Toshiba e-STUDIO 2555C Service Manual page 744

Step Check Item
Transfer belt and the
photoconductive drum
18
Developer material
19
Is the image printed normally
without yellow, magenta, cyan or
20
black streaks in the secondary
scanning direction?
Check if the main charger wire
corresponding to the color of the
21
streaks is stained.
Is the image printed normally
without white streaks in the
22
secondary scanning direction?
Check if the LED head is stained.
23
Is a certain color in the printed
24
image turned to black solid?
25
If the density level is low on both
front and rear sides, is the image
26
printed normally in cases other
than noted above?
e-STUDIO2555C/3055C/3555C/4555C/5055C
ERROR CODE AND TROUBLESHOOTING
Result Measure
Check the contacting status of the
transfer belt and the photoconductive
drum.
Check the amount of the developer
material. (Check if the developer
material is supplied on the developer
sleeve.)
Yes
No
Yes
No
Yes
No
• Abnormality in the main high-
voltage transformer corresponding
to the color or abnormality in the
LED head.
• Switch one of 4 main high-voltage
transformers which possibly
contains abnormality with the one
possibly normal. Then print the
same test pattern.
• If the color which turned into black
solid changes along with the
replacement of the main high-
voltage transformer, this main high-
voltage transformer is defined as
abnormal.
• If the color which turned into black
solid does not change, check if the
harness between the LGC board
and the main high-voltage
transformer is broken or if the
power is sufficiently supplied to the
main charger (breaking of the high-
voltage harness or connection
defect). If no problem is found,
check the LED head.
Yes
No
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