What is the meaning of the Red & Blue flashing lights on the printer?

Cheaper to replace than fix, trust me on this.

• Solid Blue - Normal operation, "Touch" mode is activated.
• Flashing Blue - Normal operation, the hands-free mode is activated.
• Solid Red - Warning mode - Replace batteries as soon as possible. While the water is running Solid Red LED is illuminated. When the water is off, the Red LED flashes once every 5 seconds. The faucet operates normally, solenoid valve is open.
• Rapid Flash Red - Alert Mode - Battery Failure Imminent. The Red LED flashes once a second. The first time the faucet is used, the Red LED will turn ON, the solenoid valve will be opened and remain open. The manual valve must be used until the batteries are replaced.
• Solid Red - Lockdown Mode - Replace Batteries. Extremely Low Batteries - The RED LED is ON, and water will not flow. The solenoid valve is closed and faucet will not operate until batteries are replaced.
• Long Flash Red (2 seconds on / 2 seconds off) - Board error, replace electronics kit, RP53230 See manual bypass of electronics section of Installation instructions.

If that lines are consistent with the red and blue and it does not appear during black and white print that means the cleaning blade in the affected color units need to be replaced

The problems you checked are indicated by a blinking red light (it denotes minor errors). A solid red light usually means that one of the toners is exhausted. If you look in the task bar, there's a little blue S; double click on this to launch Smart Panel, our monitoring software. It will tell you the specific error message. If one of the toners is showing empty already, are you sure this wasn't a used model or possibly a display unit that people would have been printing on?

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.

The flashing means that the toner and/or the imaging drum is empty or missing (printing halts on these errors). Lights on steady means low toner.

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.

YBC (/\)

basically for this printer I have found that just restarting your computer will solve almost anything. make sure there is no paper left jammed in the printer and restart. sometimes you have to delete the print job in the printer que. there should be a printer icon down my your clock, right click, open active printers, and delete your file. restart your computer and try again

From the OKI site, I found this information. My problem is a Flash 2 Blink, which is a problem with the cover or minor error, whatever that means. I can't figure out how to fix it. Any suggestions greatly appreciated!

Flash type Ready LED (Green) Manual feed LED (Amber) Error LED (Amber) Meaning Flash 1 -- slow blink X The printer is processing data when printing has been suspended. X The image drum required changing or toner is low. Flash 2 -- blink X The printer is receiving and processing data during printing or the printer is resetting itself. X The printer is requesting manual paper feed. X There is a printing error, problem with paper or a cover open. X X X There is a minor error with the printer. Flash 3 -- rapid blink X X X There is a major error with the printer.