C. Adjust SRGB 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 = 200
±
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
E. Press reset key and Turn the Power-button “off to on” to quit from factory mode.
2. Geometry
1).Set cross-hatch pattern and preset timing as timing table listed.
2).Change to each mode in turn and wait for the monitor finish auto-alignment and save
press
before change to next mode.
3).Until all of modes are adjusted, exit OSD menu and press POWER OFF to exit factory mode.
5.4 Factory Defaults
Item Defaults Item
Defaults
Contrast
70%
Volume
50%
(For VA702mb only)
Brightness
100%
Balance
N/A
Color Temperature
6500K
Treble
N/A
Sharpness
0%
Bass
N/A
OSD H. Position
50%
720x400/640x400
720x400
OSD V. Position
50%
640x480@60Hz
720x480@60Hz
640x480@60Hz
OSD Time Out
15 Sec
In SOG and Composite,
720x480@60Hz
640x480@60Hz
N/A
OSD Background
Enabled
In SOG and Composite,
1152x864@75Hz
1152x870@75Hz
N/A
Resolution Notice
Enabled
In SOG and Composite,
1280x768@60/75/85Hz
1024x768@60/75/85Hz
N/A
21
ViewSonic Corporation
Confidential - Do Not Copy
VA502mb-1
Summary of Contents for VA502mb-1
Page 10: ...7 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 13: ...10 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 14: ...11 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 16: ...PIN Descriptions 13 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 18: ...Block Diagram PIN Function 15 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 38: ...5 7 Packing Procedure 35 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 42: ...39 ViewSonic Corporation Confidential Do Not Copy VA502mb 1 6 Troubleshooting Flow Chart...
Page 43: ...7 Block Diagram 40 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 53: ...9 PCB Layout Diagrams MAIN BOARD 50 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 54: ...POWER BOARD 51 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 56: ...53 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 57: ...AUDIO BOARD 54 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 58: ...KEY BOARD 55 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 61: ...58 ViewSonic Corporation Confidential Do Not Copy VA502mb 1 Packing for Shipping...