18.
Reinstall the right Side Panel (Section 7.4.4), then reinstall the Top Panel
(Section 7.4.2).
7.8.4 Fan Assembly Removal 44xx and 46xxx Models
1.
Remove the Top Panel (Section 7.4.1), then remove the right Side Panel
(Section 7.4.3). The openings in the right side of the TLS’ frame give access to the
nuts on the back of the Fan Assembly's mounting screws.
2.
Use a flat-blade screwdriver to turn both 1/4-turn fasteners at the top of the
Drive Access Hatch counter-clockwise and open the hatch.
3.
Use a number 2 Phillips screwdriver to remove all six Rear Service Panel mount-
ing screws, then remove the Rear Service Panel (Figure 7-25).
4.
Carefully cut the Cable Tie on the Executive PCBA that is attached to the Fan
Assembly’s power cables. See Figure 7-18.
5.
Unplug the Fan Assembly's power cable from the Executive PCBA at the 12V
Fans connector (Figure 7-18).
NOTE
Some styles of Fan Assembly housings have nuts attached to the mounting screws and some al-
low the mounting screws to thread directly into the housing. In the next step, those housings
that use nuts will have the nuts come loose when the screws are removed. Use the holes in the
left side of the TLS’ frame to reach the nuts on the back/left side of the Fan Assembly.
6.
Remove all four Fan Assembly mounting screws See Figure 7-15.
7.
Move the Fan Assembly toward the Drive Access Hatch opening and then lift the
Fan Assembly out of the TLS through the Drive Access Hatch opening. See
Figure 7-18.
12V Fans Connector
Cable Tie
Executive PCBA
Drive Access Hatch Opening
Fan Assembly
Figure 7-18 Removing the Fan Assembly from a 44xx or 46xxx Library
501380 Rev. B
Field–Replaceable Units (FRUs)
7-27