Unlock the scanner if necessary

To keep the UPS man from banging around a scanner's sensitive innards, most scanners come with a built-in locking mechanism inside that clenches all the delicate parts together tightly. You need to unlock the scanner before using it, or you'll hear frightening grinding sounds.

Unlocking most models simply means turning a switch along one side of the scanner; on more advanced models, you need to unscrew a panel along one edge of the scanner to access the switch. Some locking switches hide beneath a strip of bright-plastic tape that says, "Unlock before use."

Note: Always lock the scanner before boxing it up and shipping or moving it.

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