In cases where your printer is printing light or light on one side of the page you may have a dirty/dusty laser unit. This can be fixed by cleaning the mirrors and the polygon mirror surfaces. This is a quick guide on how to clean a laser unit. It applies to the Brother HL5140 but…
Here’s an interesting fault I came across with printers using the DR150CL drum unit… This article applies to Brother DCP-9040CN, HL-4040CN, HL-4050CDN, MFC-9440CN, MFC-9450CDN, MFC-9840CDW series printers. This particular fault is an easy one to check on and fix (see pics). If your printer is producing pages that looks like the picture to the left, then…
If you are getting void lines and streaking through the print outs on a printer using the DR150CL drum unit you may wish to try this as an easy 5 minute fix. This article applies to Brother DCP-9040CN, HL-4040CN, HL-4050CDN, MFC-9440CN, MFC-9450CDN, MFC-9840CDW series printers. The DR-150CL drum unit has a built-in charge wire cleaner. To…
The laser glass slits can get dirty and affect copy quality over time on any laser printer (usually causes fading of prints). On Brother MFC9440CN it is easy to clean the glass slits. First remove the drum unit and toners. Inside the printer above the drums you will see 4 slots. Take a clean lint free cloth…
A common problem with high volume printers it the consumable components wearing out. On the HP LJ 1320 these include the drum/toner, feed rollers and fuser assembly. The end user can usually identify these problems by visual inspection. Below are some pictures showing wear on the feed rollers and the fuser assembly. Fuser Assembly Wear…