Error has occurred.

LED pattern Possible Problems and Solutions
Your system has some problems. If this problem occurs,
contact your service representative.
On Line/Error LED
lights red
• Paper jam occurs. To solve the problem, see "Clearing
Paper Jams" on page 5.6.
• The front cover is open. Close the front cover.
• Paper tray is empty. Load the paper in the Tray.
• The toner cartridge is out of toner. Remove the old toner
cartridge and install a new one. See "Installing the Toner
Cartridge" on page 2.4.
• You pressed the Cancel button while the printer is
receiving data.
• In Manual Feed mode, there is no paper in the manual
tray. Load paper into the manual tray.
• If the printer is receiving data, the On Line/Error LED
slowly blinks green.
• If the printer is printing the received data, the On Line/
Error LED blinks green fast.

the printer has occurred. error code 006.

An error occurred Page not found

LED pattern Possible Problems and Solutions
Your system has some problems. If this problem occurs,
contact your service representative.
On Line/Error LED
lights red
• Paper jam occurs. To solve the problem, see "Clearing
Paper Jams" on page 5.6.
• The front cover is open. Close the front cover.
• Paper tray is empty. Load the paper in the Tray.
• The toner cartridge is out of toner. Remove the old toner
cartridge and install a new one. See "Installing the Toner
Cartridge" on page 2.4.
• You pressed the Cancel button while the printer is
receiving data.
• In Manual Feed mode, there is no paper in the manual
tray. Load paper into the manual tray.
• If the printer is receiving data, the On Line/Error LED
slowly blinks green.
• If the printer is printing the received data, the On Line/
Error LED blinks green fast.

The "Red Screen of Death" usually happens in later PS3 Fat models right after you have turned on the PS3. It can happen right after the PS3 logo and wave animation appears. It is a mysterious error that seem to be software related during the checking process (perhaps some corruption in nand flash or harddrive block). When the error occurs, the screen turns red, and you see a message:

A serious error has occurred. Contact technical support for assistance.

Maybe the toner is low... According to the manual, a blinking red light:

• A minor error is occurring and
the printer is waiting for the error
to be cleared. When the problem
is cleared, the printer resumes
printing.
• The toner cartridge is low. Order
a new toner cartridge. You can
temporarily improve print quality
by redistributing the toner. See
page 8.3.
• The toner is totally exhausted.
Remove the old toner cartridge
and install a new one. See page
8.4.
• The toner cartridge reached the
end of its life.

From the service manual:

Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Check the Laser Unit for correct
installation.
Is the Laser Unit correctly installed?
Go to step 3. Reinstall the
Laser Unit. Go
to step 2.
2 Cycle the power.
Does the error still occur?
Go to step 3. Complete.
3 Check the wiring harness connectors
P/J40, P/J41, P/J411, and P/J412
between the MCU Board and the Laser
Unit.
Are the connectors securely
connected?
Go to step 5 Reconnect the
connectors. Go
to step 4.
4 Cycle the power.
Does the error still occur?
Go to step 5. Complete.
5 Replace the Laser Unit (page 8-31).
Does the error still occur?
Replace the
MCU Board
(page 8-59).
Complete.

The online/error light is always red, and I can't print. I turn the printer off, change the toner and the light is still red, what can I do

Check your manual, there is a solution there or download the user guide from
this site below or read the information below.

http://downloadcenter.samsung.com/content/UM/200602/20060216163720484_ML-2010_English.pdf


LED pattern Possible Problems and Solutions
Your system has some problems. If this problem occurs,
contact your service representative.
On Line/Error LED
lights red
• Paper jam occurs. To solve the problem, see “Clearing
Paper Jams” on page 5.6.
• The front cover is open. Close the front cover.
• Paper tray is empty. Load the paper in the Tray.
• The toner cartridge is out of toner. Remove the old toner
cartridge and install a new one. See “Installing the Toner
Cartridge” on page 2.4.
• You pressed the Cancel button while the printer is
receiving data.
• In Manual Feed mode, there is no paper in the manual
tray. Load paper into the manual tray.
• If the printer is receiving data, the On Line/Error LED
slowly blinks green.
• If the printer is printing the received data, the On Line/
Error LED blinks green fast.

LED pattern Possible Problems and Solutions
Your system has some problems. If this problem occurs,
contact your service representative.
On Line/Error LED
lights red
• Paper jam occurs. To solve the problem, see “Clearing
Paper Jams” on page 5.6.
• The front cover is open. Close the front cover.
• Paper tray is empty. Load the paper in the Tray.
• The toner cartridge is out of toner. Remove the old toner
cartridge and install a new one. See “Installing the Toner
Cartridge” on page 2.4.
• You pressed the Cancel button while the printer is
receiving data.
• In Manual Feed mode, there is no paper in the manual
tray. Load paper into the manual tray.
• If the printer is receiving data, the On Line/Error LED
slowly blinks green.
• If the printer is printing the received data, the On Line/
Error LED blinks green fast.