Sony BDV-N790W in Service Mode - how? TV Monitor?!

Hi,

I got the Service Manual for Sony BDV-N790W and I'm trying to follow the steps to access the Service Menu, as shown on page 33 and copied below.
However I cannot access it.

Any tips?
What's the "TV monitor" mentioned?

Note: The operation in this mode must use a remote commander and TV
monitor.
Setting method of the BD service mode:
1. Connect this unit with TV monitor.
2. Press the [turn-on] button to turn the power on.
3. Press button in order of the [DISPLAY] -> [0] -> [2] -> [1] ->
[SUBTITLE] on the remote commander. (Make the interval
when each button is pressed within two seconds)
4. Enter the BD service mode. The OSD menu on TV monitor
can be operated by remote commander.


Thanks,
Fabio