Flowchart To Determine Parts To Replace When No Display On Operation Panel; [A]: Leds On The Controller Board - Ricoh MP C2504 Field Service Manual

Flowchart to determine parts to replace when no display on operation panel

Parts
USB cable
Operation panel
IPU
CTL
Memory

[A]: LEDs on the controller board

Check the condition (lit, off, blinking) of the LED on the CTL.
LED /POSTCODE AREA on the CTL
How to determine the cause
LED on CTL blinks for 1 second
LED on CTL blinks for 1 second
Fuse 3 on the IPU
LED on CTL does not blink
LED on CTL does not blink
Troubleshooting for SC Errors
981