Appendix F: User Service
DAS System User Manual
F–19
Power-On Diagnostics
Normally the mainframe and the terminal run their respective diagnostics at
power on. These tests provide basic checks to verify the operating status. Since
the terminal provides the user interface, you should power on the terminal before
powering on the mainframe.
The mainframe runs diagnostics to functionally check the internal components
and operating software. When the power-on diagnostics are successfully
completed, most instrument functions are verified.
NOTE
. Diagnostics normally run at power on unless you specify Execute Custom
in the Diagnostics field in the Boot Option overlay. In this case the diagnostics
will execute on the next power on cycle after meeting the conditions in the
overlay. Refer to Boot Options Overlay on page 3–57 for more information.
Power-on diagnostics take approximately 10 seconds for each module installed
in the mainframe. If any errors occur, you can display the error indication in the
Diagnostics menu. The menu reports the diagnostic results with a PASS or FAIL
indication. If a diagnostic error is found, the system displays a four-digit error
code adjacent to the faulty module in the Diagnostics menu. In the event a failure
occurs, record all displayed error information and contact your local Tektronix
service center.
The terminal is tested by a Kernel Self-Test and an Extended Self-Test. The
Kernel Self-Test performs the minimum hardware tests to ensure that the
terminal will boot. The test is executed at power on and takes approximately
10 seconds. The Extended Self-Test is intended for use by Tektronix service
personnel. For more information on both tests, contact your local Tektronix
service center.
Fault Isolation
The following fault isolation suggestions are provided to isolate problems to
either the terminal, mainframe, faulty probes, or operator setups. You should read
through these procedures to help isolate a problem to a specific part of the
instrument before contacting a Tektronix service center.
Mainframe Diagnostics
Terminal Diagnostics
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