Troubleshooting Of Image Problems - Oki C310dn Maintenance Manual

Oki Data CONFIDENTIAL

7.5.3 Troubleshooting of image problems

(1) Color is faint and fades across pages (see Fig. 7-2 A). ................................... 181
(1-1) Color is faint and fades. .................................................................... 181
(2) The white area of printed pages is dirty (see Fig. 7-2 B). ................................ 182
(2-1) The white area of printed pages is dirty (partially). .......................... 182
(2-2) The white area of printed pages is dirty (all over). .......................... 182
(3) Printed pages are blank (see Fig. 7-2 C). ........................................................ 183
(3-1) A printed pages are entirely blank. .................................................. 183
(4) Vertical lines are produced in printed pages. .................................................. 184
(4-1) Fine lines (colored) (see Fig. 7-2 D) ................................................ 184
(5) Print quality problems appear periodically (see Fig. 7-2 E). ........................... 185
(5-1) Print quality problems appear vertically and periodically. ................ 185
(6) Color misregistration is significant. ................................................................. 185
(6-1) The message "Adjusting color" displayed at power on stays
for a short time. .............................................................................. 185
(6-2) Although the REG ADJUST TEST result of the engine
maintenance function is OK, color misregistration occurs. ............... 185
(7) Black filled-in printing ..................................................................................... 186
(7-1) Printed pages are filled-in black entirely. ......................................... 186
(8) Color jobs are printed in monochrome, not in color. ....................................... 186
(8-1) False setting of the limited-color printing menu ................................ 186
Note! To replace the CU/PU board with a new one, load EEPROM chip data on the
old board and copy it to the new board.
44346001TH Rev.1
B
A
Faint and faded Dirty white area
across the page
D E
Vertical black Periodic problems
stripe/line
Fig.7-2
7. TROUBLESHOOTING
C
Entirely blank
F
Vertical white
band/line
10 /