XOCECO LC-27U16, Service Manual

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3
Alignment instruction
1 Alignment equipment
PM5518 (video signal generator)
K-7253 (VGA 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 digital board, CPU board and analog board according to wiring diagram, connect with
power and observe the display.
Method for entering factory menu: press “SLP”, “DSP”, “MENU” and “DSP” 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” to exit.
Note:
the white balance adjustment should be done under “nature” picture mode.
3.1 Initialization
Enter factory menu, select “Factory settings” sub-menu, and adjustment for items of table1.
Check DDC, HDCP KEY and CPU
Factory initialization setup
IF channel voltage of TV and AGC voltage adjustment
Support format of VGA pre-set
Adjustment for sub-brightness and white balance of VGA/HDMI (color
temperature 6500k, 9300k and 12000k)
Adjustment for sub-brightness and white balance of YPbPr/YcbCr channel
Adjustment for sub-brightness and white balance of VIDEO channel
Preset ex-factory