Brother MFC845CW Manual De Servicio página 125

Problemas por funcionamiento defectuoso de la máquina
Check
Head/carriage unit
Maintenance unit
CIS unit
[ 4 ] Funcionamiento defectuoso del Auto document feeder (ADF)
Una falla en el ADF puede ocurrir no solamente debido al funcionamiento defectuoso de la máquina sino debido
a acciones del usuario.
Problemas debido a acciones del usuario
Check
Document guides
On the upper SDF
Chute
Inside the ADF
Scanner cover
(Scanner unit)
Possible causes
- Air bubbles, high viscosity ink, or
foreign materials have found their way
into the head/carriage unit.
- Head flat cables are broken
- The carriage-head flat cable has not
been inserted into the carriage PCB
- Air bubbles, high viscosity ink, or
foreign materials have found their way
into the head/carriage unit
- Torque not transmitted
- Drain tube bent or pinched.
The CIS unit is weak in identifying
colors
Possible causes
Document guides are not positioned so as
to coincide with the width of the
document in place.
- Foreign materials have found their way
into the ADF
- The size of the document loaded
Is smaller than the specified size.
The scanner cover is not closed properly.
4-38
Problems that may result
Dot missing occurs on the printout
The machine will not be able to
print or drive the head/carriage
unit
Head cleaning operation will not be
possible and/or the maintenance unit
will not work..
The quality of print colors in
copying operation will be low.
Problems that may result
Documents get skewed
Foreign materials can hinder
document feeding.
The document will jam inside the
ADF.
The "Cover is Open" message
will appear and the machine will
no longer operate.
Confidencial