Analysis of maintenance: the left and right channels correctly, indicating fault in DC and surround in the independent circuit, this feature is the R325, R326, respectively, separated from the left and right channels, coupling, Q301 shoot with, C320 C321 coupled to a back-stage power amplifier. Rear-stage amplifier circuit is normal, between the fault follows the C321 R325, found Q301 c, e very penetrating damage. After replacing a 9014 commissioning, troubleshooting.MNqservice manual download site