Sun Microsystems SunSwift SPARCserver 1000, Manual

Page: 43 / 76

Removing and Replacing System Boards and Assemblies 2-23
2
Once the jumper is in the ON position, proceed with the installation or
removal as described in the preceding sections.
2.7 OpenBoot PROMs
Use this procedure for Boot PROM upgrades. Refer to Figure 2-19 for the
PROM socket locations. Pin one is at the upper left corner for all the PROMs.
2.7.1 Removal
1. To uncover the PROMs, remove the SuperSPARC module (if any) in
module location B.
2. Use an IC extractor tool to remove the PROMs.
Refer to Figure 2-19 to locate the OpenBoot PROMs.
3. Place the PROMs on antistatic foam plastic in an antistatic package for
storage or possible reuse.
2.7.2 Replacement
To continue the OpenBoot PROM upgrade, proceed as follows:
1. Verify the correct PROM location.
Each boot PROM has a different socket location (refer to Figure 2-19) and
part number.
2. Position the PROM carefully on the socket, and partially seat the PROM.
3. Ensure that the PROM pins are not bent, then press firmly to seat the
PROM in the socket.
Caution – When inserting the PROM, do not flex the board or press it against
a hard surface. Use a cushioned ESD mat to protect the board.
4. Repeat steps 2 and 3 for the remaining OpenBoot PROMs.
5. Replace any SuperSPARC module that was removed for this procedure.
!