Canon Pixma iP90 User Manual page 74

Check the printer port status.
(1) Right-click My Computer and select Properties.
(2) On the Device Manager sheet, click Port (COM/LPT) (or Port (COM&LPT) ) and double-click
Virtual infrared LPT port (or Infrared printer (LPT) port ).
(3) Check whether any device problem is displayed on the General (or Information) sheet.
If any device problem is displayed, refer to your Windows documentation.
The printer port setting is wrong
When printing from the computer through infrared communication, check whether the IR port is selected as
the printer port (LPT3 port in Windows Me or Windows 98). If another port is selected, the printer may
malfunction.
(1) Open the Printer Properties dialog box.
See Opening the Printer Properties Dialog Box Directly from the Start Menu
(2) Click the Ports tab (or Details tab) to check the settings.