Dynex DX-32L150A11 Service Manual page 9

c) Alignment at YPbPr mode
First perform ADC calibration: input 75% color bar plus gray step signal in 480i/60Hz format, (VG848
Timing is 968, PAT is 918), enter Factory Menu select ADC Setting, do ADC AUTO adjustment once.
White balance adjustment: From VG848 equipment input 8 gray steps signal in 1920 x 1080i /60Hz
format. Enter Factory Menu select "Color Temp", first set "Color Mode" to NORMAL, fix GAIN GREEN,
adjust GAIN RED and GAIN BLUE to make the 7th color coordinate be (285, 293). Fix OFFSET
GREEN, adjust OFFSET RED and OFFSET BLUE to make the second step color coordinate be (285,
293). In this way repeatedly adjust GAIN RED, GAIN BLUE and OFFSET RED, OFFSET BLUE until
two level gray step color coordinate be (285, 293). Then select "MENU" to return to previous menu or
select "SAVE TO EEPROM" to save the white balance.
Check if COOL and WARM color temperature meet the requirement. If not, then adjust GAIN RED,
GAIN BLUE, OFFSET RED, OFFSET BLUE to make them meet requirements, and then save.
d) Alignment at VGA mode
First do ADC calibration: input VESA crosshatch signal in 800 x 600 / 60Hz format (VG848 Timing is
854, PAT is 914), check if the picture is displayed wholly. If not, perform AUTO adjustment by making
use of VGA Setting sub-menu from SETUP menu (User menu) so that the picture is displayed wholly.
Then enter Factory Menu select ADC Setting, do ADC AUTO adjustment once to calibrate ADC.
White balance adjustment: From VG848 equipment input 8 gray steps signal in 800 x 600 /60Hz
format. Enter Factory Menu select "Color Temp", first set "Color Mode" to NORMAL, fix GAIN GREEN,
adjust GAIN RED and GAIN BLUE to make the 7th color coordinate be (285, 293). Fix OFFSET
GREEN, adjust OFFSET RED and OFFSET BLUE to make the second step color coordinate be (285,
293). In this way repeatedly adjust GAIN RED, GAIN BLUE and OFFSET RED, OFFSET BLUE until
two level gray step color coordinate be (285, 293). Then select "MENU" to return to previous menu or
select "SAVE TO EEPROM" to save the white balance.
Check if COOL and WARM color temperature meet the requirement. If not, then adjust GAIN RED,
GAIN BLUE, OFFSET RED, OFFSET BLUE to make them meet requirements, and then save.
4. Performance check
4.1 TV performance
Input RF signal, first enter into CHANNEL menu, then perform Auto Scan to check if all programs can
be found, the speaker output normally, picture is displayed normally. Pay special attention that both
NTSC and ATSC signals are found.
4.2 Checking AV/S-Video jacks
Respectively input signal from AV/S-VIDEO jacks, check if the picture and sound are normal.
4.3 Checking YPbPr/YCbCr jacks
Input YUV signal (from VG848 signal generator), respectively input all formats of YUV signal which is
shown at below (Table 8) to check if the display and sound are normal.
# Resolution
1 720×480i@59.94/60 Hz
2 720×480p@59.94/60 Hz
3 1280×720p@59.94/60 Hz
ALIGNMENT INSTRUCTIONS
Table 8 YUV signal formats
H-freq.
(kHz)
15.734
31.469
44.96
V-freq. Dot-Clk Freq.
(Hz) (MHz)
59.94/60 13.5
59.94/60 27.00
59.94 74.18
8
Remarks
480i(59.94/60p)
480p(59.94/60p)
720p(59.94/60p)