Printer Maintenance

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Time
12 hours 9 minutes
Difficulty
Beginner
CEU/CPE
12
Video Transcription
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>> This is Lesson 11.2, printer maintenance.
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We're going to talk about maintenance on
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the printers that we covered earlier in the series.
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Let's go ahead and get started.
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In this lesson, what we're going to do is go over
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some maintenance tips and suggestions and steps that you
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need to do in order to maintain
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the three common printers in
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our printer technology series,
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the impact printer, the inkjet printer,
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and the laser printer.
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If you encounter any of
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these printers while you're on the field as a technician,
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you will know what steps you need to take in order to
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maintain and provide maintenance to any of these devices.
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Let's go ahead and get started. First, we're
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going to start off with the impact printer.
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One of the common things that you're going to do or
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need to do with the impact printer is replace the ribbon.
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Now, the ribbon is a self-contained cartridge.
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It's an all-in-one cartridge with
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the ribbon that's inside this spool.
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The ribbon is spooled up into the cartridge area,
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and there is unexposed area that
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goes right by where the printer head goes.
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What you would find is as
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the ribbon is worn and
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it's printing more and more copies,
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the text will get lighter and lighter and lighter.
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At that point you'll know that
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you'll need to replace the ribbon.
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Again, it's a module unit.
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It's easy to replace,
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shouldn't take you no more than a minute to replace this.
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Ribbons are very specific to
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the model of the dot matrix printers,
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so you have to make sure that you
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get the correct ribbon for that printer.
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What you would do to replace
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the ribbon is there will be a lever
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or a guard that you will need to
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undo and pick up the entire unit,
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just pop it out and get
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the new unit and pop it right back in.
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It's that easy. Replacing the printer head from
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time to time because that is a moving part,
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the printer head will get worn and it
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will be needing to be replaced.
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In order to replace
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the printer head on a dot matrix printer,
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what you'd have to do is look
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for a release lever or a bar.
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Some models may vary.
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Released that lever or they remove that bar and you can
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pull the print head right out
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and replace it with the new print head.
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Now, be careful because this is
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a moving part and they tend to build up heat.
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You want to unplug the unit before replacing the unit.
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Paper. Of all the steps of
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an impact printer or a dot matrix printer,
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paper may be the most challenging to be honest with you.
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Now remember the paper is a continuous feed paper.
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It's one long sheet of paper.
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The paper is fed by
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those tractor wheels on the side of the printer.
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Some of the paper's perforated,
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so you have to make sure that lines up as well.
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What you'd have to do is line
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this paper up and feeding in with
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the tractor wheels to pull it through your printer.
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Again, you'll see here on the image that
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sometimes the paper here will have
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a form that needs to be
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aligned up correctly what the printer,
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so you'd have to line up as well.
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Make sure the paper is lined up correctly
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because that will cause problems in the hand.
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Forms must be positioned in
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the right place so texts can fill out in
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the spaces on those pretty form papers.
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Also, texts may have predefined fields.
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Again, you want to line it up to
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the printer head and each section will be perforated.
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You'd have to line those up to make
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sure it catches correctly.
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Also, what you want to do on
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the paper is because it's a continuous row,
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you want to make sure that it's
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flowing easily because you don't want to have
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any binds or anywhere where
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it can grab because it will rip,
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because it's a continuous flow of paper,
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it's just going to continuously
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flow as this printer prints.
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Inkjet printer. One of
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the common things that you'll do on
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an inkjet printer is the print heads,
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cleaning the print heads.
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Some machines have a daily print head cleaning schedule
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and it will automatically clean.
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Now if your printer does not
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have a daily schedule like that,
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routinely check the print heads
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to see if they're dirty of filed.
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You'll know that because if you look at
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the ink cartridge and you pull it out,
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you'll see their foldup on the heads below,
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you'll see ink buildup.
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Those will need to be cleaned.
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Look for streaks on the paper as well,
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or sections missing in color.
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Process can be started manually,
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meaning the process to clean ink
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heads through calibration process on that printer.
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Some print heads,
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again are separate from the ink jet cartridges and
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they can be cleaned separately so
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the print heads themselves can be removed.
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Replacing the cartridges in
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an inkjet printer is fairly easy.
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A lot of times in the many models,
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when you open the door to get to
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the inkjet cartridge themselves,
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the carriage will move it to the home position so you can
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replace those cartridges when the cover is open.
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Most common colors that you're going to
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have to replace is the cyan,
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the magenta, the yellow,
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and the key, which stands for black.
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Some of these units will be combined,
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some of them will be separated.
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A lot of times these cartridges are recyclable.
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You want to check with your local office supply store
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and see if they offer a recycling plan.
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But again, replacing
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inkjet printer cartridges is fairly easy.
