GE FQ000040, Руководство по обслуживанию

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ANUAL
7-28 Section 7-4 - Performing Front End (FE) Diagnostics
7-4-2-2 DC Offset Verification
NOTE: For a description of this test, refer to the information provided in "DC Offset Verification" on page
7-11 .
NOTE: When performing this test, no probe should be connected to the system and nothing should be
touching the probe connectors!
1.) In the Diagnostic Test window, trackball to DC Offset Verification in the list of tests available for
selection from the Diagnostic Test Tree (see Figure 7-9 below ) and press Set . The DC Offset
Verification name is displayed under Execute; the relevant system components to be tested are
highlighted light blue in the Schematic View (PM, TR32 and RFI boards), as shown below:
2.) As indicated in the Special Instructions area, disconnect any probes currently connected to the
system and make sure that nothing is touching the probe connectors.
3.) Under the Special Instructions area, activate the Loops checkbox
and select the required number of Loops from the combo box.
4.) Adjacent to On Fail, select either Stop or Continue , as required.
Stopping on failure enables you to review a failed test, the moment it fails. Alternatively, you may
prefer testing to continue on failure and later you may review the report.
5.) Trackball to the Start button and press Set .
The DC Offset Verification Test commences. While the test proceeds, the name of the test currently
in progress (DC Offset Verification) is displayed in the
Execute field and the current Loop # and
specific test are shown below. The messages Init Done and Please Wait are displayed beside the
progress bar in the Status area.
Figure 7-9 DC Offset Verification Test