Samsung SCX4521F Service Manual - Page 25
Pressure roller, 1.4.5 Safety Features, Fuser power is cut off when the front cover is opened - user manual
UPC - 635753616040
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System Overview 3.1.4.4 Pressure roller The Pressure Roller mounted under the heat roller, it is made of a silicon resin, and the surface of the roller is coated with Teflon. This ensures that toner does not adhere to the roller surface. 3.1.4.5 Safety Features • To prevent overheating - 1st protection device: Hardware cuts off when overheated - 2nd protection device: Software cuts off when overheated - 3rd protection device: Thermostat cuts off mains power to the lamp. • Safety device - Fuser power is cut off when the front cover is opened - LSU power is cut off when the front cover is opened - The temperature of the fuser cover's surface is maintained at less than 80°C to protect the user and a caution label is attached where the customer can see it easily when the rear cover is opened. Samsung Electronics Service Manual 3-3