Canon imagePROGRAF GP-4000 Online Manual page 690

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Make sure security software's firewall is off.

If your security software's firewall is on, a message may appear warning you that Canon software is attempting

to access the network. If this warning message appears, set security software to always allow access.

If you are using any programs that switch between network environments, check their settings.

If printer is connected to an AirPort Base Station via LAN, make sure you

use alphanumeric characters for network identifier (SSID). (macOS)

If the problem is not resolved, redo setup.

• For Windows:

Perform setup using the Setup CD-ROM or from Setup Guide.

• For macOS:

Perform setup from Setup Guide.

Cannot Connect to a Printer through Wireless Direct

Check the power status of printer and other devices (smartphone or tablet).

Turn on the printer or devices.

If the power is already turned on, turn it off and on again.

If not, Wireless Direct is disabled. Turn on Wireless Direct.

Check the settings of your device (smartphone/tablet).

Make sure Wi-Fi is enabled on your device.

For details, refer to your device's instruction manual.

Make sure printer is selected as connection for device (e.g. smartphone or

Select the identifier for Wireless Direct (SSID) specified for the printer as the connection destination for

Check the destination on your device.

For details, refer to your device's instruction manual or visit the manufacturer's website.

To check the identifier for wireless direct (SSID) specified for the printer, display it using the operation panel of

the printer or print out the network setting information of the printer.

• Display on the touch screen.

icon displayed on the touch screen?

Troubleshooting