Troubleshooting
6-- 58
TDS7104 & TDS7054 Service Manual
2. Disable the busses and disconnect the PPC board by installing J840 and J841.
3. If the system boots (It will only boot to Windows, the oscilloscope applica-
tion will not run) to the external NLX video port, replace the PPC board.
If the oscilloscope boots into Windows, but the oscilloscope application does not
work (the DPO Man graphic is displayed), check the following:
1. The application software.
2. The Acquisition board.
3. The PPC board.
4. The Riser board (try removing and reinstalling the Riser board).
5. Did someone exit the application using the Task Manager and then try to
reenter the application without rebooting?
6. Set Diagnostic Selection DIP switch 2 to off (see Dip Switch Controls on
page 6--68 for more information), reboot; check the Diagnostic LED (see
page 6--69 for more information).
7. If the relays click, the acquisition is running.
8. Check the desktop properties (right click on the desktop and select Proper-
ties). On the Settings tab, 16 bit is required. Video merge will not work with
other settings. If you change the setting, reboot.
9. On the Settings tab of the desktop properties, select Advanced and then the
Performance tab. Hardware Acceleration must be set to Full for video merge
to work. If you change the setting, reboot.
PPC and NLX PC Diagnostics
The primary diagnostics for the oscilloscope are the power-on diagnostics, the
QA+Win32 diagnostics, and the oscilloscope diagnostics. Procedures for running
these diagnostics are described below.
The power-on diagnostics check the basic functionality of the oscilloscope at
every power on. If any failures occur at power on, the screen displays the
calibration and diagnostics property page. Table 6-- 6 lists a subset of the power
on tests. Use the results of the tests to help you isolate problems to system
modules.
If the Oscilloscope
Application Does Not
Work
Power-On Diagnostics
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