My printer has an orange light showing next to a symbol which looks like a beaker with a triangle of 6 dots in it. What does this symbol mean? Thanks

Canon printer light blinking error is a common error. Each printer features a flashing light to indicate its functionality. With Canon printers, you have flashing green and orange lights to inform you of any existing problems. It is suggested to carefully observe the number of flashes or the pattern of blinking lights as this will help you to understand the problem. And depending on the pattern, you can follow our canon printer troubleshooting guide mentioned below to solve that issue.

What does triangle with lightning bolt mean on Canon printer?

The orange triangle with the lightning bolt comes on when the printer is plugged in. The white light above the power button is on, but the printer is otherwise dead.

What does the orange triangle mean on my Canon printer?

When a printer error occurs, the Alarm lamp flashes orange as shown below. The number of flashes indicates the type of error that has occurred. Count the flashes and take the appropriate action to correct the error. Power Lamp Flashes Green.

What does the triangle symbol mean on my canon printer?

Seeing a yellow triangle with an exclamation mark usually indicates that a hardware device needs to be updated. If you are seeing the mark in Device Manager, we recommend checking the device status of the printer driver.

What does the flashing yellow light mean on Canon printer?

When an error occurs in printing such as the machine is out of paper or paper is jammed, a troubleshooting message is displayed automatically. Take the appropriate action described in the message. When an error occurs, the Alarm lamp flashes orange and a Support Code (error number) is displayed on the computer screen.

Paper could be lodged in printer somewhere. Check front and rear area where paper runs through. Then unplug and try to reset

From left to right:
(Lights)
Exclamation point: Error
Weird Monitor beat symbol: Jam
Paper: Out of paper
Toner (Triangle leading down to dot pyramid): Toner refill
Lightbulb: ready

(buttons)
Greenish Play button (square with triangle): Continue
Red button with x: Stop/Cancel
Dell 2230 User Guide Page 1

There is a problem with the printer. Press resume button again and see if the light orange light goes off. If not then switch off the computer wait for sometime and start again. If it still persists read the error code.

This is a link to HP for your Color Laserjet 2550n instruction manual. Look on pages 97 & 98.
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c00189910/c00189910.pdf
And for further troubleshooting, try this link.
http://h20499.www2.hp.com/gts/sparks/public/IPG_CLJ2550_All_toplevel_WhatDoYouNeedHelpWith_PUB_EN?lang=en&cc=US&product=Printer&series=na&subseries=na&prodTypeId=18972&prodSeriesId=388394

It means your cartridge is almost empty.
Gerrit Jan

It is out of paper.

The symbol on top that looks like a beaker full of marbles is the symbol for the toner cartridge (notice the same symbol is found on the button that opens the toner cartridge door). If this light is on, either the toner cartridge is getting low, or the cartridge needs replaced.

The triangle dots are "need toner"
the cylinder is "need new drum"
the jagged line W means "paper jam"

I beleive it's the toner, it will need to be changed. You may start to see some fading soon.