Asus PA246Q, Service Manual

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Service Manual PA246Q
51
1. Setup input timing to any preset modes, pattern 41(full white color pattern) with Analog signals from
Chroma video pattern generator.
2. Enter factory mode (Press menu key and up key then press power key, hold on about 2 sec will enter the
factory mode.).
3. Confirm auto color balance adjustment had already been done.
4. Measure each color temperature (C1, C2 & C3) by Minolta CA-110 (or equivalent equipment).
5. Two methods can be used to adjust RED, GREEN, BLUE value of each color temperature, C1, C2 & C3 to
meet following spec requirement, the 1
st
method is by using external PC and IIC alignment protocol to do
automatic adjustment, and the 2
nd
method is by manually and must be in factory mode.
x+- 0.283+(-) 0.015
y+- 0.297+(-) 0.015
Color temperature
(9300K set on OSD)
Y 200
x+- 0.313+(-) 0.015
y+- 0.329+(-) 0.015
Color temperature
(6500K set on OSD)
Y 270
x+- 0.346+(-) 0.015
y+- 0.359+(-) 0.015
Color temperature
(5000K set on OSD)
Y 230
6. Turns off the monitor power.
Writing EDID file: (Analog, DVI-D, HDMI, and DP)
1. Setup a PC with DDC card.
2. Connect PC to monitor with a D-sub signal cable.
3. Provided the AC power to monitor.
4. Please refer to the C212 for the correct EDID file.
5. Runs the writing program to write the EDID file into EEPROM for Analog input.
6. Read EEPROM data and confirm if it’s matched with the definition.
7. Write digital EDID data into EEPROM for DVI-D/HDMI and DP input.
8. If adopting non EDID copy method then repeat Step 2-5 with designated digital video input and cable.
9. If adopting EDID copy method, please refer to attached file.
10. Read both EEPROM data and confirm if it’s matched with the C212 definition.