Sharp LC-15AV7U, Руководство по обслуживанию

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5-2
A7121EA
The following adjustment normally are not attempted
in the field. Only when replacing the LCD Panel then
adjust as a preparation.
2. White Balance Adjustment
Purpose: To mix red, green and blue beams correctly for
pure white.
Symptom of Misadjustment: White becomes bluish or
reddish.
Test point Adj. Point Mode Input
Screen
M. EQ.
Spec.
Pattern Generator,
Color Analyzer
Figure
[RF/INPUT1]
C/D1
[INPUT2]
C/D2
White Purity
(APL 80%)
or
(APL 20%)
x (0.273 to 0.283)
y (0.281 to 0.291)
VOL -
buttons
Color Analyzer
It carries out in a darkroom.
L = 3 cm
Perpendicularity
INPUT: WHITE 80%, 20%
1. Operate the unit for more than 20 minutes.
2. Input the White Purity.
3. Set the color analyzer to the CHROMA mode and
bring the optical receptor to the center on the LCD-
Panel surface after zero point calibration as shown
above.
Note: The optical receptor must be set perpendicu-
larly to the LCD Panel surface.
4. [RF/INPUT1]
Enter the service mode. Press [VOL -] button on the
remote control unit and select "C/D1" mode.
[INPUT2]
Enter the service mode. Press [VOL -] button on the
remote control unit and select "C/D2" mode.
5. [RF/INPUT1]----(APL80%)
Press [6] button to select "DB(C/D1)" for Blue adjust-
ment. Press [4] button to select "DR(C/D1)" for Red
adjustment. When "x" value and "y" value are not
within specification, adjust "DB (C/D1)" or "DR (C/
D1)" or "DR (C/D1)". Refer to "1. Initial Setting."
[RF/INPUT1]----(APL 20%)
Press [3] button to select "COB(C/D1)" for Blue
adjustment. Press [1] button to select "COR(C/D1)"
for Red adjustment. When "x" value and "y" value are
not within specification, adjust "COB (C/D1)" or "COR
(C/D1)". Refer to "1. Initial Setting."
6. [INPUT2]----(APL 80%)
Press [6] button to select "C-DB(C/D2)" for Blue
adjustment. Press [4] button to select "C-DR(C/D2)"
for Red adjustment.When "x" value and "y" value are
not within specification, adjust "C-DB(C/D2)" or "C-
DR(C/D2)". Refer to "1. Initial Setting."
[INPUT2]----(APL 20%)
Press [3] button to select "C-COB(C/D2)" for Blue
adjustment. Press [1] button to select "C-COR(C/
D2)" for Red adjustment.When "x" value and "y" value
are not within specification, adjust "C-COB(C/D2)" or
"C-COR(C/D2)".
Refer to "1. Initial Setting."
7. Turn the power off and on again. (Main power button
on the TV unit.)
3. Sub-Brightness Adjustment
Purpose: To get proper brightness.
Symptom of Misadjustment: If Sub-Brightness is
incorrect, proper brightness cannot be obtained by
adjusting the Brightness Control.
Adj. Point Input
M. EQ.
Spec.
Pattern
Generator
Figure
Ant.input, Any channel,
SMPTE pattern,
[RF/INPUT1]: CG-931 (KENWOOD),
[INPUT2]: CG-931 (KENWOOD),
w/SETUP 7.5IRE
See below
[MENU]
button
White
Black
C position B position
A position
1. Enter the service mode. Then input above signal.
2. [RF/INPUT1]
Press [MENU] button on the remote control unit and
press [1] on the remote control unit. (selecting "BRT"
mode).