trendmedic TM-7500, Руководство по эксплуатации

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Power Supply
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Slide back the battery cover on the back of the device.
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Insert 1 piece 9V battery, making sure that the “+/-“symbols are correctly.
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If the power is too low, the unit may display a battery symbol “ “and the device may
not use correctly. You need to change a new battery.
Operation
(Test mode)
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Insert one of the mouthpieces into the ‘blow in’ hole.
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Press and hold the TEST button until power on. Release it after power on.
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The WAIT displays on the screen and countdown 15, 14, and 13… to zero.