Lenovo 01964YU User Manual - Page 98

System board and fan assembly, Important notices for handling the system board, Diagnostics

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1120 System board and fan assembly Important notices for handling the system board: When handling the system board, bear the following in mind. v The system board has an accelerometer, which can be broken by applying several thousands of G-forces. 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. v Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite. v If a system board is dropped, you must test it, using PC-Doctor for DOS, to make sure that the HDD Active Protection still functions (see below). 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. v Avoid rough handling of any kind. v At every point in the process, be sure not to drop or stack the system board. v If 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 PC-Doctor for DOS to make sure that HDD Active Protection still functions. The procedure is as follows: 1. Place the computer on a horizontal surface. 2. Run Diagnostics --> ThinkPad Devices --> HDD Active Protection Test. 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 (BDC-2)" on page 87 v "1110 Speaker assembly" on page 88 90 ThinkPad Edge 13″ and E30 Hardware Maintenance Manual

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1120 System board and fan assembly
Important notices for handling the system board:
When handling the system board, bear the following in mind.
v
The system board has an accelerometer, which can be broken by applying
several thousands of G-forces.
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.
v
Be careful not to drop the system board on a bench top that has a hard
surface, such as metal, wood, or composite.
v
If a system board is dropped, you must test it, using PC-Doctor for DOS, to
make sure that the HDD Active Protection still functions (see below).
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.
v
Avoid rough handling of any kind.
v
At every point in the process, be sure not to drop or stack the system board.
v
If 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 PC-Doctor for DOS to make sure that
HDD Active Protection still functions. The procedure is as follows:
1.
Place the computer on a horizontal surface.
2.
Run
Diagnostics
-->
ThinkPad Devices
-->
HDD Active Protection Test
.
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 (BDC-2)” on page 87
v
“1110 Speaker assembly” on page 88
90
ThinkPad Edge 13
″
and E30 Hardware Maintenance Manual