Brother MFC9100C Service Manual page 203

[ 5 ] Print-image related
If the received or sent image has any problem, first make a copy with the facsimile equipment.
If the copied image is normal, the problem may be due to the remote terminal; if it is abnormal,
proceed to the following checks:
Trouble
(1) Completely blank
(2) Random color
(3) All black
Jobs enclosed by parentheses (♦ ) require the special adjustment jig.
At the scanner
Check the following components:
- CCD flat cable
- CCD unit
- Main PCB
At the printer
• Check the ink cartridges. If any cartridges have run out of ink,
replace them.
• Check the dimple contact between the print head PCB and the
carriage PCB. Clean it if contaminated.
(♦ If the problem persists, replace the carriage ASSY.)
• Check the connection of the head flat cables on the main PCB.
(♦ If either of those cables is broken or damaged, replace the
carriage ASSY.)
• Replace the main PCB.
At the scanner
Check the following components:
- CCD flat cable
- CCD unit
- Main PCB
At the printer
Check the following components:
- Print head unit
- Main PCB
- Carriage ASSY (♦ Replace the carriage ASSY.)
VI - 19
Action to be taken