IBM 5786, Процедуры снятия и замены

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Yes
a.
Ensure that:
v
The DC On/Off switch is set to On.
v
Both ends of the SCSI cable are correctly connected.
v
The host system is switched on.
b. If the FLT LED of a power supply is still on, pull out the power supply to disconnect it
from the 7031-D24 or 7031-T24, then push it back to reseat its connectors (go to the 5786,
5787, and 7031 models D24 and T24 removal and replacement procedures), and select the
appropriate part.
c.
If the FLT LED is still on, exchange, in the sequence shown, 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 whose FLT LED is NOT on, (go to the 5786, 5787, and 7031 models D24
and T24 removal and replacement procedures), and select Power supply.
2)
SCSI interface card
3) Frame assembly
12. Is the subsystem power LED on?
No Go to “MAP 2020: 7031-D24 or 7031-T24 power.”
Yes Go to step 13.
13. Does either power supply assembly have its DC PWR LED off when it should be on?
No
Go to step 14.
Yes
a. Exchange the power-supply assembly whose LED is off.
b.
Go to “MAP 2410: 7031-D24 or 7031-T24 repair verification” on page 42 to verify the
repair.
14. Are you here because access to all the SCSI devices that are in the 7031-D24 or 7031-T24 has been
lost?
No No problem has been found on the 7031-D24 or 7031-T24. For a final check, go to “MAP
2410: 7031-D24 or 7031-T24 repair verification” on page 42.
Yes Go to “MAP 2340: 7031-D24 or 7031-T24 SCSI bus” on page 41.
MAP 2020: 7031-D24 or 7031-T24 power
This MAP helps you to isolate FRUs that are causing a power problem on a 7031-D24 or 7031-T24. This
MAP assumes that the disk subsystem is connected to a system that is powered on.
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. You are here because the subsystem's power Light Emitting Diode (LED) is off.
Are the 2 middle green LEDs illuminated (AC and DC) on either power supply?
No
Go to step 2 on page 37.
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. Power supply (or power supplies if two are present)
b. Frame assembly
36
Removal and replacement procedures