2-10
Chapter 2
DX-408/DX-408i Digital Key System Installation
How to Install the Battery
Check that the power is
on
before connecting a cable for the battery. When the
battery is connected with the power off, sparks may result.
1. Connect the red conductor of the battery connection cable to the positive (+) terminal of the
battery and then connect the black cable to the negative (-) terminal. If polarity is not
correctly set, the battery fuse (F2 fuse) in the power supply unit will ‘blow’.
The locations of the battery fuse (F2 fuse) and AC power fuse (F1 fuse) on the
DX-408 and DX-408i digital key systems are as follows.
2. Turn on the AC power switch of the DX-408/DX-408i digital key system.
Red line
Black line
AC power fuse (F1 fuse)
Battery fuse (F2 fuse)
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