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The flashing light could either indicate a cartridge problem or the printer carrier has stalled.
Test the cartridges one by one and do the printer hardware test (refer to the relevant document for your printer) to establish which one is defective. The defective cartridge needs to be changed. To do the hardware test, follow the steps below:
Switch the printer off.
Put one sheet of paper into the paper feeder.
Press and hold the power button and the paper feed button for three seconds until the power light comes on.
Release both buttons. After three seconds, the printer will start to print. You should obtain a page containing a series of horizontal color lines, and a thick black line below these. All the lines should be solid.
When the test is complete, switch off the printer. NOTE: If you do not turn off the printer, it will keep on printing this page.
To check if you have a cartridge carrier stall, follow steps below:
First unplug the printer.
Move the cartridges to the left by hand. In order to do this, you need to grip the top of the carrier belt (a black/grey belt with cog-like teeth) and pull it towards the right-hand side of the printer.
Once the cartridges have been moved across, you can clip them out.
Try to print without the cartridges in the carrier.
If you no longer have a carrier stall, put the cartridges back into the carrier and clip them into place.
If the red lights are flashing simultaneously, it means that there is something blocking the printhead from moving. check if all inks are installed properly and the ink carriage cover is closed tight. If both red lights are flashing alternately,it means that the waste ink pad is full and needs to be replaced. This part is not user replaceable so you need to take in the printer for service.
Sounds like your photocoductor is at lifes end. You can reset it by doing the following
1. Turn the printer off.
2. open the front cover
3. hold down the cancel X button while turning on the power and keep holding down until all lights stop flashing. Then let go of the x button and all lights should start to flash, close the front cover...and it should reset. You may have to turn the printer off and then back on once to be sure it is reset.
When all lights flash it's a service problem. You press and hold the go button and see what lights are on then.error light means main PCB failure, Toner light means fuser failure, drum light means laser failure. Toner and error light means main motor error, drum plus error light means its a fan failure.
1. Disconnect the USB cable and the printer power cable.
2. Please disconnect the power supply from the back of the printer.
3. Then remove the cartridges from the printer.
4. Please reconnect the power supply back and turn on the printer.
5. If lights are blinking then printer encoder strip is most likely the problem. Unplug the power from the printer. Open the front cover and move the cartridge carrier to the center. You should see a white ribbon cable, a thin plastic strip and a black belt with teeth.
6. The thin plastic strip is the encoder strip. It rides in a sensor on the back of the cartridge carrier that you will not be able to see. Reach in with the first finger of either hand and carefully strum the strip as if playing a guitar.
7. The strip will need to be lowered slightly and brought towards you slightly. Please be careful not to break the strip or your printer will not function. Once you believe the strip is set correctly, plug the power back and let us know if the lights are still blinking.
8. If you cannot repair the strip, please let us know so that we can assist you further.
Please Note: Fixing the encoder strip is a delicate procedure. During the troubleshooting, if the strip breaks, you will not be able to use the printer.
9. However, if lights are not blinking then try inserting one cartridge at a time and check if you can see any lights blinking. If light blinks with one cartridge then that cartridge is defective.