Prior Confirmation - Brother GTX-4 Service Manual

Prior confirmation

Before starting the check flow, be sure to carry out following confirmation.
Items to be checked
Is the cap contaminated?
Is there any deposit of ink
around the nozzle
surface?
Is the wiper contaminated?
Is there any indication of
scar or deformation on the
wiper?
Is the wiper cleaner
contaminated?
Is the wiper cleaner dried?
Is the flushing foam
floated?
Is the ink accumulated on
the flushing foam?
Is the waste ink tube bent
in the middle?
Is the tip of the waste ink
tube touching the waste
tank bottom?
Is the tube correctly
connected to the head?
Is the ink pouch properly
attached to the cartridge?
Is the tube filled with ink?
Description
When the cap is contaminated, it cannot fully
contact the head, which would lead to
suction failure.
When the surrounding area of nozzle
surface is contaminated, it could lead to
ejection failure since the wiper cannot clean
the nozzle surface properly. Or, it could
reduce the adhesion between the nozzle
and cap, thereby causing ink suction failure.
When the wiper tip is contaminated, it could
lead to ejection failure since the wiper
cannot clean the nozzle surface properly.
When the wiper has any scar or
deformation, it could lead to ejection failure
since the wiper cannot clean the nozzle
surface.
If the wiper cleaner is contaminated, residual
dirt on the wiper may prohibit the wipers
cleaning function.
If the wiper cleaner is dry, it may prohibit the
wiper's proper function to wipe clean.
If the flushing foam is not placed
appropriately, it may touch the nozzle
surface to stop ejection from the nozzle.
If an ink accumulates on the flushing foam,
the ink may touch the nozzle surface to
prevent ink from ejecting.
The bent waste ink tube will stop the waste
liquid flow, thereby disabling ink suction
operation of the head cleaning function.
If the tip of the waste ink tube immersed in
liquid, it will prevent the smooth flow of liquid,
It can disable the ink suction operation of the
head cleaning function.
If they are loosely mated, it may allow air to
enter into the head section during the head
cleaning operation, to cause non-ejection
condition of the nozzle.
If the ink pouch is not properly installed, the
cartridge cannot fully wind it, and fails to
supply enough ink to the head.
If a large amount of air exists in the tube, that
air will go into the head to cause
non-ejection condition of the nozzle.
Remedy
Clean the cap
Cleaning the
surrounding area
of nozzle surface
Clean the wiper
Replacing the
Wiper
Replacing the
wiper cleaner
Replacing the
wiper cleaner
Replacing the
flushing foam
Replacing the
flushing foam
Verify the waste
ink tube
Verify the waste
ink tube
Verify connection
between the
head and the
tube
Install an ink
pouch
Re-install the ink Refer to "Re-install the ink".
4-7
Improvement of print quality
Document
Refer to "5-1-1. Cleaning
the nozzle guard, wiper,
exhaust cap, and suction
cap".
Refer to "5-1-5. Cleaning
the surrounding area of
nozzle surface".
Refer to "5-1-1. Cleaning
the nozzle guard, wiper,
exhaust cap, and suction
cap".
Refer to "6-1-20.
Exchanging Wiper Blade
Assembly".
Refer to "6-1-19. Replacing
the wiper cleaner".
Refer to "6-1-19. Replacing
the wiper cleaner".
Refer to "Replacing the
flushing foam".
Refer to "Replacing the
flushing foam".
Refer to "Confirmation and
disposal of waste ink".
Refer to "Confirmation and
disposal of waste ink".
Refer to "6-1-31.
Replacement of print
head".
Refer to "Replacement of
ink pouch".