Toshiba 3511 ユーザーズマニュアル

Is the original cover or the 
optional reversing automatic 
document feeder firmly closed?

Close the cover or the feeder 
properly to shut out any outer 
light.

"When Placing an Original on the 
Glass"   Page 47

Are the original glass, the 
original cover and the scanning 
area dirty?

Clean them up.

"Weekly Maintenance"   Page 290

Is the image density set 
properly?

Adjust the image density 
properly with the [AUTO] button 
or manual density buttons.

"7.COPY DENSITY ADJUSTMENT" 

 Page 96

Are 2-sided originals used?

As the other side of the originals 
can be seen, adjust the image 
density properly (lighter) with the 
background adjustment 
function.

"4.BACKGROUND ADJUSTMENT" 

 Page 101

Are originals with high 
transparency used?

Place a blank sheet of paper 
with originals of the same size or 
larger over the original.

"When Placing an Original on the 
Glass"   Page 47

Does the entire originals lie 
properly on the surface of the 
glass?

Place the original on the glass 
or the reversing automatic 
document feeder and close the 
original cover firmly.

-

Is the paper moist?

Replace it with new paper.

"2.ADD PAPER SYMBOL"   Page 
250