![background image](http://html1.mh-extra.com/html/viewsonic/vg920-1/vg920-1_service-manual_1021240026.webp)
3.)Into factory mode of VG720
A
、
First Power off, then press Switch 2 button along with press Power button will activate
the factory mode, then MCU will do AUTO LEVEL automatically. Meanwhile press
MENU the OSD screen will located at
LEFT TOP OF PANEL
.
4.)Bias adjustment :
Set the
Contrast
to 70
Adjust the
Brightness
to 100
.
5.)Gain adjustment :
Move cursor to “-F-” and press MENU key
A
、
Adjust 9300 color-temperature
(1)
、
Switch the Chroma-7120 to
RGB-Mode
(with press “MODE” button )
(2)
、
Switch the MEM. channel to Channel 9 ( with up or down arrow on chroma 7120 )
(3)
、
The LCD-indicator on chroma 7120 will show x = 0.283
±
0.03, y =0.298
±
0.03,
Y = 250
±
20 cd/m
2
(4)
、
Adjust the RED of color1 on factory window until chroma 7120 indicator reached
the value R=100
(5)
、
Adjust the GREEN of color1 on factory window until chroma 7120 indicator reached
the value G=100
(6)
、
Adjust the BLUE of color1 on factory window until chroma 7120 indicator reached
the value B=100
(7)
、
Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the
tolerance =100
±
5
B
、
Adjust 6500 color-temperature
(1)
、
Switch the chroma-7120 to
RGB-Mode
(with press “MODE” button )
(2)
、
Switch the MEM .channel to Channel 10( with up or down arrow on chroma 7120 )
(3)
、
The LCD-indicator on chroma 7120 will show x = 0.313
±
0.03, y = 0.329
±
0.03, Y =
260
±
20 cd/m
2
(4)
、
Adjust the RED of color3 on factory window until chroma 7120 indicator reached
the value R=100
(5)
、
Adjust the GREEN of color3 on factory window until chroma 7120 indicator reached
the value G=100
(6)
、
Adjust the BLUE of color3 on factory window until chroma 7120 indicator reached
the value B=100
(7)
、
Repeat above procedure ( item 4,5,6) until chroma 7120 RGB value meet the
tolerance =100
±
5
23
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VG920-1
Summary of Contents for VG920-1
Page 24: ...Power Block Function 21 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 40: ...37 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 43: ...5 7 Packing For Shipping 40 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 52: ...6 Trouble Shooting Flow Chart 49 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 79: ...11 2 MAIN BOARD PCB BUTTON VIEW 76 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 81: ...11 5 POWER PCB TOP VIEW 78 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 82: ...11 6 POWER PCB BUTTON VIEW 79 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 83: ...11 7 AUDIO PCB TOP VIEW 80 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 84: ...11 8 AUDIO PCB BUTTON VIEW 81 ViewSonic Corporation Confidential Do Not Copy VG920 1...