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2–26 Maintenance and Service Guide
Troubleshooting
Flowchart 2.18—Nonfunctioning Keyboard
Y
N
Keyboard
operating
properly?
Keyboard
not operating prop-
erly.
External
device
works?
Replace
system
board.
Replace
system
board.
Connect computer
to good external key-
board.
Reseat internal key-
board
connector
(if applicable).
Replace internal
keyboard or
cable.
Y
N
Y
N
Done Done
Keyboard
operating
properly?