Ricoh G-P3 Service Manual page 97

4. Troubleshooting
SC
[Level]
detecting the main scan
magnification.
Laser Synchronizing Detection Error: LDB of the leading edge [K]
The laser synchronizing
220 detection signal for LDB [K] of
4
the leading edge is not output
[D]
for two seconds after LDB unit
turns on while the polygon
motor is rotating normally.
Leading edge laser detection error: [Y]
The laser synchronizing
detection signal for LDB [Y] of
222
the leading edge is not output
[D]
for two seconds after LDB unit
turns on while the polygon
motor is rotating normally.
Leading edge laser detection error: [M]
The laser synchronizing
detection signal for LDB [M] of
224
the leading edge is not output
[D]
for two seconds after LDB unit
turns on while the polygon
motor is rotating normally.
Leading edge laser detection error: [C]
The laser synchronizing
226
detection signal for LDB [C] of
[D]
the leading edge is not output
for two seconds after LDB unit
96
Symptom
• Disconnected cable from the laser synchronizing
• Defective laser synchronizing detector
• Defective LDB
• Defective EGB
1. Check the connectors.
2. Replace the laser-synchronizing detector.
3. Replace the LDB.
4. Replace the EGB.
Same as SC 220
Same as SC 220
Same as SC 220
Possible Cause/Required Action
detection unit or defective connection