Brother GT-3 Series Service Manual page 103

4. Solving Print Quality Problems
Flow 3 (Fixed nozzle(s)?)
From previous flow
Is the same nozzle(s)
always misfiring?
YES
Clean the nozzle surface and
install ink again.
10 cc of ink used.
Wipe the Nozzle
with Clean
Applicator (round)
soaked with Wash
Liquid.
All nozzles firing?
YES
Problem solved.
(No PH replacement)
94
NO
Always more
than 5 nozzles
misfiring?
YES
The Print Head may leak.
Replace the Print Head.
Execute "Powerful" cleaning
(up to 10 times)
Max. 25 cc of ink used.
Print a check pattern and count
NO
the number of misfiring nozzles.
NO
All nozzles firing?
YES
Problem solved.
(No PH replacement)
GT-3 Series
NO
(No PH replacement)
Clean the Wiper and Print Head Cap.
Replace the Wiper Cleaner.
NO
Is the same
nozzle(s) always
misfiring?
The fixed nozzle is still
Replace the Print Head.
Repeating "Powerful"
cleaning 10 times does
not resolve the problem.
There is no problem with
the Print Heads, however,
there may be on other
parts.
Problem solved.
YES
misfiring.
The Print Head Nozzle
is clogged, or there is
an electrical problem
with the Print Head.