Brother GT-3 Series - Page 105

4. Solving Print Quality Problems
Flo
w
5 (Maintenance Unit causes misfiring?)
YES
PH Alignment shifts
vertically?
Check if the Plate Spring and Front Head Hold Spring used to
secure the Print Head are properly secured, and if they are in
contact with the rear Positioning Pin properly.
From previous flow
Adjust by checking the actual No
zzle Check
Pattern for alignment.
Confirm if any objects behind the PH.
NO
GT-3 Series
96
NO
YES
YES
NO
YES
NO
NO
YES
NO
YES
The Pump Tube is
clogged.
Replace Tube.
Go to Flow 3.
Repeating "Pow
erful" Head
cleaning 5 times does not
resolve the problem.
Ink remaining in
Print Head Cap?
Print a check pattern and count
the number of misfiring nozzles.
YES
NO
Connect the Print Head Cap and Tube
Pump Tube, and check the connection
between the Tubes.
Connection
OK?
All nozzles
firing?
Faulty Solenoid
Max. 12.5 cc of ink
used.
Execute “Powerful” head
cleaning (up to 5 times).
There is no problem with
the Maintenance unit.
<Procedure>
1. Remove ink in the Print Head Cap.
2. Execute “Powerful” cleaning.
3. Suction OK if ink remaining in Print
Head Cap. If not, issue is in Tube
Pump.
Open the Rear Cover DB and remove the Tube Pump.
Is Tube Pump Tube
cracked?
Replace Tube
and Pump Tube
Position OK?
Adjust the vertical positioning of the
Print Head and Print Head Cap rubber.
Cracks may
cause ink
leakage.
Remove the Wiper Cleaner Cassette and check if the
Print Head and Print Head Cap rubber position is OK.
2.5 cc of ink used.
Execute “Powerful” cleaning and check
if ink flows to the Tube Pump Tube.
Check Solenoid noise
during Head cleaning. No
problem after 5 times?
Connect PH and Tube
Pump Tube.
Problem solved.
(No PH replacement)