Ricoh G179 Service Manual page 171

Disconnected cable from the laser synchronizing detection unit or
defective connection
Defective laser synchronizing detector
Defective LD board
Defective BCU
FGATE ON error
The FGATE signal does not assert within the prescribed time. (The BCU
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 BCU
generates the FGATE signal and sends it to the LD unit when the registration
231 D
sensor switches on.)
BCU defective
BCU, 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.
SM
CÓPIA NÃO CONTROLADA
4-5
CÓPIA NÃO CONTROLADA
SC Tables: SC2xx
G179