IBM manual 49

Beep Symptoms

Symptom/Error

FRU/Action

Continuous

beeps.

1.System Board

One beep and a blank,

1. Reseat

the

LCD

unreadable,

or

flashing

connector

.

(See

LCD.

“1090

LCD Assembly”

on

page 55.)

2.

LCD Assembly

3.

System Board

One

beep,

and

the

message1. Reseat

the

boot

“Unable

to

access

boot

device.

source.”

2.

Boot Device

3.

System Board

One

long,

two short

beeps 1.System Board

and

a

blank

or

unreadable 2.

LCD Assembly

LCD.

One

long

beep

followed

by1. Connect

the

AC

four

short

beeps

each

timeAdapter

or

install

a

the

power

switch is

fully-charged

battery.

operated.

(System cannot power-on

due

to

low

battery

voltage.)

One long and one short

1.System Board

beep.

One

beep every

second. 1. Connect

the

AC

(System

is

shutting

down

Adapter

or

install

a

due

to

low

battery

voltage.fully) -charged

battery

(allows

the

system to

completely shutdown

before the

battery

is

charged).

Two

short

beeps

with

error1. POST

error.

(See

codes.

“Numeric

Error

Codes”

on

page 35.)

Two

short

beeps

with

blank 1.System Board

screen.

No Beep		Symptoms
Symptom/Error						FRU/Action
No	beep,		power-on		indicator1. Go		to	“Power
not	on, and a blank LCD					Systems		Checkout”
during		POST.				on	page	29.
						2.	System Board
						3.	Power Sources
No	beep,		power-on		indicator1.System Board
on,	and	a	blank	LCD	during
POST.
No	beep,		power-on		indicator1.System Board
on,	and	a	blinking		cursor
only	during		POST.
38	IBM	Mobile		Systems		HMM