Troubleshooting
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
6-75
Instrument Diagnostics. If the instrument passes all the CheckIt Utilities tests, the
primary tree calls for you to run the instrument Diagnostics. The instrument
Diagnostics are a comprehensive software test that checks the functionality of the
instrument. If the instrument Diagnostics test fails, the instrument is defective.
To run the instrument Diagnostics, do the following steps:
1. Turn off all other applications.
2. From the menu bar, touch Utilities and then select Instrument Diagnostics.
The instrument has two levels of internal diagnostics that focus on verifying,
adjusting, and if need be, isolating faulty modules.
Both levels of internal diagnostics report any bad modules. If a bad module is
found, replace the module.
The two levels of diagnostics are the short confidence set and the extended set
that tests the instrument circuitry in depth and takes more time. At power on, the
instrument automatically executes the short set. The extended set is optional and
is executed by using the following procedure:
Prerequisites: Power on the instrument and allow a 20 minute warm-up before
doing this procedure.
1. Display the System diagnostics menu:
a. From the menu bar, touch Utilities and then select Instrument
Diagnostics.
Software Updates
Software updates are easy to do. Simply install the firmware CD in your
instrument and follow the displayed instructions or the instructions that
accompany the CD.
If you want to order a software update, contact your Tektronix service center.
After Repair
After removal and replacement of a module due to electrical failure, you must
perform the adjustment or software update as indicated in Table 6--7.
Diagnostics
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