National Instruments NI PXI-1042 Series 用户手册

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NI PXI-1042 Series Power Supply Shuttle User Guide
Installation and Maintenance
The information in this section is for qualified service personnel only. Read 
the Read Me First: Safety and Radio-Frequency Interference document 
included with your kit before using the power supply shuttle.
Caution
Many components within the NI PXI-1042 Series chassis under repair are 
susceptible to static discharge damage. Service the chassis only in a static-free 
environment. Observe standard handling precautions for static-sensitive devices while 
servicing the chassis. Always wear a grounded wrist strap, or equivalent, while servicing 
the chassis.
Caution
Always disconnect the AC power cable before cleaning or servicing the chassis.
Caution
Never connect the AC power cable to the power supply shuttle until you install it 
in an NI PXI-1042 Series chassis. Do not use, test, or configure the power supply shuttle 
outside of a chassis.
The power supply shuttle is a replacement part for the NI PXI-1042 Series 
chassis. The NI PXI-1042 User Manual contains all of the most up-to-date 
chassis service procedures, including removal and replacement of power 
supply shuttles. The chassis includes a hardcopy of the NI PXI-1042 User 
Manual
; additionally, you can download a softcopy from 
ni.com/
support
.
Removal
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 mounting screws that attach the power supply shuttle to the chassis. 
Refer to Figure 1 for the mounting screw locations. Using a Phillips 
screwdriver, loosen the captive mounting 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 mounting 
screws with a Phillips screwdriver.