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FC-210/310 PREVENTIVE MAINTENANCE 3- 16 February 2002 © TOSHIBA TEC
Lower heat roller
• Do not leave any oil (fingerprints, etc.) on the lower heat roller.
• Be careful not to allow any hard object to hit or rub against the lower heat roller, or it may be damaged,
possibly resulting in poor cleaning.
(2) Checking
• Check for stain and damage on the fuser belt and lower heat roller and clean if necessary.
• Clean the separation guide and fingers and check for chipped tips.
• Check the cleaning effect of the cleaning roller.
• Check the thermistors for proper contact with the upper and lower heat rollers.
• Check the fused and fixed condition of the toner.
• Check the gap between the inlet guide and lower heat roller.
• Check the fuser belt for proper transportation.
• Check the lower heat roller for proper rotation.
(3) Cleaning procedure for fuser belt and lower heat roller
When fuser belt and lower heat roller become dirty, they will cause jamming. If this happens, 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 lower heat roller surface with your nails or hard objects because it can be
easily damaged. Do not use silicone oil on the fuser belt and lower heat roller.
(4) 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 damaged.
A folded or damaged belt may be broken when it is in use.
3.6.7 Checking and replacing the oil roller and cleaning roller
(1) Handling precautions
Never allow solvents such as paint thinner to touch to the oil/cleaning rollers.
(2) Poor cleaning and corrective treatment
Judgment should be made depending on how much toner has been deposited on the fuser belt surface.
When its surface is stained with toner, examine the oil roller and cleaning roller. If toner is heavily adhered
on the oil/cleaning rollers, it means the cleaning performance is declined and the oil/cleaning rollers should
be replaced with new ones.
The oil/cleaning rollers are gradually degraded due to subjection to the heat from the fuser belt over a long
period of time. Replace them after the specified number of printouts have been made.