Lenovo THINKPAD T60 -, Hardware Maintenance Manual

Page: 56 / 210

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 “Numeric error codes” on
page 45.
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
.
The DOS full screen looks smaller than it
should.
Start the ThinkPad Configuration program
and set the Screen expansion function.
Symptom-to-FRU index
50
MT 1951, 1952, 1953, 1954, 1955, 1956, 2007, 2008, 2009, 2613, 2623, and 2637