Chapter 6: Replacing Assemblies
To remove and replace the fans
6–37
To remove and replace the fans
WARNING AVOID INJURY!
The fan blades are exposed both inside and outside the chassis. Disconnect the power cable before
working around the fan. Use extreme caution in working with the oscilloscope. Failure to observe
these precautions may result in injury.
When necessary, refer to other removal procedures.
1
Disconnect the power cable and remove the top and bottom covers.
2 Disconnect the two fan harness cables from the power regulator distribution board.
One cable is on the top of the chassis and one cable is on the bottom of the chassis.
3 Remove the fan bracket securing the fan to the chassis.
Figure 5-34
Removing Fan Fasteners
CAUTION AVOID OVERHEATING THE oscilloscope!
When replacing the fan, be sure the direction of the fan air flow is coming from the inside to the
outside of the oscilloscope. Check the flow arrows on the fan and check for proper flow once power
is applied to the oscilloscope. Improper air flow can overheat the oscilloscope.
4
To install the fan, reverse this procedure.
Use service kit tool
The ATX Service Kit (Agilent Technologies part number 54845-68803) has instructions and a tool to assist
with fan bracket removal.
Fan
bracket
Fan
Fan
harness
cables
Top of Chassis
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