Troubleshooting and Repair 4-17
Table Section 4-5 Diagnostic Output and Beep Codes
Code
Beeps
Description of Test or Failure at POST
9A
shadow option ROMs
9C
set up power management
9E
enable hardware interrupts
A0
set time of day
A2
check key lock
A4
initialize typematic rate
A8
erase F2 prompt
AA
scan for F2 key stroke
AC
enter Setup
AE
clear in-POST flag
B0
check for errors
B2
POST done – prepare to boot operating system
B4
one beep
B6
lock password information
B8
clear global description table
BC
clear parity checkers
BE
clear screen
BF
check virus and backup reminders
C0
try to boot with INT 19
D0
interrupt handler error
D2
unknown interrupt error
D4
pending interrupt error
D6
initialize option ROM error
D8
shutdown error
DA
extended block move
DC
shutdown 10 error