1200 System board, interposer card,
and base cover
For access, remove these FRUs, in order:
v “1010 Battery pack” on page 67
v “1020 Ultrabay Enhanced device” on page 68
v “1030 Hard disk drive” on page 69
v “1040 DIMM (optional)” on page 71
v “1050 Keyboard” on page 72
v “1060 DIMM (standard)” on page 76
v “1070 Modem daughter card (MDC/MDC-2)” on page 77
v “1080 Bluetooth/Modem daughter card
(BMDC/BMDC-2)” on page 79
v “1090 Keyboard bezel” on page 81
v “1100 Mini PCI adapter” on page 85
v “1110 Fan assembly” on page 89
v “1120 CPU” on page 90
v “1130 Backup battery” on page 91
v “1140 Speaker assembly” on page 92
v “1150 IEEE 1394 cable” on page 94
v “1160 PC Card slots assembly” on page 97
v “1170 Ultrabay Enhanced shield kit” on page 98
v “1180 LCD assembly” on page 105
v “1190 VGA and Ultrabay Enhanced device eject button
cable” on page 109
Important notice for handling the system board:
In ThinkPad R50 series, the security chip a is soldered
on the underside of the system board in some models as
in this figure.
a
(continued)
Removing and replacing a FRU
112 R50/R50p, R51 Series
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