5 ] Print-Image Related - Brother MFC5100C Service Manual

[ 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
At the scanner
Check the following components:
- CCD flat cable
- Main PCB/Relay PCB
- CCD unit
At the printer
• Check the ink cartridges. If any cartridges have run out of ink,
replace them.
• Check the dimple contact between each of the print head PCB
and the mating 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 it.)
• Replace the main PCB.
• Clean the head caps and wiper of the purge unit with a
Rubycel stick. For the cleaning procedure, refer to "Cleaning
the purge unit" given on page 6-23.
At the scanner
Check the following components:
- CCD flat cable
- CCD unit
- Main PCB/Relay PCB
At the printer
Check the following components:
- Print head unit
- Main PCB
- Carriage ASSY
6 -1 9
Action to be taken