hifi engine

Service manuals for HK "three thirty" and Sansui model "3300"

Hi, I am looking for service manuals for two receivers. Harman Kardon model "three thirty" SN-17632 and model on this one is spelled out not(330). The second is a Sansui model "3300" SN-223110620 not (33000).

Thanks for your time and consideration,

Mark K.