– For discrete-graphics models
1160 System board
Important notices for handling the system board
When handling the system board, read the following:
• The system board has an accelerometer, which can be broken when several thousands of G-forces
are applied.
Note: Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench
can subject the accelerometer to as much as 6000 G's of shock.
• 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.
• At every point in the process, be sure not to drop or stack the system board.
• If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a
corrugated conductive material.
Note: Before you start the servicing, disable the built-in battery. See "Disabling the built-in battery"
on page 64.
For access, remove these FRUs in order:
•
"1010 Removable battery" on page 64
•
"1020 Micro SIM card" on page 65
•
"1030 Base cover assembly" on page 66
•
"1040 Memory module" on page 68
•
"1050 Internal storage drive" on page 69
• "1060 Wireless-WAN card" on page 73 or "1080 M.2 solid-state drive in the Wireless-WAN-card slot"
on page 76
•
"1070 Wireless-LAN module or WiGig module" on page 74
•
"1090 Keyboard" on page 77
•
"1100 Coin-cell battery" on page 79
•
"1110 Speaker assembly" on page 80
•
"1120 Built-in battery" on page 81
•
"1130 Smart-card reader assembly" on page 82
•
"1140 I/O bracket and RJ45 bracket" on page 83
•
"1150 Thermal fan assembly" on page 84
86
T470 Hardware Maintenance Manual