Sharp LC-30HV4U Service Manual page 26

LC-30HV4U
LC-30HV4D
Item
4 MAIN N358 TINT
Adjustment
5 MAIN N358 Cr GAIN
Adjustment
6 MAIN N358
CONTRAST Adjustment Location: Pin (7) of P801
7 Two-screen setting
N358 Cr GAIN
8 SUB N358 Y
CONTRAST Adjustment Location: Pin (9) of P801
9 SUB N358 COLOR
GAIN Adjustment
10 SUB N358 TINT
Adjustment
Adjusting conditions/points
Page: 3
Location: Pin (3) of P801
Page: 3
Location: Pin (5) of P801
Page: 3
Press the TWIN PICT-
URE key.
Page: 4
Page: 4
Location: Pin (11) of P801
Page: 4
Location: Pin (11) of P801
26
Adjusting procedure
Adjust "MAIN N358 TINT" so that the bottom edges
of the waveform at pin (3) of P801 are in line with
each other as shown below.
Adjust "MAIN N358 CR GAIN" so that the width
shown below is 0.525 ± 0.01 Vp-p at pin (5) of P801.
0.53Vp-p
Adjust "MAIN CONTRAST 15K" so that the
difference between black and while peaks is
0.95 ± 0.02 V at pin (7) of P801.
Make the adjustment-purpose special two-screen
setting.
(The same images should appear on the main and
sub screens.)
Adjust "SUB N358 Y CONTRAST" so that the
difference between the black and white peaks is
1.5 ± 0.02 Vp-p at pin (9) of P801.
1.5Vp-p
Adjust "SUB N358 COLOR GAIN" so that the black
peak is 1.125 ± 0.01 Vp-p at pin (11) of P801.
1.13Vp-p
Adjust "SUB N358 TINT" so that the bottom edges
of the waveform at pin (11) of P801 are in line with
each other as shown below.
Smoothed
Smoothed