d.
Keyboard (see
Keyboard on page 47)
e.
Switch cover (see
Switch cover on page 50)
f.
Display assembly (see
Display assembly on page 52)
g.
Top cover (see
Top cover on page 59)
h.
Power switch assembly (see
Power switch assembly on page 63)
i.
System board (see
System board on page 66)
Remove the WWAN antenna board:
1. Remove the two Phillips PM2.0×4.0 screws (1) that secure the WWAN external antenna board to
the base enclosure.
2. Remove the WWAN external antenna board and cable (2).
Reverse this procedure to install the WWAN external antenna board.
Fan/heat sink assembly
Description Spare part number
Fan/heat sink assembly (includes thermal paste and thermal pads) 441143-001
NOTE: To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the right
side and rear panel of the computer. The computer uses an electric fan for ventilation. The fan is
controlled by a temperature sensor and is designed to turn on automatically when high temperature
conditions exist. These conditions are affected by high external temperatures, system power
consumption, power management/battery conservation configurations, battery fast charging, and
software applications. Exhaust air is displaced through the ventilation grill located on the left side
of the computer.
ENWW Component replacement procedures 71
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