The output FET temperature of the QP1 Tank PCA exceeds the limit.
Check the QP1 Fader voltage, and the QP1 Tank PCA temperature.
The following causes are inferred.
The limit of the system parameter for the QP1 matching frequency is inappropriate.
Abnormal increase of the temperature inside the instrument. Check the environment temperature and ventilation duct flow.
QP1 Tank PCA is faulty.