hifi engine

SX-850 dc offset & bias not in service manual?

Hello to all-just joined in. Have a Pioneer SX-850 receiver on the way and was glad to find the service manual for it here. However, the procedure for adjusting the amps dc bias and offset are not included in the service manual. I am unsure if the original manual even contains this info or if it was just missed when uploaded. If someone can let me know the procedure, would be appreciative. thanks!