Lenovo 2518C3U User Manual - Page 140
System board, DC-in connector cable, and ExpressCard slot assembly
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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 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, 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