Brother GTX-4, Service Manual

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Disassembly / Replacement / Adjustment
(5) Install the solenoid valve on the valve bracket. When assembling the sub pouch assy, hold it down so that its tip
may come into contact with the valve bracket.
(6) Assemble the sub pouch ink detection plate. (Tightening torque 0.5 N·m)
(7) Confirm adequacy of sub pouch assembly. In case pouch is too full or too empty, repeat step (4) of the assembly
procedure to correct situation.
<TIPS>

Pouch should be capable of expanding upon introduction of the ink.
The pouch within the photo is marked with lattice to facilitate the recognition of the expanding pouch.
Adequate
Too full Too empty
Hold down the sub pouch assy so that the resin portion may
come into contact with the valve bracket.