Do you have a question about the Sony TRINITRON KD-27FS170 and is the answer not in the manual?
Procedure for adjusting beam landing.
Adjusting vertical and horizontal static convergence.
Adjusting the focus control for best pictures.
Adjusting the SCREEN (G2) VR for faint background.
HV hold-down confirmation and readjustment.
Confirming and adjusting B+ voltage.