Insignia 19KK44 Service Manual page 10

of the 13th scale as （280、288）;fix item "Green Offset", adjust items "Red Offset、Blue Offset"
to set chromaticity coordinates of the 4th scale as （280、288）. Repeat adjust items "Red Gain、
Blue Gain" and "Red Offset、Blue Offset" until chromaticity coordinates of both gray scales are
（280、288）, the error of dark scale should be within ±8 and the error of bright scale should be
within ±5; then press key "Menu" to return to the superior menu.
Check if color temperature of "NORMAL" and "WARM" is normal (the error of dark scale should
be within ±8, the error of bright scale should be within ±5); otherwise adjust item "Color Temp
NORMAL" and "Color Temp WARM" to meet requirements and then save them.
Note: Should not need to adjust white balance if panel has good coincidence indicator.
VGA white balance alignment
ADC correction:
Input signal with format of 640×480/60 Hz and content of 16 gray-scale (Timing of VG848 is 1,
PAT is 921 ); enter into "Auto Color" page of factory menu, set item "Source" as "VG848", then
select item "Start to do auto color" and press key "Enter", the picture will twinkle for a moment
and then return to normal, a prompt of "Auto Color Successful"will be displayed, that is, ADC
correction is completed; press key "Menu" to return to the superior menu;
White balance adjustment:
The set should be working for over 30 minutes before white balance adjustment so that it can be
in a stable state. Use apparatus CA210 and change to CH2 channel, input signal with format of
640×480/60 Hz and content of 16 gray-scale, enter into page "White Balance/Color Temp" of
factory menu, fix item "Green Gain", adjust items "Red Gain、Blue Gain" to set chromaticity
coordinates of the 13th scale as （280、288）;fix item "Green Offset", adjust items "Red Offset、
Blue Offset" to set chromaticity coordinates of the 4th scale as （280、 288） . Repeat adjust items
"Red Gain、Blue Gain" and "Red Offset、Blue Offset" until chromaticity coordinates of both gray
scales are（280、288）, the error of dark scale should be within ±8 and the error of bright scale
should be within ±5; then press key "Menu" to return to the superior menu.
Check if color temperature of "NORMAL" and "WARM" is normal (the error of dark scale should
be within ±8, the error of bright scale should be within ±5); otherwise adjust item "Color Temp
NORMAL" and "Color Temp WARM" to meet requirements and then save them.
Note: Should not need to adjust white balance if panel has good coincidence indicator.
Auto white balance adjustment
Pre-ADC correction
Enter into factory menu, set item "InputSource" as "Component1\Component2", input signal with
format of 720P/60 Hz and content of SMPTE color bar plus gray scale (Timing of VG848 is 976，
PAT is 984), then enter into page "Auto Color", set item "Source" as "VG848", set item "Test
Pattern" as "SMPTE Color Bar", then select item "Start to do auto color", press key "Enter", the
picture will twinkle for a moment and then return to normal, a prompt of "Auto Color Successful"
will be displayed, that is, ADC correction is completed; press key "Menu" to return to the superior
menu; then set item "InputSource" as "VGA", input signal with format of 640×480/60 Hz and
content of 16 gray-scale(Timing of VG848 is 1, PAT is 921 ), follow above steps to complete ADC
correction.
Alignment Instruction