SERVICE CALL CONDITIONS
SM 4-23 B234/B235/B236/D101/D102/D103
Trouble-
shooting
ID Sensor Error 3: ID Sensor Pattern Error
SC402 C
One of the following ID sensor
output voltages was detected
when checking the covered are
of the ID sensor pattern:
• Vsp ≥ 2.5 V
• Vsp = 0 V
• ID sensor harness, connector is loose,
broken, or defective
• ID sensor dirty
• ID sensor defective
• IOB defective
• LD Unit defective
• BCU defective
• Development power pack defective
NOTE
• The SC code is not displayed; only the logging data is incremented.
• When this SC is issued, only the toner density sensor output (Vt) (even for jobs
less than 10 copies) and Vref is not updated.
• After an abnormal condition is detected, SP3103 (ID Sensor Output Display)
shows "Vsp = Vsg = 0" (or "5.0V").
• If the next ID sensor pattern check is normal, this restores normal operation.
ID Sensor Error 4: ID Sensor Pattern Not Detected
SC406 C
At the ID sensor pattern check of
the covered area of the ID
sensor pattern, the value of the
edge voltage was not 2.5 V for
1.5 seconds.
• ID sensor harness, connector is loose,
broken, or defective
• ID sensor dirty
• ID sensor defective
• IOB defective
• LD Unit defective
• BCU defective
• Development power pack defective
NOTE
• The SC code is not displayed; only the logging data is incremented.
• When this SC is issued, only the toner density sensor output (Vt) (even for jobs
less than 10 copies) and Vref is not updated.
• After an abnormal condition is detected, SP3103 (ID Sensor Output Display)
shows "Vsp = Vsg = 0" (or "5.0V").
• If the next ID sensor pattern check is normal, this restores normal operation.
Drum Potential Sensor Error 1: Vd Adjustment Error
SC420 C
When Vd (drum potential of the latent ID
sensor pattern before exposure) was
adjusted during auto process control:
After 5 adjustments by Vg (voltage output
of the charge corona unit) Vd failed to
attain the value of SP2001 006 (total
corona voltage for Photo Mode at normal
speed) or Vd failed to attain the value of
SP2001 012 for the CPM down mode (but
not Photo Mode).
• Drum potential sensor harness,
connector is loose, broken,
defective
• Drum potential sensor dirty
• Drum potential sensor defective
• Drum connector, harness loose,
broken, defective
• Development power pack
defective
• BCU defective
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