Brother FAX-750 Service Manual page 61

(9) To replace the main frame with a new one, first check to see which position the head adjuster
is currently set in (see the three positions in the illustration below), and then remove the head
adjuster with a flat screwdriver. Next set it to the new main frame in the same position.
If the printed image is abnormally light or dark, remove the head adjuster and set it back in any
other position.
NOTE: Do not access the head adjuster unless necessary.
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Reassembling Notes
• Before reinstalling the recorder frame, check its top end (on which paper and ribbon pass) for
scratches or burrs. Those on the top end will affect the printed image.
• When reinstalling the recording head ASSY, make sure that the three head springs are set into
place.
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