Read Sharp XG-NV4SE (serv.man4) Service Manual online
25
XG-NV4SE/SM
XG-NV40SA
XG-NV40SA
No.
Adjusting point
Adjusting conditions
Adjusting procedure
8
RGB counter-
voltage
adjustment
voltage
adjustment
1. Feed the black-and-red
(25%) stripe signal (S-
VGA).
VGA).
2. Make the following choice:
Group : OUTPUT 3
Subject : RC (R)
Subject : RC (R)
»
Using the control switches or the remote controller
buttons, adjust the data in order to minimize the
flicker.
buttons, adjust the data in order to minimize the
flicker.
»
Make the same adjustment for BC (B) and GC (G).
»
See if the image is equally adjusted at the center
and both sides of the screen. If not, readjust the
setting to have the image equal at right and left.
and both sides of the screen. If not, readjust the
setting to have the image equal at right and left.
10
RGB white
balance
balance
1. Feed the 32-step gray scale
signal (S-VGA).
Group : OUTPUT 1
Subject : R1-BLK (R)
Group : OUTPUT 1
Subject : R1-BLK (R)
B1-BLK (B)
»
Choose the subjects R1-BLK and B1-BLK and
adjust the black balance of the gradation.
adjust the black balance of the gradation.
1
2
9
RGB gradation
regeneration
adjustment
regeneration
adjustment
1. F e e d t h e g r e e n - o n l y
SMPTE pattern signal.
Group : OUTPUT 1
Subject : G1-BLK
Group : OUTPUT 1
Subject : G1-BLK
»
Adjust the G-GAIN data until the gradation of the
portion
portion
1
(95% and 100% white) shown below can
be slightly recognized. Make sure also that the
gradation of the portion
gradation of the portion
2
(0% and 5% black) is
visible.
12
Video picture
adjustment
adjustment
1. Feed the split colour bar
signal.
Group : VIDEO 1
Subject : PICTURE
Group : VIDEO 1
Subject : PICTURE
2. Connect the oscilloscope
between pin (2) of P801
and GND.
and GND.
»
Using the control switches or the remote controller
buttons, adjust the black-to-white (100%) level
difference to 2.2 ±0.02 Vp-p.
buttons, adjust the black-to-white (100%) level
difference to 2.2 ±0.02 Vp-p.
11
Horizontal
center
center
1. Feed the NTSC mono-
scope pattern signal.
2. Group : VIDEO 2
Subject : N358-DLY (4)
N443-DLY (0)
PAL-DLY (0)
SECAM-DLY (0)
PAL-DLY (0)
SECAM-DLY (0)
Make sure the settings are
as above.
3. Group : VIDEO 1
Subject : NTSC-H
»
Using the control switches or the remote controller
buttons, adjust the data to have the same overscan.
buttons, adjust the data to have the same overscan.
2.2Vp-p
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