Digital Equipment DEC 10000, Service Manual

Page: 21 / 70

Adding or Replacing CPUs and Memories 1-9
1. Perform an orderly shutdown of the system.
2. Turn the keyswitch on the front control panel to the Disable position
and wait for the control panel yellow Fault LED to stop flashing.
When the Fault LED stops flashing, power has been removed from
the LSB backplane and you may safely proceed.
3. Open the cabinet door by holding the recessed handhold and pulling
the door out toward you.
4. Put on the antistatic wrist strap.
CAUTION: You must wear a wrist strap when you handle any mod-
ules.
5. Release the plate covering the LSB card cage by loosening the two
thumbscrews on the end of the plate. The plate is connected to the
card cage by a cable; let the plate swing to one side.
6. On the module you are removing, use your thumbs to pull the two
black restraining clips out and to the right (see Figure 1-5, step 1).
The clips snap when they open.
7. Pull both levers out at the same time until they are perpendicular to
the front of the module (see Figure 1-5, step 2). This frees the module
from the backplane.
8. Holding the levers, pull on the module until it is out far enough to hold
it underneath as you remove it.
9. When the module becomes free of the card cage, hold it with both
hands, and place the module on an ESD pad in a safe area. If the
module is being replaced, pack the module in the box from the new
module.
For more information:
Platform Service Manual