A-3
2
1
3
4
5
Appendix
I
A
An alarm is sounded
and the alarm LED is
off. The alarm can be
switched mute with
the mute button.
One of the power
supply units has been
disconnected from
power during opera-
tion.
Check the LEDs of the power supply
units. If one is extinguished or lit in
red, this unit may be disconnected
from power. Examine the power
cord of the unit. See to it that it is in
good technical order, correctly
plugged in at both ends and that the
mains current is operating properly.
One of the power
supply units has
failed.
Check the LEDs of the power supply
units. If one is extinguished or lit in
red, a power supply unit has failed.
Replace the broken unit as described
in section “Power Supply Mainte-
nance” on page 5-10.
An alarm is sounded
and the alarm LED is
off. The alarm cannot
be switched mute
with the mute but-
ton.
OR
At start-up the sys-
tem is not able to ini-
tialize a disk set, i.e.
one or more hard
disks are not recog-
nized by the system.
A hard disk or a hard
disk carrier got loose/
jammed (e.g. after
transport) or is not
mounted correctly.
Shut down the system as described
in section “Shutting Down the Sys-
tem” on page 4-2. Then perform
the following: Pull all disk carriers
partially out of the chassis and after-
wards install them again. See to it
that they are pulled out and reas-
sembled correctly as described in
section “Replacing a Hard Disk” on
page 5-3. After that start the system
again.
A hard disk of the
hard disk array is de-
fective.
Replace the defective disk as ex-
plained in section “Hard Disk Main-
tenance” on page 5-2.
Error
Cause
Solution
Summary of Contents for Pronto3
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