IBM pSeries 690 Service Manual page 1028

I/O Subsystem DASD 4-Pack
Removal
1. Press the green Start Service button on the UEPO switch.
2. Locate the DASD backplane to be replaced.
3. Turn off the power as described in "Powering Off and Powering On the System" on page 854.
4. Remove the front cover from the I/O subsystem by grasping the pins at either side of the cover, pulling
them towards the center of the drawer, and simultaneously lifting the cover up and to the front to
release it from the I/O subsystem chassis.
5. Remove the DASD disk drive assemblies or DASD filler(s) from the affected 4-pack as shown in the
following illustration.
1 DASD 4-Pack Assembly
2 I/O Subsystem Chassis
3 EMC Filler Shield
6. Remove two M4x0.7 screws at the lower inside front of the DASD 4-pack with a short-blade
screwdriver.
7. Remove two M4x0.7 hex socket-head cap screws at the lower inside rear of the DASD 4-pack.
8. Grasp the DASD 4-pack through the cutouts in the top of the I/O subsystem, and pull the DASD
4-pack out of the front of the I/O subsystem.
Replacement
1. Perform steps 4 through 8 of the removal instructions in reverse order.
2. Turn on the power as described in "Powering Off and Powering On the System" on page 854.
3. Press the white Service Complete button on the UEPO switch.
1012 Eserver pSeries 690 Service Guide
4 Cover
5 Disk Drive Assembly
6 DASD Filler