KV-21FS150 (serv.man3) - Sony TV Service Manual (repair manual). Page 14

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KV-21FS150
KV-21FS150 
14
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 YCh to balance Y axis.
 d) 
 
XCV
 
Adjust XCV to balance X-axis.
TLV
R B
YCH
R
B
XCV
B
R
TLH
B
R
YCH
DY pocket
DY pocket
XCV
TLV
XCV
TLV
TLH Plate
ON DY:
Screen Corner Convergence
Affi x a Piece A (90), Convergence Correct/Permaloy Assy Correction to 
the misconverged areas. 
b
a
c
d
a-d : screen-corner
        misconvergence
a1
b1
c1
d1
a1~d1:Piece A (90), Convergence Correct
or
Permaloy Assy Correction
2-3. FOCUS
FOCUS adjustment should be completed before White Balance 
adjustment. (See 4-4. White Balance Adjustment)
1.  Receive digital monoscope pattern.
2.  Set Picture Mode to “DYNAMIC”.
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.
SCREEN
FOCUS
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