Oki Data CONFIDENTIAL
45487001TH Rev.1
6-66 /
6. Troubleshooting procedure
6.5.3 Troubleshooting the abnormal images
A Overall faded-out
Blurred
B
Stain on white print
C
Entirely white
D
Black banding/
black streaking
in vertical direction
E
Cyclic abnormality
F
White banding/
white streaking
in vertical direction
Figure 6-2
Note! To replace a PU/CU board, data of the EEPROM chip on the old PU/CU board
must be read beforehand copied to the new board after replacement.
(1) Color has faded-out and blurred entirely. (Refer to Figure 6-2 A.) .................6-67
(1-1) Color are faded-out and blurred. ......................................................6-67
(2) Stain on white print. (Refer to Figure 6-2 B.) ..................................................6-68
(2-1) Stain on white print (Partial stain).....................................................6-68
(2-2) Stain on white print (overall stain) ....................................................6-68
(3) White print (Refer to Figure 6-2 C.) ................................................................ 6-69
(3-1) White print over entire page .............................................................6-69
(4) Black banding/black streaking in vertical direction ......................................... 6-70
(4-1) Thin vertical line (with color) (Refer to Figure 6-2 D.) ....................... 6-70
(4-2) Thin vertical line (without color) (Refer to Figure 6-2 F.) ..................6-70
(5) Periodic abnormalities (Refer to Figure 6-2 E.) .............................................. 6-70
(5-1) Periodic abnormality occurs in vertical direction ..............................6-70
(6) Solid black printing. ........................................................................................6-71
(6-1) Solid black printing over the whole page ..........................................6-71
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