Ricoh M281 Series Service Manual page 559

Rev. 02/09/2017
[A]: LEDs on the controller board
Check the condition (lit, off, blinking) of the LED on the controller.
Normal situation: POSTCODE LED 8 and BIOS LED blinking once every second.
No.
LED For CPU
- POSTCODE 8 and BIOS LED blink when the CPU is operating normally.
- POSTCODE 8 and BIOS LED are lit or off when there is a problem with the CPU.
Confirmation procedure:
1. Remove the FCU unit. (Fax unit)
2. Remove the I/F slot.
3. Turn ON the machine and check the LED from the rear-right side of the machine.
SM
Note
6-121
Troubleshooting Guide
D255/D256/M281/M282