Gestetner B070 Service Manual page 336

SERVICE CALL CONDITIONS
SC351: ID Sensor Error 2
Definition [D]
One of the following conditions were detected when checking the ID sensor
pattern:
1) Vsg ≤ 2.5 V
2) Vsg= 0 V
3) The ID sensor output voltage = 5.0 V and PWM signal input to ID sensor = 0
Vsg is the ID sensor output after checking the erased drum surface
NOTE: 1) Vsp is the ID sensor output after checking the ID sensor pattern image.
2) The SC code is not displayed; only the logging data is incremented.
5) Regarding toner supply, if an abnormal condition is detected, then only
the toner density sensor output is used, without an updated Vref
setting.
6) After an abnormal condition is detected, SP3103 (ID Sensor Output
Display) shows Vsp = Vsg (or 5.0V).
Possible Causes
• ID sensor defective
• ID sensor harness defective
• ID sensor connector defective
• IOB defective
• LD unit defective
• BCU defective
• CBG power pack defective
• Dirty ID sensor
B070/B071
CÓPIA NÃO CONTROLADA
4-16
CÓPIA NÃO CONTROLADA
SM