2-28 Phaser 4500 Service Manual
Power Shutoff to the Fuser
The printer shuts off power to the Fuser for the following reasons:
1. Fuser abnormality (U4)
2. Paper jam
3. Cover Open — Top, Rear, Duplex Unit, Stacker
4. Laser Assembly (ROS) abnormality (U2)
5. CPU or NVRAM abnormality (U6)
6. Main Motor Assembly abnormality (U1)
7. Fan abnormality (U5)
8. Fuser Pause command issued
9. Xerographics failure
10. Duplex Unit failure
11. Stacker failure
12. Option Tray Unit failure