Troubleshooting, System faults, Power supply unit faults – Lenovo Secure Managed Client User Manual

Page 60: Cooling fan faults, System, Faults, Power, Supply, Unit, Cooling

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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

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