Fuser Unit - Samsung CLX-6250FX Service Manual

2.4.5 Fuser Unit

This unit consists of HEAT and PRESSURE ROLLER, Thermostats and a Thermistor, etc. The fuser unit
uses a combination of heat and pressure to fuse the toner on to the copy paper.
- Fusing Type : [Dual Lamp Heating, 700W/500W]
- Heat Roller : Teflon Type (Lamp Inside)
- Pressure Roller
- Thermistor – Temperature Detecting Sensor
contact thermistor 2EA
- Thermostat – Overheat Protection Device
1. Thermostat
When a heat roller is overheated, a Thermostat cuts off the main power to prevent over-heating.
- Non-Cotact type Thermostat
2. Heat roller
The heat roller transfers the heat generated from the lamp to fuse the toner on to the paper. The surface of a
heat roller is coated with Teflon, to help prevent toner from sticking to the surface.
3. Pressure roller
A pressure roller mounted under a heat roller is made of a silicon resin, and the surface is coated with Teflon.
When a paper passes between a heat roller and a pressure roller, a combination of heat and pressure fuses
the toner to the print media.
Trouble
Open Heat Error
Over Heat Error
(Fuser High Error)
Low Heat Error
(Fuser Low Error)
Service Manual
Product Specification and feature
Temperature Control concept
90℃ below for 20 sec after power on
- 240℃ over for 5sec
- 230℃ over for 5sec
- 10℃ over than Standby Ref.(170℃) Over for 3min.
10℃ below than target Temp. for 15 sec. At Warm up
20℃ below than target Temp. for 15 sec. At Printing
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