Brother GT-341 Instruction Manual page 145

Problem
The outlines of printed image
are not clear, or texts and
outlines are printed doubled.
T-shirt is smudged with ink.
Pale colors are getting
disappeared while printing.
White is uneven.
White is not white enough.
Cause
The Platen height may be
wrong with a too large gap.
Print Heads hit the garment
Flushing Plate Sponge is full
of waste ink.
Clearance Sensor is stained.
The Platen Sheet needs to
be replaced and is dirty.
The nozzles f the Print Heads
are getting dried under the
humid high-temperature
condition.
Pretreatment was not applied
enough or done unevenly.
Water drops on the
Pretreatment-cured surface
cause stains.
Pretreatment was not applied
enough.
Poor curing: Temperature
was too low and/or the
pressure is too low.
Mis-firing of nozzles: Confirm
by printing Nozzle Check
Pattern. by referring "7-2-3.
Checking Print Quality with
Nozzle Check Pattern ". The
Print Heads need to be
cleaned.
Daily Cleaning White is not
done. White Ink Cartridges
were not shaken enough.
GT-3 Series
Solution
Adjust the Platen height to make the clearance
between the Clearance Sensor and the surface
of the Print Heads app. 2 mm. See "4-5. Placing
the T-shirt on the Platen". When "Platen
Lowering Set (option)" is used, put them back to
the original parts or lay something on the Platen.
Keep the surface flat and adjust the height. (esp.
both edges). See "4-5. Placing the T-shirt on the
Platen".
Replace the Flushing Plate Sponge and
Flushing Plate Felt. See "6-1-3. Replacing
Flushing Plate Sponge and Flushing Plate Felt".
Wipe off the both sides of Clearance Sensor.
See "6-1-6. Cleaning the inside of the printer
and restart".
See "6-2-5. Replacing the Platen Sheet".
See "7-2-10. Adjusting the Flushing Interval",
"7-2-11. Adjusting the Flushing Volume".
Apply evenly. See "4-6-1. Applying the
Pretreatment".
Do not wet the cured surface. See "4-6-1.
Applying the Pretreatment".
See "4-6-1. Applying the Pretreatment".
Confirm the temperature and increase the
pressure of heat press. See "4-6-1. Applying the
Pretreatment".
Press the Head Cleaning Button to clean the
Print Heads. Or select "Head Cleaning" menu.
After Head Cleaning, check the nozzles with
"Nozzle Check Pattern. If repeating this 5 times
does not solve the problem, see "7-2-2.
Cleaning the Print Heads".
Do the steps in "6-2-1. Daily Cleaning White for
replacing dull White Ink". Shake the White Ink
Cartridges well.
7. Troubleshooting
135