55
Lenovo ideapad 720-15IKB
1100 System board and touch pad
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 36
• “1030 PCI Express Mini Card for wireless LAN” on page 38
• “1040 DIMM” on page 40
• “1050 Hard disk drive and SSD card” on page 41
• “1060 Speakers” on page 44
• “1070 Fan and heat sink assembly” on page 45
• “1080 Upper case” on page 48
• “1090 I/O board, backup battery and fingerprint board” on page 51
Figure 10. Removal steps of system board and touch pad
Disconnect the connectors in the directions shown by arrows
1
,
B
and
C
.
Then remove the screws
D
.
b
d
a
d
c
Step Screw (quantity)
Color
Torque
D
M2 × 3 mm, Phillips-head (2) M/B---log up
Bronze 1.7-2.2 kgf.cm
