e-STUDIO520/600/720/850 TROUBLESHOOTING March 2005 © TOSHIBA TEC
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5.2 Troubleshooting for the Image
If any abnormal image occurs in the test copying, perform trouble shooting for the image.
1) Abnormality of image density / Gray balance
Fig.5-1
Defective area Step Check items Prescription
Density/Gray balance 1 Check the density/gray balance. Adjust the density.
Printer section 2 Check test print image (04-113). Go to step 4 if there is any problem
on image.
Scanner 3 Are the original glass, mirrors and
lens dirty?
Clean them.
Printed image 4 Is the image faded? Perform troubleshooting for faded
image.
5 Is background fogging occurring? Perform troubleshooting for back-
ground fogging.
6 Is there a blotch on the image? Perform troubleshooting for blotched
image.
7 Is the image transferred normally? Perform troubleshooting for abnor-
mal transfer.
Feeding direction
Image density Gray balance
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