MUTOH VJ-628 ValueJet Operation Manual page 52

[4]
Conduct Nozzle Check.
• If nozzle clogging still remains, repeat cleaning and nozzle check.
"Steps for head cleaning" on page 51
Note
• When nozzle clogging remains even after repeating normal cleaning several times, conduct Long cleaning.
• When nozzle clogging remains even after repeating Long cleaning several times, conduct
"Cleaning of print head circumference" on page 55
or
• Yet, when nozzle clogging remains, conduct "Little Charge".
52 Head cleaning
.
"Cleaning of cleaning wiper" on page 53