Figure 1-5 Installing Fan Assembly - Digital Equipment DIGITAL Personal Workstation Upgrade Manual

The Upgrade
11. Carefully remove the new MLB from its ESD-protected bag and place it onto a static-
free, flat surface.
12. Move memory and Bcache option
a) Install new MLB -AA/-BA Speed Upgrade
b) Move CPU Chip from "old" MLB to "new" MLB. (For -CA option only)
c) Place both modules on a static free flat surface.
d) To remove the CPU and heat sink assembly from the old MLB, unlatch ZIF handle
by depressing down and slightly away from ZIF socket.
e) Raise the ZIF handle to a vertical position.
f) Remove CPU and heat sink, and note the orientation for re-installation.
g) Open ZIF socket on new MLB by unlatching and raising handle as in Step D.
h) Install CPU and heat sink in the new MLB with the same orientation as the old
MLB.
i) Push the handle down until it latches on the side of the ZIF socket.
1–8 DIGITAL Personal Workstation Upgrade Guide

Figure 1-5 Installing Fan Assembly

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