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## troubleshooting
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1. There is no beam.
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2. m3r_align doesn't work.
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- Check if main shutter and branch shutter are open.
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- Check if ID and mono energy setpoints are consistent.
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- Check beam on the exit slit camera from m3r_align panel.
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- If there is no beam and piezo voltage is very high (-12V or 40V), try tweak it back to zero.
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2. `m3r_align` doesn't work.
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3. ID gets stuck.
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