Figure 2-27 Tray 4 Paper Size Switches - HP LASERJET ENTERPRISE M725dn Troubleshooting Manual

Tray 4 paper size switches (SW2, SW3)
1.
Remove Tray 4, and then push the switches at the back of the tray cavity.
Figure 2-27
2. Check the control-panel display for sensor response.
3.
If there is no response, replace the lifter drive assembly.
ENWW
Tray 4 paper size switches
Tools for troubleshooting
165