Canon iB4100 series, Online Manual

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Check5
Make sure printer is not too far away from wireless router.
Locate the printer close enough to communicate with the wireless router.
Check6
Check for obstructions.
Wireless communication between different rooms or floors is generally poor. Move the printer and wireless
router as necessary.
Check7
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 the interference source as
possible.
Cannot Communicate with Printer while It Is in Direct Connection
If your smartphone/tablet cannot communicate with the printer in the direct connection, check the
following.
Check1
Make sure printer is turned on.
Check2
Set Change LAN in LAN settings under Device settings to Direct
connection .
Check3
Check settings of your smartphone/tablet.
Make sure your smartphone/tablet can use the wireless LAN.
For more on performing setting of the wireless LAN, refer to the instruction manual provided with your
smartphone/tablet.
Check4
Have you selected printer as destination of your smartphone/tablet?
Select the access point name (SSID) of the printer with your smartphone/tablet.
Check5
Have you entered proper password specified for direct connection?
If the security setting of the direct connection is enabled, you need to enter the password to connect your
smartphone/tablet to the printer.
Check6
Make sure printer is not too far away.
Locate your smartphone/tablet close enough to communicate with the printer.
Check7
Check for obstructions.
Wireless communication between different rooms or floors is generally poor. Move the printer as necessary.
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