Brother GTX pro Instruction Manual page 188

(8) Insert a new wiper cleaner into the printer from above, tip it leftward and put it in place.
<TIPS>

First, insert the shaft from above. Then fold it to the left, press the area with the PUSH indication until a clicking sound is
heard, and get the latch into position.
Shaft
Wiper cleaner
(9) Close the front cover.
(10) Turn on the power.
<NOTE>

Dispose of any waste resulting from the replacement in accordance with applicable laws and ordinances.
<TIPS>

A head cleaning will be performed to prevent ink from drying up.
Precautions to keep good printing quality/use printer over the long term
Latch
Latch
Shaft
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