5
b) At least 15 minutes later, receive square test pattern signal
c) Adjust brightness and contrast to get the best picture
d) Adjust the angle of two tetrode magnetic rings to let the red vertical line coincide with the blue
vertical line at middle of screen
e) Keep the angle unchanged, move the two tetrode magnetic rings at the same time to let the red and
blue horizontal lines coincide at middle of screen
f) Adjust two hexode magnetic rings to let the green line coincide with the mixed line of red and blue.
Adjust the angle between them will affect the vertical line, move them together will affect the
horizontal line.
g) Repeat d), e), f) and observe the movement of red, green and blue.
4.14.2 Ambient convergence correction
a) Turn on your TV
b) At least 15 minutes later, loosen the screws of the deflection yoke
c) Fixate the rubber wedge temporarily under the deflection yoke
d) Move the deflection yoke upward or downward to get best convergence, push the rubber wedge into
space between picture tube and deflection yoke to fixate the deflection yoke temporarily
e) Place the rubber wedge whose overlay paper has been removed at the bottom space
f) Move the deflection yoke left and right to get best convergence
g) Keep the condition unchanged, place another rubber wedge whose overlay paper has been
removed also at the upper space at the same time
h) Remove the interim rubber wedge, adhere it to picture tube and deflection yoke
i) After placing three rubber wedges, check all the convergence again
j) Stick three transparent viscous belts to the rubber wedge
Chart 1
I
2
C TDA (NOM)8377-B-6NA
E
2
PROM pre-set data
I
2
C standard UOC for export bus control adjustment item default setting
MI Items Variable
Preset
M0 SUBCON
56(sub-contrast)
SUBCOL
56(sub-chroma)
SUBSHP
48(sub-acutance)
SUBTINT
31(sub-hue)
M1
V.SLOPE
34(field center adjustment)
V.SHIFT
27(field point adjustment)
V.SIZE
36(field amplitude adjustment)
V.SC
32(field line )
HSHIFT
32(line point adjustment)
PROGRAMA.NO 2(channel)
M2 AGCTAKEOVER
24(AGC
adjustment)
SHIPPING
0(leave factory set)
M3
BT
75(adjust white balance of brightness)
