Service manual

GS80 Component Removal and Replacement 6-25
Removal
1. If the system is partitioned, it is not necessary to power down anything. (In a
GS80 system so partitioned, there is no traffic across the distribution board.)
Skip to step 3. Note, only hard partitions can be powered off. If soft
partitions are used, they must be shut down and the hard partition be
powered off.
2. However, if the system is not partitioned or is partitioned such that there is
traffic across the distribution board, shut down the operating systems and
issue the SRM power off command. Put the OCP switch in the Off position.
3. Open the front door.
4. Remove the eight Phillips head screws holding the drawers to the cabinet.
5. Pull both drawers forward on their rails until they stop.
6. At the left side of the bottom drawer, remove the distribution board channel
cover by removing the two Phillips head screws holding the cover in place.
Remove the cover. The distribution board is now exposed.
7. To disconnect the global port cables from the distribution board insert the
blade end of a flathead screwdriver between the plastic cable guide and lip of
the cable connector at one end of the connector and twist one edge of the cable
loose. Repeat this procedure to loosen the other edge of the cable from the
connector on the distribution board and pull it from the connector.
Disconnect the bottom two cables.
8. Disconnect the outer of the two global port cables from the top drawer using
the procedure described in step 7. Once the cable is disconnected, free the
cable shield and fold the cable and shield up and away from the last cable.
Disconnect the last cable and move all cables away from the distribution
board. (The cable shield prevents damage to the cable as the top drawer is
slid in and out of the cabinet when the covers are off.)
9. Remove the four Phillips head screws holding the distribution board to the
distribution board channel and remove the module.
Replacement
Reverse the removal procedure.
Verification
Power up the system.