Brother GT-3 Series Service Manual page 273

6. Replacing Parts
B2. Replacing the Tube connecting to the Color Print Head (K/C: SB3964, M/Y: SB3966)
<Note>

Be sure to replace the Color Filter (K/C: SB3987, M/Y: SB3988) and the Tube connecting to the Color
Print Head (K/C: SB3964, M/Y: SB3966) when you replace the Main Tube and Print Head.

Refer to "6-1-33-1. Replacing the Filter for CMYK" for replacing the Filter for CMYK.
Disassembling
1.
Turn OFF the printer, and open the Front Cover with both hands until it is locked with the stopper.
2.
Put on the gloves. Cover the Print Heads and the Carriage with a soft and clean cloth (1) so that the ink
may not make them dirty as well as some parts may not drop inside the printer.
77 mm
3.
Rotate the Tube Connector (2) (small white part over the Print Head) by 90 degrees (left figure), lift it
straight up slowly and remove the Tube from the Print Head (right figure). Remove the Tube Connector
(2).
<Note>
You can decrease the ink drop coming out of the Tube when you wait about 20 seconds before going to
the next step 4. (The following photos show the Yellow as the example.)
264
The printed surface on the top
67 mm
(1)
(2)
GT-3 Series
(2)