Maintenance
VX1410 IntelliFrame Instruction Manual
7–17
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 mainframe or to one of the installed VXIbus
Modules. Remove the modules from the mainframe and check that the
problem still exists.
H
Try isolating the problem to a module by either replacing the module with an
known-good module or moving the module to a different slot.
H
Check the fuses in the mainframe and on the backplane.
H
Perform the procedures as described in Performance Verification beginning
on page 5–1 to verify the power supply voltages are present and within the
specified limits. If the voltages are not present on the 25-pin connector at the
rear of the mainframe, try replacing either the power supply or the instru-
ment monitor board. If any of the voltages are not within the specified limits,
replace the power supply.
Inadequate Cooling.
Cooling problems can be due to one or more of the following
problems:
H
Verify that the air filter is clean. If not, remove the air filter and clean it.
H
One or both fans may not be operating properly. Check that both fans rotate.
H
Verify that each fan is properly connected to the monitor board (see
Figure 7–3 on page 7–6).
H
Check that both fans are working at their proper speeds.
H
Verify that all of the IntelliGuides of empty slots within the mainframe
are closed when no modules are installed. If necessary replace the faulty
assembly.
H
Verify that the ribbon cable from the Temperature Sense board to the
backplane is properly connected.
H
Verify that all VXIbus modules have front panel that activate the Intelli-
Guides (shutters).
Repackaging Instructions
If you need to send the VX1410 IntelliFrame to a Tektronix field center for
repair, attach a tag to the mainframe with the owner name and address, the serial
number, and a brief description of the problem(s) encountered or the service
required. Always return all accessories so that the entire system can be tested.
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