HP Designjet 3D Service Manual page 83

Figure 48: Head cover tab locations
Head cover
9. Remove tips
A. Use 7/64 T-Handle Allen wrench to loosen the heater block
screws three to four full turns counterclockwise - or until the
top of the screws are flush with the metal cover. DO NOT
remove the screws entirely. See
Loosen but do not
remove heater block
screws
B. Use needle nose pliers to grasp the stainless steel shield of
the tip.
C. Pull the tip shield toward you, then pull down to remove the
tip from the heater block. Discard the used tip. See
50.
Figure 49.
Figure 49: Tip Removal
Press tabs in to
remove head
cover
Loosen but do not
remove heater block
screws
Figure
-67