Brother GTX-4 Service Manual page 129

Cleaning conditions
(4) After the cleaning is completed, close the front cover.
(5) Turn on the power.
<NOTE>

Dispose of any waste resulting from the cleaning in accordance with applicable laws and ordinances.
<TIPS>

Then, the head cleaning will be performed to prevent any ink from drying up.

Because the cleaning cup will be reused, rinse it in clean cleaning solution and store it in a safe place.
(6) Print out a nozzle check pattern to check the result.
 If non-ink ejection nozzle is not found -> OK
 If the state of non-ink ejection nozzle is not changed -> NG
=> "(6) Is maintenance operation (suction, exhaust) normal?"
Pre-cleaning state
4-32
Improvement of print quality
Post-cleaning state
X0204