Brother HL-3450CN Service Manual page 89

CHAPTER 4 STRUCTURE OF SYSTEM COMPONENTS
Layout of Sensors
13. Cleaning roller sensor
15. Paper full sensor
5. Oil sensor
9. Belt sensor
8. Drum encoder sensor
6. OHP sensor
2. Paper feeding sensor
4. Paper empty sensor
14. Temperature sensor
(Thermistor to detect)
1. Paper size sensor
16. Toner key sensor
3. Paper exit sensor
7. Drum jam sensor
Fig. 4-32
4-36
10. Toner sensor
12. Home position sensor
11. Waste toner sensor