Input Panel Diagram 4A
1
.
FUSE
5x20mm, T5A/250V glass fuse
2
.
XLR 1/4” Input
Microphone and instrument input
3
.
1/4” Input
Instrument input
4
.
1/8” AUX Input
Used to connect to any device with an AUX port
5
.
17V Power Input
Note: Only charge the KoolMAX with 100-240V AC/17V DC power adapter
6
.
USB Charging Output
5.2A output charges devices like cell phones, laptops, and tablets
7
.
Cigarette Lighter Plug (12V output)
12V output powers devices like fans, lights, and air pumps
8
.
Power Switch
12
Issues
Unit not powering On
No sound
No sound while using
USB or SD card
Incorrectly reading
USB or SD card
Audio Distortion
Poor tuner reception
Unit is freezing
Possible Causes
Battery is low on power
Fuse is burnt out
It is muted or the
volume is at zero
Are Input Devise is
improperly connected
Incorrect file format
Error or not
recognizing the
media
Volume level too high
EQ might not be on
the appropriate setting
for the music type
KoolMAX might not
be positioned
toward radio signal
Weak signal
Not responsive
Solutions
Plug in unit to wall outlet, let
unit charge for 24 hours
Use a replacement fuse with
the appropriate size and rating
Adjust the volume to your
required level
Check the devise input and
make sure plugs are properly
connected
Check if media files are
MP3 file format
Remove and re-insert,
check if media files are
MP3 file format
Lower the volume to a
comfortable level
Change EQ setting to the
appropriate music type
Move the unit to a new position.
Change to another station
Turn off the unit, and power
it on again
Battery is low try changing unit
for 24 hours
Troubleshooting Guide
