Help with bias adjust on Luxman LV 109

[Sam Gray]

Hi,

I'm trying to set the idling current on a Luxman LV109 but I am confused.

The instructions say:

3. Adjust VR7602A so that voltage between TP1 and TP2 reaches 45mv​

4. After connecting TP3 and TP4, adjust VR7601A so that voltage between TP1 and TP2 reaches 15mv.​

I've done step 3, but I don't understand step 4.

Does it want me to short TP3/TP4 together? Right now VR7601A has no effect on the voltage between TP1/TP2 or TP3/TP4.

Anyone does this adjustment before?

I've attached a few relevant pages of the service manual. The full one is here:
https://www.hifiengine.com/manual_library/luxman/lv-109.shtml

they are all low res though.

 

[Sam Gray]

Ok. So I took the leap and shorted TP3/4 together. That is indeed what they meant.