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ADJUSTMENT OF RGB LEVELS ON TELETEXT P.C.B
Adjustment must be carried out before "white adjustment".
1) Adjust P4T and P3T on R and G so that characters reach the 100 V DC
level.
2) Adjust P2T on B so that the character reaches the 110 V DC level.
After white adjustment visually inspect that white characters have
correct tint, otherwise, retouch one or two of the potentiometers P2T,
characters having correct white.
Line blanking
Fig. 2
V DC
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