Lenovo E470, Hardware Maintenance Manual

Page: 83 / 104

Remove the speaker assembly.
When installing:
Ensure that the cables are properly connected.
1110 System board and thermal fan assembly
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 0.15 m (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 Bottom cover” on page 65
• “1020 Internal storage drive” on page 66
• “1030 Memory module” on page 68
• “1040 Wireless LAN card” on page 69
• “1050 Coin-cell battery” on page 69
• “1060 Keyboard” on page 70
• “1070 Battery pack” on page 72
• “1080 Keyboard bezel assembly” on page 73
• “1090 Speaker assembly” on page 75
Chapter 9
.
Removing or replacing a FRU
77