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• 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 six 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.
For access, remove these FRUs in order:
•
"1010 Removable battery" on page 57
•
"1020 Base cover assembly" on page 57
•
"1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive
bracket" on page 64
•
"1060 Wireless LAN card" on page 66
•
"1070 Wireless WAN card" on page 67
•
"1130 Thermal fan" on page 73
•
"1140 Speaker assembly" on page 75
Attention: The microprocessor
you service the system board, avoid any kind of rough handling.
80
Hardware Maintenance Manual
a
and GPU
b
soldered on the system board are extremely sensitive. When
b
a
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