Brother GT-3 Series Service Manual page 240

1.
Fix the Ink Switch PCB Assy with the six Screws.
Follow the order of those six Screws in the photo below; first fix the red marked two screws and then fix
the yellow marked screws later.
(1)
2.
Lift up slightly the Tubes in the photo below, and follow the reverse steps in the Step 9 in Disassembling.
Then fix the four Screws by following the Step 8 and 7 in Disassembling. Confirm the original position
indicated in the first page of "6-1-34. Ink Switch Dog" (Center type, Left type, Right type).
<Note> Handle the Tubes with care; the Tubes are easily kinked and may be damaged in lifting.
3.
Connect the Connector by following the reverse steps in Step 6 and 5 of Disassembling.
4.
Mount the two Tube Holder Fixes and the two Cord Holders: NK-18N by following the reverse steps in
Step 4 and 3 of Disassembling.
<Note> Depending on the unit, there are no Cord Holders: NK-18N (4) mounted originally.
<Note> Confirm that the Tubes in position A should not be bitten in assembling.
5.
Mount the Cover Cartridge. (Refer to "6-1-2. Assembling/Disassembling of the Covers".)
6.
Confirm if the replaced Ink Switch can work.
(1) Turn On the printer.
(2) Pull out the target Ink Cartridge by 5 cm and confirm if the indication on the Display shows No ink
cartridge.
(3) Insert the Ink Cartridge to the end and confirm if the indication on the Display shows the cartridge is in.
(2)
(A)
(A)
GT-3 Series
6. Replacing Parts
(3)
(A)
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