Brother MFC845CW Manual De Servicio página 118

Problem
(4) Light
(5) Dark
(6) Straight or blurred vertical
stripes
At the scanner
Check the following components:
- Scanner cover (CIS unit)
- Main PCB
At the printer
Check the following components:
- Ink cartridges
- Head/carriage unit and carriage PCB ASSY
- Main PCB
- Power supply PCB
- Head property data (Refer to
- Maintenance unit
At the scanner
Check the following components:
- Scanner cover (CIS unit)
- Main PCB
At the printer side
•
Perform the purging operation (Function code 76) several times
to remove dust or air bubbles from its nozzles. If the problem
persists, replace the head/carriage unit. (Refer to
Section 9.1.4.21.)
Check the following components:
- Ink cartridges
- Head/carriage unit and carriage PCB ASSY
- Main PCB
- Power supply PCB
- Head property data (Refer to
- Maintenance unit
Scanner
Check the following components:
- Scanner cover (CIS unit)
- Scanner glass
Printer
•
Check whether paper is coming into contact with any
components other than the ones it should during ejecting.
•
Check the CR encoder strip for stains or scratches. (If the CR
encoder strip is not hooked properly, correct it.)
4-31
Action to be taken
Chapter 9, Section 9.1.4.17.)
Chapter 9, Section 9.1.4.17.)
Chapter 9,
Confidential