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I think both words would similarly mean 'when'so I would like to know if there
is any nuance between them and why they are written in different forms.

電源を入れた **とき** (160°C設定もしくは180°C設定 **時** )にランプが赤く点滅します。
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2017-05-18T01:39:43.123
47532
2017-05-18T03:01:40.490
9559
question
words
What is the difference of using とき and 時 in this sentence？
設定時 is read as せってい **じ** because 時 follows an on-yomi compound. There is no
significant difference in meaning, but, as usual, on-yomi words sound more
technical and stiff. In this case, I guess the writer simply preferred the
shorter expression because it was in the parentheses. In addition, although
電源を入れたとき can be also rephrased as 電源【でんげん】投入【とうにゅう】時【じ】, this may be regarded
as a bit too stiff in a documentation targeted at ordinary people these days.
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2017-05-18T03:01:40.490
47537
2017-05-18T03:01:40.490
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47532
answer