HP 1055CMHP - Manual (Page 253)

Removal and Installation
8-45 HP DesignJets 1050C and 1055CM Printers Service Manual
NOTE For steps 3 and 4, refer to Figure 42.
3. Loosen the retaining screw T-9 at the back of the printhead tube
connector.
4. Remove the printhead tube connector (refer to Figure 42).
Figure 42: Carriage Assembly and Belt
5. Move the Printhead tube connector to a safe position.
a.
Push in here
b.
Pull here
c.
Loosen this screw
View from the rear
Printhead tube connector
a.
Push in here