Always consult the official Owners Manuals first!

Troubleshooting tips

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The three most important troubleshooting tips

XLR.jpg

  1. Check your cables.
  2. Check your cables.
  3. Check your cables.

Solving boot issues

Solving FASLINK issues

When the processor shuts down or starts blinking all lights, there may be a short in the XLR cable or in the FC. Replacing the cable.

Things to check when there's no sound

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If the unit or a preset doesn't produce any sound, check the following:

  • CHECK YOUR CABLES!
  • Device has the latest firmware installed?
  • Input is connected to Output on the grid through blocks or shunts?
  • Bypass Mode in bypassed blocks is not set to “Mute”?
  • The physical output corresponds with the Output block on the grid?
  • Blocks are set to the correct X/Y state or channel?
  • The Cab block is not set to an empty user cab slot?
  • Volume block with an attached controller is not set to zero volume?
  • Output level knobs on hardware are turned up?
  • FX8 has the correct "pre/post" preset config?
  • Noise Gate (in Input block or separate block) doesn't have its Threshold set too high?
  • Scene output level in Output block is turned up?
  • Digital audio: USB Level or AES / SPDIF is turned up in I/O?
  • Front input is set to correct setting (front / rear)?

Handy meters on the Axe-Fx III and FM3

The Axe-Fx III, FM9, and FM3 make it easy to see if (and where) the signal flow is interrupted:

  1. Go to Layout > Meters to see meters for all blocks in the preset.
  2. Check the Input and Output meters on the front/top panel to verify that there’s an input and output signal.
  3. Check the blocks to detect any issues.

Set AC Line Frequency to the correct setting for your country

If you are using the Axe-Fx III, FM9, or FM3 in a region where AC power frequency is 50Hz instead of 60Hz, change the AC Line Frequency setting in SETUP: Global Settings: Config.

Test tone

If you want to make sure that the hardware is capable of generating sound, create a simple test tone:

  1. Add a Synth block and connect it to the grid output.
  2. Select the Sine wave and turn off Tracking.

Harsh sound

If the sound is harsh, without low end, check that the preset hasn't got an engaged Wah block.