Tektronix TLA 720, Руководство по обслуживанию

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Mainframe Troubleshooting
TLA 720 Benchtop Chassis and TLA 7XM Expansion Chassis Service Manual
4–37
Check for Common Problems
Use Table 2–11 to quickly isolate possible failures. This list is not exhaustive,
but it may help you eliminate a problem that are quick to fix, such as a blown
fuse, loose cable, or defective module.
CAUTION. Do not install or remove any modules while the mainframe is powered
on. The modules are not hot swapable.
Installing or removing modules when the mainframe is powered on can damage
the modules and the mainframes.
Always power the mainframe off before attempting to install or remove modules.
Table 4–5: Failure symptoms and possible causes
Symptom Possible causes and recommended action
Mainframe does not power-on Verify that all power cords are connected to the mainframe and to the power source.
Check that the mainframe receives power when you press the On/Standby switch.
Check that fans start and that front-panel indicators light.
Check that power is available at the power source.
Check for failed fuses.
Mainframe failure: contact your local Tektronix service center.
Expansion mainframe does not
power-on Verify that all power cords are connected to the expansion mainframe and to the power source.
Check that all of the TLA 7XM expansion modules are firmly seated, and that the mounting
screws on the TLA 7XM expansion modules are tightened.
Check that the cables between the mainframe and the expansion mainframe are correctly
connected: A
→
A, B
→
B, and C
→
C.
Check that the TLA 7XM expansion module is in slot 0 of the TLA 7XM expansion chassis.
Check that power is available at the power source.
Check for failed fuses.
Expansion mainframe failure: contact your local Tektronix service center.
Monitor does not power-on Check the monitor power cord connection.
Check for failed fuse.
Monitor failure: contact the vendor of your monitor for corrective action.