XOCECO LC-52R36, Service Manual

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3. Adjustment illustration
3.1 The unit adjustment
Connect all the boards according the wiring diagram, then power on and check the display.
3.2 The method for entering factory menu
Enter factory menu method: press the SOURCE → 2 → 5 → 8 → 0 buttons one by one on the remote
control to enter factory menu. When the first line of the adjustment item is light, press the MENU
button to select item and press the DSP button to exit the factory menu.
3.3 EEPROM initialization
Enter the firs page of factory menu, adjust item OPTION-1 to 25, OPTION-2 to 5, select the
EEPROM Initial after, press the VOL+ button, then display the DOING, still the DOING disappear
and turn off the unit.
Note: option-1 and option-2 function as follows:
Option-1 Option-2
Bit4 0: RS232 can’t be controlled by the external unit
1: RS232 can be controlled by the external unit
0: Gammar On
1: Gammar Off
Bit3 0: No memory function after power off for 10s
1: memory function after power off for 10s
0:no signal noise wave of TV
1:no signal blue screen of TV
Bit2,1 00: STANDBY
01: turn on
10: memory function of turn on
hold
Bit0 0: without LOGO
1: With LOGO
0: Video and Graphic channel white balance no share
1: Video and Graphic channel white balance share
3.2 HDMI channel adjustment
Input the VG-848 TIME854(800X600/60Hz) and PATTERN920 8-LEVEL gray signal, enter the
factory menu2(white balance adjustment menu), adjust the third step and the seventh step.
Adjust R-offset, G-offset and B-offset item, still the third step color coordinate to (275, 285). Adjust
R-gain, G-gain and B-gain item, still the seventh step color coordinate to (275, 285). Repeat
adjustment R-offset, G- offset and B- offset item and R-gain, G-gain and B-gain item, still two step
gray to (275, 285).
Note: R-offset, G-offset, B-offset values must be an item value to 128 at least; R-gain, G-gain,
B-gain values must be an item value to 255 at least.
3.3 VGA channel adjustment
3.3.1 mode pre-set
Input the VGA signal of VG-848 (PATTERN 980:1 dot ON/OFF), select the TIME877 (720x400/70Hz)
signal, press auto-adjust button to all screen or adjust PC settings menu to auto correction.
Separate auto adjust for TIME885 (640x480/60Hz) and TIME854 (800x600/60Hz).
3.3.2 VGA channel auto color adjustment
Input the VG-848 TIME854(800x600/60Hz) and PATTERN920(GRAY 8 STEP(H)), enter the factory
menu1, select the AUTO COLOR after, press the VOL+ button to select AUTO COLOR.
3.4 YPBPR channel adjustment
Input the VG-848 TIME972(1080i/60Hz) and PATTERN976(64 GRAY & Color), enter the factory
menu1, select the AUTO COLOR after, press the VOL+ button to select AUTO COLOR.