HP 9020 Service Manual page 139

Assembly Access
4-39
6. Remove four #2 Pozidriv screws (two on each side of printer) that attach head load bar to
printer (Figure 4-38) and remove head load bar (Figure 4-39).
7. Place printer on its back.
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Figure 4-38. Releasing Head Load Bar
Figure 4-39. Removing Head Load Bar