Sanyo LED-22XR10F, Service Manual

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5
Functions checkup
5.1 Analog & digital TV functions
Input central signal to RF port, enter into menu “
CHANNEL
”, then search channels automatically,
check if there is any omitted channel, check if the output of speakers and the picture are normal.
5.2 Composite video of AV port
Input composite video signal to AV port, check if the picture and the sound are normal;
5.3 Analog component YPbPr/YCbCr port
Input analog YUV signal from VG848 signal generator with YUV formats listed as Table 2 respectively,
check if the picture and the sound are normal under the circumstances of power-on/off, switching channel
and format, etc.
Table 2 YUV signal formats
No.
Definition H. - fre.
（
kHz
）
V. – fre.
（
Hz
）
Dot pulse fre.
（
MHz
）
Note
1 720×480 15.734 60 13.5 480i(NTSC)
2 720×480 15.734 59.94 13.5 480i(NTSC)
3 720×576 15.625 50 13.5 576i(PAL)
4 720×480 31.469 60 27 480p(NTSC PROG)
5 720×480 31.469 59.94 27 480p(NTSC PROG)
6 720×576 31.25 50 27 576p(PAL PROG)
7 1280×720 45 59.94 74.18 720p(59p)
8 1280×720 45 60 74.25 720p(60p)
9 1280×720 37.5 50 74.25 720p(50p)
10 1920×1080 33.75 59.94 74.25 1080i(59i)
11 1920×1080 33.75 60 74.25 1080i(60i)
12 1920×1080 28.125 50 74.25 1080i(50i)
13 1920×1080 67.5 59.94 148.35 1080p(59p)
14 1920×1080 67.5 60 148.5 1080p(60p)
15 1920×1080 56.25 50 148.5 1080p(50p)
16 1920×1080 - 23.94/24 - -
17 1920×1080 - 25 - -
18 1920×1080 - 29.97/30 - -
5.4 VGA port
Input VGA signal from VG848 signal generator to VGA port with VGA signal formats listed in Table 3
respectively, check if the display and the sound are normal, if there is any H/V offset, enter into main
menu and select items “
PICTURE”->“Screen”->“Auto Adjusting
” in turn to make calibration
automatically;
Table 3 VGA signal formats
No. Definition
H. - fre.
（
kHz
）
V. – fre.
（
Hz
）
Dot pulse fre.
（
MHz
）
Note
1 640×480 31.469 59.94 25.175 IBM
2 720×400 31.469 70.086 28.322 IBM
3 640×480 37.861 72.809 31.5 VESA
4 640×480 37.5 75 31.5 VESA
5 800×600 35.156 56.25 36 VESA
6 800×600 37.879 60.317 40 VESA