Canon Pixma MG6821, Online Manual

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If No Driver appears under Name in IJ Network Tool, the machine is not associated with a port. Select
Associate Port in the Settings menu to associate a port with the machine.
When Printer Driver Is Not Associated with Port
Check7
Make sure machine and wireless router network settings match.
See instruction manual provided with wireless router or contact its manufacturer to check wireless router
settings, and then modify machine settings to match.
Setting an Encryption Key
Check8
Check for obstructions.
Wireless communication between different rooms or floors is generally poor. Move the machine and wireless
router as necessary.
To check the radio status,
• For Windows:
Monitoring Wireless Network Status
• For Mac OS:
Monitoring Wireless Network Status
Check9
Make sure the machine is not placed too far away from the wireless router.
The machine can be up to 50 m (164 ft) from the wireless router indoors. Make sure the machine is close
enough to the wireless router to be used.
To check the radio status,
• For Windows:
Monitoring Wireless Network Status
• For Mac OS:
Monitoring Wireless Network Status
Check10
Make sure there is no source of radio wave interference nearby.
If a device like a microwave oven that emits radio waves of the same frequency bandwidth as a wireless router is
nearby, it may cause interference. Place the wireless router as far away from interference sources as possible.
To check the radio status,
• For Windows:
Monitoring Wireless Network Status
• For Mac OS:
Monitoring Wireless Network Status
Check11
Make sure computer network settings are correct.
Make sure the computer can communicate with the wireless router over the wireless LAN.
Check12
Make sure Enable bidirectional support is selected in Ports sheet of
properties dialog box of printer driver. (Windows)
Check13
Make sure security software's firewall is off.
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