IBM 5786 Removal And Replacement Procedures page 51

4) Frame assembly
b. Go to step 3.
3. Reinstall the other power supply into position 2.
a. Connect a power cable to the power supply.
b. Set the DC On/Off switch of the power supply assembly to On.
Note: Unless a procedure needs you to switch off the disk subsystem, leave it switched on for the
remainder of this MAP.
Does the disk subsystem emit smoke or is there a burning smell?
No Go to step 4.
Yes Replace the power supplies.
4. Reinstall a SCSI interface card assembly into position 1.
Does the disk subsystem emit smoke or is there a burning smell?
No If the disk subsystem has 2, 3, or 4 SCSI interface cards, go to step 5. Otherwise, go to step 6.
Yes
a. Exchange, for a new one, the SCSI interface card assembly that you have just reinstalled.
b. If the disk subsystem has two SCSI interface cards, go to step 5. Otherwise, go to step 6.
5. Reinstall the other SCSI interface card assembly into position 2.
Does the disk subsystem emit smoke or is there a burning smell?
No Go to step 6.
Yes
a. Exchange, for a new one, the SCSI interface card assembly that you just reinstalled.
b. Go to step 6.
6. Reconnect a disk drive.
Note: To engage the disk drive you must close its handle.
Does the disk subsystem emit smoke or is there a burning smell?
Go to step 7.
No
Yes
a. Exchange, for a new one, the disk drive module that you just reconnected.
b. Go to step 7.
7. Reconnect the next disk drive module.
Note: To engage the disk drive you must close its handle.
Does the disk subsystem emit smoke or is there a burning smell?
No Go to step 8.
Yes
a. Exchange, for a new one, the disk drive module that you just reconnected.
b. Go to step 8.
8. Have you reconnected all the disk drive modules?
No Return to step 7.
Yes Go to step 9 on page 40.
7031-D24 or 7031-T24 maintenance analysis procedures
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