Related Service Procedures
This section provides information about the following:
“Status Indicators.”
“Power Switch” on page 25.
“Running PQA Diagnostics Program” on page 25.
“Fn Key Combinations” on page 30.
Status Indicators
The system status LED indicators show the current
computer status in green and amber using symbols. The
following shows the location of each symbol and the
meaning of each indicator.
Symbol Color Meaning
.1/ Battery Green Enough battery power
remains for operation.
Orange The battery pack is being
charged.
The battery pack needs
charging. When the lamp
starts blinking orange, the
computer beeps three
times.
Blinking
orange
.2/ Hard disk or
CD-ROM in use
Orange Appears when data is read
from or written to the hard
disk or read from the
CD-ROM. Do not enter
hibernation mode or turn off
the computer when this
indicator is on.
.3/ Numeric lock Green Indicates that the numeric
keypad on the keyboard is
enabled. The keypad is
enabled and disabled by
pressing and holding the
Shift key, and pressing the
NumLk key.
24 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM
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