EAW RS121, User Manual

Page: 22 / 28

21
Basic Field Troubleshooting & Repair
Issue Potential Causes Potential Solutions
Power Won't Turn
On
Speaker is not connected to
a power source Connect speaker to power source using a properly-
rated power cable.
Speaker power cable is not
connected properly or
faulty.
Swap power cable with a known-good cable.
Replug cable into speaker power connector.
Power Shuts Off
Suddenly
Speaker fuse blown. Replace fuse.
No Sound
Speaker is not turned on. Turn on speaker.
Input cable is not connected
properly or faulty.
Swap cable with a known-good cable.
Replug cable into signal input connector.
No signal. Check signal source.
Input signal is too low.
Increase the gain at the signal source or using the
level knob.
If using a microphone as a source, be sure the
Mic/Line switch is set to Mic position.
Level knob is set too low.
Slowly increase the input gain by turning the level
knob clockwise.
Distorted Sound
Speaker limiting
Check limit light – if the limit light is blinking
frequently or statically lit, reduce volume levels
accordingly.
Input signal clipping
Make sure input signal source is not being
overdriven
Hum/Buzz Sound
Ground loops, A/C
grounding issues
Remove signal ground
Signal input cable is
unbalanced and too long.
Use a balanced cable or a shorter unbalanced cable