Brother GTX600SB Instruction Manual page 209

(8) Remove the head board of the corresponding print head.
<CAUTION>

Be sure not to touch other boards.
Head board
Head board
(9) Remove the hook and clamp and disconnect the flat cable.
Hook
(10) Unlock the print head, and remove the print head.
<IMPORTANT>

When removing the print head, be careful not to drip the ink on the carriage plate. If the ink is dripping, wipe off the dripping
ink.
(11) Release the lock by pulling part (a) on the case to the left and take out the new print head from its case.
<IMPORTANT>

When removing the print head, be careful not to touch the nozzle surface at the bottom of the head. Otherwise it may cause
poor printing.
<TIPS>

Sometimes, you may find it hard to remove the print head when you try to open the lock of (a) part. If it is hard, use both
hands to remove it.
(a) part
Precautions to keep good printing quality/use printer over the long term
Lock
Remove
Print head
Case
209
Head board
Flat cable
Clamp
Print head
Carriage plate