Brother MFC9100C Service Manual page 206

Trouble
(10) White horizontal streaks
(11) Stained leading edge of
recording paper
[ 6 ] PC-driven or video capture-driven printing
Trouble
(1) PC-driven printing is
impossible.
(2) Video capture-driven
printing is impossible
(3) Video printing is impossible.
Jobs enclosed by parentheses (♦ ) require the special adjustment jig.
• For each of the four ink-jet units, perform the head purging
operation several times to remove dust or air bubbles from its
nozzles.
• Replace the print head unit.
• Check the paper feed-related rollers. (♦ Replacement of the
paper feed roller or paper ejection roller requires the special
adjustment jig.)
At the printer
• Clean the nozzle ends of the ink-jet units.
• (♦ Adjust the head-platen gap by turning the eccentric bushings
on the carriage rail.)
• Interface with the host computer
• PC interface cable
• Main PCB
• Centronics interface
• VC connector PCB
• Main PCB
• Centronics interface
• VC connector PCB
• Main PCB
VI - 22
Action to be taken
Check: