Troubleshooting the SA7x
5.2 Troubleshooting a Dead Enclosure
2. If the enclosure returns to normal operation, the fan operates, and the Fault
indicator does not light, an overtemperature condition at the operating site is
the likely cause of the failure. Investigate and correct the overtemperature
condition.
Note
An overtemperature may also show up through one of the error logs. If
an error log shows overtemperature and the Fault indicator is not lit, the
RA7x disk drive is most likely the cause of the failure. Refer to the
RA7x
Disk Drive Service Manual
for additional troubleshooting information.
If the enclosure has
not
been exposed to an overtemperature condition:
1. Leave the enclosure off for 10 seconds, and then turn it back on.
2. If the enclosure still does not operate, replace FRUs in the following order
until the problem is corrected:
a. Power supply
b. Fan assembly
c. Transition board 1 (TB1)
d. Transition board 2 (TB2)
e. The enclosure assembly (See the appropriate storage array guide for
instructions.)
5.2.2 If the Fault Indicator Is Not Lit
If the enclosure is dead and the power supply Fault indicator is not lit:
1. Verify site power by checking other equipment on the same line and the
circuit breakers to the cabinet.
2. Verify that the enclosure power plug is connected.
3. Verify that the cabinet power controller is connected to the site’s line voltage
outlet.
4. Verify that the Line Voltage Selector switch on the rear panel of the power
supply is set to the correct voltage.
5. Verify that the cabinet power controller and the enclosure power supply are
turned on.
6. If the enclosure still does not start, check for an overcurrent condition in the
power supply by removing power to the disk drives. Do this by pressing the
drive power switches on the front of the enclosure.
7. If the enclosure fan starts, proceed to Step 3 in Section 5.3.
8. If the enclosure fan does not start, replace FRUs in the following order until
the problem is corrected:
a. Power supply
b. TB1
c. TB2
5–2 Troubleshooting the SA7x
