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Removal and Installation
HP Designjet 4000/4020 Printer Series Service Manual
8. Press the two sides of the Carriage PCA
Cover and unclip from the Carriage
Assembly.
9. Disconnect the Trailing Cable and
Carriage Power Supply Cable from the
Carriage PCA.
10. Open the Carriage Cover and remove ALL
the Printheads from the Carriage Assembly.