Saturday, February 14, 2015

XOCECO - INSIGNIA 19KK44 SERVICE MODE POWER SUPPLY AND INVERTER CIRCUIT

XOCECO - INSIGNIA 19KK44 

LCD TV

SERVICE MODE POWER SUPPLY AND INVERTER CIRCUIT 

SERVICE MODE
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;“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 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.
Auto 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. Connect CA210 to USB port of a compute with a data line, connect VG848 and TV to COM port or virtual COM port of a computer respectively (default connection is that VG848 to COM5 and TV to COM1; enter into administrator window with password “xoceco” to change the default connection if necessary and then save it); be sure to output VG848 signal to AV2
YPbPr2 VGA HDMI3 ports of TV. Open file “White_Balance.exe”, load config file “AdjustConfig.txt”, then connect CA210 VG848 TV respectively according to the indication of interface prompt .(note: set probe as “0-CAL”before connecting to CA210, then press item “connect to CA210”, set probe as “MEAS” when a prompt “CA-210 connection and correction are normal” is displayed on the left-bottom side; default channel for CA210 is CH02 BBY; enter into administrator window with password “xoceco” to change the default setting if apparatus is different and then save it.) Press item “auto white balance adjustment”, auto-adjustment will be completed when a prompt “adjusting successfully” is displayed.
User menu setup before leaving factory
Enter into factory menu, select item “Reset to default”, the machine will preset items of user menu automatically before leaving factory. Be sure to do this step after alignment in the factory.
SMPS POWER SUPPLY CIRCUIT 

BACK LIGHT INVERTER CIRCUIT 

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