Ricoh M156, Руководство по обслуживанию

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Troubleshooting
M156/M157/M176/M177 6-16 SM
6.6.2 IMAGE QUALITY PROBLEM
problem Cause/Solution
Blurred or too light

The polygon mirror of the laser unit is dirty.

Adjust the image density.

Paper is damp. Use paper that has been stored properly.

If you enable [Toner Saving], printing is generally less
dense.
User Tools > System Settings >Toner Saving: Off
Printer Driver > Print Quality > Toner Saving: Off

Toner is almost depleted. Replace the print cartridge.

Condensation may have collected. If rapid change in
temperature or humidity occurs, use this machine only
after it has acclimatized.
Dirty or too dark

Image density is too high. Adjust the image density.

Toner on the printed surface is not dry.
Do not touch printed surfaces immediately after copying.
Remove freshly printed sheets one by one, taking care
not to touch printed areas.

The exposure glass or ADF is dirty.
Dirty background

Replace the print cartridge.

Adjust with “Charge Bias” in the Maintenance Mode.
Vertical black lines

The stripper pawls of the fusing Unit are dirty.

The exposure glass or ADF is dirty.

Replace the print cartridge.
Vertical White lines

The exposure glass or ADF is dirty.

Toner is almost depleted. Replace the print cartridge.
Horizontal black lines
Humidity level surrounding the machine may be too low.
Refer to "Dark lines in halftone areas at 75mm Intervals".
A moire pattern is
produced.
The original probably has heavily lined or dotted areas.
Switching the setting for image quality between [Photo] and
[Mixed] may eliminate the moire pattern.