Brother GT-3 Series Service Manual

4. Solving Print Quality Problems
4-1. Checking the Cause of Misfiring
The following shows how to troubleshoot.
Refer to “7-2. Solving Print Quality Problems “ in the Instruction Manual.
Troubleshooting Flow
Analyze the cause of the misfiring / poor print quality by following the Flow below.
GT-3 Series
90
YES
NO
YES
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
NO
NO
YES
NO
Y
ES
NO
YES
YES
YES
NO
YES
Print Nozzle CP
Uneven or
scatterin
g
?
Better?
Fixed nozzle?
Normal HC
Print Standard CP
Surface Check with mirror, Clean Wiper and Caps
Replace Wiper Cleaner, Clean Nozzles, Do Powerful
HC
Start
Print OK
Leave long?
Repair！
CR position, Waste Ink Tube and pump in
Maintenance Unit
,
Re
p
lace Heads and Tubes.
Turn OFF/ON
Electrical Check
Electrical Check
Check ink in cap just after moving
pump and waste ink tubes.
Better?
Increase
humidity
Solid？
YES
Increase wipe
in printing
Do Normal HC
Print Nozzle CP
While printing?
Almost no
misfiring?
1 out of 4 or
almost none?
Nozzle CP 印刷
Do Normal HC, Print Nozzle CP for several times.
Dried?
Air inside, Wait 10 min
"missing
ba
n
d
"?
Better after
OFF/O
N?
misfiring？
Filter
Warning?
Replace
No good Solid Pattern shows print head
clogging by
Tube crack, NG Ink Cartridge
(empty, frozen, etc.) Filter clogging, or air
in the Tube.
First of all, confirm the temperature and humidity, power (the ground,
noise) and ask how your customer has done for maintenance (Head
Cleaning, Wiper and Caps, Wiper Cleaner).
Ask when the problem starts and how frequently it occurs,
improved or not.
Confirm if the ink is enough in the Ink Cartridge.
HC = head Cleaning
CP =
Ch
eck Pattern
Solid = Solid Pattern

Brother GT-3 Series Specifications

General

Brand	Brother
Model	GT-3 Series
Category	Printer
Language	English