Kyocera DP-480

2NC/2NF/2NG/2NN/3P7/3P8/3P9
1-4-36
1-4-4 Image formation problems
Isolate the component an image defect has occurred from.
<A guide to isolate the component of the cause.>
Run U089 to print a test page and check whether an image defect happens.
YES: Main unit as the cause of defect
NO: Scanner as the cause of defect
Perform enlarged or reduced copying and verify if the defective images are enlarged or reduced, accordingly.
YES: Scanner as the cause of defect
1. Scanner as the cause of defect:
If the defect occurs with copying or sending, refer to P.1-4-37.
(Defects caused by a reading error that occurs at the original (glass) LED lamp to CIS.)
Isolate the problem at the location that the originals are scanned.
a. DP (read by CIS)
b. On the contact glass (read by CIS)
2. Main unit as the cause of defect: refer to P. 1-4-37.
(A defect of image forming occurs from the rendering process that involves charging, drum, LSU,
developer, and primary transferring.)
<Flow of image data>
CIS
Main/Engine PWB
APC PWB
(LSU)
CIS PC
Main/Engine PWB
Printer driver
Main/Engine PWB
APC PWB
(LSU)
Copying :
Sending :
Printing data from PC :