Lenovo thinkpad z60t Servicehandbuch
Beep
symptoms
Symptom
or
error
FRU
or
action,
in
sequence
One
beep
and
a
blank,
unreadable,
or
flashing
LCD.
1.
Reseat
the
LCD
connector
.
2.
LCD
assembly.
3.
External
CRT.
4.
System
board.
One
long
and
two
short
beeps,
and
a
blank
or
unreadable
LCD.
1.
System
board
.
2.
LCD
assembly.
3.
DIMM.
Two
short
beeps
with
error
codes.
POST
error.
See
Two
short
beeps
and
a
blank
screen.
1.
System
board
.
2.
DIMM.
Three
short
beeps,
pause,
three
more
short
beeps,
and
one
short
beep.
1.
DIMM
.
2.
System
board
One
short
beep,
pause,
three
short
beeps,
pause,
three
more
short
beeps,
and
one
short
beep.
Only
the
cursor
appears.
Reinstall
the
operating
system
.
Four
cycles
of
four
short
beeps
and
a
blank
screen.
System
board
(security
chip)
Five
short
beeps
and
a
blank
screen.
System
board
No-beep
symptoms
Symptom
or
error
FRU
or
action,
in
sequence
No
beep,
power-on
indicator
on,
LCD
blank,
and
no
POST.
1.
Make
sure
that
every
connector
is
connected
tightly
and
correctly
.
2.
DIMM.
3.
System
board.
No
beep,
power-on
indicator
on,
and
LCD
blank
during
POST.
1.
Reseat
DIMM
.
2.
System
board.
The
power-on
password
prompt
appears.
A
power-on
password
or
a
supervisor
password
is
set.
Type
the
password
and
press
Enter
.
The
hard-disk
password
prompt
appears.
A
hard-disk
password
is
set.
Type
the
password
and
press
Enter
.
Symptom-to-FRU
index
ThinkPad
Z60t
49