Hitachi VM-H71A - Manual (Page 16)

Before You Begin
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cover. Pull the cover forward to open it.
2. To close the battery compartment cover, press both sections marked
"PUSH" simultaneously and make sure that a click is heard. Also check
that the BATT EJECT lever is aligned with the mark as shown in the figure
below.
How to Open and Close the Jack Cover
1. To open, turn the knob on the jack cover in the direction of the arrow.
2. Align the post on the cover with the hole in the case.
NOTE: The plug can easily be inserted and pulled out when the post on the
cover is inserted into the hole.
NOTE: Release the post from the hole to close the jack cover.
3. To close the jack cover, Press the two sections marked "PUSH" and
make sure that a click is heard. Also check that the knob is aligned with
the mark as shown in the figure below.