Adjust meters

Does anyone know how to adjust the power meters on a Pioneer QM800 amp.
The meters do work but one is showing lower power than the other

myboys260310-29-2016 9:50pm

erik_squires Details Discussions Posts This discussion Message User 16,056 posts 10-30-2016 at 04:40pm Copy Comment URL Report Comment Edit Delete If you are very lucky, there may be an adjustment trim pot near the meters to adjust.
theo Details Discussions Posts This discussion Message User 2,684 posts 10-30-2016 at 06:00pm Copy Comment URL Report Comment Edit Delete Have you checked that it is not the pre amp output by switching inputs left to right? If that is good then as mentioned a trim pot with a very small screw head would be at the base of the meter needle.