Brother MFC845CW Manual De Servicio página 120

Problem
(10) Horizontal White Lines
(11) Top and bottom page
margins stained.
(12) Lines either superimposed or
separated over entire page
(13) Lines either superimposed or
separated along bottom margin
(14) Ghost
VWXYZ
•
Perform the purge operation (Function Code 76) several times
to remove dust or air bubbles (See
•
Replace the head/carriage unit
•
Check the paper feed-related rollers
•
Check the pitch or slant compensation on the printer head using
the Printer Head Adjustment
•
Clean the covers and head cleaners on the maintenance unit with a
Rubycel stick. For cleaning procedures See
"CLEANING THE MAINTENANCE UNIT"
Printer
•
Press the Ink Key (Ink Management) to perform the cleaning operation.
•
Check that the head/carriage unit is in place.
•
Check the head/carriage unit height adjustment mechanism.
(See Chapter 3, Section 3.2.2.3.)
•
If the "Head-platen space offset" is activated in AMS 02 safe switch
mode (Function Code 88), align the vertical printing lines (Function Code
65). (See Chapter 9, Sections 9.1.4. 25 y 9.1.4.15.)
•
Adjust paper feed roller correction values with Function Code
58 in maintenance mode. (See
•
Perform a pitch compensation on the printer head using
the Printer Head Adjustment Lever (See
•
Adjust paper feed roller correction values with Function Code
58 in maintenance mode. (See
•
Adjust paper feed roller and paper ejection roller correction values with
Function Code 58 in maintenance mode.
(See Chapter 7, Section 7.2, [ 5 ].)
•
Correct the head/carriage unit positioning error with Function Code 63
in maintenance mode. (See
•
Replace PF encoder disk
•
Replace PF encoder PCB
4-33
Action to be taken
Chapter 9, Section 9.1.4.21.)
Lever. See Chapter 7, Section 7.2, [ 4 ].
Chapter 8, Section 8.1
Chapter 7, Section 7.2, [ 5 ].)
Chapter 7, Section 7.2, [ 4 ].)
Chapter 7, Section 7.2, [ 5 ].)
Chapter 7, Section 7.2, [ 4 ].)
Confidencial