Deyi SR-516A Handbuch - Seite 9

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Problems

1. Ventilation window is blocked by something

2. Do not turn on

Analysis

1. The battery is dead or damaged, powered by USB socket, if you can

turn on and the upper right corner of the power grid has changed, is

the battery is dead, such as no change only shows OK icon. Indicates

that the battery has been damaged.

2. The battery +/- polarity is reversed, it should be noted that one end

of the battery without a protruding contact point is the "-" pole, and

the end with a protruding contact point is the "+" pole. Can refer to

the following chart