Diagnose a Failure on Your Printer

It happens that his printer no longer works as it should.

To find out how to solve the problem, it is essential to determine the origin of the problem!

To try to do something more concrete, I leave one example that we met in the shop at the beginning of the week.
A client bought us a multifunction laser of the Brother brand printer.
It worked perfectly well until then and the next day, the documents came out with a line up and down the page.

Generally, there are two main origins to various problems: the hardware or the software.

The first thing to do in this case is to determine when occurs the default: printing from the computer, to photocopy, all the time…

  1. We launch a print from the computer, it comes out perfectly, without any printing defect. This suggests that the cartridge is not in question. If that were the case, we would have had the same failure to appear. Similarly, it is not a software problem (drivers in print that have been uninstalled or USB cable which yields even if it is rare).
  2. We’re launching a photocopy by placing the document on the glass (flat bed scanner). Again, the document comes out perfectly. It is not the lamp in the scanner that is damaged, otherwise the defect would be present.
  3. We’re launching this time a photocopy through the document feeder. The fault this time! The problem is at the level of the document feeder. Because the printer has only one light to scan, and it works well by photocopying a document on the flatbed glass, there is something that bothers the scan (the sheet scrolls in front of the lamp that is fixed, so if something is between the two, it will produce a great line up and down the document)

At first, we had seen nothing.
We cleaned using a microfiber and product to glass (given by the Brother customer service solution) the small glass part where passes the document, as well as the white metal bar that plate the document on this small glass portion, but the default was always there.

Looking for vintage electronics, we noticed a little point (in the part surrounded by the image below). Most likely a little bit of glue a sheet that is passed in the printer (scotch, blanco…) and that is deposited on the glass part!

If the technician Brother intervened, our client would have been charged, because the material was not an issue!

The advantage of working with us, it is that we are a human sized company and that wherever possible, we try to make service to our customers.

We made two return trips at our customer (at the end of the street, ^^), we contacted the Brother support and we were not charged, even if supplies were not the cause of the problem!

This customer we have trusted by buying his printer at home and when he had a problem, he had the right reflex, contact us first to identify the cause of the failure.

Update: we have received a new printer and this problem needs to be recurring, because now, they had a small sticker indicating to clean this room in case of printing defects.

Quick Summary:

1 is. the printer well connected to the computer (USB cable, WiFi connection)?
If printing works well in photocopying, but not from the PC, it is likely that concern comes from there.

2 are. the cartridges involved?
Test printing from the computer and a photocopy.
If the fault is still present, cartridges are not at issue.
Conversely, if the defect appears systematically, there are strong bet that the cartridge (or drum) be damaged or end of life.
(there is an article dedicated to the problems encountered on inkjet cartridges, here ))

  1. the scanner lamp is damaged or is that something obstructs the ray of light?
    When your printer has a flat bed scanner + a scanner with a document feeder, you must test both.
    Either the default appears in both cases and the lamp is probably broken.
    Either something prevents light from the lamp to scan the document, in which case it is necessary to clean the glass surface and the metal bar with product in glass.
    If the fault appears only in one of the cases, you know precisely where to clean! (either that of the document feeder, or the flat bed scanner part).
  2. There’s always a paper jam!
    See our article on this topic.

As usual, if you have any questions, use the comments below.