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My product is on, but the display is black. What should I do?

    Try the following:
    • Make sure the batteries are inserted correctly.
    • Replace the batteries with new ones, or use the optional AC adapter (APT0615Z1-1).

      Warning: Make sure to use AC adapter APT0615Z1-1 or damage may occur.
    • If you are using an AC adapter, make sure that it is securely connected to both the wall outlet and the product.
    • Adjust the contrast setting.
Published:  Aug 9, 2011 Was this helpful​? Thank you for the feedback!
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