Ricoh D127 Field Service Manual page 163

No.
Definition
Polygon motor error: XSCRDY signal error
204 B
Detecting XSCRDY signal "H" (Inactive)
while writing.
LD synchro-detection error
NOT output certain syncro-detection
220 B
signal within 200ms after LD lighting in
steady-rotation.
FGATE: Fail to switch "ON"
230 B
NOT switching FGATE signal on within
one second after writing start-timing.
FGATE: Fail to switch "OFF"
231 B
NOT switching FGATE signal off within
nine seconds after writing end-timing.
Symptom Possible Cause
• Harness and the polygon motor
driver.
• Defective the polygon motor or the
polygon motor driver.
• Bad connection or disconnection
between the I/F
• Bad connection or disconnection
between the I/F harness and the
syncro-detection Unit.
• Defective the syncro-detection
• NOT the beam going into the photo
detector
• Defective the GAVD related parts,
the LD driver, the LDB, the BICU
• Defective the GAVD, PCI bridge
ASIC
• BICU, the Controller board wrong or
bad connection
• Defective the harness between the
BICU to the LDB
• BICU, the Controller board wrong or
bad connection
• Defective the harness between the
BICU to the LDB
• Defective the GAVD, PCI bridge
ASIC
SC Tables
161