1120 System board and fan assembly
Important notices for handling the system board:
When handling the system board, bear the following in mind.
vThe system board has an accelerometer, which can be broken by applying several thousands of
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 6,000 G’s of shock.
vBe careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite.
vIf a system board is dropped, you must test it, using
Note: If the test shows that HDD Active Protection is not functioning, be sure to document the drop in any reject report, and replace the system board.
vAvoid rough handling of any kind.
vAt every point in the process, be sure not to drop or stack the system board.
vIf you put a system board down, be sure to put it only on a padded surface such as an ESD mat or conductive corrugated material.
After replacing the system board, run
HDD Active Protection still functions. The procedure is as follows:
1.Place the computer on a horizontal surface.
2.Run Diagnostics
Attention: Do not apply physical shock to the computer while the test is running.
For access, remove these FRUs in order:
v“1010 Battery pack” on page 68
v“1020 Bottom slot cover” on page 70
v“1030 DIMM” on page 72
v“1040 Hard disk drive (HDD)” on page 73
v“1050 PCI Express Mini Card for wireless LAN” on page 75
v“1060 PCI Express Mini Card for wireless WAN” on page 77
v“1070 Keyboard” on page 79
v“1080 Top case assembly and microphone module” on page 82
v“1090 Backup battery” on page 86
v“1100 Bluetooth daughter card
v“1110 Speaker assembly” on page 88
