a. Estimated cartridge life means the expected or estimated toner cartridge life, which indicates the average capacity of print-outs and is designed pursuant to ISO/IEC 19752. The number of pages
may be affected by operating environment, percentage of image area, printing interval, graphics, media and media size. Some amount of toner may remain in the cartridge even when red LED is
on and the printer stops printing.
b. Some LEDs may not be available depending on model or country (see "Control panel overview" on page 23).
The machine is in power save mode.
The machine is in ready mode or machine's power is off.
Eco mode is on.
The default setting of Eco mode is 2-up and toner save.