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Related Service Procedures
This section provides information about the following:
“System Status Indicators”
“I/O Status Indicators”
“How to Run Diagnostics” on page 51
“System Key Combinations” on page 57
System Status Indicators
The system status indicators show the current computer
status in different colors (amber and green).
Symbol Color Meaning
Blinking
green
Speaker sounds.
Green Battery fully charged.
Amber 1 minute or less of battery
power left.
Green Battery charging.
Off Battery charged. (Battery
must be installed for proper
reading.)
Amber PC card in-use.
Amber Diskette drive in-use.
Amber Hard disk drive in-use.
Green Keys in Num Lock mode.
Green Keys in Caps Lock mode.
Green Keys in Scroll Lock mode.
Green Computer in suspend mode.
Green Computer powered-on.
I/O Status Indicators
The I/O status indicators on the front panel of the CD-ROM
drive or the FDD drive indicate the current status.
I/O status Amber CD-ROM in use.
Green Disk Drive in use.
50 IBM Mobile Systems - ThinkPad HMM Volume 3