Insignia 19KK44 Service Manual page 9

Alignment Instruction
Alignment instruction
Unit adjustment
According to wiring diagram "9219KK4401JL", connect main board, FM board, power board, key
board and IR board correctly, connect to AC120V power supply, then power on the set, check if
display is normal.
Factory menu using method
a) First press key "INPUT", then press number keys "2、5、8、0" in turn to enter initial class
factory menu;
b) Press keys "CH+"and"CH-", move cursor to each adjustment page of initial class
factory menu, then press key"ENTER"to enter into adjustment menu of each adjustment page;
c) Press keys "CH+" and "CH-" to move cursor upwards or downwards within any adjustment
page;
d) Move cursor to any adjustment item, press key"VOL-"or"VOL+"to adjust it;
e) Press key"MENU"to return to initial menu from any page of adjustment menu;
f) Press key"EXIT"to exit factory menu at any time;按"EXIT"
g) Set item "Aging Mode" as "On"to enter into factory-aging mode;
White balance adjustment
Pre-adjustment
The set should be working for over 30 minutes before white balance adjustment so that it can be
in a stable state. Use white balance apparatus CA210 and change to BBY channel to adjust
white balance;
Only need to adjust chromaticity coordinates when color temperature is 10000K (namely "COOL")
for the unit. To meet testing requirements of BBY when color temperature is 8000K or 6500K,
make sure chromaticity coordinates of bright scale is X=280 ± 5 Y=288 ± 5, chromaticity
coordinates of dark scale is X=280±8 Y=288±8;
Manual adjustment of both groups of white balance datum
YPbPr white balance adjustment
ADC correction:
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 ); enter into page "Auto Color" of factory menu, 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;
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
720P/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