Steren AMP-021, Instruction Manual, Page: 21 / 28

INSTRUCTIONS
Charge the battery (with
voltage converter)
Before using the amplifier for the first
time, charge the battery for 12
continuous hours, subsequent 4 hours.
Insert the voltage converter into the
corresponding input of the amplifier and
connect it to the electric current. The
charging LED will turn red in the process;
Will change to blue when the charge is
complete.
Portable use
If using the amplifier in a portable
manner, make sure that the internal
battery is fully charged; If it does not have
enough charge, it will either go out or not
Use with 12 V battery
1. Turn off the amplifier before beginning
the procedure.
2. Connect the cables securely as shown in
the following diagram:
12V
LIGHTS
POWER
Turn on / off the amplifier and LED lights
Make sure all volume controls are at the lowest
level.
Press the power switch to turn it on or off, and press the
light switch to turn them on or off.
6
The battery has two indicators that are
displayed on the screen:
full batery
Low battery
(When the battery is about to run out, the LED
will blink)