Technics SU-Z65 repair help

[ebaketa]

Hello there, i'm repairing Technics SU-Z65 amplifier and I need help, I have checked all output transistors, they are all correct, I think the issue in the integrated circuit of the Panasonic AN7060, for which I have very little information, I found the data sheet but unfortunately in the Japanese language, so I do not understand.
I tried to connect it as an operational amplifier with a negative feedback and at the output I did not get anything.
Please if anyone has the experience and the will to help me test this integrated circuit?

Thank you in advance!

PINOUT:

1 - Input
2 - N.F.B. (feedback)
3 - NC
4 - GND
5 - (-VCC)(-6V)
6 - Output
7 - T-P ( idon't know what is thip)
8 - (+VCC)(+60V)
9 - (+VCC)