AWS PN-Series - Turning on the Balance and Self-Testing; Underweighing

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PN-Series Manual
2.4. Turning on the Balance and Self-testing
1. Connect the AC adapter to an available wall socket and plug the other end of the cable into the balance.
2. Press the ON / OFF key to turn the scale on. A display test will be performed (5 seconds).
3. Once the display shows “0.0g” the balance is ready to use.
4. To turn the scale o, press the ON / OFF key.