AVL-50 4G User Manual
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TTW-AVL504G-UM002
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Install the SIM card into the holder when power is off as shown blow. Take care to align the cut mark,
and then close the case.
Figure 12.
SIM Card Installation
To use the AVL50 4G backup battery, the switch must be at the ON position. The switch and the
ON/OFF position are shown as below.
Figure 13.
Switch ON/OFF Position
Note:
1. The switch must be at the “OFF” position when the AVL50 4G is being shipped on an aircraft.
2. When the switch is at the “OFF” position, the battery cannot be charged or discharged and cannot
be turned on.
3.5.
Install a SIM Card
3.6.
Switch on the Backup Battery
