Service manual

GS80 Component Removal and Replacement 6-17

Module Removal

1. If the operating system supports hot-swap I/O, enter the OS command that

puts the target local I/O module in the hot-swap state. See Section 4.3.1.

Skip to step 4.

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. 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. Remove the I/O transition module attached to the target local I/O riser. See

Section 6.7.

5. If you did not access the drawer containing the target FRU in step 4, access it

now. See Section 6.1.1 or 6.1.2. Identify the target local I/O riser. If

applicable, put the PSM switch in the Service position.

6. 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.

7. Remove the module.

Module Replacement

From the spare I/O riser module, remove the plastic protective caps covering the

connectors to the I/O transition module. (Place them on the module you are

returning.)

Reverse the steps outlined in the removal procedure.

Be sure to leave the OCP switch in its original position.

Verification

Power on the system and verify that the I/O configuration includes resources

attached to the replaced local I/O riser. Execute the SRM set_sys_serial_num

command.