Chapter 3
Maintenance
NI PXI-1042 Series User Manual
3-4
ni.com
Replacing the Modular Power Supply
This section describes how to remove, configure, and install the AC
power-supply shuttle in the PXI-1042 Series chassis.
Note
The AC power supply shuttles for the PXI-1042 and PXI-1042Q chassis are not
interchangeable.
Caution
Disconnect the power cable prior to replacing the power supply.
Before connecting the power-supply shuttle to a power source, read this
section and the
Read Me First: Safety and Radio-Frequency Interference
document included with the kit.
Removal
The PXI-1042 AC power-supply is a replacement part for the PXI-1042
AC chassis. The PXI-1042Q AC power-supply shuttle is a replacement
part for the PXI-1042Q AC chassis. Before attempting to replace the
power-supply shuttle, verify that there is adequate clearance behind the
chassis. Set the power switch on the front panel to the Off (nonrecessed)
position and disconnect the power cable from the power-supply shuttle on
the back of the chassis. Identify the eight captive screws for the PXI-1042
or the eight SEMS screws for the PXI-1042Q that attach the power-supply
shuttle to the chassis. Refer to Figure 1-2,
, or Figure 1-3,
Rear View of the PXI-1042Q Chassis
, for the screw
locations. Using a Phillips screwdriver, loosen the captive screws. Pull on
the two rear handles of the power-supply shuttle to remove it from the back
of the chassis.
Installation
Ensure that there is no visible damage to the new power-supply shuttle.
Verify that the housing and connector on the new power-supply shuttle
have no foreign material inside. Remove the protective cap on the
PXI_CLK10 connector. Install the new power-supply shuttle into the
opening on the rear of the chassis. Tighten the eight captive screws with
a Phillips screwdriver.
