HP 8000dn Service Manual - Page 140
Image Fusing, Controller PCA via thermistor TH1. The DC Controller maintains
UPC - 088698569634
View all HP 8000dn manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 140 highlights
Image Fusing The Fusing Assembly bonds the toner particles into the media with a heated fusing roller and a soft pressure roller. There are two levers on the Fusing Assembly that adjust roller pressure for single sheets (down position) or envelopes (up position). Both levers must be set to the same position. The fusing roller contains two quartz-halogen lamps that provide heat for the fusing process. Fusing temperature is monitored by the DC Controller PCA via thermistor TH1. The DC Controller maintains a temperature of about 190° C during print mode. If the fusing system overheats (about 230° C), TH1 opens, interrupting power to the fusing heater, causing a . If the fusing system exceeds 240° C, the thermal fuse opens, moving power away from the fuser. Figure 5-13 Image Fusing 116 Chapter 5 Functional Overview EN