Service manual

1.5.8 Print Head Unit (Optical Unit)
The Print Head unit consists of the laser diode (semi-conductor laser), the polygon motor which
drives the polygon mirror for laser scanning, mirrors, and the lenses. The optical unit emits the
laser beam onto the surface of the PC drum via the polygon mirror, mirrors, and lenses to produce
a latent electrostatic image.
1.5.9 Fusing Unit
The fusing unit, which consists of the roller and heater lamp, fixes toner images onto the paper,
using heat and pressure. The thermistor is installed in the unit for heat control and the thermostat
takes over the job when the heat control fails. .
Figure 1-18. Print Head Unit
Figure 1-19. Fusing Unit
Product Description EPL-N2000 Service Manual
1-58 Rev. A