Citronic CSL-SERIES - Manual (Page 11)

CSP & CSL-series User Manual
Troubleshooting
No power “ON” LED on control panel
Ensure mains outlet voltage is correct for the unit
Use power lead supplied with the unit and check condition is OK
Check power is switched on at the rear panel
Check IEC fuse – if blowing fuses, refer to qualified service personnel
Power LED is on but no other LEDs and
no output
Check input signals and condition of connection leads
Check GAIN is not too low on channel input(s)
Check channel fader, GAIN and EQ controls are not turned fully down
Check MASTER faders are not fully down
When using condenser microphones, use an external phantom power unit
Check that PFL buttons are all switched out
Check that all Graphic EQ sliders are not fully down
Power light and VU LEDs lighting but no
main or speaker output
Check that Main L+R outputs are not muted
Check MASTER faders are not fully down
Check speakers are functional and leads are OK and connected properly
“PROT” indicator is lit and no output
(CSP only)
Protect mode – switch off power immediately
Disconnect speakers and switch power back on to the unit.
If unit powers up OK and PROT light is off, refer speakers to qualified
service personnel. If PROT is still lit, switch off power and refer CSP unit
and speakers for checking by qualified service personnel.
VU LEDs do not show MAIN output levels Check that PFL buttons are all switched out
Output is very loud or distorted
Check level of input signal is not too high
Reduce channel GAIN and EQ settings
Reduce channel and MAIN faders levels
Ensure Hi-Z line level input(s) not connected via XLR
Check AUX and EFFECT level controls and reduce if necessary
Output is working but at very low level
Check input audio source level is not too low
Ensure low impedance mic or line signal is not connected via jack
Increase channel GAIN control and EQ settings if turned down
Increase channel and MAIN faders levels
Feedback
(loud squealing or howling from mics)
Face microphone away from speakers and monitors
Reduce channel GAIN level and EQ level(s)
Reduce AUX and/or EFFECT levels
Reduce channel and/or MAIN fader levels