動作 どうさ不良 ふりょうではありませんでした
dōsa furyōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 動作不良

1. Was not malfunctioning.; Did not have a malfunction.; Was not operating improperly.

Past/Perfective
Negative
Polite
Formal Register