XOCECO LC-27W18S Service Manual - page 7
5
Input signal in the TV/AV/S states, connect the SCART2 terminal to the TV. Change the unit channel,
check if output signal of SCART2 is current signal, and the image and sound is normal.
6.4 YPbPr/YPbPr terminal
Input the YUV signal (VG-848 signal generator), separate input YUV format signal of table 1, check
if the image and sound is normal. If the image is deflection of the H-field, select auto sync correction
of the SCREEN menu. If the image is slight disturb, adjust the FINE TUNE correction of the
SCREEN menu. Open the PIP mode, connect the earphone, and check if the image and sound is
normal.
Table 1 YUV format signal
H-frequency(kHz)
V-frenquency(Hz)
signal
1 15.734
59.94
SDTV
480i
2 31.469
59.94
HDTV
480p
4 44.955
59.94
HDTV
720p
6 33.716
59.94
HDTV
1080i
7 15.625
50
SDTV
576i
8 31.25
50
HDTV
576p
9 33.75
50
HDTV
1080i
10 37.50
50
HDTV
720p
6.5 VGA terminal
Input the VGA signal (VG-848 signal generator), separate input VGA format signal of table 1, check
if the image and sound is normal. If the image is deflection of the H-field, select auto sync correction
of the SCREEN menu. If the image is slight disturb, adjust the FINE TUNE correction of the
SCREEN menu. Open the PIP mode, connect the earphone, and check if the image and sound is
normal.
6.6 HDMI terminal
HDMI signal format receive the three high definition signal: 480P, 576P, 720P/50/60 Hz, 1080I/50/60
Hz, except for the table 2 signal. Check if the image (contain HDCP ON and OFF) and sound is
normal. If the image is deflection of the H-field, select auto sync correction of the SCREEN menu.
Open the PIP mode, connect the earphone, and check if the image and sound is normal.
TABLE2 VGA signal format
resolution H-frequency(kHz) V-frenquency(Hz)
Point clock pulse
frenquency(MHz)
remark
1 720 X 400
31.469
70.086
28.322
IBM
2 640 X 480
31.469
59.94
25.175
IBM
3 640 X 480
37.861
72.809
31.5
VESA
4 640 X 480
37.5
75
31.5
VESA
5 640 X 480
43.269
85.008
36
VESA
6 800 X 600
35.156
56.25
36
VESA
7 800 X 600
37.879
60.317
40
VESA
8 800 X 600
48.077
72.188
50
VESA
9 800 X 600
46.875
75
49.5
VESA
10 800 X 600
53.674
85.061
56.25
VESA
11 1024 X 768
48.363
60.004
65
VESA