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XLS Series Power Amplifi ers
Operation Manual
page 12
CONDITION: Normal operation.
POSSIBLE REASON:
•  This is normal operation for your amp.
CONDITION: No power to the 
amplifi er.
POSSIBLE REASON: 
•  The amplifi er’s “power” switch is off.
•  The amplifi er is not plugged into the 
power receptacle.
•  The amplifi er’s high-voltage power 
supply fuse has blown. Refer to the 
Advanced Features and Options section 
of this manual for instruction on fuse 
replacement.
CONDITION: Distorted sound.
POSSIBLE REASON: 
•  Input signal level is too high. Enable 
“anti-clip” Limiter switch. If Clip indi-
cators continue to illuminate frequently, 
turn down your amplifi er level controls. 
NOTE: Your amplifi er should never be 
operated at a level which causes the Clip 
LEDs to illuminate constantly.
6 Troubleshooting
KEY
CONDITION: No sound.
POSSIBLE REASON: 
•  The amplifi er has just been turned on and 
is still in the 4-second turn-on delay.
•  The amplifi er is in “fault” mode. A Fault 
status can be triggered when one of the 
amplifi er’s protection circuits is activated. 
First disconnect your speakers from the 
affected channel(s) one by one  to deter-
mine if one of the loads is shorted. If the 
indicators return to normal status, then 
try a different speaker or cable to deter-
mine where the short is occurring. If no 
short can be found, turn off the amp and 
allow the amp to cool. If indicators do not 
return to normal after restarting your amp, 
check the fuse and replace if necessary, 
or return amp to Crown or an authorized 
Crown Service Center for servicing.
•  No input signal.
•  Input signal level is very low.
•  Level controls are turned down.
• Speakers 
not 
connected.