Lenovo ThinkPad R61e Hardware Maintenance Manual - Page 99
System, board, Card/ExpressCard, slots, assembly
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Removing and replacing a FRU 1170 System board, PC Card/ExpressCard slots assembly Important notices for handling the system board When handling the system board, bear the following in mind. v At every point in the process, be sure not to drop or stack the system board. 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 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 57 v "1020 Ultrabay Enhanced device for R61 and R61i" on page 58 v "1030 Hard disk drive cover, hard disk drive, and hard disk drive rubber rails" on page 59 v "1040 Palm rest or palm rest with fingerprint reader" on page 61 v "1060 Keyboard" on page 65 v "1070 Optical drive for R61e and R61i" on page 67 v "1080 Modem daughter card (MDC-1.5)" on page 68 v "1090 PCI Express Mini Card for wireless LAN" on page 70 v "1110 Keyboard bezel and speakers" on page 73 v "1120 Fan assembly" on page 76 v "1140 LCD assembly" on page 80 v "1150 Base cover, USB sub card with cable, and PC Card/ExpressCard (or PC Card/Smart Card) bezel assembly" on page 83 v "1160 Structure frame and IEEE 1394 sub card" on page 88 ThinkPad R61, R61e, and R61i (15.4-inch widescreen) 93