Latitude 7220EX Rugged Extreme Tablet Service Manual

Before working inside the tablet

CAUTION If ATEX label is missing or damaged, the system must not be repaired or recertified by the Service Facility.

WARNING Repair must be performed by a IECEx Certified Service Facility to maintain IECEx certification.

To avoid damaging your tablet, perform the following steps before you begin working inside the tablet:

Ensure that you follow the Safety Instruction.
Ensure that your work surface is flat and clean to prevent the tablet cover from being scratched.
Turn off your tablet.
Disconnect your tablet and all attached devices from their electrical outlets.
Press and hold the power button while the tablet is unplugged to ground the system board.

NOTE To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface simultaneously as touching a connector on the back of the tablet.
Remove any installed ExpressCards or Smart Cards from the appropriate slots.