Ricoh D129 - Page 496

Service Call Conditions
SM 6-7 D129/D130
Trouble-
shooting
230 D
FGATE ON error
The FGATE signal does not assert within the prescribed time. (The IPU
generates the FGATE signal and sends it to the LD unit when the registration
sensor switches on.)
231 D
FGATE OFF error
The FGATE signal does not assert within the prescribed time. (The IPU
generates the FGATE signal and sends it to the LD unit when the registration
sensor switches on.)
 IPU defective
 IPU, Controller board harness loose or broken
 Controller board defective.
240 C
LD error
The IPU detected a problem at the LD unit.
 Worn-out LD
 Disconnected or broken harness of the LD.
270 D
GAVD communication error
 The I2C bus device ID is not identified during initialization.
 A device-status error occurs during I2C bus communication.
 The I2C bus communication is not established due to an error other than
a buffer shortage.
 Loose connection
 Defective IPU
 Defective LD controller board