Samsung ML-4512ND-XAA - Manual (Page 92)

Understanding the status LED
92 4. Troubleshooting
LED Status Description
Off The machine is off-line.
Green
Blinking
• When the backlight slowly blinks, the machine is receiving data from the computer.
• When the backlight blinks rapidly, the machine is printing data.
On • The machine is on-line and can be used.
Red
Blinking
• A minor error has occurred and the machine is waiting for the error to be cleared. Check the display message.
When the problem is cleared, the machine resumes. For some models that does not support the display screen
on the control panel, this feature is not applicable.
• Small amount of toner is left in the cartridge. The estimated cartridge life
a of toner is close. Prepare a new
cartridge for replacement. You may temporarily increase the printing quality by redistributing the toner (see
"Redistributing toner" on page 59).
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, printing interval, graphics, media type and media size. Some amount of toner may
remain in the cartridge even when red LED is on and the printer stops printing.
On
• A toner cartridge has almost reached its estimated cartridge life
a
. It is recommended to replace the toner
cartridge (see "Replacing the toner cartridge" on page 61).
• The cover is opened. Close the cover.
• There is no paper in the tray. Load paper in the tray.
• The machine has stopped due to a major error. Check the display message (see "Understanding display
messages" on page 93).
• A paper jam has occurred (see "Clearing paper jams" on page 75).