ViewSonic VA2226w-1, Service Manual

Page: 48 / 80

45
ViewSonic Corporation
Confidential - Do Not Copy
VA2226w-1
4. Burn-in pattern
Enter the factory mode, Plug out VGA, Burn-in pattern will self generate automatically. You
can not escape from Burn-in pattern until plug in VGA Cable or press the Menu/Power key,.
5. Auto Color Balance (Automatically calibrate chip ADC parameter by using chip
internal DAC.)
If it is a new-built set and it is first time to do the “auto color”, please confirm the following
steps:
-Connect the VGA cable with the standard video pattern generator and display 32-gray
pattern on the monitor.
- Press “Power” to power off the monitor.
- Enter the Factory Mode.
- Then press the “Menu/POWER” to execute Auto Color item.
- After the “Auto Color” process finished, please press “Power” to restart monitor.
6. EDID (Rewrite EDID data to EEPROM)
If we need to rewrite the EEPROM data, please confirm the following steps.
1. Plug in VGA Cable; we can rewrite the EDID data to EEPROM by using “EDID Rewrite”
program.
2. If the “EDID Rewrite” process finished, please pull out AC power cable or press power key
to restart
7. Upload firmware to MCU via VGA Cable
7.1 Connect ISP board between monitor and PC as below configuration.
7.2. Press the “connect” button in ISP.exe, and select the device type, which is used in
this monitor. Choose the corresponding firmware version, and load to MCU.
7.3. After finish, please plug out power cable and re-start monitor again.
Insert to Parallel
Port on PC
ISP Board
LCD Monitor
D-Sub
Parallel Port
D-SUB