HP laserjet 3390, 3392 all-in-one Service Manual

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4.
Slide the scanner/ADF assembly toward the front of the base unit, and then lift it up to remove it.
WARNING!
The scanner cover (which contains the ADF assembly) is not captive when
the scanner assembly is removed. The scanner cover can suddenly open and be damaged
when you are handling the scanner assembly. You must keep the scanner assembly level
to make sure that the scanner cover (ADF assembly) does not open.
CAUTION
Make sure that you carefully pass the scanner wire-harnesses through the
opening in the top cover. The connectors can be damaged if they become caught on the
top cover.
Figure 5-30
  Remove the scanner/ADF assembly (3 of 3)
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Chapter 5   Removal and replacement
ENWW