Service manual

Removal and Replacement 7-23
Removal
1. Shut down the operating system and power down the system.
2. Expose the system drawer.
3. Expose the system bus card cage. Remove the two Phillips head screws holding
the cover in place and slide it off the drawer.
4. Identify and remove the faulty module. A label to the left of the system card
cage identifies which slot contains the high or low halves of memory banks.
The memory module is held in place by a flathead captive screw attached to the
top brace of the module. Loosen the screw and lift the module from the cage.
Replacement
Reverse the steps in the Removal procedure.
NOTE: Memory modules must be installed in pairs. When you replace a bad
module, be sure the second module in the pair is in place.
Verification — DIGITAL UNIX and OpenVMS Systems
1. Bring the system up to the SRM console by pressing the Halt button, if
necessary.
2. Issue the show memory command to display the status of the new memory.
3. Verify the functioning of the new memory by issuing the command test memn,
where n is 0, 1, 2, 3, or *.
Verification — Windows NT Systems
1. Start AlphaBIOS Setup, select Display System Configuration, and press
Enter.
2. Using the arrow keys, select Memory Configuration to display the status of the
new memory.
3. Switch to the SRM console (press the Halt button in so that the LED on the
button lights and reset the system). Verify the functioning of the new memory
by issuing the command test memn, where n is 0, 1, 2, 3, or *.