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Symptom
Printing
Blotches or blank ink appears
quality
after cleaning the print head.
error
Lines that the printing data
does not contain are printed.
Soiled paper
Pictures or characters are
extended in print results.
Scanning
The Contact Sensor drive
errors
motor does not run.
The Scanned images are
abnormal.
The image has vertical stripes.
The colors or the brightness of
the image is abnormal.
*1 The absorption amount of the waste ink absorber is set based upon the amount that the BJ cartridge has
ejected. The settings of the waste ink capacity are stored in EEPROM of MAIN board. When replacing the MAIN
board, check the waste ink capacity before the replacement, and input the waste ink capacity at the new MAIN
Solution
(1) Remove the print head and reinstall
it.
(2) Perform the cleaning on the print
head five times with the cleaning
operation and print out the nozzle
check pattern. Visually check the
test print for non-discharge of ink
from
nozzle. (Fig. 1-1)
(3) Replace the print head. *2
(4) Replace the appropriate ink tank.
(5) Replace the purge unit.
(6) Replace the carriage unit.
(7) Replace the MAIN board. *1
(8) Replace the MAIN board.
(1) Feed a few sheets of paper through
the machine.
(2) Clean the paper feed section with a
clean cloth or a clean cotton bud.
<Carriage scanning direction>
(1) Check whether grease is applied to
the carriage encoder film.
(2) Carefully and gently wipe the
carriage encoder film using lint-free
paper moistened with
alcohol.
Do not scratch the surface of the
carriage encoder film.
(3) Replace the carriage encoder film.
(4) Replace the carriage unit.
<Paper feeding direction>
(1) Check whether grease is applied to
the paper feed encoder film.
(2) Carefully and gently wipe the paper
feed encoder film using lint-free
alcohol.
paper moistened with
Do not scratch the surface of the
paper feed encoder film.
(3) Replace the paper feed encoder
film.
(4) Replace the timing sensor unit.
(1) Check the connection between the
contact sensor drive motor and the
MAIN board (J8).
(2) Replace the scanner unit.
(3) Replace the MAIN board.
(1) Check the connection between the
contact sensor and the MAIN board
(J8).
(2) Replace the scanner unit.
(3) Replace the MAIN board.
(1) Clean the document glass.
(2) Check the connection between the
contact sensor and the MAIN board
(J8).
(3) Replace the scanner unit.
(4) Replace the MAIN board.
1-10
Remarks
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