Beep symptomsSymptomor error FRUor action, in sequence
Onebeep and a blank,
unreadable,or flashing LCD. 1. Reseatthe LCD
connector.
2. LCDassembly.
3. ExternalCRT.
4. Systemboard.
Onelong and two short beeps,
anda blank or unreadable
LCD.
1. Systemboard.
2. LCDassembly.
3. DIMM.
Twoshort beeps with error
codes. POSTerror. See “Numeric
errorcodes”on page49.
Twoshort beeps and a blank
screen. 1. Systemboard.
2. DIMM.
Twoor more beeps, or a
continuousbeep. Operating
systemstarts successfully.
Ifa mini-PCI Ethernet card is
installed,confirm that Alert On
LAN2 in IBM BIOS Setup
Utilityis disabled.
Threeshort beeps, pause,
threemore short beeps, and
oneshort beep.
1. DIMM.
2. Systemboard
Oneshort beep, pause, three
shortbeeps, pause, three more
shortbeeps, and one short
beep.
Onlycursor appears. Reinstalloperating system.
No-beep symptomsSymptomor error FRUor action, in sequence
Nobeep, power-on indicator
on,LCD blank, and no POST. 1. Makesure that every
connectoris connected
tightlyand correctly.
2. DIMM.
3. Systemboard.
Nobeep, power-on indicator
on,and LCD blank during
POST.
1. ReseatDIMM.
2. Systemboard.
Thepower-on password prompt
appears. Apower-on password or a
supervisorpassword is set.
Typethe password and press
Enter.
Thehard-disk password prompt
appears. Ahard-disk password is set.
Typethe password and press
Enter.
TheDOS full screen looks
smaller. Startthe ThinkPad
Configurationprogram and set
theScreen expansion
function.
Symptom-to-FRUindex