Epson TM-U375P error light flashes 3 times

Hi,

for this light-flashing error, please view the troubleshooting section of your manual to identify the specific procedure needed to overcome the error. Thank you.

What is the error that appear in the printer status on your computer?

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.

The Epson printer light blinking when you have low or empty ink in tank, Lack of communication between printer and computer, printer print head overheated, fuser not working and more.
Follow the steps to fix Epson printer lights blinking error:

·Fix paper jammed
·Check printer ink cartridge
·Check network connection

Read more steps to fix Epson printer lights blinking error.

Paper jam problems can occur due to strayed, stuck bits of papers in pathway of paper tray, outlet, roller etc. I would recommend cleaning the paper inlet, outlet, and other possible areas to avoid a paper jam situation. I have observed that most people fan the paper pile to keep them dry or non-sticky. It's a wrong method because fanning the pile of papers make them go haywire and often lead to paper jam.

The flashing lights are a "Maintenance request error" or a "Fatal error". Most of the time it is a "Maintenance request error" which means the waste ink pads need to be serviced. You can reset the waste ink counter but the ink pads will need to be serviced at some point.

you can try following points.......

1.turn off the machine for at least 5 minutes and disconnect the interface cable to the computer.

2. push and hold down the "ink" button and the "paper" button and turn the printer on.

3. When the "paper" light flashes quickly release both the buttons and then immediately press and hold down the "ink" button only for at least 10 seconds.

**You will need to try this several times to get the sequence correctly.

If you need any kind of technical assistance, you can contact support cell at http://vtechsquad.com/printer-support/

tell me details when your problem arrive.........
If you set your paper in wrong position error light will flashing...........

The following is from the Epson Users Manual:
Troubleshooting
No lights on the control panel
Check the power supply cable connections and the power outlet.
ERROR LED on (not flashing) with no printing
If PAPER OUT is on, the roll paper is not installed or is near the end.
If PAPER OUT is off, the printer cover is not closed properly.
ERROR LED flashing with no printing (and no paper jam)
Printing stops if the head overheats and resumes automatically when it cools.
If overheating is not the cause, turn the printer off, and after 10 seconds, back on.
Removing Jammed Paper
CAUTION:
Do not touch the thermal head because it can be very hot after printing.
1. Turn the printer off and press the cover open button.
2. Remove jammed paper, reinstall the roll, and close the cover.
3. If paper is caught in the cutter and you cannot open the printer cover, open
the cutter cover as shown in illustration J.
4. Turn the knob until you see a triangle in the opening. This returns the cutter
blade to the normal position. There is a label near the cutter to assist you. See
illustration K.
5. Close the cutter cover.
6. Open the printer cover and remove the jammed paper.
Cleaning the Thermal Head
CAUTION:
After printing, the thermal head can be very hot. Be careful not to touch it and
to let it cool before you clean it. Do not damage the thermal head by touching
it with your fingers or any hard object.
Turn off the printer, open the printer cover, and clean the thermal elements of the
thermal head with a cotton swab moistened with an alcohol solvent (ethanol, or
IPA).
Epson recommends cleaning the thermal head periodically (generally every
3 months) to maintain receipt print quality.

It sounds like your print head is overheating. Clean as instructed above.

programmer can be used. example Makefile is included for LED flashing sample project in ..... but gives no such newsgroup error after specify the title. ...... Uses two-wire serial data communication through printer port. ...... The simple emitter-follower does not have a gain of exactly one,

http://www.icscale.com/TECH%20MANUALS/TMU220_TRG_RevD.pdf

From the manual its probably one of this item.
-printer temp is too high

-cover is not properly closed
-print head is not in the correct position
-paper cutter is not in the correct position
-paper jam


Try turning off the printer, remove the power cable, turn it on again for 5 seconds to reset it. Connect back power cable, press the feed button and turn it back on. The printer should do a self test, turn it off and on again after the self test. It should make the red light go away.