First, check the printer port you are using.

1. Open [Devices and Printers] and right-click the PJ-7xx.
   To learn how to open [Devices and Printers], see "How to open the Devices and Printers window".
2. Select [Printer properties].
3. Open the [Ports] tab and confirm if the port "TBPx :" is selected.
   If it is selected, follow the steps below.

Do the following:

1. Click [Start] - [All Programs] - [TOSHIBA] - [Networking] - [Bluetooth] - [Bluetooth settings]
2. The “Bluetooth Settings” window appears. Click the [New Connection] button.
3. Select [Custom Mode] in the "Add New Connection Wizard“ and click [Next].
4. Confirm that the power of the printer is on and the Bluetooth indicator is lit.  If not, turn on the printer, and then press and hold the Bluetooth button on the printer.
5. Select the printer from “Bluetooth Device” and click [Next].
6. Select [Serial Port] from “Service Selection” and click [Next].
7. Select the port you want to assign from “Assignment of COM Port Name” and click [Next].
   Write down the selected COM Port Name as you will need it later.
8. Follow the instructions in the wizard.
9. When finished, you will have to change the printer port.
   Open [Devices and Printers] and right-click the PJ-7xx.
10. Select [Printer properties] and open the [Ports] tab.
11. Select the COM Port that was assigned in Step 7 and click [Apply].
12. Open the [General] tab and Click [Printing Preferences]. The “Printing Preferences” window appears.
    If the custom paper size you added to "User Defined Size" cannot be found, add it again.
    If the setting in "Administrator" function is not working, reset the setting.
13. Click [Apply] after either resetting or re-adding the custom paper size.