Brother GTX600NB Instruction Manual page 190

(9) Clean the side of the print heads.
<TIPS>

The use of a flashlight is recommended to make it easier to see when cleaning.

It is not easy to see the rearward side of the nozzle guard. It is recommended to clean it while checking the cleaning
condition with a mirror.
Nozzle guard side cleaning
After nozzle guard side cleaning
Head frontward side
Precautions to keep good printing quality/use printer over the long term
6-22
Rearward
side
Nozzle guard
Head rearward side
Frontward
side
X1014