HP ProBook 4430s, 4431s, 4330s and 4331s Notebook PCs - Maintenance and Service Guide
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HP ProBook 4430s Notebook PC (ENERGY STAR)
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4.
Disco
nnect the modem
module
(3)
from the system board by lifti
ng it straight up.
Reverse this procedure to in
stall the modem module.
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Chapter 4 Remova
l and replacement procedures
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