Gestetner B070 Service Manual page 337

SC352: ID Sensor Error 3
Definition [D]
At the ID sensor pattern check, the ID sensor pattern edge voltage is not detected
at 2.5 V for 1.5 seconds.
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.
3) Regarding toner supply, if an abnormal condition is detected, then only
the toner density sensor output is used, without an updated Vref
setting.
4) 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
SC353: ID Sensor Error 4 (Adjustment Error)
Definition [D]
One of the following ID sensor output voltages is detected at ID sensor
initialization.
• VSG < 4.0 V when the maximum PWM input (255) is applied to the ID sensor.
• VSG ≥ 4.0 V when the minimum PWM input (0) is applied to the ID sensor.
NOTE: 1) The most recent PWM value is used for control.
2) The values displayed with SP3103 (ID Sensor Output Display) are the
actual values.
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
SM
CÓPIA NÃO CONTROLADA
4-17
CÓPIA NÃO CONTROLADA
SERVICE CALL CONDITIONS
B070/B071