Sony TRINITRON KV-A2121D Service Manual page 18

i
i
Affix a Permalloy ass'y
corresponding to the
misconverged areas
a-d : screen-corner
misconvergence
3-3. FOCUS
Adjust FOCUS so that the whole
screen is in best focus.
FOCUS VR
RV 701 SCREEN
Screen (G 2) Setting
1. Input dot signal from the pattern generator.
2. Set the picture BRIGHTNESS control to minimum
level.
3. Apply 170 V DC to the cathodes of R,G and B from
an external power power source.
4, While watching the picture, adjust the G 2 volume
(RV701) immediately before fly-back line disappears.
—4G=