IBM ThinkPad R30 Hardware Maintenance Manual page 50

Error Message
Code
Parity Check 1
nnnn
Parity Check 2
nnnn
Press F1 to
resume, F2 to
Setup, F3 for
previous
Press F2 to enter
Setup
PS/2 Mouse:
Run the I2O
Configuration
Utility
44
ThinkPad R30 and R31 HMM
Meanings
Parity error found in
the system bus.
BIOS attempts to
locate the address
and display it on
the screen. If it
cannot locate the
address, it displays
????. Parity is a
method for
checking errors in
binary data. A parity
error indicates that
some data has
been corrupted.
Parity error found in
the I/O bus. BIOS
attempts to locate
the address and
display it on the
screen. If it cannot
locate the address,
it displays ????.
Displayed after any
recoverable error
message. Press F1
to start the boot
process or F2 to
enter Setup and
change the
settings. Press F3
to display the
previous screen
(usually an
initialization error of
an Option ROM,
i.e., an add-on
card). Write down
and follow the
information shown
on the screen.
Optional message
displayed during
POST. Can be
turned off in Setup.
PS/2 mouse
identified.
One or more
unclaimed block
storage devices
have the
Configuration
Request bit set in
the LCT. Run an
I2O Configuration
Utility (e.g. the SAC
utility).
Comment
IBM
customized
"F2" to "F1"