Ricoh D131 - Page 489

SC300: Image Development 1
D131/D132/D133 2-22 SM Appendix
SC380-51
C
Potential sensor calibration (VL)
During drum potential sensor calibration, when VL is adjusted, the
pattern surface potential VL pattern is not within range 0V to -
400V.
(VL is the potential after exposing a white pattern.)
-
 Potential sensor defective
 Potential sensor harness disconnected
 Potential sensor connector defective or disconnected
 IOB defective
 OPC connector defective
 Charge corona power pack defective
 Development power pack defective
SC396-01 D
Main motor error
The main motor lock signal remains low for 2 seconds while the main
motor is on.
 Drive mechanism overloaded
 Motor driver board defective