Kyocera Mita FS-C5016N - Color LED Printer Service Manual page 69

(7) White streaks are printed
vertically.
Causes
1. Defective LED print head output.
A. Poor insertion of LED cleaner.
B. Dirty SELFOC lens of LED print head.
C. Focus is lost with the LED print head.
D. Defective LED print head.
2. Defective main charging output.
A. Adhesion of oxide to main charger wire.
B. Dirty main charger grid.
C. Dirty main charger shield.
3. Foreign object in one of the developers.
4. Adhesion of soiling to primary transfer belt.
(8) Black streaks are printed
vertically.
Causes
1. Dirty main charger wire.
2. Poor insertion of the main charger wire
cleaner.
3. Dirty or flawed drum.
A. Dirty drum.
B. Flawed drum.
4. Deformed or worn cleaning blade in the
drum unit.
5. Defect fur brush of the primary transfer
cleaning unit.
6. Worn primary transfer belt.
Causes
1. Defective LED print head output.
2. Defective main charging output.
3. Foreign object in one of the developers.
4. Adhesion of soiling to primary transfer belt.
Check procedures/corrective measures
Check if the LED cleaner unit is properly seated. If necessary, reseat it
properly.
Clean the SELFOC lens of LED print head by using LED cleaner.
Check the four colors of image by using the test print of service mode. If
the defect appears on a particular color, replace the LED print head for
that color. See page 1-4-13
Check the four colors of image by using the test print of service mode. If
the defect appears on a particular color, replace the LED print head for
that color. See page 1-4-13.
Clean the main charger wire by using main charger wire cleaner.
Clean the main charger wire by using main charger grid cleaner.
Replace the main charger unit.
Check the image by using the test print of service mode. If the white line
appears on a particular page, replace the developer for that color (See
page 1-4-11, 1-6-11).
Replace the primary transfer unit. See page 1-6-14.
Causes
1. Dirty main charger wire.
2. Poor insertion of the main charger wire cleaner.
3. Dirty or flawed drum.
4. Deformed or worn cleaning blade in the drum unit.
5. Defect fur brush of the primary transfer cleaning unit.
6. Worn primary transfer belt.
Check procedures/corrective measures
Clean the main charger wire by using main charger wire cleaner.
Check if the main charger wire cleaner is properly seated. If necessary,
reseat it properly.
Perform the drum surface refreshing. See page 1-4-13.
Replace the drum unit. See page 1-6-12.
Replace the drum unit. See page 1-6-12.
Replace the primary transfer cleaning unit. See page 1-6-16.
Replace the primary transfer unit. See page 1-6-14.
FS-C5016N
1-5-25