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Troubleshooting Symptom Charts/Peripherals - 23
Cursor moves, but
clicking trackpad
button has no effect
1 Reset power manager.
2 Clean trackpad connections.
3 Check keyboard and logic board connections.
4 Examine trackpad ∑∑button for damage. If OK, reseat and
try again. If ∑∑button still fails, replace it.
5 Replace trackpad.
6 Replace keyboard.
7 Replace logic board.
Note:
When replacing the logic board, check that the serial port
EMI clip is attached to the bottom of the CPU stiffener. If it is
missing, replace the stiffener. On international units, also
replace the stiffener if the modem EMI clip is missing. The “CPU
Stiffener” topic in Take Apart helps you locate and identify the
two EMI clips.