You can refer to this Service Manual for Latitude X1 which will show all the components of this computer.
Observe the following safety precautions before performing any steps:
1. Turn off the system and disconnect any attached peripherals including the battery and the AC adapter (printer, USB flash drives, SD card, ethernet cable).
2. Once done, press and hold the power button for 10-15 seconds.
Start with disconnecting the keyboard. Remove the seven screws labeled "K" from the bottom of the computer. Hereafter, follow the sequence as shown in the link for disassembling system board.
Hope this helps.
Please reply if you have any further questions.
Thanks and Regards,
Already have the board and recently downloaded what is supposed to be the Dell repair manual. I see a series of images but still cannot tell whether the proceedure begins from the keyboard side or the bottom. I have significant experience with desktop boards and some with notebooks. Hoping I can connect with one who has changed this particular board. I have uploaded the service manual images I have and can share it if needed. Much thanks in advance for an informed response.