Toshiba e-STUDIO2820C Service Handbook page 256

Items to check
M11 Entry guide
M12 Fuser unit gear
M13 Pressure roller cleaning pad
* M1: Pressure roller, M4: Fuser belt
• Handling precautions
Pressure roller
- Do not leave any oil (fingerprints, etc.) on the pressure roller.
- Be careful not to allow any hard object to hit or rub against the pressure roller, or it may be
damaged, possibly resulting in poor cleaning.
Fuser belt
- Do not touch the fuser belt surface with bare hands.
- Prevent oil or other foreign matter from staining the fuser belt surface.
- Do not allow alcohol or any other organic solvent to contact with the fuser belt.
- Do not apply external pressure that might scratch the fuser belt.
• Checking
- Check for stain and damage on the fuser belt and pressure roller, and clean if necessary.
- Check the separation plate and fingers and check for chipped tips.
- Check the thermistors' contact and non-contact status.
- Check the fused and fixed condition of the toner.
- Check the gap between the inlet guide and pressure roller.
- Check the fuser belt for proper transportation.
- Check the pressure roller for proper rotation.
• Cleaning procedure
When the fuser belt and pressure roller become dirty, they will cause jamming. If this hap-
pens, wipe the surface clean with a suitable cloth. For easier cleaning, clean the belt and
roller while they are still warm.
Note:
Be careful not to rub the fuser belt and pressure roller surface with your nails or hard objects
because it can be easily damaged. Do not use silicone oil on the fuser belt and pressure roller.
• Checking after the assembly of the fuser belt unit
After the assembly, rotate the fuser belt for a round to confirm that the belt is neither folded
nor scratched.
A folded or scratched belt may be broken when it is in use.
* M2: Pressure roller separation finger
The paper jam may be caused if the tip of the finger is damaged or deformed. If there is any
problem with it, replace the finger with a new one regardless of the number of output pages
which have been made. Do not damage the tip of the finger during the cleaning. The finger may
be damaged if the toner adhering to the tip of it is scraped off forcibly. Replace the finger if the
toner is sticking to it heavily.
* M3: Pressure roller thermistor
Clean the thermistor with alcohol if the toner or dirt is sticking to it when the pressure roller is
replaced. Do not deform or damage the thermistor during the cleaning. Replace the thermistor
with a new one if it is damaged or deformed regardless of degree.
e-STUDIO2820C/2830C/3520C/3530C/4520C
PREVENTIVE MAINTENANCE (PM)
Lubri-
cation/
Cleaning
(x 1,000
Coat-
sheets)
ing
A
W2
A
5 - 26
Replacement
(x 1,000 drive
counts)
R R
R R
© 2008 TOSHIBA TEC CORPORATION All rights reserved
Opera- Parts
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check <P-I>
44-27
44-28
44-30
44-37