Samsung SL-M2070W-XAA - Manual (Page 97)

Understanding the status LED
97 4. Troubleshooting
(
Power/
Wakeup )
Blue
On The machine is in power save mode.
Off
The machine is in ready mode or machine’s power is off.
Eco Green
On Eco mode is on.
The default setting of Eco mode is 2-up and toner save.
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 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).
LED Status Description