- [Narrator] Troubleshooting common printer issues,
part three.
And you can see we have our image
of our laser printer components, our diagram here.
And you'll want to refer to this.
And we're gonna talk about
three different issues you might see.
The first is vertical lines on the page, as well as streaks,
smearing and toner, not fusing to the paper.
This is all part of,
okay the toner isn't looking right on the page issue.
And so black lines or streaks can be caused by a scratch
on the print drum.
So you might see that sometimes.
And if there's a scratch on there,
then the toner's gonna kind of, fill in that scratch
and that's gonna get applied to the paper.
So you get those black lines or streaks.
And usually in this case
the whole toner cartridge needs to be replaced.
You might also get white lines on the paper.
This could be caused by a dirty Transfer Corona Wire.
You know, and we're talking about horizontal lines.
If you have some dirt specs here,
every time this turns
that dirt spec will be placed against the paper.
And that'll cause the Transfer Corona Wire to fail,
right in that little spot.
And it won't pull the toner off of the print drum.
So you get those white lines, every, you know, inch or so
or every half an inch or less.
So in that case you can replace
or clean the Transfer Corona Wire.
You might also see wide white vertical lines.
And those can occur when something is stuck to the drum.
Every time the drum turns, it puts a line
or a smear on the paper.
Redo that sentence.
Every time the drum turns
it'll create that vertical line on the paper
in that one area where the drum has something on it.
So, you know, you have to watch for that, also.
You might get some white lines because the drum.
And then again, the toner cartridge would need to
be replaced in that case.
Smearing can occur if the Fusing Assembly fails.
In this case, you might notice
some of the toner coming off the paper
and it gets on your hands because it wasn't fused correctly.
You know, that means that the Fusing Assembly has failed.
The heat isn't working
or the rollers aren't working properly.
And you can replace, you can sometimes clean the rollers,
but usually you'll have to replace the Fusing Assembly.
If it's an ink jet printer,
one or more of the ink cartridges might need to be cleaned
or replaced in this case.
And the printer might need to be calibrated.
If you see this type of thing,
where you're getting a lot of ink on the page
and you can actually, you know, it gets on your hands.
But for the laser printer,
you're gonna check that Fusing Assembly
if you see smearing occur.
So that's the first issue,
those vertical lines, the streaks, the smearing
and the toner, not fusing to the paper.
These are all toner issues.
You know, these are all part of the paper
is not looking right.
It's not getting the right images on there
because of some kind of physical failure here.
And the second issue, garbage printout
or garbled characters on the paper.
This can occur due to an incorrect driver.
Some technicians like to try close drivers,
and it's not a good idea, cause you could get this issue.
So you wanna use the exact driver
for the exact model of the printer
and it has to correspond
to that version of the operating system
that you're using as well.
Also you wanna make sure you know
whether you're using postscript or PCL.
So what type of printing system.
In addition, a bad Formatter Board
or printer interface can cause a garbage printout.
And these are usually replaced on the side of the printer.
You know, there'll be a cover with two screws
that you replace.
You remove the cover and then replace that board at PCB.
And the third image is the ghosted ima--
Do that sentence again.
And the third issue is the ghosted image.
Ghosted images or blurry marks
can be a sign that the drum has some minor imperfections,
especially if the image reappears
at equal intervals on the paper or on every paper.
So you wanna replace the drum
if possible or just replace the entire toner cartridge.
Another possibility is that
the Fuser Assembly has been damaged and needs to be replaced
but usually it's gonna be something with the drum
and the toner cartridge, if you have a ghosted image.
So there's three more issues for printers.
Again, know your components on a laser printer
to be able to figure out what the problem is
and that's it for this sub lesson.