2-9. Picture Distortion Adjustments; 2-9.1. Ntsc (Drc) Full Mode Adjustment - Sony KD-30XS955 Service Manual

2-9. PICTURE DISTORTION ADJUSTMENTS

2-9.1. NTSC (DRC) FULL MODE
ADJUSTMENT
1. Face the picture tube in an east-west direction. (For best condition.)
2. Input a monoscope and crosshatch signal.
3. Adjust the picture distortion with the two signals to balance the best
condition between the two.
Use the CXA2170-D1 and -D2 adjustable data items shown.
4. Complete V-PIN and V-CEN adjustments fi rst and adjust HPTZ to
straighten and parallel top and bottom lines.
5. Adjust VSCO, VLIN as necessary.
6. Adjust VSIZ and VPOS and write the data.
7. Adjust for Vertical line distortion.
8. Adjust VANG, VBOW, LANG, LBOW.
Note: Keep LANG and LBOW data between 5 and 58.
9. Finish with UCP, LCP, PPHA, PIN adjustments.
10. Check SLIN, MPIN. Adjust for correct HSIZ and HPOS and write the
data before changing modes.
NOTE: Make sure that the picture size is within specs. Vertical size
is 11.8 ± 0.1 sq. and horizontal size is 15.8 ± 0.1 sq.
.
CXA2170D-1
Item 0. VPOS (V-POSITION)
Item 1. VSIZ (V-SIZE)
Item 3. VLIN (V-LINEARITY)
Item 4. VSCO (V S-CORRECTION)
Item 9. HTPZ (H-TRAPEZOID)
KD-30XS955/34XBR960/34XS955/36XS955
CXA2170D-2
Item 1. HPOS (H-POSITION)
Item 2. HSIZ (H-SIZE)
Item 5. PIN (PIN AMP)
Item 7. UCP (UP COR PIN COR)
Item 8. LCP (LOW CO PIN COR)
Item 14. PPHA (PIN PHASE)
Item 15. VANG (AFC-ANGLE)
Item 16. LANG (L-ANGLE)
Item 17. VBOW (AFC-BOW)
Item 18. LBOW (L-BOW)
KD-30XS955/34XBR960/34XS955/36XS955
21