SYMPTOM
POSSIBLE CAUSE
POSSIBLE SOLUTION
NO LIGHTS
UNIT NOT PLUGGED IN
CONNECT POWER CORD TO AC OUTLET,
CHECK AC OUTLET
UNIT HAS FAILED
REFER TO SERVICE TECHNICIAN
POWER LED ON BUT
SHORTED SPEAKER CORD
REPLACE W/DIFFERENT CABLE
FAULT LED ALSO ON
SPEAKER IMPEDANCE TOO LOW
CHECK MANUAL FOR RECOMMENDED
SPEAKER LOADS
AMP HAS OVERHEATED
TURN AMP OFF, WAIT&TURN ON
CHECK SPEAKER IMPEDANCES
AMP HAS FAILED
REFER TO SERVICE TECHNICIAN
POWER LED ON BUT
TUNING MUTE ON
TURN TUNING MUTE OFF
NO SOUND
EFFECT IN LOOP TURNED OFF
TURN EFFECT ON
VOLUME, BOOST,MASTERS OFF
TURN CONTROLS UP
INSTRUMENT TURNED OFF
TURN INSTRUMENT VOLUME UP
BAD GUITAR CABLE
REPLACE CABLE
BAD BATTERY IN ACTIVE BASS
CHECK BATTERY
COMPONENT FAILURE
REFER TO SERVICE TECHNICIAN
HUM AND/OR NOISE
PICKUPS TOO CLOSE TO AMP OR
TRY MOVING,TURN OFF LIGHTS,
OR OTHER ELECTRICAL DEVICE
OR OTHER ELECTRONIC DEVICES
BAD GUITAR CABLE
REPLACE CABLE
COMPONENT FAILURE
REFER TO SERVICE TECHNICIAN
DISTORTION
INPUT STAGE CLIPPING
PRESS-10Db SWITCH, TURN
DOWN BASS
PREAMP CLIPPING
TURN DOWN VOLUME, ADJUST EQ
EFFECTS CLIPPING
TURN DOWN VOLUME, BOOST OR
LEVELS ON EFFECTS
POWER AMP CLIPPING
TURN DOWN VOLUME, BOOST OR MASTER VOLUME
BAD BATTER IN ACTIVE BASS
CHECK BATTERY
COMPONENT FAILURE
REFER TO SERVICE TECHNICIAN
LOUDNESS IS
EFFECTS NOT HOOKED UP
CHECK MANUAL FOR USING
BELOW NORMAL
CORRECTLY
EFFECTS
WRONG SPEAKON CABLE
USE NORMAL SPEAKON CABLE,
NOT BRIDGE MODE CABLE
HUM IN DIRECT OUT
GROUND LOOP
PRESS GROUND LIFT SWITCH
DISTORTION IN DIRECT
SIGNAL TOO "HOT"
TURN DOWN BAL.LEVEL CONTROL
TUNING MUTE
BAD CORD FOR RF2 FOOTSWITCH
REPLACE CORD
AND/OR BOOST2
RF2 DEFECTIVE
REFER TO SERVICE TECHNICIAN
NOT WORKING
COMPONENT FAILURE
REFER TO SERVICE TECHNICIAN
Troubleshooting
GALLIEN-KRUEGER • 2240 PARAGON DR. • SAN JOSE, CA 95131
US: (408) 441-7970 • FAX (408) 441-8085
EUROPE: 41.42.234520 • FAX: 41.42.239525
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