Event Description S1/S3 Beep
Low battery
warning beep
N/A 4 short beeps
Critical
Thermal
System POST N/A 3 long beeps
DRAM type
error
PC133 SDRAM
only
N/A 2 long beeps
Responses of
Boot Block
BIOS Flash
Success N/A 2 long, 1 short, and
then 1 long beep
BIOS file size
mismatch
N/A 1 long, 1 short beep
BIOS file
reading error
N/A 1 long, 2 short beeps
Floppy drive not
installed
N/A 2 short beeps
Run Time /
Sleep state
BaySwap
alarm
Inhibit bay swap Yes Continuous 2 short, 1
long beeps .
AC
attach/detach
NO 1 short beep
Power Control
Beep
System enters /
resume from
S1/S3/S4 state.
N/A 1 short beep
Volume control
beep
Volume key
Up/Down
N/A 1 short beep
LCD-Related Symptoms
LCD FRU Replacement Notice
The TFT LCD for the computer contains many
thin-film transistors (TFTs). A small number of
missing, discolored, or lighted dots (on all the time)
is characteristic of TFT LCD technology, but
excessive pixel problems can cause viewing
concerns. The LCD should be replaced if the
number of missing, discolored, or lighted dots in any
background is:
v XGA : 8 or more bright dots, 8 or more dark dots,
or a total of 9 or more bright and dark dots.
46 ThinkPad R30/R31 HMM
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