Chapter2 Troubleshooting Procedures
Satellite U400/Satellite Pro U400/PORTEGE M800
Maintenance Manual 2-19
Code Beeps POST Routine Description
AAh Scan for F2 key stroke
ACh Enter
SETUP
AEh
Clear Boot flag
B0h
Check for errors
B2h
POST done - prepare to boot operating system
B4h
One short beep before boot
B5h
Terminate QuietBoot (optional)
B6h
Check password (optional)
B9h Prepare
Boot
Bah
Initialize DMI parameters
BBh
Initialize PnP Option ROMs
BCh Clear
parity
checkers
BDh Display MultiBoot menu
BEh
Clear screen (optional)
BFh
Check virus and backup reminders
C0h
Try to boot with INT 19
C1h
Initialize POST Error Manager (PEM)
C2h
Initialize error logging
C3h
Initialize error display function
C4h
Initialize system error handler
C5h
PnPnd dual CMOS (optional)
C6h
Initialize notebook docking (optional)
C7h
Initialize notebook docking late
C8h Force
check
(optional)
C9h
Extended checksum (optional)
D2h Unknown
interrupt
Summary of Contents for Satellite Pro U400 Series
Page 110: ...Test Program for Field Satellite U400 and Satellite Pro U400 Tests and Diagnostics Manual 17 ...
Page 168: ...Replacement Procedures Satellite U400 Satellite Pro U400 PORTEGE M800 Maintenance Manual 4 iv ...
Page 276: ...Pin Assignment 36 Satellite U400 Satellite Pro U400 PORTEGE M800 Maintenance Manual ...
Page 302: ...Wiring Diagrams F 2 Satellite U400 Satellite Pro U400 PORTEGE M800 Maintenance Manual ...