SMPS, LVDS, Audio output and Back-light inverter board – circuit diagrams – Service Mode – Adjustments - AOC 20 Inch LCD monitor - AOC2016V
How to enter the Service Mode
> Press
the MENU button, pull out the power cord, and then plug the power cord.
The factory OSD will be displayed at the left top of the panel.
> Turn
the Power-button off to quit from factory mode.The factory OSD will be displayed at the left top of the panel.
Adjustments
Bias
adjustment:
Set the Contrast to 50; Adjust the Brightness to 80.
5. Gain adjustment:
Move cursor to “-F-” and press MENU key
A. Adjust Warm (6500K) color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 3 (with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 313 ±25, y = 329 ±25, Y=200cd/m2
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE 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±2
B. Adjust Normal (7300K) color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 4(with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 301 ±25, y = 317 ±25, Y=200cd/m2
Set the Contrast to 50; Adjust the Brightness to 80.
5. Gain adjustment:
Move cursor to “-F-” and press MENU key
A. Adjust Warm (6500K) color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 3 (with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 313 ±25, y = 329 ±25, Y=200cd/m2
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE 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±2
B. Adjust Normal (7300K) color-temperature
1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button)
2. Switch the MEM.channel to Channel 4(with up or down arrow on chroma 7120)
3. The LCD-indicator on chroma 7120 will show x = 301 ±25, y = 317 ±25, Y=200cd/m2
4. Adjust the RED on
factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE 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±2
5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE 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±2
C.
Adjust Cool (9300K) 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 = 283 ±25, y = 297 ±25, Y=200cd/m2
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE on factory window until chroma 7120 indicator reached the value B=100
7. RepeaD. 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 = 313 ±25, y = 329 ±25, Y= 200cd/m2
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE 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±2
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 = 283 ±25, y = 297 ±25, Y=200cd/m2
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE on factory window until chroma 7120 indicator reached the value B=100
7. RepeaD. 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 = 313 ±25, y = 329 ±25, Y= 200cd/m2
4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100
6. Adjust the BLUE 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±2
White-
Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
Before started adjust white balance , please set the Chroma-7120 MEM Channel 3 to Warm (6500K)
color, MEM Channel 4 to Normal (7300K) color, MEM Channel 9 to Cool (9300K) color , and MEM
Channel 10 to sRGB color ( our Warm color parameter is x = 313 ±25, y = 329 ±25, Y=200cd/m2(typ);
Normal color parameter is x = 301 ±25, y = 317 ±25, Y=200cd/m2 (typ); Cool color parameter is
x = 283 ±25, y = 297 ±25, Y=200cd/m2 (typ); sRGB color parameter is x = 313 ±25, y = 329 ±25,
Y= 200cd/m2)
How to setting MEM channel you can reference to chroma 7120 user guide or simple use “ SC” key and
“ NEXT” Key to modify xyY value and use “ID” key to modify the TEXT description Following is the procedure
to do white-balance adjust .
2. Setting the color temp. you want
A. MEM.CHANNEL 3 (Warm color):
Warm color temp. parameter is x = 313 ±25, y = 329 ±25, Y=200cd/m2
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
Before started adjust white balance , please set the Chroma-7120 MEM Channel 3 to Warm (6500K)
color, MEM Channel 4 to Normal (7300K) color, MEM Channel 9 to Cool (9300K) color , and MEM
Channel 10 to sRGB color ( our Warm color parameter is x = 313 ±25, y = 329 ±25, Y=200cd/m2(typ);
Normal color parameter is x = 301 ±25, y = 317 ±25, Y=200cd/m2 (typ); Cool color parameter is
x = 283 ±25, y = 297 ±25, Y=200cd/m2 (typ); sRGB color parameter is x = 313 ±25, y = 329 ±25,
Y= 200cd/m2)
How to setting MEM channel you can reference to chroma 7120 user guide or simple use “ SC” key and
“ NEXT” Key to modify xyY value and use “ID” key to modify the TEXT description Following is the procedure
to do white-balance adjust .
2. Setting the color temp. you want
A. MEM.CHANNEL 3 (Warm color):
Warm color temp. parameter is x = 313 ±25, y = 329 ±25, Y=200cd/m2
B.
MEM.CHANNEL 4 (Normal color):
Normal color temp. parameter is x = 301 ±25, y = 317 ±25, Y=200cd/m2
C. MEM.CHANNEL 9(Cool color):
Cool color temp. parameter is x = 283 ±25, y = 297 ±25, Y=200cd/m2
D. MEM.CHANNEL 10 (sRGB color):
sRGB color temp. parameter is x = 313 ±25, y = 329 ±25, Y= 200cd/m
Normal color temp. parameter is x = 301 ±25, y = 317 ±25, Y=200cd/m2
C. MEM.CHANNEL 9(Cool color):
Cool color temp. parameter is x = 283 ±25, y = 297 ±25, Y=200cd/m2
D. MEM.CHANNEL 10 (sRGB color):
sRGB color temp. parameter is x = 313 ±25, y = 329 ±25, Y= 200cd/m
715G2510 SMPS
Schematic
B-L Inverter
LVDS
Audio Output
Click on the schematics to magnify