Beep Symptoms; No Beep Symptoms - IBM ThinkPad X20 Hardware Maintenance Manual

Hibernation error
Operating system not found
Fan error

Beep symptoms

Symptom or 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 with blank
screen
Only cursor appears

No beep symptoms

Symptom or error
No beep, power-on indicator
on, LCD blank, and no POST
No beep, power-on indicator
on, and LCD blank during
POST
No beep during POST, but
system runs correctly
50
ThinkPad X20, X21, X22, X23
1. Restore the system
configuration to what it
was the before the
computer entered
hibernation mode.
2. If memory size has been
changed, re-create the
hibernation file.
1. Reseat the hard disk
drive.
2. Check the boot sequence
by use of IBM BIOS Setup
1. Fan.
FRU or action, in sequence
1. Reseat the LCD
connector.
2. LCD assembly.
3. System board.
1. System board.
2. LCD assembly.
POST error. See "Numeric
error codes" on page 47
1. System board.
1. Reinstall operating
system.
FRU or action, in sequence
1. Make sure that every
connector is connected
tightly and correctly.
2. DIMM.
3. System board.
1. Reseat DIMM.
2. System board.
1. Speaker.