t r o u b l e s h o o t i n g
31
Non-Operation
If the unit does not appear to be operating correctly, perform these simple checks
before assuming that it needs repair.
None of the LEDs light
Check the mains supply:
1. Is the module connected to the mains supply?
2. Is the socket switched off?
3. Is the voltage select switch on the back of the unit in the correct position?
4. If the supply is okay and the module turned on but no LEDs light, then a fuse has
probably blown. See the section on changing a fuse.
LEDs light, but there is no audio out
Check that the unit is set as you expect:
1. Are you connected to the correct input on the back?
2. If using the Mic input, is the Mic rotary control clicked into the LINE position?
3. If using the Line or Inst input, is the Mic rotary control not clicked into the
LINE position?
4. If using a microphone, does it require phantom power (+48)?
5. Is the Output Fader fully down?
6. Is the Filters button lit? If so, are the filters set correctly? (If the frequency of the
Low filter is set above the frequency of the High filter, no audio is allowed through.)
7. If using the gate, is the threshold set too high, causing the gate to be
permanently closed?
8. If the Key switch is illuminated, are the filters set correctly (as above)?
9. Is the Ext Key light illuminated? If so, is there a signal connected to the Ext socket?
(If no signal is connected, the gate remains permanently shut.)
LEDs light, but the compressor does not appear to work
Check that the unit is set as you expect:
1. Is the To S/C button lit? If so, are the filters set correctly? (If the frequency of the
Low filter is set above the frequency of the High filter, no audio is allowed through
to the compressor side chain.)
