Ricoh D065 Service Manual page 460

Potential sensor calibration error 7
During drum potential sensor calibration, when VL is adjusted, the pattern
C
surface potential VL pattern is not within range 0V to -400V. (VL is the
potential after exposing a white pattern.)
Potential sensor defective
317
Potential sensor harness disconnected
Potential sensor connector defective or disconnected
- IOB defective
OPC connector defective
Charge corona power pack defective
Development power pack defective
TD sensor output error
TD sensor output voltage (Vt), measured during each copy cycle, is
C
detected 10 times at one of the following levels:
Vt = 0.5 volts or lower
Vt = 4.0 volts or higher
340
TD sensor defective
TD sensor harness disconnected
TD sensor connector disconnected or defective
- IOB defective
Toner bottle motor defective
Note: When the TD sensor is defective, the toner supply is controlled using
pixel count and the ID sensor.
SM Appendix
Service Call Conditions
3-15 D062/D063/D065/D066