Lexmark CX310 Service Manual page 310

Note: Do not use tools when disconnecting the ribbon cables from the JPH1 and JLCD1 connectors on the
controller board to avoid damage.
4
Remove the controller board.
5
Remove all USB grounding contacts (C) from the controller board.
Installation notes:
•
Install the USB grounding contacts on the new controller board.
Repair information
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