HP L1950 - HP L1750 - Monitor - How to enter service mode - adjustments - SMPS schematic
HP
L1950 & L1750 - LCD Monitors - SMPS - Back-Light inverter - Scalar board Schematic - Service Mode Entry Procedure - adjustments
AOC & HP Monitors
Factory mode (Service Mode) of HP L1710 and HP1950
Turn
on power, 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.
Press reset key and Turn the Power-button “off to on” to quit from factory mode.
White-
Balance, Luminance Adjustment
Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment.
1. How to do the Chroma-7120 MEM .Channel setting
A. Reference to chroma 7120 user guide
B. 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
Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment.
1. How to do the Chroma-7120 MEM .Channel setting
A. Reference to chroma 7120 user guide
B. 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. 9300k color:
9300 color temp. parameter is x = 283 ±15, y = 297 ±15, Y> 190 cd/m2 ,
B. sRGB color:
sRGB color temp. parameter is x = 313±15, y = 329 ±15, Y>200 cd/m2)
C. 6500K color:
6500K color temp. parameter is x = 313±15, y = 329 ±15, Y>230 cd/m2)
A. 9300k color:
9300 color temp. parameter is x = 283 ±15, y = 297 ±15, Y> 190 cd/m2 ,
B. sRGB color:
sRGB color temp. parameter is x = 313±15, y = 329 ±15, Y>200 cd/m2)
C. 6500K color:
6500K color temp. parameter is x = 313±15, y = 329 ±15, Y>230 cd/m2)
3.
Into factory mode of HP L1710
Turn on power, 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.
4. Bias adjustment
Turn on power, 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.
4. Bias adjustment
Set
the Contrast to 80
Adjust the Brightness to 90.
Adjust the Brightness to 90.
5.
Gain adjustment
Move cursor to “-F-” and press MENU key
A. Adjust 9300k color-temperature
1. Switch the Chroma-7120 to 9300k channel.
2. The chroma 7120 will show x = 283±15, y = 297 ±15, Y>190 cd/m2
3. Switch the chroma-720 to RGB MODE (with press “MODE” button to change )
4. Adjust the RED of color 9300K on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color 9300K on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color 9300K 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 9300k color-temperature
1. Switch the Chroma-7120 to 9300k channel.
2. The chroma 7120 will show x = 283±15, y = 297 ±15, Y>190 cd/m2
3. Switch the chroma-720 to RGB MODE (with press “MODE” button to change )
4. Adjust the RED of color 9300K on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color 9300K on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color 9300K 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
SMPS and Back-light inverter Schematic
Power
board 715G2655
Back-light inverter
Scalar 715G2559
B.
Adjust sRGB color-temperature
1. Switch the chroma-7120 to sRGB channel.
2. The chroma 7120 will show x = 313 ±15, y = 329 ±15, Y >200 cd/m2
3. Switch the chroma 7120 l to RGB MODE ( with press “MODE” button to change )
4. Adjust the RED of color sRGB on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color sRGB on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color sRGB 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 sRGB channel.
2. The chroma 7120 will show x = 313 ±15, y = 329 ±15, Y >200 cd/m2
3. Switch the chroma 7120 l to RGB MODE ( with press “MODE” button to change )
4. Adjust the RED of color sRGB on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color sRGB on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color sRGB 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 6500k color-temperature
1. Switch the chroma-7120 to 6500K channel.
2. The chroma 7120 will show x = 313 ±15, y = 329 ±15, Y >230 cd/m2
3. Switch the chroma 7120 l to RGB MODE ( with press “MODE” button to change )
4. Adjust the RED of color sRGB on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color sRGB on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color sRGB 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. Press reset key and Turn the Power-button “off to on” to quit from factory mode.
1. Switch the chroma-7120 to 6500K channel.
2. The chroma 7120 will show x = 313 ±15, y = 329 ±15, Y >230 cd/m2
3. Switch the chroma 7120 l to RGB MODE ( with press “MODE” button to change )
4. Adjust the RED of color sRGB on factory window until chroma 7120 indicator reached the value R=100
5. Adjust the GREEN of color sRGB on factory window until chroma 7120 indicator reached the value G=100
6. Adjust the BLUE of color sRGB 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. Press reset key and Turn the Power-button “off to on” to quit from factory mode.