Service Manual
Troubleshooting and Diagnostics
3-21
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,
2 short
Improper video configuration (reprogram EEPROM) or external ROM checksum failure.
