53
Lenovo ideapad 320S-15ISK/ideapad 320S-15IKB
1100 System board
Important notices for handling the system board:
When handling the system board, bear the following in mind.
• Be careful not to drop the system board on a bench top that has a hard surface,
such as metal, wood, or composite.
• Avoid rough handling of any kind.
• During the whole process, make sure not to drop or stack the system board.
• If you put a system board down, make sure to put it only on a padded surface such
as an ESD mat or conductive corrugated material.
For access, remove these FRUs in order:
• “1010 Base cover” on page 33
• “1020 Battery pack” on page 35
• “1030 PCI Express Mini Card for wireless LAN” on page 37
• “1040 DIMM” on page 39
• “1050 Hard disk drive" on page 41
• “1060 Speakers” on page 43
• “1070 Fan assembly and Heat Sink assembly” on page 44
• “1080 IO board and backup battery” on page 48
• “1090 Upper case” on page 50
Figure 10. Removal steps of system board
Disconnect the connectors in the directions shown by arrows
1
to
4
.
Then remove the screws
5
.
c
e
e
e
a
b
d
Step Screw (quantity)
Color Torque
4
M2 × 3 mm, Phillips-head, nylok-coated (1)
M/B---log up
Black 1.0~1.5 kgf*cm
5
M2 × 3 mm, Phillips-head, nylok-coated (3)
M/B---log up
Silver 1.0~1.5 kgf*cm
