IBM THINKPAD A20M User Manual download pdf (Page 59)

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

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 157 158

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