GRAPHTEC SignJet JS310-25ES Service Manual page 46

Removing the print head carriage cover and the print head protector
(11) Open the panel in front of the cleaning position.
(12) Remove the two screws holding the print head carriage cover, and then detach the print head carriage cover.
(13) Detach the print head protector.
Pull and then turn the knobs to detach the print head protector.
Pull and then turn
about 90 degrees.
JS310-UM-251-9370
6. Initial Ink Induction Procedure
Cleaning position cover:
Open the front panel by raising the top
half and lowering the bottom half.
Print head carriage cover
Remove the screws at the left and right
sides and then detach the cover.
Knobs
39
Print head protector
Pull and then turn
about 90 degrees.