Sorry I couldn't be more specific at the time, all I had to go on was the schematics that are in the data base, eyes - on beats it every time.
First question, you are correct, no changes to bias setting procedure.
RE: setting bias, it is the resting state of the amp, so NO signal, shorted inputs are something the factory says usually for pre-out power in jumpers, and they actually spec 5k resistors... no don't bother shorting, just turn it to aux (no am, no fm, no phono (phono may add a bit of noise))
With an output capacitor coupled amp, and no signal, there is NO way a speaker load can influence the bias setting. So it doesn't matter, but I would go with no speaker load.
RE: the 45 volts... over the years things drift... and instead of using 39 volts blindly, you need to measure the collector voltage of the "top" transistor (Q1 for the left and Q2 for the right) on the output driver and set the collector voltage of the "bottom" transistor (Q3 for the left and Q4 for the right) to be half of the top transistor's voltage. That is because your amplified signal swings between the "top" voltage and ground, and if that voltage isn't half then one side of the signal will be clipped sooner, resulting in less output power before distortion. In extreme cases, even very low volumes can be affected.
Slightly revised translation: VR801 and VR802 are on the board marked W15-091 and should be adjusted until pin 9 on W15-091 reads one half of the voltage on pin 6 on W15-091. It just worried me that the manual shows two pin 9's and pin 9 CANNOT be shared between the channels.
As for measuring the 0.7 ohm resistors, due to many factors, in the case of bias measurements, you should measure the voltages directly at the leads of the resistor with your probes.
And I have ABSOLUTELY no idea where they actually put the resistors. You have eyes-on here...
The two 0.7 ohm resistors per channel are connected to the emitters of the transistors, the 0.7 ohm resistor after the capacitor on the output will show NO voltage across it, literally down to the millivolt level, so measure across the three 0.7 ohm resistors per channel and ignore the 0.000 volt one. Just pick one of the other two, as the same current flows through both of them.
I guess I just didn't notice that they picked (of all things) a 0.7 ohm value for the resistor in series with the output after the capacitor.