Lexmark 2380 - Forms Printer B/W Dot-matrix Service Manual page 136

Note: The 2381 and 2391 have six cover latches that secure the top
cover to the bottom cover.
10.While lifting the top cover slightly, disconnect the operator panel
cable [7] from the sub logic board and then remove the top
cover.
Reinstallation Note:
•
Be sure that the operator panel cable is correctly aligned and
inserted securely.
WARNING: Damage to the operator panel cable may cause failure
of other electrical components of the printer. Be sure not to crimp or
pinch this cable while reinstalling the top cover.
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