Brother GT-3 Series Service Manual page 106

Flow 6 (After LC Filter was exchanged)
Execute Initial cleaning
until the air bubbles
should go into the PH.
YES
Up to 10 times,
Max. 25 cc of ink used
Replacing LC Filter and Initial Cleaning
Print Nozzle CP
All nozzles
firing?
NO
Loose connection of
Tubes and Joints?
NO
Wait 10 minutes to remove air.
Execute "Powerful" cleaning and print
Nozzle CP
All nozzles
firing?
NO
Replace the Print Head.
4. Solving Print Quality Problems
YES
YES
GT-3 Series
Problem solved.
(No PH replacement)
Problem solved.
(No PH replacement)
97