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Calibration after you finish your inkjet maintenance,
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as far as replacing a toner inkjet cartridges,
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you want to provide a calibration.
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Then again, that calibration will sometimes be
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automatic after you replace the inkjet cartridges.
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Or you may have to start it from the menu.
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You may have to make some adjustments,
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as well as with the calibration.
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It aligns the nozzle to the papers,
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line should be clear and sharp when it
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does the calibration test and the color should be even,
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they should not be blotchy or faded.
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Another common thing that you will have to
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do with the inkjet printer is clear paper jams.
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Before attempting to clear any jams,
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remove any loose paper from the unit.
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Remove the paper tray.
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That's a good tip right there.
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Remove the paper tray so you can get access to the paper.
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Removing the paper that's into paper paths.
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Sometimes you may see papers hanging out or partial
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page that did not feed all the way into the printer.
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You want to grab that using firm pressure but
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avoid ripping it because if you rip
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it and may cause even more problems.
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Once it's clear, tried to print job again.
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Moving on to the laser printer.
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Now one of the most common maintenance functions that you
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perform on a laser printer is
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replacing the toner cartridge.
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Now, the toner will be low before emptying,
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and many models will
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have a low toner warning on the screen.
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It'll tell you and some of them will tell you how
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low the toner is getting.
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A particular model that I've just recently
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worked on had five percent,
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10 percent lives on the screen,
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it shows you as far as the different levels
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that the toner is getting to,
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so there'll be an error message or
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a warning message on the screen.
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Now, some toner cartridges contain the drum.
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They're all in one unit.
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Some drums are separate,
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but some toner cartridges contain the drum,
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that is called an Organic Photoconductor Drum.
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What you want to do is because
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this drum is photosensitive,
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you want to keep it in a bag until
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you're ready to replace that.
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Once you're ready to replace it,
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you want to power down the unit before
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you replace the toner cartridge,
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remove all the packaging from that toner.
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A lot of times there are ribbons
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or strips of paper or plastic in there,
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preventing it from the toner leaking
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while it's in travel.
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You want to pull those free and go ahead and
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insert that toner cartridge into your printer.
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The toner cartridge replacement
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will vary depending on the printer that you're changing.
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You'll see that it may be a tube that you insert.
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Color laser printers will be
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individual toner cartridge that
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you will remove one-by-one.
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Some will be an all in one unit where you
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just pull or replace
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or place it into like on the picture on the far right.
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A maintenance kit for your laser printer is
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generally the most common use parts,
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they wear out before any other parts.
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These are the parts that's moving.
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They're heated continually.
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These are the parts that's always in
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use and they tend to wear out quicker.
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The vendors and manufacturers
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have put these parts together in a kit.
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They may contain feed rollers,
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a fuser unit, and other items.
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You want to check the time for
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maintenance for your printer by using
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the printout from the printer's page counter
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or other documentation,
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they may have a routine schedule for you to check
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these items on these devices.
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Again, if you notice that the rollers are worn,
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your printing is a little bit lighter,
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it may be time to replace
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some of these parts with this maintenance kit.
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Power down the unit before performing
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any maintenance and
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reset the page counter when you're done.
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Afterwards, you want to do a laser printer calibration,
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process maybe prompted by the printer or it maybe manual.
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A lot of times when you replace
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the maintenance kit and you put everything back together,
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it may prompt you to do
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this calibration or
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check the manufacturer's documentation
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as far as the schedule or how
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your laser printer would perform those,
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will consist of a series of prints
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with density settings for the printer.
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Here's a printout right there with
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one particular one that shows you colors.
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It makes sure the colors are not faded or splotchy.
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Sometimes they will even have line,
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they'll print out to make sure your lines
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are sharp and crisp.
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Cleaning your laser printer.
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Laser printers tend to get a lot of dust inside of them.
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Check your manufacturer's recommendation
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on cleaning the internal areas
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of your particular laser printer
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or the laser printer that you're dealing with.
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IPA, Isopropyl Alcohol and
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water are common chemicals that you can use.
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Use recommended chemicals by that manufacture.
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Clean rollers with IPA.
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Inside of the printer,
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don't use compressed air or vacuum,
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wipe the dust away,
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that way you're not causing more dust to settle in
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other areas of machine and call
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further problems down the road.
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On the outside you want to clean it with a damp cloth.
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There may be other instructions,
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again per that laser
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printer's maintenance documentation,
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so check with your manufacturer.
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What we've done is went through maintenance steps
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for the three printers that we
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cover in our printing technology areas.
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That would be the impact printer,
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the inkjet printer, and the laser printer.
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We've talked about common things
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that you would need to do to
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maintain the good working condition of those machines.
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Also, if you're out in the field as a technician and
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you're called to troubleshoot one of
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those devices, you'll know what to do.
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That is it for this lesson and we
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will see you in the next lesson.
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