Do-it-yourself canon lbp 2900 repair

Good day, everyone, and I would like to tell you a story about how I glued Canon LPB 2900 fins together (who does not know - this is such a printer). Well, how he glued it - not quite of course, since he had little glue. For a start, something inside began to chomp and creak. Chomping me and prompted me to take a desperate step - to take a screwdriver and start parsing.

In general, first you need to pull out the cartridge ... and unscrew the screws at the back

When both screws are unscrewed, you can start removing the sidewalls. Pay attention to the places marked in the photo. These are the side latches, and they must be opened first.

The back covers are not screwed in and can be easily removed with a screwdriver. I advise you to start pulling the side covers away from the back of the printer with force on the front. If you can't unhook them with your hands, use a screwdriver, but don't overdo it.

We continue to remove the plastic husk from our printer. After removing the sidewalls, calmly pull down the back cover, proceed to the top part. There will be no special problems with her, tk. Canon cares not only about quality and design, but also about the craftsmen who will subsequently repair the device. So, first, we release the part from the mounting screws (in the photo - a small red circle), and the coupler (in the photo - a place surrounded by a large circle):

After the operations done, the part can be dismantled without problems. Eventually:

After a quick inspection, I was able to find the problem - the thermal film broke. Because of this, both the chomps and the printed ones are sucking quality. We will change.

Video (click to play).

Remove the grill with guides (mounted on two screws from the inside)

To do this, we detach all the wires from the board (from the board in the photo above) and unscrew the 3 screws holding the upper printer assembly:

After that, carefully remove the assembly and continue to disassemble:

After removing the latches, we release one end of the drum, on which the thermal film is wound. This will be enough for us to remove the torn and put on a new thermal film.

And now, in the reverse order - where they got it from, they put it there ..

After fixing the assembly with thermal film, the printer acquires something like this:

For those who do not remember what was where, I leave this photo:

After the final assembly and insertion of the cartridge, the printer is ready for use:

That's all. Well, if you have any questions or have any problems during the repair - write. I'll try to answer.

A typical situation for Canon printers is a dark line at the edge of the page when printing. The client honestly said that a draft with a paper clip got into the printer. Let's start disassembling the printer.

So, here's our printer (Figure 1):

We turn the back of the printer and unscrew the 2 screws (Fig. 2).

Next, remove the side, back and front covers. They all have snaps.

Unscrew the 2 screws, carefully remove the white latch and remove the top cover of the printer (Fig. 3 and 4).

Disconnect the ribbon cable and wires going to the formatter board. We carefully release them so that they do not interfere with removing the stove. We take out the red ground wire (Fig. 5 and 6).

Unscrew 2 screws on the left and 1 on the right and remove the stove. (fig. 7 and 8)

So, before us is the fusing unit - the stove. Unscrew the 2 screws and remove the top cover of the stove. (Figure 9)

We see a defective thermal film and toner caked on it. (Figure 10)

Carefully remove the springs pressing the thermal film to the rubber shaft. (figs 11 and 12)

We take out the thermoelement. We remove the old thermal film. We clean the thermoelement from the old grease (Figures 13 and 14).

Apply a new thermal grease to the heating element and distribute it evenly over the surface.We put on the thermal film. The black stripe on it should be on the same side as the black gear on the rubber shaft. We put it aside.

We take out the rubber shaft and bushings. We check them for wear. Change if necessary. (fig. 15 and 16)

We put new or cleaned bushings in place. We put a little grease on them. We put back the rubber shaft.

Next, we assemble the stove in the reverse order, put it in place and in the reverse order we assemble the printer.

So let's get started. First, let's remove all the plastic: