jeonwon beoteuneul gilge nulleoya hwamyeoni kyeojyeo.

You need to press and hold the power button for the screen to turn on.

Breakdown of jeonwon beoteuneul gilge nulleoya hwamyeoni kyeojyeo.

• ~이: subject particle
• ~을: object particle
• 화면: screen
• 전원: power

Questions & Answers about jeonwon beoteuneul gilge nulleoya hwamyeoni kyeojyeo.

What does the ending -아/어야 in 눌러야 express here?

It marks a necessary condition: only if/when you press (and hold), then the result happens. With a following clause, it means “only if X, Y.” Compare:

• Necessary condition: 전원 버튼을 길게 눌러야 화면이 켜져요.
• Obligation (must): 전원 버튼을 길게 눌러야 해요/돼요. (Here, -아/어야 combines with 하다/되다 to mean “have to.”)

Why not use 눌러서 instead of 눌러야?

-아서/어서 presents cause/sequence (“press and then it turns on”), often describing a one-time sequence. -아/어야 emphasizes necessity/condition (“only if you press and hold, it will turn on”). For general instructions or rules, -아/어야 is the natural choice.

What exactly is 켜져?

It’s the informal present of the passive/inchoative verb 켜지다 (“to be/get turned on”). Morphology:

• 켜다 (to turn on something) → 켜지다 (it turns on / gets turned on)
• 켜지 + 어 → 켜져 (contraction of 지어 → 져) Meaning here: an event/result (“it turns on”), not an action you actively do.

Why is it 화면이 and not 화면은 or 화면을?