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Symbol Color Meaning
(3) Caps lock
Green Caps Lock mode is
enabled. All alphabetic
characters (A-Z) are
entered in capital letters
without the Shift key being
pressed. You enable or
disable the Caps Lock
mode by pressing the Caps
Lock key.
(4) Scroll lock
Green Scroll Lock mode is
enabled. The Arrow keys
can be used as
screen-scroll function keys.
The cursor cannot be
moved with the Arrow
keys. Not all application
programs support this
function. You enable or
disable Scroll Lock mode by
pressing the ScrLk key.
(5) Power on
Green The computer is
operational. This indicator is
on when the computer is
on.
(6) Battery status
Green Enough battery power
remains for operation.
Blinking
green
The battery power charges
up to 80% full power
Blinking
orange
The battery pack needs to
be charged
Orange The battery pack is being
charged.
(7) Standby mode
Green The computer is in standby
mode
FRU tests
The following table shows the applicable test for each FRU
using PC-Doctor.
FRU Applicable test
System board
1. CPU/Coprocessor (Diagnostics)
2. System board (Diagnostics)
Power Battery (Diagnostics)
LCD unit
1. Video Adapter (Diagnostics)
2. Video (Interactive Tests)
54 ThinkPad R30/R31 HMM