Beep Symptoms; No-Beep Symptoms - IBM ThinkPad R40 Hardware Maintenance Manual

Beep symptoms

Sym ptom o r error
One beep and a blank,
unreadable, or flashing LCD.
One long and two short beeps,
and a blank or unreadable
LCD.
Two short beeps with error
codes.
Two short beeps and a blank
screen.
Three short beeps, pause,
three more short beeps, and
one short beep.
One short beep, pause, three
short beeps, pause, three more
short beeps, and one short
beep.
Only cursor appears.
Four cycles of four short beeps
and a blank screen.
Five short beeps and a blank
screen.

No-beep symptoms

Sym ptom o r error
No beep, power-on indicator
on, LCD blank, and no POST.
No beep, power-on indicator
on, and LCD blank during
POST.
The power-on password prompt
appears.
The hard-disk password prompt
appears.
The DOS full screen looks
smaller.
Symptom-to-FRU index
FRU o r actio n, in sequence
1. Reset the LCD co n n e c to r.
2. LCD assembly.
3. External CRT.
4. System board.
1. System b o ard.
2. LCD assembly.
3. DIMM.
POST error. See " Numeric
e rro r cod es" on page 53.
1. System b o ard.
2. DIMM.
1. DIMM.
2. System board
R einstall operating s yste m .
System board (IBM security
chip)
System board
FRU o r actio n, in sequence
1. Make sure that every
con necto r is connected
tig h tly and c o rre c tly .
2. DIMM.
3. System board.
1. Reset DIMM.
2. System board.
A power-on password or a
supervisor password is set.
Type the password and press
E nter.
A hard-disk password is set.
Type the password and press
E nter.
Start the ThinkPad
Configuration program and set
the Screen expansion
function.
ThinkPad R40 5 7