Troubleshooting, System faults, Power supply unit faults – Lenovo Secure Managed Client User Manual
Page 60: Cooling fan faults, System, Faults, Power, Supply, Unit, Cooling

Table
6.
Light
and
buzzer
interpretations
(continued)
LED/buzzer
State
Related
Meaning
Action
Constant
beep
Front
operator's
panel
fault
LED
constant
on
Failure
mode
Troubleshooting
The
following
sections
describe
common
problems,
with
possible
solutions,
which
can
occur
with
your
Secure
Managed
Client
(SMC)
-
Storage
Array.
For
details
on
how
to
remove
and
replace
a
module
see
the
Hardware
Installation
and
Replacement
Guide.
System
faults
Table
7.
System
faults
Symptom
Cause
Action
Audible
alarm
sounds
Internal
fault
detected
(failure
of
an
internal
communications
path)
Look
for
other
amber
LED
indications
on
the
power
supply
units.
If
there
is
a
PSU
error
present
there
may
be
a
communication
problem
with
that
PSU.
Remove
and
then
reinstall
the
PSU.
If
the
problem
persists
then
change
the
PSU.
Power
supply
unit
faults
Table
8.
Power
supply
unit
faults
Symptom
Cause
Action
1.
Front
operator's
panel
unit
fault
LED
amber
2.
Audible
alarm
sounding
1.
Any
power
fault
2.
A
thermal
condition
which
could
cause
PSU
overheating
1.
Verify
that
the
AC
main
connection
to
PSU
is
good.
2.
Disconnect
the
PSU
from
main
power
and
remove
the
PSU
from
the
power
supply
cage.
Reinstall.
If
problem
persists,
replace
PSU.
3.
Reduce
the
ambient
temperature
Cooling
fan
faults
Table
9.
Cooling
fan
faults
Symptom
Cause
Action
1.
Front
panel
fault
LED
amber
2.
Audible
alarm
sounding
3.
Fan
LED
is
illuminated
1.
Any
power
fault
2.
A
fan
failure
1.
Ensure
that
DC
power
to
cooling
fans
is
correct
and
that
the
LED
is
not
illuminated
2.
Disconnect
the
PSU
from
main
power
and
remove
the
faulty
fan
from
the
system.
Reinstall.
If
problem
persists,
replace
PSU.
3.
Reduce
the
ambient
temperature
54
Hardware
Maintenance
Manual