I think you should track down the manual.
Jigs are great & for many yrs I was the shop jig man. But most TV shops
had cheap owners that would mouse things instead of fixing them
right. Should be easy to find the book, Telematics were common. Add the RCA
yoke cables & you can do most sets.
Jigs are for major problems. The pix is there but not so great.
Good enuf to fix most problems or rebuilding a chassis that cant be done right
on the road.
BTW For convergence some sets put the vert out cathode cap & resistor on
the conv panel ( Admiral, Maggy, & others ) The vert lin will pull up at
the bottom. Just hang in near values & skip the cable.
Zeno