Samsung SL-C1810W-XAA - Manual (Page 96)

Understanding the status LED
96 4. Troubleshooting
Eco Green
On Eco mode is on (see "Eco printing" on page 47).
Off Eco mode is off.
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 19798. 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 20).
LED Status Description