Kyocera TASKalfa 6501i Service Manual page 579

(13) Image is out of focus.
Print example
Defective part
Paper
1
Drum unit
2
LSU
3
(14) Poor grayscale reproducibility.
Print example
Defective part
Image adjustment
1
1. Drum condensation.
2. Dirty LSU slit glass.
Check description
1. Check that the paper has
moisture absorbed.
2. Check that the paper has
stored in a humid place.
Check that the surface of the
drum has dew condensation.
Check whether the LSU slit
glass is contaminated in its
entirety.
1. Poor image adjustment.
Check description
Check if image adjustment is
insufficient.
Cause of trouble
1. If the paper is damp, replace.Choose a dry
place to store paper.
2. If necessary, install a cassette heater.
(see page 1-2-72)
Execute Drum refreshing.
System Menu > Adjustment/Maintenance
1. If the LSU slit glass is dirty, execute Laser
scanner cleaning.
2. Replace the LSU. (Perform U119)
(see page 1-5-49)
Cause of trouble
Execute U464 Calibration and U410 Grayscale
Adjustment. (see page 1-3-175,1-3-151)
1-4-219
Corrective Action
Corrective Action
2N8/2N7