HP Designjet T1120 Printer series - Manual (Page 129)

6. Push the handle back to raise the lid.
7. This gives you access to the printheads.
8. To remove a printhead, lift up the blue handle.
9. Using the blue handle, use steady force to disengage the printhead.
120 Chapter 11 Handling ink cartridges and printheads ENWW
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