Removing And Replacing The Fans - Keysight Technologies N5247B Service Manual

Repair and Replacement Procedures

Removing and Replacing the Fans

Removing and Replacing the Fans
Tools Required
— T-10 TORX driver (set to 9 in-lb)
— T-20 TORX driver (set to 21 in-lb)
— Pozidriv screw driver
— 5/16 inch open-end torque wrench (set to 10 in-lb)
— ESD grounding wrist strap
Removal Procedure
Refer to
1. Disconnect the power cord.
2. Remove the outer and inner covers. Refer to
3. Remove the front panel assembly. Refer to
4. Remove the power supply bracket. It is not necessary to remove the entire
5. Remove screws (item
6. Remove three screws (item
7. Raise the fan bracket out of both sides in the analyzer just enough to
8. Remove the fan brackets and fans from the analyzer.
9. To remove a fan or fan guard from the fan bracket:
Replacement Procedure
1. Reverse the order of the removal procedure.
7-88
Figure 7-48 for this procedure.
page 7-6.
Front Panel Assembly" on page
power supply, just the power supply bracket. Refer to
Replacing the A20 Power Supply Assembly" on page
that attach the fan brackets to the chassis.
the fan bracket.
access the fan cables. Disconnect the fan cables from the A18 system
motherboard connectors (item
a. Before removing a fan or fan guard, note the orientation of each fan
and fan guard for reinstallation.
b. Pull up the center pin of each of the fan rivets as shown by (item
in the illustration.
c. Pull out the rivet completely (as shown by (item
illustration) to release the fan and fan guard.
"Removing and Replacing the
7-8.

, five on the right side and seven on the left side)

) on both sides that attach the rear panel to

).
Keysight N5247B Service Guide
"Removing the Covers" on
"Removing and
7-26.

) in the

)