Printing A Test Page; Cleaning The Machine; Machine Error Codes - Samsung SF-555P Disassembly Instructions Manual

Samsung SF-555P Toner Cartridges
(Continued)

Printing a Test page:

The best way to run test pages is simply to make a copy. Take a printed page with both text and graphics, and run
a few copies.

Cleaning the machine:

Other than the cartridge bay, the document feed rollers and scanner must also be cleaned. Although the adjustment
listed above will take care of dirty copies, this is by far a better way to go.
Lift up the top cover. There is a white roller attached to the lid. Rotate the right side of the roller until the bushing al-
lows the roller to be removed. Clean the roller with a soft lint free cloth and water. DO NOT use any chemicals on
this roller! Re-install the roller, lock the bushing in place.
In the center of the lid is the ADF separation pad. Clean the rubber with a good rubber cleaner.
The scanner glass is located at the base of the lid on the body of the machine. Clean it with a soft lint free cloth. If
stubborn dirt will not come off, dampen the cloth with water, and dry the glass. It is not recommended that anything
harsher than water be used on the glass. Be careful not to scratch the glass!
Common Cartridge Problems
A Dirty or Bad Primary Charge Roller (PCR); located Inside the cartridge, this will show on the test print as verti-
cal gray streaks down the page, as a gray background throughout the page, as ghosting where part of a previously
printed area is repeated, or as a mark that repeats every 37mm.
Dirty PCR Connection; This will show as horizontal dark black bars across the page, or as shading throughout the
page.
Scratched Drum; This is shown by a very thin, perfectly straight line that runs from the top to the bottom of the test
page.
Chipped Drum; This will show as a dot or series of dots that repeat every 75mm.
Light Damaged Drum; This will show up as a shaded area on the test print that should be white. Again this will re-
peat every 75mm.
Bad Wiper Blade; This will show as either a gray line approximately 1/8" thick, or as shading across the entire
page. In either case there will be a film of toner on the drum surface.
Bad Developer Roller; This will show up as light print or as a mark that repeats every 32mm

Machine Error Codes:

As with most of the newer Samsung models, the error codes are all in English and are self-explanatory. The biggest
problems you will run into are paper jams, and a dirty scanner. Keeping the machine clean with periodic mainte-
nance will take care of most of them.
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