Question about HP DeskJet 1600C InkJet Printer
I now know the reason for problem. It is in fact a design problem by HP. They have not protected the laser scanner unit properly. Toner powder can get into the laser unit. To cure the problem you have to strip down some of the printer. First remove the toners, Remove the back cover remove two PCB under the rear cover, then remove the supporting metal panel. Then removing the laser unit. There are two small spring metal cover plates that have to be removed to get the bottom two screws of the laser unit. Best to the lean the printer on its front as these plates are on the bottom of the printer.
When you have got that far, you have to remove a small spring and then undo just one screw that holds the laser unit plastic front cover.
When this cover is removed you can see the fancy optics of the laser unit. You will find a covering of toner dust all over, the angled mirrors and lenses. The bottom angled mirror having the most toner dust this is the magents mirror.
I used a camera lens cleaning brush to remove all of the toner dust. Shining a small tourch around will high lite the dust on the various parts.
When this is done then you have to re-assemble it all.
If everthing has been done correctly then you are back in business.
Posted on Jul 17, 2009
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Posted on Jan 02, 2017
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