Aiphone JV-1MD Operation Manual page 19

JV-DVF:
Loosen the special screws (×4) with the included hexagonal wrench [C], and remove the front panel [D].
4
Pull out the nameplate [E].
JV-DV:
JV-DVF:
5
Insert the filled-in nameplate.
6
Install the front panel in the opposite order of removal.
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