Oki Data CONFIDENTIAL43827101TH Rev.2 222 /Figure 7.2Light or faded imageon whole pageAVertical black belt or lineDDirty BackgroundBDefective image ofregular intervalEBlankCVertical white belt or lineF7.5.3 Image Problem Troubleshooting(1) Color is totally pale (Fig.7.2 A ) .............................................................................. 221(1-1)Color is pale .................................................................................................... 221(2) Background is dirty (Fig.7.2 B ) .............................................................................. 222(2-1)Background is dirty (partly) ............................................................................. 222(2-2)Background is dirty (totally) ............................................................................. 222(3) Blank Print (Fig.7.2 C ) ........................................................................................... 223(3-1)Blank on the whole page ................................................................................. 223(4) Vertical lines are printed ......................................................................................... 224(4-1)Thin vertical lines (with color) (See Fig.7.2 D ) ............................................... 224(4-2)Thin vertical lines (without color) (See Fig.7.2 F ) ........................................... 224(5) Cyclic Print Trouble (Refer to Fig.7.2 E ) ................................................................ 225(5-1)Vertical cyclic print trouble .............................................................................. 225(6) Color drift is wide. ................................................................................................... 226(6-1)"IN ADJUSTING COLOR REGISTRATION" is shown only a short time ........ 226(6-2)Although REG ADJUST TEST of the engine maintenance function is OK, ... 226(7) Solid Black Print ..................................................................................................... 227(7-1) Solid black on a full page ............................................................................... 227Note! Read a content of EEPROM chip on the old board and copy it to a new boardwhen exchanging a PU PCB.
