|
Some of the newer (SS) Sweep marker generators had provisions for the older IF frequencies. You either find newer gear that works or fix older gear. Alignment generally consisted of setting up sweep/marker injection somewhere around the tuner, and placing a demodulator probe connected to the scope vertical channel near the detector stage. The scope H channel would be connected to the sweep generator sweep rate signal. You would get a band-pass response curve on the scope. You would switch on markers of specific frequencies to adjust traps and to see if peaks, valleys etc were in the right places, and tweak slugs to move them and shape the curve to meet the spec...Each set's service literature should contain detailed instructions outlining the procedure and response curve desired.
I've never done TV alignment, but I know that video IF alignment is supposed to be a substantial chore....I've got some sets that need an alignment, and have been collecting gear in preparation, but I need to check the calibration of my gear, read up on the procedure, and find a set I don't care about to practice on before I seriously get into doing full alignments.
|