Service manual

GS80 Component Removal and Replacement 6-11
Module Removal
1. If the operating system supports hot-swap CPU and the CPU in question is in the top
drawer, enter the appropriate OS command to put the target CPU in the hot-swap
state. See Section 4.3.1. Skip steps 2 and 3.
2. If the system is not partitioned, shut down the operating system and issue the SRM
power off command. Put the OCP switch in the Off position. Skip step 3.
3. If the system is partitioned, from the console connected to the partition with
the target FRU, shut down the operating system and power it off using the
SRM power off command. Note, only hard partitions can be powered off. If
soft partitions are used, both partitions must be shut down and the hard
partition powered off.
4. Access the drawer by following the procedure in Section 6.1.1 or Section 6.1.2
depending upon whether the CPU is in the top or bottom drawer. Identify the target
CPU – its yellow OK to Swap LED should be lit. If applicable, put the PSM switch
in the Service position.
5. Using both hands, one on each module lever, place your index finger on the catch and
thumb on the edge of the lever just below/above the arrow. First squeeze to release
the lever and then pull both levers away from the module to release it from the QBB
backplane.
6. Remove the module.
Module Replacement
1. Place the module on the module guides and push it into the system box.
2. Be sure the levers properly seat with the system box edge by pressing the module
firmly into place.
3. Once the levers are properly seated, press them toward the module edge until the
catches snap.
4. Be sure to return the OCP switch to its original position.
Verification
Power on the CPU and see that it joins the operating system resources. Execute the SRM
set sys_serial_num command.