Remove The Speakers; Remove The Usb Board - Lenovo N22–20 Hardware Maintenance Manual

Table 4. Screw specifications
Number
Screw
location
Battery 3
pack to
base cover
Refer to Table 12 "Part numbers for FRUs (CRUs)" on page 43 to look up the Lenovo part numbers of the
following replacement parts:
Battery pack

Remove the speakers

Make sure the following FRUs (CRUs) have been removed.
"Remove the upper case (with keyboard)" on page 25
"Remove the battery pack" on page 27
Step 1. Unplug the speakers' cable from the system board.
Figure 7. Unplug the speakers' cable from the system board
Step 2. Carefully remove the speakers off the piles.
Refer to Table 12 "Part numbers for FRUs (CRUs)" on page 43 to look up the Lenovo part numbers of
replacement speakers.

Remove the USB board

Make sure the following FRUs (CRUs) have been removed:
"Remove the upper case (with keyboard)" on page 25
"Remove the battery pack" on page 27
"Remove the speakers" on page 28
Step 1. Open the two sockets and then remove the cable that connects the USB board to the system board.
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Hardware Maintenance Manual
Specifications
M2 × 3mm, flat-head, nylon-coated
Torque
Color
Black
1.85 +/-
0.15kgf-cm