Lenovo ThinkPad L512 Hardware Maintenance Manual - Page 97

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

Page 97 highlights

Step 1 2 Screw (quantity) M2 × 3 mm, flat-head, nylon-coated (2) M2 × 5 mm, flat-head, nylon-coated (3) Color Black Black Torque 0.181 Nm (1.85 kgfcm) 0.181 Nm (1.85 kgfcm) 1200 System board assembly • To identify the system board originally installed in your computer, go to PEW at the following web site: http://www.lenovo.com/support/site.wss/document.do?lndocid=LOOK-WARNTY Select Warranty Lookup. Input the machine type and the serial number. Use the system board listed on PEW. Important notices for handling the system board: When handling the system board, bear the following in mind. • The system board has an accelerometer, which can be broken if 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 6,000 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. • If a system board is dropped, you must test it, using PC-Doctor for DOS if the system supports PC-Doctor for DOS, to make sure that the HDD Active Protection System™ still functions. Note: If the test shows that the HDD Active Protection System is not functioning, be sure to document the drop in a reject report, and replace the system board. • 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 surface. If the system supports PC-Doctor for DOS, after replacing the system board, run PC-Doctor for DOS to make sure that the HDD Active Protection System 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: • 1010 Battery pack • 1020 ExpressCard blank bezel and Media Card blank bezel • 1030 Optical drive or travel cover • 1040 Thermal cover • 1050 Hard disk drive (HDD) assembly • 1060 DIMM • 1070 Fan assembly • 1080 CPU • 1090 SIM slot cover • 1100 Wireless WAN slot cover and PCI Express Mini Card for wireless WAN • 1110 Palm rest assembly with cables Chapter 8. Removing and replacing a FRU 91

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Step
Screw (quantity)
Color
Torque
1
M2 × 3 mm, flat-head, nylon-coated (2)
Black
0.181 Nm
(1.85 kgfcm)
2
M2 × 5 mm, flat-head, nylon-coated (3)
Black
0.181 Nm
(1.85 kgfcm)
1200 System board assembly
To identify the system board originally installed in your computer, go to PEW at the following web site:
Select Warranty Lookup. Input the machine type and the serial number. Use the system board listed on
PEW.
Important notices for handling the system board:
When handling the system board, bear the following in mind.
The system board has an accelerometer, which can be broken if 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 6,000 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.
If a system board is dropped, you must test it, using PC-Doctor for DOS if the system supports PC-Doctor
for DOS, to make sure that the HDD Active Protection System
still functions.
Note:
If the test shows that the HDD Active Protection System is not functioning, be sure to document the
drop in a reject report, and replace the system board.
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 surface.
If the system supports PC-Doctor for DOS, after replacing the system board, run PC-Doctor for DOS to
make sure that the HDD Active Protection System 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:
1010 Battery pack
1020 ExpressCard blank bezel and Media Card blank bezel
1030 Optical drive or travel cover
1040 Thermal cover
1050 Hard disk drive (HDD) assembly
1060 DIMM
1070 Fan assembly
1080 CPU
1090 SIM slot cover
1100 Wireless WAN slot cover and PCI Express Mini Card for wireless WAN
1110 Palm rest assembly with cables
Chapter 8
.
Removing and replacing a FRU
91