Lexmark C78x Service Manual page 323

5.
Clip the cable ties (C).
6.
Remove the system board.
Note: When reinstalling the system board, verify the input and output option cables are fully connected.
Replace all cable ties.
To verify the input sources are recognized:
1.
On the operator panel, at the Ready prompt, select Paper Menu.
2.
Select Paper Source.
3.
Make sure all installed options are listed.
To verify the output options are recognized:
1.
At the Ready prompt, select Paper Menu.
2.
Select Output Bin.
3.
Make sure all installed options are listed.
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Repair information