Registration Sensor Failure - Xerox DOCUPRINT N17 Service Manual

7.4.11 Registration Sensor Failure

1 There is +5VDC between P/J123-3 and P/J123-2.
Y: Go to step 3.
N: Go to step 2.
2 There is +5VDC between P/J17-4 and P/J17-5.
Y: Go to step 3.
N: Go to RAP 7.4.5 Low Voltage Power Supply (LVPS) Assembly Failure (+5VDC).
3 The voltage measured between P/J123-1 and P/J123-2 is at a low logic level (0VDC) when
paper is at the sensor and at a high logic level (+5VDC) when no paper is at the sensor.
Y: Go to step 4.
N: Replace the Registration Sensor.
4 The voltage measured between P/J17-6 and P/J17-5 is at a low logic level (0VDC) when paper is
at the sensor and at a high logic level (+5VDC) when no paper is at the sensor.
Y: Go to step 5.
N: Replace the Sensor Harness.
5 The voltage measured between P/J11-2 and P/J17-5 is 0VDC when there is paper at the sensor.
Y: Go to step 6.
N: Replace the LVPS.
6 The voltage measured between P/J13-12 and P/J17-5 is 0VDC when there is paper at the
sensor.
Y: Replace the Print Engine Controller.
N: Replace the Wire Harness between P/J11 and P/J13.
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7-53 Repair Analysis Procedures (RAPs)