XOCECO LC-27R18, Service Manual

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3
Alignment instructions
1. Test equipment
PM5518 (Video signal generator)
K-7253 (VGA signal generator)
CA210 (White balancer)
2. The alignment flow chart (see below figure)
3. The unit adjustment
Enter factory menu method: press the SOURCE → 2 → 5 → 8 → 0 buttons one by one on the remote
control to factory menu. Press the MENU button to select item. Press the DSP button to exit the
factory menu.
3.1 EEPROM initialization and back light adjustment
Enter the firs page of factory menu, adjust item (OPTION-1 to 9, OPTION-2 to 5 and back light to
255(LG PANEL) or 0(SHARP and CMO panel), select the EEPROM initial after, press the VOL+
Production of main board and analog board on the line.
Connect to central signal source; check if various
TV functions (station skipping, modulate quantity
control etc), check if the output of earphone and
speaker are normal.
Combined test for general assembly
Input AV/S signal and HDTV signal; check various
functions under AV/S terminal
Check accessories and then packing
Input VGA signal and check if display is normal in
the state of PC and various functions (analog
quantity control, line/field center etc.)
Check DDC, HDCP KEY and FLASH
Check CPU board and analog board