Sharp LC-20AV7U Service Manual - Page 15

White Balance Adjustment - remote

Get Sharp LC-20AV7U PDF manuals and user guides View all Sharp LC-20AV7U manuals
Add to My Manuals
Save this manual to your list of manuals

Page 15 highlights

Item DR(C/D1) C-DR(C/D2) DB(C/D1) C-DB(C/D2) Button (on the remote control) [VOL -] → [4] [VOL -] → [6] Data Value 128 128 128 128 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 [VOL -] buttons [RF/INPUT1] C/D1 [INPUT2] C/D2 White Purity (APL 80%) or (APL 20%) M. EQ. Spec. Pattern Generator, Color analyzer x= 0.278 ± 0.005 y= 0.286 ± 0.005 Figure It carries out in a darkroom. Perpendicularity [INPUT2] Enter the Service mode. Press [VOL -] button on the remote control unit and select "C/D2" mode. 5. [RF/INPUT1]----(APL 80%) Press [6] button to select "DB(C/D1)" for Blue adjustment. 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)". 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 "CCOB(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.) L = 3 cm INPUT: WHITE 80%, 20% Color Analyzer Note: Use the service remote control unit 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 perpendicularly 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. 5-2 A7144EA

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
5-2
A7144EA
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.
Note:
Use the service remote control unit
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
perpendicularly 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]----(APL 80%)
Press [6] button to select “DB(C/D1)” for Blue
adjustment. 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)”. 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.)
DR(C/D1)
[VOL -]
→
[4]
128
C-DR(C/D2)
128
DB(C/D1)
[VOL -]
→
[6]
128
C-DB(C/D2)
128
Test Point
Adj. Point
Mode
Input
Screen
[VOL -]
buttons
[RF/INPUT1]
C/D1
[INPUT2]
C/D2
White Purity
(APL 80%)
or
(APL 20%)
M. EQ.
Spec.
Pattern Generator,
Color analyzer
x= 0.278 ± 0.005
y= 0.286 ± 0.005
Figure
Item
Button
(on the
remote control)
Data
Value
Color Analyzer
It carries out in a darkroom.
L = 3 cm
Perpendicularity
INPUT: WHITE 80%, 20%