Ricoh M281 Series Service Manual page 558

Troubleshooting Guide
Flowchart to determine parts to replace when SC672 occurs.
Parts
USB cable
Operation panel
Controller
Flowchart to determine which parts to replace when no display on Operation Panel.
Parts
USB cable
Operation Panel
BiCU
Controller
D255/D256/M281/M282
How to determine the cause
LED on controller blinks once every second
LED on controller blinks once every second
LEDs on controller blink constantly
How to determine the cause
LED on controller blinks once every second
LED on controller blinks once every second
Fuse 1 on the BiCU
LED on controller does not blink
6-120
Rev. 02/09/2017
SM