Dell Precision M4400 Service Manual page 46

Mobile workstation
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3. Lower the palm rest onto the computer ensuring that the cable to the I/O board is not pinched and the RJ-11 connector is properly seated.
 
4. Angle and connect the right side of the palm rest, then lower and snap the left side into place.
 
5. Turn the computer assembly upside down with the front edge toward you, and tighten the three captive screws:
 One near the front of the right-side edge of the laptop
l
 One in the middle of the left side edge of the laptop
l
 One near the upper left corner, marked with an "S"
l
 
6. Turn the computer topside up.
 
7. Place the thermal plate into position, then replace the four M2.5 x 5-mm screws to secure it.
 
8. Connect the contactless smartcard cable, the touchpad cable, the speaker cable, the wireless switch cable, and the fingerprint reader cable (optional) to
the system board.
 
9. Turn the computer over and replace the ten M2.5 x 5.5-mm screws and the one M2.5 x 8-mm screw on the bottom of the computer to secure the palm
rest.
 
10. Replace the discrete graphics heat sink (see
 
11. Replace the processor heat sink (see
 
12. Replace the fan (see
Replacing the
 
13. Replace the optical drive (see
 
14. Turn the computer topside up and replace the keyboard (see
 
15. Replace the display assembly (see
 
16. Replace the hinge covers (see
 
17. Replace the bottom of the base assembly (see
 
18. Replace the optical drive (see
 
19. Replace the hard drive (see
 
20. Follow the procedure
After Working on Your
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Replacing the Discrete Graphics Heat
Replacing the Processor Heat
Fan).
Replacing the Modular
Drive).
Replacing the
Display
Assembly).
Replacing the Hinge
Covers).
Replacing the Bottom of the Base
Replacing the Modular
Drive).
Replacing the Hard
Drive).
Computer.
Sink).
Sink).
Keyboard).
Assembly).

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