Brother MFC9700 - 6 ] PC-Driven or Video Capture-Driven Printing

VI - 27
Trouble Action to be taken
(20) Fading (black to white) At the printer side
l Replace the toner cartridge.
l Replace the high-voltage power supply PCB.
(21) Gray background At the printer side
l Instruct the user to use paper of the recommended weight
(less than 36 lb./m
2
).
l Clean the toner sensors (LED and light-receiver).
l Check the toner sensor harnesses.
l Replace the toner cartridge.
l Replace the drum unit.
l Replace the high-voltage power supply PCB.
(22) Toner specks At the printer side
l Instruct the user to use paper of the recommended weight
(less than 36 lb./m
2
).
l Replace the toner cartridge.
l Replace the drum unit.
[ 6 ] PC-driven or video capture-driven printing
Trouble Check:
(1) PC-driven printing is
impossible.
• Interface with the host computer
• PC interface cable
• Main PCB
• Centronics interface
(2) Video capture-driven printing
is impossible
• VC connector PCB
• Main PCB
• Centronics interface
(3) Video printing is impossible. • VC connector PCB
• Main PCB