Ricoh M281 Series Service Manual page 486

Service Call 622-691
SC No. Type
SC No. Type
SC665-02 D
D255/D256/M281/M282
Error Name/Error Condition/Major Cause/Solution
There is no DESS module in the machine (models on which
the function is optional).
There is no expanded authentication module in the
machine.
The SD Card or the file of the expanded authentication
module is broken
Set a working SD Card/expanded authentication file.
Install the DESS module.
In the SSP Mode, set SP5-401-160 to "0".
In the SSP Mode, set SP5-401-161 to "0".
Replace the NVRAM.
Error Name/Error Condition/Major Cause/Solution
BiCU – IOB Connection Error
FFC connection error (connector disconnected) between BiCU
and IOB is detected during the startup operation of the engine
(when the main power is turned on or when the machine returns
from energy save mode)
FFC defective or disconnected
BiCU defective
IOB defective
1. Turn the main power OFF/ON.
2. Reconnect the FFC between BiCU and IOB.
3. Replace the FFC between BiCU and IOB.
4. Replace the BiCU.
5. Replace the IOB.
6-48
Rev. 09/15/2016
SM