1220 System Board, Interposer Card, And Base Cover - Lenovo ThinkPad R51e Series Hardware Maintenance Manual

Removing and replacing a FRU
1220 System board, interposer card,
and base cover
For access, remove these FRUs, in order:
v "1010 Battery pack" on page 76
v "1020 Ultrabay Enhanced device (for R52 series)" on
page 77
v "1030 Hard disk drive" on page 79
v "1040 DIMM (optional)" on page 81
v "1050 Keyboard" on page 82
v "1060 Ultrabay device (for R50e series)" on page 86
v "1070 DIMM (standard)" on page 87
v "1080 Modem daughter card (MDC-2)" on page 88
v "1090 Bluetooth/Modem daughter card (BMDC-3) (for
R52 series)" on page 90
v "1100 Keyboard bezel" on page 92
v "1120 Mini PCI adapter" on page 99
v "1130 Fan assembly" on page 103
v "1140 CPU" on page 104
v "1150 Backup battery" on page 105
v "1160 Speaker assembly" on page 106
v "1180 PC Card slot assembly" on page 111
v "1190 Ultrabay Enhanced shield kit" on page 114
v "1200 LCD assembly" on page 121
v "1210 VGA and Ultrabay Enhanced device eject button
cable" on page 125
Important notice for handling the system board in R52
series:
Security chip a is soldered on the underside of the
system board in some models as in this figure.
(continued)
128
R50e, R51e and R52 Series
a