Generic Sensor Rap - Xerox 8825 Service Manual

Generic Sensor RAP

Initial Actions
NOTE: This procedure can be used to check any sensor. Due to the generic format of this RAP
there will be no specific ADJ, PL or Diagnostic codes identified.
• Ensure that the Sensor is not blocked.
• Clean the Sensor surfaces before using this procedure.
Procedure
( Figure 1): Enter DIAGNOSTICS (General Procedures). Enter code [xxxx to test the Sensor
(Refer to appropriate BSD for the specific code). Block and unblock the Sensor. The Display
toggles between [1] and [0].
Y N
Block the sensor. There is +5 ± 0.3 VDC at J1 pin 3 of the sensor.
Y N
Check the wire at J1/P1 pin 3 for an open circuit.
If the wire is good, replace the main PWB.
There is +1.4 ± 0.2 VDC at J1/P1 pin 1 of the sensor.
Y N
Check the wire at J1/P1 pin 1 for an open circuit.
If the wire is good, replace the Sensor before replacing the main PWB.
Unblock the sensor. There is approximately 0 VDC at J1 pin 3 of the sensor.
Y N
Replace the sensor.
Replace the main PWB.
The Sensor and its circuit appear to be operating normally, check the adjustment or alignment
of the Sensor.
Status Indicator RAPs
Generic Sensor RAP
Figure 1 Sensor (Generic)
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