Ericsson dt590 ユーザーズマニュアル

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Switching On/Off
BusinessPhone – Cordless DT590
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Switching On/Off
Switch on
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Press and hold at least 3 seconds until the display lights up.
If the phone does not switch on or the battery icon starts flashing, 
the battery is low. Charge the battery.
Note: If the signal strength icon is off and the message 
“No system” or “Searching” is displayed, you cannot make 
or answer calls.
Switch off
Note: During calls, you cannot switch off your phone.
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Press and hold at least 3 seconds until the display turns 
blank.