Brother FAX4750 Service Manual page 60

1.8 Top Cover (Exit Roller, Speaker, and Document Guides)
(1) Disconnect the hook switch harness* and speaker harness from the main PCB.
*For models equipped with a handset
(2) Remove the harness support rubbers to release the hook switch harness*.
(3) Release the scanner motor harness and CIS harness from the hooks provided on the top
cover.
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