Focus Adjustment - Sony KV-29FS140 TRINITRON Service Manual

Convergence Rough Adjustment
Before performing this adjustment, perform Horizontal and Vertical Static
Convergence Adjustment.
Input cross hatch pattern.
a) TLH
Adjust the horizontal convergence of red and blue dots by inserting
TLH Correction Plate to the DY pocket (left or right).
b) YCH
Adjust YCH to balance Y axis.
c) TLV
Adjust the vertical convergence of red and blue dots.
d) XCV
Adjust XCV to balance X-axis.
R B R B
TLH YCH
ON DY :
(VR1)
TLV1 (no need to adjust)
(VR2)
YCH
(VR3)
TLV2
(XCV)
DY pocket
Screen Corner Convergence
Affi x a Piece A (110), Convergence Correct/Permaloy Assy Correction to
the misconverged areas.
b
a-d : screen-corner
c
KV-29FS140
B
R
R
B
TLV
DY pocket
TLH Plate
a
misconvergence
d
a1
XCV

2-3. FOCUS ADJUSTMENT

FOCUS adjustment should be completed before White Balance
adjustment. (See 3-4. WHITE BALANCE ADJUSTMENT)
1. Receive digital monoscope pattern.
2. Set Picture Mode to "STANDARD".
3. Adjust focus VR to obtain a just focus at the center of the screen.
4. Change the receiving signal to white pattern and blue back.
5. Confi rm magenta ring is not noticeable. In case magenta ring is
obvious, then adjust FOCUS VR to balance magenta ring and
FOCUS.
d1
a1~d1: Piece A(110), Convergence Correct
or
Permaloy Assy Correction
FLYBACK TRANSFORMER (T503)
KV-29FS140
b1
c1
15