Toshiba e-STUDIO556 Service Manual page 238

8.4 Troubleshooting for the Image
If any abnormal image occurs in the test copying, perform trouble shooting for the image.
8.4.1 Abnormality of image density / Gray balance
Defective area
Density/Gray balance
Printer section
Scanner
Printed image
© 2011 - 2014 TOSHIBA TEC CORPORATION All rights reserved
Image density
Fig. 8-1
Step Check items
1 Check the density/gray balance.
2 Check test print image (04-114).
3 Are the original glass, mirrors and
lens dirty?
4 Is the image faded?
5 Is background fogging occurring?
6 Is there a blotch on the image?
7 Is the image transferred normally?
8 - 237
Gray balance
Prescription
Adjust the density.
Go to step 4 if there is any problem
on image.
Clean them.
Perform troubleshooting for faded
image.
Perform troubleshooting for
background fogging.
Perform troubleshooting for blotched
image.
Perform troubleshooting for
abnormal transfer.
e-STUDIO556/656/756/856/557/657/757/857
ERROR CODE AND TROUBLESHOOTING
8