When an ink tank is empty, it must be replaced.
The BJ Status Monitor (Windows) or the BJ Print Monitor (Macintosh) will initially advise you of a low ink level. At this stage, you can still continue to print.
Once an ink tank is empty, the BJ Status Monitor (Windows) or the BJ Print Monitor (Macintosh) will tell you to replace the ink tank. Attempting to print causes the POWER lamp to flash four times.
Note
Should missing characters or white streaks appear despite sufficient ink levels, refer to the section When Printing Becomes Faint or Colors are Incorrect.