Dell P2421D Service Manual page 17

Connect all the cable of the rear cover and put it on a protective cushion. Use a Philips-head screwdriver to lock 11 screws

for locking the middle plastic bezel with the whole unit, and then assemble the middle plastic bezel carefully.

size=M3x4, Torque=3± 0.5kgfxcm)

Assemble the rear cover

Use a Philips-head screwdriver to lock four screws on the rear cover

(No.1~4 screw size=M4x10; Torque: 12± 2kgf.cm)

(No.1~20 screw

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