Tektronix TLA 720, Service Manual

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Hardware Troubleshooting
4–32
TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual
Power on
Mainframe kernel test
Pass/Fail ?
Module 1
kernel test
Pass/Fail
Module 2
kernel test
Pass/Fail
Module 3
kernel test
Pass/Fail
Verify kernel self test status
Inhibit failed modules
Log failures and build configuration
Start TLA 700 application
Module power-on diagnostics
TLA 700 system power-on diagnostics
Records failures in Calibration and
Diagnostic property sheet
TLA 700 ready
Fail Terminate and
display error
code
Pass
MS Windows 98
boot
Start resource
manager
System controller
tests
Module n
kernel test
Pass/Fail
Figure 4–20: TLA 700 startup sequence
The main focus of the troubleshooting procedures is to isolate problems to one of
the major modules within the chassis.
Power Supply Problems. Use the following information to isolate power supply
problems to the power supply or to other modules.
H
Isolate the problem to either the chassis or to one of the installed modules.
Remove the modules from the chassis and check that the problem still exists.
H
Run the mainframe diagnostic tests.
Fault Isolation