Tektronix WFM8200, Руководство по обслуживанию

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General Maintenance
4. If the Diagnostics log reports Audio DSP Self Test-dsp1 , perform the
following procedure:
a. Check to see if surround display is functioning correctly by doing the
following.
i. Press and hold the Audio button.
ii. In the audio menu, select Aux Display > Surround Display .
iii. Press the Audio Input Menu button, then select Audio Input > AES
A .
iv. Connect an AES test tone generator to the AES A IN 1, 2 connector.
b. If there is nothing displayed on the surround display, proceed to step c;
otherwise, replace the audio board.
c. Probe pins E15 through E22 and pins D16, 17, 18, and C17 on 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 C19 on connector J641 during the boot
sequence, and verify that the signals on the pins toggle. If they do not
toggle, suspect the main board.
e. Probe pin B22 on audio board connector J641. If the signal on the pin does
not toggle, replace the audio board; otherwise replace the main board.
f. If all of these steps pass, replace the audio board.
5. If the Power-Up Diagnostics screen reports Audio DSP Self Test - X , where
X is any other number or string, replace the audio board.
Examine Power-Up
Diagnostics Results in
the Diagnostic Log
To examine the Power-up Diagnostics results, press the CONFIG button, then
select Utilities > View Diagnostic Log .
Each power on is indicated by a boot time stamp, followed by a list of power on
tests. If any failures are indicted then refer to the action as noted above.
WFM8200 and WFM8300 Waveform Monitors Service Manual 4–17