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IRECTION FQ091019, REVISION 2 VIVID Q N SERVICE MANUAL
7-24 Section 7-4 - Performing Front End (FE) Diagnostics
Section 7-4
Performing Front End (FE) Diagnostics
NOTE: When performing Front End Diagnostic tests, it is strongly recommended to start with the Full
System Test (FE and BEP) especially if the system shows signs of an intermittent problem.
(For details, see "Full System Test (FE and BEP)" on page 7-20).
The Front End diagnostic tests can be initiated manually and may be performed in any order. However,
due to the functional dependencies between each of the Front End boards, it is recommended to
perform the tests on the boards in the following order:
1.) RFI board
2.) TR32 boards
3.) PM board
Performing the tests in the proper sequence will help to derive the correct conclusions regarding the
source of the problem.
As described in this section, the testing sequence can be paused and restarted at any stage, providing
a quick and easy method of reviewing any detected faults. For instructions on performing a specific test,
refer to the relevant test in the appropriate sub-sections:
• Calibration Tests, as described in the Calibration Tests section, on page 7-25.
• RFI Diagnostic Tests, as described in the Radio Frequency Interface (RFI) Diagnostic Tests
section, on page 7-31.
• TR 32 Diagnostic Tests, as described in the TR 32 Diagnostic Tests section, on page 7-46.
• Probe & MUX Diagnostic Tests, as described in the Probe and MUX Diagnostic Tests
section, on page 7-61.
NOTE: If the system must be re-booted, do so. Continue testing from the point at which you were
required to reboot. If a failure occurs, re-boot the system and test again to verify the outcome
of the test.
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