XOCECO LC-42T17, Service Manual

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e. Enter the color temperature setup menu.
f. Adjust the RED OFFSET, GREEN OFFSET, BLUE OFFSET, until the third level color coordinate
(284, 299).
g. Adjust the RED GAIN, GREEN GAIN, BLUE GAIN, until the seventh level color coordinate (284,
299).
h. Repeat the f and g step, until the third and the seventh level color coordinate (284, 299).
i. Color temperature to cool.
j. Adjust the RED OFFSET, GREEN OFFSET, BLUE OFFSET, until the third level color coordinate
(270, 283).
k. Adjust the RED GAIN, GREEN GAIN, BLUE GAIN, until the seventh level color coordinate (270,
283).
l. Repeat the j and k step, until the third and the seventh level color coordinate (270, 283).
4 Performance check
4.1 TV terminal
Input the center signal source to RF terminal, enter searching menu
→ auto search, check if the
leak channel, half-auto search channel, fine tune, earphone and speaker are normal. Check the AV
OUT.
4.2 AV1/S/AV2 input terminals
Input AV1/S/AV2 signal source, check the picture and sound.
4.3 VGA terminal
Input the VGA signal (K7253 signal generator), separate input VGA format signal of table 1, check
the picture and sound
Table1 PC display format signal
No. Resolution H-frequency(kHz) V-frequency(Hz)
pixel clock pulse
frequency(MHz)
remark
1 720 x 400 31.47 70.08 25.17 DOS
2 640 x 480 31.50 60.00 25.18 DOS
3 640 x 480 37.90 72.00 31.50 Mac.(SOG)
4 640 x 480 37.50 75.00 31.50 VESA
5 640 x 480 43.30 85.00 36.00 VESA
6 800 x 600 35.16 56.25 36.00 VESA
7 800 x 600 37.90 60.00 40.00 VESA
8 800 x 600 46.90 75.00 49.50 VESA
9 800 x 600 48.08 72.19 50.00 VESA
10 832 x 624 49.00 74.00 57.27 Mac.(H+V)
11 1024 x 768 48.40 60.00 65.00 VESA
12 1024 x 768 56.50 70.00 75.00 VESA
13 1024 x 768 60.00 75.00 78.75 VESA
14 1280 x 1024 64.00 60 108.00 SXGA
15 1280 x 1024 80.00 75 135.00 SXGA
16 1600 x 1200 75.00 60 162.00 UXGA
4.4 YPbPr terminal
Input the YPbPr signal source (K7253 signal generator), separate input format signal in table of