Beep Codes*

POST Description

3-4-4-1

Clear parity checkers.

3-4-4-2

Display MultiBoot menu.

3-4-4-3

Clear screen (optional).

3-4-4-4

Check virus and backup reminders.

4-1-1-1

Try to boot with INT 19.

4-1-1-2

Initialize POST Error Manager (PEM).

4-1-1-3

Initialize error logging.

4-1-1-4

Initialize error display function.

4-1-2-1

Initialize system error handler.

4-1-2-2

PnPnd dual CMOS (optional).

4-1-2-3

Initialize note dock (optional).

4-1-2-4

Initialize note dock late.

4-1-3-1

Force check (optional).

4-1-3-2

Extended checksum (optional).

4-1-3-3

Redirect Int 15h to enable remote keyboard.

4-1-3-4

Redirect Int 13h to Memory Technologies Devices such as ROM, RAM, PCMCIA, and serial disk.

4-1-4-1

Redirect Int 10h to enable remote serial video.

4-1-4-2

Re-map I/O and memory for PCMCIA.

4-1-4-3

Initialize digitizer and display message.

4-2-1-3

Unknown interrupt.

4-3-1-1

Initialize the chipset.

4-3-1-2

Initialize the bridge.

4-3-1-3

Initialize the CPU.

4-3-1-4

Initialize system timer.

4-3-2-1

Initialize system I/O.

4-3-2-2

Check force recovery boot.

4-3-2-3

Checksum BIOS ROM.

4-3-2-4

Go to BIOS.

4-3-3-1

Set Huge Segment.

4-3-3-2

Initialize Multi Processor.

4-3-3-3

Initialize OEM special code.

4-3-3-4

Initialize PIC and DMA.

4-3-4-1

Initialize Memory type.

4-3-4-2

Initialize Memory size.

4-3-4-3

Shadow Boot Block.

4-3-4-4

System memory test.

4-4-1-1

Initialize interrupt vectors.

4-4-1-2

Initialize Run Time Clock.

4-4-1-3

Initialize video.

4-4-1-4

Initialize System Management Manager.

4-4-2-1

Output one beep.

4-4-2-2

Clear Huge Segment.

4-4-2-3

Boot to Mini DOS.

4-4-2-4

Boot to Full DOS.

1 long,

Improper video configuration (reprogram EEPROM) or external ROM checksum failure.

2 short

 

3-22 Troubleshooting and Diagnostics

Service Manual