Sharp FO-4450 - Manual (Page 22)

Installing the Print Cartridges
20
When to replace the toner cartridge
When the toner cartridge nears empty (about 100 pages can still be printed),
the toner cartridge indicator on the operation panel will blink. When the toner
cartridge is empty, the toner cartridge indicator will light steadily and
REPLACE TONER will appear in the display. Printing will no longer be
possible. Use the following replacement toner cartridge:
Sharp FO-44ND or FO-50ND toner cartridge
Hint:
When the toner cartridge nears empty, try taking it out of the machine and
shaking it. This may increase the number of pages that can be printed before
the toner runs out.
When to replace the drum cartridge
When the drum cartridge nears the end of its life, the ALARM indicator on the
operation panel will blink and DRUM LIFE REACHED will appear in the
display (this message first appears approximately 1000 pages before the
drum needs replacement). Use the following replacement drum cartridge:
Sharp FO-47DR drum cartridge