Reconnect the CN800 connector on HVPS. Re-install the HVPS. Replace the HVPS. Replace the engine board (Printer: BCU, MF: SCB). Replace the harnesses on HVPS.
SC440-02	D	High voltage power: Loose connector
		An error signal was detected continuously for 40 ms in standby mode with the front cover closed.
		Loose connector on the controller side Harness defective Engine board malfunction due to signal error HVPS defective
		Power cycle the machine to see if the error reoccurs. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power off/on after each step. Reconnect the CN800 connector on HVPS. Reconnect the CN220 connector on engine board (Printer: BCU, MF: SCB). Replace the HVPS. Replace the engine board (Printer: BCU, MF: SCB). Replace the harnesses on HVPS.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC490-00	D	High voltage power: Charge/development bias output error
		An error signal was detected continuously for 200 ms during charge bias output.
		Hardware related causes: Contact failure Loose, broken, or defective connector on the controller side Grounding, open-circuit in the high voltage route Arc discharge due to lack of space The shorted harness on the controller side Engine board malfunction due to signal error HVPS defective Load related causes: Short-circuit Arc discharge due to lack of space Drum deterioration, or condensation on drum caused by overcurrent Drum condensation, pinhole overcurrent The incorrect gap between the drum and charge roller Overcurrent due to condensation on the drum surface
		Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Re-install the PCDU. Check if there are scratches on the drum surface. If you can see the internal element of the drum (bare metal) on the surface, replace the PCDU. Reconnect the CN220 connector on engine board (Printer: BCU, MF: SCB). Reconnect the CN800 connector on HVPS. Re-install the HVPS. Replace the HVPS. Replace the engine board (Printer: BCU, MF: SCB). Replace the harnesses on HVPS.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC497-00	D	Image creation thermistor (TH5) error
		The output of the image creation thermistor (TH5) is out of the following range. 70°C or more -20°C or less
		Loose, broken, defective connector or harness defective Image creation thermistor (TH5) defective
		Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Reconnect the image creation thermistor (TH5) connector. Replace the image creation thermistor (TH5). Replace the image creation thermistor (TH5) harness. Replace the engine board (Printer: BCU, MF: SCB).