Read Sony CPD-G420 (serv.man4) Service Manual online
— 15 —
CPD-G420
Plaster RTV to both sides for the upper wedge.
Make sure that they settle inside DY.
Plaster RTV to one side for other wedges.
14. Adjust the top and bottom pins correction VR.
15. Adjust the horizontal trapezoid distortion by DY horizontal
15. Adjust the horizontal trapezoid distortion by DY horizontal
trapezoid correction VR.
16. Check the landing at each corner. If the landing is not set to
speciÞ cation, adjust the landing of the 4 corners with the landing
magnet.
magnet.
17. Remove the sensor and wobbling coil.
18. Switch signals to R, G, B, and then check that the pure colors
18. Switch signals to R, G, B, and then check that the pure colors
have good color purity.
19. Fix purity magnets with white paint.
3-3. CONVERGENCE ROUGH ADJUSTMENT
1. Display the white crosshatch pattern.
2. Pile the convex parts of the 6-pole magnet for convergence
2. Pile the convex parts of the 6-pole magnet for convergence
together.
3. Roughly adjust H.CONV and V.CONV with the 4-pole magnet.
H.TRAP
TB-PIN
TLH
XCV
Purity
4-pole magnet
6-pole magnet
2-pole magnet
XBV
XCV
B
R
B
R
R
B
B
B
R
R
R
B
B
R
TLV
TLH
YBH
YCH
R
B
R
B
Convergence Specification
B
A
A
0.20 mm
B
0.24 mm
V
3-4. WHITE BALANCE ADJUSTMENT
SPECIFICATION
1. 9300
K
x = 0.283 ± 0.005
y = 0.298 ± 0.005
(All
White)
2. 6500
K
x = 0.313 ± 0.005
y = 0.329 ± 0.005
(All
White)
3. 5000
K
x = 0.346 ± 0.005
y = 0.359 ± 0.005
(All
White)
3-5. VERTICAL AND HORIZONTAL
POSITION AND SIZE SPECIFICATION
B
a
a 1.8 mm
b 1.8 mm
b 1.8 mm
a
b
b
A
MODE
A
B
4 : 3
352
264
5 : 4
330
264
3-6. FOCUS ADJUSTMENT
1. Adjust Focus (V) and Focus (H) for optimum focus.
Focus (V)
Focus (H)
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