Toshiba 1550 Service Handbook page 57

3.4 Checking Drum Cleaning Blade
(1) Precautions for Handling
Pay attention to the following points as the cleaning blade life is determined by its edge condition:
1. Do not allow a hard object to hit on or rub against the blade edge. Do not rub the edge with a
cloth.
2. Do not leave oil (or fingerprints, etc.) on the edge.
3. Do not put solvents such as thinner, etc. on the edge.
4. Do not deposit dirt such as paper fibers, etc. on the blade.
5. Do not place the blade near a heat source.
3.5 Checking and Cleaning Upper and Lower Heat Rollers
(1) Precautions for Handling
• Upper Heat Roller
1. Do not leave oil (fingerprints, etc.) on the heat roller.
2. Be extremely careful not to allow a hard object to hit on or rub against the roller because the thin
Teflon layer coated on the alminum substrate is easily damaged and, if damaged, will result in
poor drum cleaning.
• Lower Pressure Roller
1. Do not leave oil (fingerprints, etc.) on the roller surface.
(2) Checking
1. Check for staining and damage to the heat roller and clean or replace if necessary.
2. Clean the separation claws and check for chipped claws.
3. Check cleaning condition of cleaning felt.
4. Check the thermistor for proper contact with the heat roller.
5. Check the fused condition of the toner image.
6. Check the heat rollers for proper rotation.
(3) Cleaning Procedure for Heat Rollers
When the heat roller becomes dirty, it will cause paper jamming. In that case, wipe the roller sur-
face clean with cotton soaked in alcohol or heat-roller cleaner "RC60" which contains silicone oil.
For a better cleaning effect, clean the roller while it is still warm.
Note: Be careful not to rub against the Teflon-coated surface with your fingernails or hard objects
because it is easily damaged. Do not use silicone oil on the upper heat roller.
Oct. 1995 © TOSHIBA CORP. 3 - 3 1550 SUPPLIES