IBM 5786, Процедуры снятия и замены

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8. Is the host system switched on?
No Switch on the host system (see the host system-service information). The 2104 Model DS4 or
Model TS4 should switch on when the host system switches on.
If the problem is still not solved, go to “MAP 2010: 7031-D24 or 7031-T24 start” on page 34.
Yes In the sequence shown, exchange the following FRUs for new FRUs. Ensure that for each FRU
exchange, you go to “MAP 2410: 7031-D24 or 7031-T24 repair verification” on page 42 to
verify the repair.
a. External SCSI cables
b. SCSI interface card assembly (go to the 5786, 5787, and 7031 models D24 and T24 removal
and replacement procedures),
Note:
If the TERM POWER LED is still off, you might have a problem with the SCSI
attachment that is in the host system (see the using system service information).
MAP 2022: 7031-D24 or 7031-T24 power-on
This MAP helps you to isolate FRUs that are causing a power problem on a 7031-D24 or 7031-T24 disk
subsystem.
Attention: Do not remove power from the host system or the disk subsystem unless you are directed to
in the following procedures. Power cables and external SCSI cables that connect the disk subsystem to the
host system can be disconnected while that system is running.
1. In this step you remove most of the FRUs from the 7031-D24 or 7031-T24 disk subsystem.
a.
Remove both power supply assemblies, if two are present.
b. Remove the fan assemblies.
c.
Remove the SCSI interface card assemblies. If your disk subsystem has only one SCSI interface
card assembly, you do not need to remove the dummy assembly.
d. Disconnect all the disk drive modules from the backplane.
Note: You do not need to completely remove the disk drive modules.
e. Go to step 2.
2. Do the following procedure to check the disk subsystem as you reinstall parts.
a. Reinstall a power supply into position 1.
b.
Reinstall the fan assemblies.
c. Connect a power cable to the power supply.
d.
Set the DC On/Off switch of the power supply to On.
e. Reinstall one SCSI interface card and connect the appropriate cables to a powered-on system.
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 3 on page 39.
Yes
a.
In the sequence shown, exchange the following FRUs for new FRUs. Ensure that for each
FRU exchange, you go to “MAP 2410: 7031-D24 or 7031-T24 repair verification” on page 42
to verify the repair.
1) Power supply that you just reinstalled
2) Fan assemblies
3) SCSI interface card
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Removal and replacement procedures