XOCECO LC-19HU26, Service Manual

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3
Alignment instructions
1. Test equipment
PM5518 (video signal generator)
VG-848 (VGA and HDMI signal generator)
CA210 (white balancer)
2 Alignment flow-chart
The alignment flow-chart is shown as fig-1
Fig-1 adjustment flow-chart
3 Unit adjustments
Connect all the boards according to wiring diagram, connect with power and observe the display.
Method for entering factory menu: press “INPUT”, “2”, “5”, ”8” and “0” in turn to enter factory menu;
press “CH+” and “CH-” to select adjustment items and press “VOL+” and “VOL-” to adjust value
items, press “MENU” continuously to exit.
3.1 Initialization
Enter factory menu, select “OPTION”, “EEPROM” and “HOTEL OPTION” sub-menu, adjustment of
items to see table1.
Table1 sub-menu adjustment
Items Preset Introduce
HOTEL 0 1: HOTEL OPTION of factory menu is optional
0: HOTEL OPTION of factory menu is not optional
LOGO 1 1: display LOGO in no signal or turn on
0: no LOGO display
ADC PRESCALE 046 Software auto preset according the unit
SIF PRESCALE 02E Software auto preset according the unit
Check DDC, FLASH and POWER control IC
Factory initialization setup
IF channel AFT voltage of TV and AGC voltage
White balance adjustment
Combined test for general assembly
Performance check
Preset ex-factory