White-Balance, Luminance Adjustment - Hitachi 22LD4550U Service Manual

22"LCD TV
7. White Balance, Luminance Adjustment
1. ADC Calibration
1.1. ADC Calibration
ADC
22LD4550U
1.1.1 Prepare
1) Power on the Chorma 22291/23291 and power on the PC.
2)Change TV Source to PC mode。
3) Connect PC Com3 to Chroma 22291/23291 RS-232 connector. Make sure USB-to-Serial Com to Com7.
1.1.2 ADC Picture
1.1.3 ADC Adjust
1)Open the program，press the Config button，if serial Comm open fail, then you must check whether Com3 and
Com7 are exist。
2)If step one is OK，press the PROGRAM button start adjustment。
3) If adjust successful , "ADC" will be green, as
as 。
Component
Timing:314
Pattern:185
720P/50HZ
。 If adjust fail ,"ADC" will be red,
74
Hitachi 22LD4550U
RGB-PC
Timing:137
Pattern:42
1024*768/50HZ