HP 5550 User Guide - Page 233

This message... I-UNIT LOW X I-UNIT LIFE X STAPLER EMPTY TONER EMPTY X TONER LOW X means... do this... The X print unit is low Prepare the specified and should be color print unit. replaced within 2,000 pages at 5% cover- age of letter/A4 pages. (Appears when SYS DEFAULT MENU/ ENABLE WARN- ING/I-UNIT LOW is set to ON.) The X print unit has Replace the print unit. reached the end of its life. The staple finisher Replace the staple has run out of staples. cartridge. Otherwise, the staples are almost empty. The X toner cartridge Replace the toner car- is empty. tridge. Printing does not stop immediately when this message appears. Therefore, if printing is continued, the Operator Call message "TONER EMPTY" appears, and then printing stops. (Refer to page 224.) The X toner cartridge Prepare the specified is low and should be color toner cartridge. replaced within 1,200 pages at 5% coverage of letter/A4 pages. (Appears when SYS DEFAULT MENU/ ENABLE WARN- ING/TONER LOW is set to ON.) Status, Error, and Service Messages 219