Sanyo LCD-42XR2 Service Manual page 8

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
No. Resolution
1 720 x 400
2 640 x 480
3 640 x 480
4 640 x 480
5 640 x 480
6 800 x 600
7 800 x 600
8 800 x 600
9 800 x 600
10 832 x 624
11 1024 x 768
12 1024 x 768
13 1024 x 768
14 1280 x 1024
15 1280 x 1024
16 1600 x 1200
4.4 YPbPr terminal
Input the YPbPr signal source (K7253 signal generator), separate input format signal in table of
Table1 PC display format signal
H-frequency(kHz) V-frequency(Hz)
31.47 70.08
31.50 60.00
37.90 72.00
37.50 75.00
43.30 85.00
35.16 56.25
37.90 60.00
46.90 75.00
48.08 72.19
49.00 74.00
48.40 60.00
56.50 70.00
60.00 75.00
64.00 60
80.00 75
75.00 60
6
pixel clock pulse
frequency(MHz)
25.17 DOS
25.18 DOS
31.50 Mac.(SOG)
31.50 VESA
36.00 VESA
36.00 VESA
40.00 VESA
49.50 VESA
50.00 VESA
57.27 Mac.(H+V)
65.00 VESA
75.00 VESA
78.75 VESA
108.00 SXGA
135.00 SXGA
162.00 UXGA
remark