HP Designjet 3D Service Manual page 251

Figure 171: Material tube and retaining ring locations
Lift the
material tubes
out of the
rings
7. Remove the thermocouple wires from the wire retaining clip on the head
board. See Figure 172.
Figure 172: Retaining clip location
Remove the
thermocouple wires
from the retaining clip
8. Disconnect the umbilical cable by pressing in on the tab and pulling
upwards. See Figure 173.
Press down on
the retaining
rings
-235