That is for a Samsung SM, not RCA enmoco.
To get into the RCA Service Menu while set is running do this:
1. Press and hold menu and channel down button at the same time
on the TV, not the remote, it should immediately display the service screen menu.
2. Press channel down to highlight item 2 Service alignment, press menu on tv to activate the alignment screen.
3. Once the alignment screen is activated, press volume up button until value ( V: ) reads 90 then press Channel up and hours on should appear..
4. Set value to v80 for the built-in test patterns
5. Set value to v76 for service adjustments BUT, be very careful. I would not touch ANYTHING in this section as it could make your TV not work. If you still insist on changing things, then make sure you write any changes down before changing. I have never gone into this area but if it has a “Reset to Default” option DO NOT USE IT! Every TV I have heard of with this option sets it to a standard point BEFORE factory adjustments are made, NOT to get it back to the delivered to store settings. BE VERY AFRAID TO GO HERE AT ALL!!!!
Just hit the regular menu button to get out of the SM.
AGAIN, do not change anything in here unless you know what you are doing!!!!!!!!!!!!!
I have not seen any help on how to make changes to the service adjustments (and I have been looking a lot), so any screwup and there will not be anyplace to go but to a tech to fix it.