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Front Panel Diagram Troubleshooting
12
Problem Items to check
Unit will not turn on
• Is unit plugged in?
• Are batteries charged?
• Are fuses blown?
Unit operates on AC but not on battery
• Check battery terminals
• Check 10A fuse
Sound is distorted
• If “Maximum Output” is lit, turn
down volume
• If using wireless mic, is red ‘Audio
Peak’ lit? If so, signal (such as
voice) is too strong. Move
microphone farther away from
source.
• Turn down input source (such as
keyboards, etc.) since the output of
some devices may be too high
• Check for debris on speaker cone
(sand, etc.)
Sound is muffled
• Bass too high
• Treble too low
Loud squealing sound coming from unit
• “Feedback” occurs when a
microphone is too close to the
speaker or gain is too high. Move
microphone farther away from
speakers and/or turn down channel
gain.
Power is on, but no sound
• check volume levels for each
channel and main volume
• if using wireless, be sure
receiver(s) and/or transmitter
battery is installed and/or is on
• If using “line insert”, loop must be
completed. See “special features”
section.
• Check speaker connection
• If “Maximum Output” is lit,
replace power amplifier board
Microphone signal is weak
• If mic has batteries, check batteries
in microphone
• Turn on phantom power if
applicable
• Check cables/connectors
• Is Mic/Line switch in proper
position?
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