I replaced the toner cartridge, but I am getting a blinking green ready light with a blinking red alarm light. will not print.

Ready and Error Lights (EPL-6200L only)

The Ready (green) and Error (red) lights on the top of the printer may be the first indication of trouble. The status of the lights, on, off or flashing, indicates your printer status, as described below. The Status Alert window in the EPSON Status Monitor 3 utility indicates what type of error has occurred and offers you a possible solution. Look through this section to find the kind of problem you have, then try the recommended solutions in the order they are presented until your problem is solved.
>

a. Error light (red)
b. Ready light (green)

Status/Error/Warning
INDICATOR LIGHTS
Ready
Error
Service Required (controller error)
OFF
> Service Required (engine error)
> > Service Required (protocol error)
> > Output Paper Jam
> > Paper Jam
> > Paper Out/Feed Jam
> > No Developer Cartridge Installed
> > Wrong Developer Cartridge Installed
> > Installed Developer Cartridge is Not a Genuine EPSON Product
> > Developer Cartridge Memory Error
> > Toner Out
> > Front Cover Open
> > Output Cover Open
> > Printing on Incorrect Paper Size
> > Unsupported Paper Size
> > Time Out Error
> > Insufficient Memory to Print Current Page
> > Paper Size Warning
> OFF
Not All Pages Are Printed
> OFF
Warming Up
> OFF
Replace Photoconductor Unit
> OFF
Toner Low
> OFF
Installed Developer Cartridge is Not a Genuine EPSON Product Warning
> OFF
Sleep mode
> OFF
Ready
> OFF
Printing
> OFF
Processing Data
> OFF
> Note: > If the problem remains after trying the suggestions in this section, contact your dealer or a qualified service representative for assistance.

Service Required (controller error)

Control panel: Error light on
A controller error has been detected. Turn off the printer, wait 5 seconds and then turn it back on. If all the lights come on again, turn off the printer, unplug the power cord, and contact a qualified service representative.

Service Required (engine error)

Control panel: Ready and Error lights flashing
A print engine error has been detected. Turn off the printer, wait 5 seconds and then turn it back on. If the lights come on again, turn off the printer, unplug the power cord, and contact a qualified service representative.

Service Required (protocol error)

Control panel: Ready light flashing, Error light on
A protocol error has been detected. Turn off the printer, wait 5 seconds and then turn it back on. If the lights come on again, turn off the printer, unplug the power cord, and contact a qualified service representative.

Output Paper Jam

Control panel: Ready and Error lights on
Indicates that there may be a paper jam inside the printer. Open the printer's output cover, remove any jammed paper, and close the cover. The error will automatically clear itself and the jammed page's print data is reprinted.

Paper Jam

Control panel: Ready and Error lights on
Indicates that there may be a paper jam inside the printer. Open the printer's front cover, remove any jammed paper, and close the cover. The error will automatically clear itself and the jammed page's print data is reprinted.

Paper Out/Feed Jam

Control panel: Ready and Error lights on
Indicates that there is either no paper loaded in the printer, or there is a paper jam in the feed slot.
If no paper is loaded, load paper into the MP tray, then open and close the printer's front cover. See Loading Paper for instructions on loading paper.
You can clear the error by pressing Continue on the EPSON Status Monitor 3 window that appears.
If paper is loaded, then there is a paper jam in the feed slot. See Clearing Jammed Paper for instructions on clearing paper jams. The error is automatically resolved upon clearing the jammed paper and opening and closing the printer's front cover.

No Developer Cartridge Installed

Control panel: Ready and Error lights on
Either the developer cartridge is not installed or is installed incorrectly. Check to see if the developer cartridge is properly installed and follow the instructions under Developer Cartridge to install or reinstall it.

Wrong Developer Cartridge Installed

Control panel: Ready and Error lights on
Either the installed developer cartridge is defective, or it is not the right one for your printer model. Replace it with a new or correct developer cartridge by following the instructions under Developer Cartridge.

Installed Developer Cartridge is Not a Genuine EPSON Product

Control panel: Ready light on, Error light flashing
The installed developer cartridge is not a genuine EPSON product. The use of such products may damage the printer and cause the print quality to decrease. Remove the currently installed cartridge and replace it with a genuine EPSON cartridge by following the instructions under Developer Cartridge.
To continue using the currently installed developer cartridge, press Continue on the EPSON Status Monitor 3 window that appears to clear the error.

Developer Cartridge Memory Error

Control panel: Ready light on, Error light flashing
A memory read/write error has occurred. Try reinstalling the developer cartridge or replacing the current cartridge with a new one by following the instructions under Developer Cartridge. If this still does not resolve the problem, turn the power off and then on again.

Toner Out

Control panel: Ready light on, Error light flashing
The developer cartridge is out of toner. Replace the developer cartridge by following the instructions under Developer Cartridge. To clear this error and print a single sheet, press Continue on the EPSON Status Monitor 3 window that appears to clear the error. After that, this error will occur again until the developer cartridge is replaced. If you set the Toner Out Error setting to Off, you can continue printing even when this error occurs.

Front Cover Open

Control panel: Ready and Error lights on
The printer's front cover is open. Make sure that the printer's front cover is closed properly by opening and closing it again.

Output Cover Open

Control panel: Ready and Error lights on
The printer's output cover is open. Make sure that the printer's output cover is closed properly by opening and closing it again.

Printing on Incorrect Paper Size

Control panel: Ready light on, Error light flashing
The paper loaded in the paper source does not match the required paper size. Replace with paper of the correct size and click Continue on the EPSON Status Monitor 3 window that appears. If you want to change printer driver settings, click Stop.

