4. Alignment and Troubleshooting
Service Manual
ML-331x/371x series
4-4
Samsung Electronics
4.1.2 Understanding The Status LED
The color of the Status indicates the machine’s current status.
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.
• The machine is in power saver mode.
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.
• Small amount of toner is left in the cartridge. The estimated cartridge
life of toner is close. Prepare a new cartridge for replacement. You
may temporarily increase the printing quality by redistributing the
toner.
On • A toner cartridge has almost reached its estimated cartridge life
a
.
• 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.
Orange On A paper jam has occurred
Blue
b
On When the machine is connected to a wireless network, Wireless LED
lights on blue.
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.
b. Wireless model only
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