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ART NUMBER FN091065, REVISION 2 VS5 N AND VS6 N SERVICE MANUAL
7-66 Section 7-4 - Performing Front End (FE) Diagnostics
PRELIMINARY
7-4-6 Probe Select Board Diagnostic Tests (cont’d)
7-4-6-2-2 ACW Matrix Test
NOTE: For a description of this test, refer to the information in - "ACW Matrix Test" on page 7-14.
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 ACW Matrix Test in the list of ACW tests available for
selection from the Diagnostic Test Tree (see Figure 7-38 "ACW Matrix Test" on page 7-66) and
press Set. The ACW Matrix Test name is displayed under Execute; the relevant system
components to be tested are highlighted light blue in the Schematic View (PIB & PSB), 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.) 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.
4.) Trackball to the Start button and press Set.
In order to access an individual board test, it is necessary to insert the service dongle from system boot-
up and enter the Service Password.
It is necessary to disable the Loop option where it should not be used.
After performing this test, you must re-boot the system and perform the DC Offset Calibration procedure
as described in “DC Offset Calibration” on page 7-27.
Figure 7-38 ACW Matrix Test
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