Lenovo 2522K4U Laptop User Manual


 
1210 System board, DC-in connector cable, and ExpressCard slot
assembly
For access, remove these FRUs, in order:
“1010 Battery pack” on page 85
“1020 ExpressCard blank bezel” on page 86
“1030 Serial Ultrabay Slim device or travel bezel” on page 87
“1040 Hard disk drive (HDD) slot cover, HDD rubber rails and HDD or storage converter and solid state
drive (SSD)” on page 88
“1050 DIMM slot cover” on page 90
“1070 PCI Express Mini Card for wireless WAN” on page 92
“1080 Keyboard” on page 94
“1110 PCI Express Mini Card for wireless LAN” on page 103
“1120 Keyboard bezel assembly, FPC cable, and Bluethooth daughter card (BDC-2.1)” on page 105
“1150 Speaker assembly” on page 112
“1160 LCD unit” on page 114
“1170 Fan assembly” on page 119
“1180 CPU” on page 122
“1190 Base cover assembly, I/O sub card, and I/O sub card cable” on page 123
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 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 at 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, 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.
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 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.
132 ThinkPad T410 and T410i Hardware Maintenance Manual