Dell 3010CN Service Manual page 59

Sensor name (Diag. Code)
OHP (Transparency)
Sensor (DI-55)
NOTE: Prepare the plain paper and the transparency sheet.
1) Turn on the power and enter the Diagnostic Mode.
2) Execute the DI-55.
3) Open the Inner Rear Cover.
4) Check the sensor.
OHP (Transparency) Sensor
5) Press the "Cancel" key to stop the test.
6) Close the Inner Cover.
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Chapter 2 Operation of Diag.
Confirmation procedure
Operator Panel (Transparency)
Operator Panel (Paper)
Transparency or Paper
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