Figure 7: Module isolation troubleshooting procedure
Instrument self tests
The instrument runs self test diagnostics during every power on. The power on self tests ensure that the hardware and software are
functionally working. The tests provide limited diagnostic information, and provide no performance information.
If the instrument detects errors during power on, a pop-up message indicates that a failure has occurred. To display the Self test menu and
results, select Utility > Self Test. Select a test mode and run the self tests. If you continue to get errors on one or more tests, you will need
to return the instrument to your nearest Tektronix Service Center for repair.
Software updates
To update the application software:
1. Go to www.tek.com/product-support.
2. Enter a model number in the Enter Product or Product Series Name field and click Go.
3. Click the Software tab.
4. On the oscilloscope, tap Help > About.
5. Compare the version number of the installed software to the version on the web:
a. If the version number on the oscilloscope is the same as the version on the web, you have the latest version. You do not need to
install new software. Exit this procedure.
b. If the version number on the oscilloscope is a lower number than the version on the web, you can download and install new
software. Continue with the rest of this procedure.
6. Select the highest-numbered version.
7. Click Download File to start the download.
Maintenance
3 Series MDO Mixed Domain Oscilloscope Service Manual
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