Kyocera C5020N - FS Color LED Printer, Service Manual

Page: 83 / 216

2F3/2F4
1-5-31
(10) Spots are printed. Causes
1. Dirty or flawed drum.
2. Deformed or worn cleaning blade in the drum unit.
3. Defect fur brush of the primary transfer cleaning unit.
4. Flawed developing sleeve roller.
5. Dirty heat roller and press roller*
1
/belt*
2
.
Causes Check procedures/corrective measures
1. Dirty or flawed drum.
Perform the drum surface refreshing. See page 1-4-17.
2. Deformed or worn cleaning blade in the
drum unit.
Replace the drum unit. See page 1-6-13.
3. Defect fur brush of the primary transfer
cleaning unit.
Replace the primary transfer cleaning unit. See page 1-6-24.
4. Flawed developing sleeve roller.
Replace the developer. See page 1-6-12.
5. Dirty heat roller and press roller*
1
/belt*
2
.
(11) The leading edge of image
begins to print too early or too
late.
Causes
1. Registration clutch operating incorrectly.
2. Defective engine controller PWB.
3. Defective main controller PWB.
Causes Check procedures/corrective measures
1. Registration clutch operating incorrectly.
Check the installation of the registration clutch. If it operates incorrectly,
replace it.
2. Defective engine controller PWB.
Replace the engine controller PWB (A0004). See page 1-6-41.
3. Defective main controller PWB.
Replace the main controller PWB (A0010*
1
/A0011*
2
). See page 1-6-34.
*1
: 16 ppm printer,
*2
: 24 ppm printer
*1
: 16 ppm printer,
*2
: 24 ppm printer
Clean the heat roller and press roller*
1
/belt*
2
. See page 1-4-18.