TDS 340A, TDS 360 & TDS 380 Technical Reference
6–33
Troubleshooting
This section contains information and procedures designed to help you isolate
faulty modules in the oscilloscope. If you need to replace a module, use the
Removal and Replacement procedures immediately preceding this section.
NOTE. These procedures will isolate a fault to the module level. If you wish to
isolate a faulty component, use the theory of operation, schematics, board
dollies, and grid locator charts provided elsewhere in this manual.
Onboard Diagnostics
The onboard diagnostics focus on verifying, calibrating, and isolating faulty
modules. Use the following procedure to activate the diagnostics.
1. Power up the oscilloscope and allow a 20 minute warm-up period.
2. Press the front panel button UTILITY.
3. Repeatedly press the main menu button System until Diag is highlighted in
the pop-up menu. This calls up the diagnostics menu, shown in Figure 6–19.
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