Tektronix WFM8200, Руководство по обслуживанию

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General Maintenance
3. If the Diagnostic Log screen reports the failure Audio DSP Self Test-dsp0 ,
perform the following procedure:
a. Check to see if the audio board is recognized by the main board by
pressing the
Main button, then CONFIG and selecting Utilities > View
HW/SW Version .
b. If there is an audio option listed, suspect the audio board; otherwise,
proceed to step c.
c. Probe pins E15 through E22 and pins D16, 17, 18, and C17 on the audio
board connector J641, and verify that the signals on all pins are toggling.
If any signals are not toggling, replace the main board.
d. Probe pins C15, C16, and C18 on connector J641 during boot up and
verify that the signals toggle. If they are not toggling, suspect the main
board.
e. Probe pin B21 on audio board connector J641 during the boot sequence.
If the signal does not toggle, replace the audio board; otherwise, replace
the main board.
f. If all of these steps pass, replace the audio board.
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