Performance Check - Dynex DX-L37-10A Service Manual

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 COOL, fix GAIN
GREEN, adjust GAIN RED and GAIN BLUE to make the 7
OFFSET GREEN, adjust OFFSET RED and OFFSET BLUE to make the second step color
coordinate be (272, 278). In this way repeatedly adjust GAIN RED, GAIN BLUE and OFFSET
RED, OFFSET BLUE until two level gray step color coordinate be (272, 278). Then select
"MENU" to return to previous menu or select "SAVE TO EEPROM" to save the white balance.
Check if NORMAL 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 correction: 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 correct 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 COOL, fix GAIN
GREEN, adjust GAIN RED and GAIN BLUE to make the 7
OFFSET GREEN, adjust OFFSET RED and OFFSET BLUE to make the second step color
coordinate be (272, 278). In this way repeatedly adjust GAIN RED, GAIN BLUE and OFFSET
RED, OFFSET BLUE until two level gray step color coordinate be (272, 278). Then select
"MENU" to return to previous menu or select "SAVE TO EEPROM" to save the white balance.
Check if NORMAL 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 ATV and DTV 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
Alignment Instruction
th
color coordinate be (272, 278). Fix
th
color coordinate be (272, 278). Fix
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