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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.
For access, remove these FRUs in order:
•
"1010 SIM-card tray" on page 68
•
"1020 External battery pack" on page 68
•
"1030 Keyboard rubbers" on page 69
•
"1050 Base cover assembly" on page 72
•
"1080 Hard disk drive or solid-state drive" on page 76
•
"1090 Wireless-LAN card" on page 77
•
"1100 Wireless-WAN card" on page 78
•
"1110 Memory module" on page 79
•
"1130 Coin-cell battery" on page 81
•
"1180 Smart-card bracket" on page 89
•
"1160 Thermal fan assembly" on page 86
•
"1170 I/O bracket" on page 87
Attention: The following components soldered on the top side of the system board are extremely sensitive.
When you service the system board, avoid any kind of rough handling.
For models with a discrete thermal module
a
Microprocessor
b
Graphics Processing Unit (GPU)
.
Chapter 8
Removing or replacing a FRU
93
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