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June 2005 © TOSHIBA TEC e-STUDIO281c/351c/451c TROUBLESHOOTING
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5
6)Toner offset
Fig.5-6
Toner offset (Shadow image appears approx. 173 mm behind the high density image.)
Cause/Section Step Check items Measures Remarks
Fuser unit 1 Is the pressure between the
fuser belt and pressure roller
proper?
Check the pressure removal
parts and pressure mechanism.
2 Is the thermostat in contact? Establish its contact.
3 Is there scratch on the fuser belt
or pressure roller surface?
Replace the fuser belt or the
pressure roller.
4 Has the fuser belt or pressure
roller reached its PM life?
Replace the fuser belt or the
pressure roller.
5 Is the fuser roller temperature
proper?
Check and correct the control cir-
cuit.
Paper 6 Is the paper type corresponding
to its mode?
Use the proper type of paper or
select the proper mode.
7 Using recommended paper? Use the recommended paper.
Developer mate-
rial
8 Is the specified developer used? Use the specified developer and
toner.
Scanner 9 Are the mirrors, original glass or
lens dirty?
Clean them.
Image quality
control
10 Is the control activated? Check the image quality control
related codes.
Density 11 Is the density too high? Perform the forced performing of
image quality closed-loop control
(05-395) and then automatic
gamma adjustment.
Printer density 12 Check the density of printer out-
put image.
Output the test patterns and
check them.
Color:
using 04-231 for each color
Black:
using 04-113
When defects
occur, perform
the correspond-
ing trouble-
shooting
procedures.
Feeding direction
Approx.
173 mm
Shadow image
Black solid