Figure 2-23 Tray 3 Paper Size Switches - HP LASERJET ENTERPRISE M725dn Troubleshooting Manual

Tray 3 paper size switches (SW5, SW7)
1.
Remove Tray 2 and Tray 3, and then push the switches at the back of the tray cavity.
Figure 2-23
2. Check the control-panel display for sensor response.
3.
If there is no response, replace the lifter drive assembly.
ENWW
Tray 3 paper size switches
Tools for troubleshooting
161