Minolta Di 620 Manual page 294

1155SBT0503A
5-3. Troubleshooting Procedures by Image Failure
<Image Failure Samples>
1) Blank copy
4) Foggy background
7) Blank streaks or bands
10) Uneven image density
13) Periodically uneven image
2) Black copy
5) Black streaks or bands
8) Void areas
11) Gradation reproduction failure 12) Rough image
T-79
3) Low image density
6) Black spots
9) Smear on back
1155T001AA