Toshiba e-STUDIO556 Service Manual page 790

8.4.2 Background fogging
Defective area
Adjustment
Density reproduction
Printer section
Parameter adjustment
value
Scanner
Developer material/Toner/
Photoconductive drum
e-STUDIO556/656/756/856/557/657/757/857
ERROR CODE AND TROUBLESHOOTING
Fig. 8-2
Step Check items
1 Perform the shading correction.
2 Check the reproduction of the image
density.
3 Check test print image (04-114).
4 Check the image processing
parameter.
5 Are the original glass (especially
shading position), mirrors and lens
dirty?
6 Using the specified developer
material, toner and photoconductive
drum?
7 Have the developer material and the
photoconductive drum reached their
PM life?
8 Is the storage environment of the
toner cartridge 35°C or less without
dew?
8 - 238
Prescription
Perform 05-3218. If an error occurs,
retry it. If the error still persists, clean
the original glass.
Adjust the density.
Go to step 5 if there is any problem
on image.
Check the range correction setting
and the adjustment value of the
background peak for range
correction. (Ch.6.4.4, Ch.6.4.5)
If they need to be adjusted, check the
print image in the above circle mark
to adjust the adjustment value of the
background peak for range
correction.
Clean them.
Use the specified developer material,
toner and photoconductive drum.
Replace the developer material and
photoconductive drum.
Use the toner cartridge stored in the
environment within specification.
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