Tektronix VX1411A IntelliFrame VXIbus Mainframe, Instruction Manual

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Maintenance
VX1411A IntelliFrame Mainframe Instruction Manual
4–17
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.
H
Perform the procedures as described in Functional Check and Performance
Verification beginning on page 1–22 to verify the power supply voltages are
present and within the specified limits. If the voltages are not present,
replace the power supply. If any of the voltages are not within the specified
limits, replace the power supply.
Inadequate Cooling. If cooling problems occur, perform the following checks:
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 fan control module (see
Figure 4–4 on page 4–7).
H
Check the power switch for proper function.
H
Check that both fans are working at variable and high speeds.
H
Verify that all of the empty slots within the mainframe are closed when no
modules are installed. If necessary replace the faulty shutter assembly.
H
Verify that each VXIbus module has a front panel that activates the
IntelliGuides (shutters).
Repackaging Instructions
If you need to send the VX1411A IntelliFrame Mainframe 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.
When repacking the mainframe for shipment, use the original packaging. If the
packaging is unavailable or unfit for use, contact your local Tektronix representa-
tive to obtain new packaging.
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