How to enter service mode - AOC WA17W - 17 inch LCD monitor - Power and Backlight inverter circuit diagram - adjustments
Panel SpecificationHannStar Display model HSD170MGW1-B00 is a color active matrix thin film transistor (TFT) liquid crystal display (LCD) that uses amorphous silicon TFT as a switching device. This model is composed of a TFT LCD panel, a driving circuit and a back light system. This TFT LCD has a 17.0 inch diagonally measured active display area with XGA resolution (900 vertical by 1440 horizontal pixel array) and can display up to 16.2M (6-bit+FRC) colors.
17.0 WXGA+ for Monitor application
High Resolution: 1440*900
2-ch LVDS interface system
LCD Timing Controller
Wide Viewing Angle
RoHS compliance.
Factory mode (Service Mode) of WA17W
Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel.
Turn the Power-button off to quit from factory mode.
White- Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
1. 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=180cd/m2; Normal color parameter is x = 301 ±25, y = 317 ±25, Y=180cd/m2; Cool color parameter is x = 283 ±25, y = 297 ±25, Y=180cd/m2; sRGB color parameter is x
= 313 ±25, y = 329 ±25, Y= 180cd/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=180cd/ m2
B. MEM.CHANNEL 4 (Normal color):
Normal color temp. Parameter is x = 301 ±25, y = 317 ±25, Y=180cd/ m2
C. MEM.CHANNEL 9 (Cool color):
Cool color temp. parameter is x = 283 ±25, y = 297 ±25, Y=180cd/m2
D. MEM.CHANNEL 10 (sRGB color):
sRGB color temp. parameter is x = 313 ±25, y = 329 ±25, Y= 180cd/m2
Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment.
1. 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=180cd/m2; Normal color parameter is x = 301 ±25, y = 317 ±25, Y=180cd/m2; Cool color parameter is x = 283 ±25, y = 297 ±25, Y=180cd/m2; sRGB color parameter is x
= 313 ±25, y = 329 ±25, Y= 180cd/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=180cd/ m2
B. MEM.CHANNEL 4 (Normal color):
Normal color temp. Parameter is x = 301 ±25, y = 317 ±25, Y=180cd/ m2
C. MEM.CHANNEL 9 (Cool color):
Cool color temp. parameter is x = 283 ±25, y = 297 ±25, Y=180cd/m2
D. MEM.CHANNEL 10 (sRGB color):
sRGB color temp. parameter is x = 313 ±25, y = 329 ±25, Y= 180cd/m2
3. Into Factory mode of WA17W:
Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel.
SMPS and Back-light Inverter circuit diagram (Schematic)
Audio output schematic
Click on the schematics to magnify
4. Bias adjustment:
Set the Contrast to 50; Adjust the Brightness to 80.
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=180cd/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
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=180cd/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=180cd/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.
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=180cd/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. Repeat above procedure (item 4, 5, 6) until chroma 7120 RGB value meet the tolerance =100±2
D. 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= 180cd/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.
E. Turn the Power-button off to quit from factory mode.
