March 2005 © TOSHIBA TEC e-STUDIO520/600/720/850 TROUBLESHOOTING
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22)Blotched image
Fig.5-22
Defective area Step Check items Prescription
Paper 1 Is the paper type corresponding to its
mode?
Check the paper type and mode.
2 Is the paper too dry? Change the paper.
Transfer belt unit 3 Is the surface of the transfer belt sup-
ply roller dirty with toner?
Clean it with alcohol.
4 Does the transfer belt exceed its nor-
mal life span?
Replace the transfer belt.
High-voltage transformer
(Transfer charger)
5 Is the output from the high-voltage
transformer normal?
Adjust the output. Replace the trans-
former if necessary.
Feeding direction
05/04
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