IBM 7012 300 Series Installation And Service Manual page 74

Replacement
Attention: If you move the disk drive from a colder or warmer environment than the room
where it will be used, allow the disk drive to gradually reach the temperature of the room. By
allowing the disk drive time to acclimate, data loss or permanent damage to the disk drive
can be avoided. The proper time is at least one hour for each 10 C (18 F) of difference
between the storage environment and the operating environment.
1. Set the address settings of the new disk drive the same as the settings of the old drive.
For more information, refer to Chapter 9 of Diagnostic Information For Micro Channel
Bus Systems .
2. Install the disk drive in the frame.
3. Connect the SCSI cable to the drives. Ensure that the keys on the connectors match.
4. Plug in the power supply connector to the drives.
5. Install the front of the frame assembly first. The lower front alignment tab must locate in
its slot.
6. Then pivot the rear of the frame assembly into place. There are hooks and alignment
tabs in the front and rear.
7. Do the "Top Cover" replacement procedure on page 3-4.
8. Connect the power cable.
9. Set the power switches of the attached devices to On.
10. Set the power switch of the system unit to On.
Model 397
P3 (C)
Frame
Assembly
P4 (D)
SCSI
Cable
Hook
Disk
Drives
Removal and Replacement Procedures
3-15