Read Sharp XG-C40XE (serv.man4) Service Manual online
27
XG-C40XU/XE
1
2
2.0Vp-p
No.
Adjusting point
Adjusting conditions
Adjusting procedure
11
RGB counter-
voltage
adjustment
voltage
adjustment
1. Feed the black-and-red
(25%) stripe signal (XGA).
2. Make the following choice:
Group : OUTPUT 3
Subject : RC (R)
and
Group : OUTPUT 3
Subject : RC-INV (R)
Subject : RC (R)
and
Group : OUTPUT 3
Subject : RC-INV (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), GC (G),
RC-INV (B) and RC-INV (G).
RC-INV (B) and RC-INV (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.
12
RGB gradation
regeneration
adjustment
regeneration
adjustment
1. Feed the green-only SMPTE
pattern signal (XGA).
Group : OUTPUT 1
Subject : G1-BLK
Group : OUTPUT 1
Subject : G1-BLK
»
Adjust the G-BLK 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.
13
RGB white
balance
balance
1. Feed the 32-step gray scale
signal (XGA).
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.
14
Horizontal
center
center
1. Feed the NTSC monoscope
pattern signal.
2. Group : VIDEO 2
Subject : N358-DLY (4)
N443-DLY (0)
PAL-DLY (3)
SECAM-DLY (0)
PAL-DLY (3)
SECAM-DLY (0)
Make sure the settings are
as above.
3. Group : VIDEO 1
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.
15
Video picture
adjustment
adjustment
1. Feed the split colour bar sig-
nal.
Group : VIDEO 1
Subject : PICTURE
Group : VIDEO 1
Subject : PICTURE
2. Connect the oscilloscope
between pin (2) of P801 and
GND.
GND.
»
Using the control switches or the remote controller
buttons, adjust the black-to-white (100%) level
difference to 2.0
buttons, adjust the black-to-white (100%) level
difference to 2.0
±
0.02 Vp-p.
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