Lenovo ThinkPad A22p ThinkPad A2* Series Hardware Maintenance Manual (October - Page 59

Beep symptoms, No beep symptoms

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Beep symptoms Symptom-to-FRU index 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. Two or more beeps, or a continuous beep. Operating System starts successfully. Three short beeps, pause, three more short beeps, and one short beep. Only cursor appears. FRU or action, in sequence 1. Reseat the LCD connector. 2. LCD assembly. 3. External CRT. 4. System board. 1. System board. 2. LCD assembly. 3. DIMM. POST error. See "Numeric error codes" on page 49. 1. System board. 2. DIMM. If a mini-PCI Ethernet card is installed, confirm that Alert On LAN 2 in IBM BIOS Setup Utility is disabled. 1. DIMM. 2. System board Reinstall operating system. 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. The power-on password prompt. The hard-disk password prompt. The DOS full screen looks smaller. 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. A power-on password or a supervisor password is set. Type the password and press Enter. A hard-disk password is set. Type the password and press Enter. Start the ThinkPad Configuration program and set the Screen expansion function. ThinkPad A20m/p, A21m/p and A22m/p 53

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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 49.
Two short beeps with blank
screen.
1.
System board
.
2.
DIMM.
Two or more beeps, or a
continuous beep. Operating
System starts successfully.
If a mini-PCI Ethernet card is
installed, confirm that
Alert On
LAN 2
in IBM BIOS Setup
Utility is
disabled
.
Three short beeps, pause,
three more short beeps, and
one short beep.
1.
DIMM
.
2.
System board
Only cursor appears.
Reinstall operating system
.
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.
A power-on password or a
supervisor password is set.
Type the password and press
Enter
.
The hard-disk password
prompt.
A hard-disk password is set.
Type the password and press
Enter
.
The DOS full screen looks
smaller.
Start the ThinkPad
Configuration program and set
the
Screen expansion
function.
Symptom-to-FRU index
ThinkPad A20m/p, A21m/p and A22m/p
53