Crown XS700 Bias question - (schematics posted)

[Grandpa334]

Hi guys! I just repaired the channel 2 output stage on this Crown XS700 power amp. I had found a few small components shorted and they were tripping the protection circuit. It was nice that the protection circuitry worked and prevented a costly repair. It is working fine now. My scope is not working (next project is to fix it) so I need to set the bias using the voltage readings. The schematics I have show the bias test points but give no indication of what the readings should be. The channel that I did not mess with has 2.8mV across TP1 and TP2. The side that I repaired reads 4.6mV across TP3 & TP4. I did not touch the bias pots during the repair. I'm not really sure that the 2.8mV is correct. Anyone have knowledge of what the setting should be?

Thanks!