HP 750 - Manual (Page 169)

Troubleshooting C4705-90000 8-51
30. Window Sensor
The purpose of this test is to verify the operation of the window sensor.
Perform the window sensor test as follows:
1 In the Service Tests submenu, scroll to 30 Window Sensor" and press Enter.
SERVICE TESTS
30 Window sensor
2 If the window is lowered then the Cover Down / Stop..." message is displayed on the
frontĆpanel. Press the Down Arrow button to stop the test.
3 If the window is raised then the Cover Up / Stop..." message is displayed on the
frontĆpanel. Press the Down Arrow button to stop the test.
If the window is raised when the Cover Down / Stop..." message is displayed on the
frontĆpanel, then the test has failed.
If the window is lowered when the Cover Up / Stop..." message is displayed on the
frontĆpanel, then the test has failed.
If the test fails, try
replacing the following components:
1 Window sensor ' page 6Ć20.
2 FrontĆpanel assembly ' page 6Ć18.
3 Main PCA ' page 6Ć9.
Only replace one component at a time and perform the “Window Sensor” test again before
replacing another component. Using this procedure you will be able to determine exactly which
component failed.