Tek 533 -150 test point

N7QL
 

Since I do not see this test point labeled can anyone tell me where it is? Do I need to adjust it by reading the +100 until it reaches +100? I see where the -150 adjust pot is at least. I did take some readings of the other supplies and got low to very low readings from them. I cleaned the chassis so there would be no dirt. I have my suspicions but I need to know that the -150 supply is right first. Thank you.

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