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How to attach the Bluetooth unit (BU-20)
To enable printing with Bluetooth communication, you have to attach the Bluetooth unit (BU-20) to the printer.
Refer to the following procedures to attach the Bluetooth unit to the printer.
1. Turn on the printer.
2. Insert the Bluetooth unit into the direct print port.*
*iP6600D shown below. Direct print port is in same location on other models.

Note: When the Bluetooth unit is attached to the printer properly, the Power lamp will flash twice.