Ricoh D009 Service Manual page 234

SC Tables: SC2xx
The Copy Data Security Unit card is installed, but it is not the correct
type for the machine.
FGATE ON error
The FGATE signal does not assert within the prescribed time. (The BICU
230 D
generates the FGATE signal and sends it to the LD unit when the registration
sensor switches on.)
FGATE OFF error
The FGATE signal does not assert within the prescribed time. (The BICU
generates the FGATE signal and sends it to the LD unit when the registration
231 D
sensor switches on.)
BICU defective
BICU, Controller board harness loose or broken
Controller board defective.
LD error
The IPU detected a problem at the LD unit.
240 C
Worn-out LD
Disconnected or broken harness of the LD.
D009/D011/D012/D013 4-8 SM