Unsupported Paper Size

Control panel: Ready light on, Error light flashing
The specified paper size is not supported by this printer, or the paper feed direction is incorrect. To continue printing from the page after the page that caused the error, click Continue on the EPSON Status Monitor 3 window that appears. If you want to change printer driver settings, click Stop.

Time Out Error

Control panel: Ready light on, Error light flashing
Data transmission from the computer to the printer is interrupted and a timeout error has occurred. Click Print Again on the EPSON Status Monitor 3 window that appears to resume printing. If printing does not resume, or if you want to change printer driver settings, click Stop.

Insufficient Memory to Print Current Page

Control panel: Ready light on, Error light flashing
The printer does not have sufficient memory to print the current page. To continue printing from the page after the page that caused the error, click Continue on the EPSON Status Monitor 3 window that appears. If you want to change printer driver settings, click Stop.

Paper Size Warning

Control panel: Ready light on
The size of the paper that fed through the printer does not match the specified paper size. Click Close on the EPSON Status Monitor 3 window that appears to dismiss the warning.

Not All Pages Are Printed

Control panel: Ready light on
This warning is displayed if an Insufficient Memory to Print Current Page error has occurred while Auto Continue is set to On. Click Close on the EPSON Status Monitor 3 window that appears to dismiss the warning.

Warming Up

Control panel: Ready light flashing
Indicates that the printer is warming up to process and print data.

Replace Photoconductor Unit

Control panel: Ready light flashing (flashes at longer intervals than usual)
Indicates that the photoconductor unit is close to the end of its service life (less that 5%). Prepare a new photoconductor unit to replace the current one. See Photoconductor Unit for instructions.
To temporarily dismiss the warning, click Close on the EPSON Status Monitor 3 window that appears. Resetting the photoconductor unit also clears the warning.

Toner Low

Control panel: Ready light flashing (flashes at longer intervals than usual)
Indicates that the developer cartridge is nearly out of toner. Prepare a new developer cartridge to replace the current one. See Developer Cartridge for instructions.

Installed Developer Cartridge is Not a Genuine EPSON Product Warning

Control panel: Ready light flashing (flashes at longer intervals than usual)
This is a warning to inform you that the installed developer cartridge is not a genuine EPSON product. The use of such products may damage the printer and cause the print quality to decrease. Remove the currently installed cartridge and replace it with a genuine EPSON cartridge by following the instructions under Developer Cartridge.
To temporarily dismiss the warning, click Close on the EPSON Status Monitor 3 window that appears.

Sleep mode

Control panel: Ready light on
Indicates that the printer is in energy-saving mode. The printer goes into standby due to inactivity. If the Sleep mode is enabled, the printer goes into standby in 15 minutes.

Ready

Control panel: Ready light on
Indicates that the printer is ready to print.

Printing

Control panel: Ready light flashing
Indicates that the printer is printing data.

Processing Data

Control panel: Ready light flashing
Indicates that the printer is processing data.

Replace the toner cartridges with OEM toner

Don't fiddle with it you'll just mess with it more take it in and see what they can do if not i suggest you by a new one.

There are actually some certain meaning on the red light and green light showing different information to user. The summaries are:
1) Green On, Red Off = Printer Ready.
2) Green Fast-Flashing, Red Fast-Flashing = Printer warm up.
3) Green Fast-Flashing, Red Off = Printer off-line.
4) Green Slow-Flashing, Red Off = Processing Data.
5) Green Off, Red On = Cover Opened, Toner Empty or Developer Unit / Drum unit missing.
6) Green Off, Red Fast-Flashing = Paper Jam or waiting for jam reset.
7) Green Off, Red Slow-Flashing = Paper Empty or Paper tray is not inserted.
8) Green Off, Red Off = Printer power is off.
9) Green Very-Slow-Flashing, Red Off = Printer in sleep mode.
10) Green (any condition above), Red Slow-Flashing = Toner low or paper empty.

So what is your printer condition? Better know what is going on your printer so can solve the problem.

dear sir

1. it is problem paper miss feed
2. over temparature

clean thermostator.thermostator over dry toner
or cartridge assembling problem

Because I was getting gray shading on my pages and data was still being printing, I decided to change the toner cartridge. Now the pages are clean and white and all the lights function properly. Most cartridges that are running on empty don't print any data at all or at least print the data at the top of the page and gradually gets fainter sp? on the page. Who would have thought just by changing the cartridge would solve the problem? So glad that's all it was........wasn't excited about having to buy a new printer.

This answer may be a bit late but if this flashing of the red and green light is accompanied by a sound of a motor starting and stopping over and over, it is NOT toner, but a defective capacitor in the power supply. Here is a photo of the part that is creating the problem. I am not responsible for any harm done to yourself so please make sure you know what you are doing.

On this printer, the alarm and data lights mean that the toner cartridge is empty. When you replace the toner, be sure to slide the corona wire cleaner across and back. This is the small light blue plastic piece on top of the drum cartridge. You'll see a small arrow in the plastic. Just slide it back and forth once or twice each time you replace the toner cartridge.

According to the operation manual: If alarm light and data light blink every 5 seconds- TONER LOW (purchase more toner and have it ready when the 'toner empty' is indicated). If alarm light and data light stay lit- TONER EMPTY (replace toner cartrige with new one).

(blinking every 5 seconds) Toner Low Indicates that the toner cartridge is nearly empty. Purchase a new toner and have it ready for when Toner Empty is indicated. (solid) Toner Empty Replace the toner cartridge with a new one. User's Manual is available at the following location: http://www.brother-usa.com/Data/Documentation/Printer/User/UM_HL1440_1450_1470N.pdf Hope this helps.