Service manual

C.TIMING CHART
Video
Back porch Active display Front porch
Sync.
Sync-width
Total
Preset
Modes
VGA
720X400
VGA
640X480
VESA
640X480
VESA
640X480
VESA
800X600
VESA
800X600
Pixel clock
(
MHz
)
28.325 25.175 31.500 31.500 36.000 40.000
H-Frequency
(KHz)
31.472 31.469 37.861 37.500 35.156 37.879
H-Total
(
µ
s)
31.774 31.778 26.413 26.667 28.444 26.400
H-Active Display (µs)
25.419 25.422 20.317 20.317 22.222 20.000
H-Blanking (µs)
6.355 6.356 6.095 6.349 6.222 6.400
Front Porch (µs)
0.635 0.636 0.762 0.508 0.667 1.000
H-Sync-width (µs)
3.813 3.813 1.270 2.032 2.000 3.200
H-Back Porch (µs)
1.906 1.907 4.063 3.810 3.556 2.200
V-Frequency
(
Hz
)
70.1 59.94 72.81 75.0 56.25 60.3
V-Total
(ms)
14.267 16.683 13.735 13.333 17.778 16.579
V-Active Display (ms)
12.710 15.253 12.678 12.800 17.067 15.840
V-Blanking (ms)
1.557 1.430 1.057 0.533 0.711 0.739
V-Front Porch (ms)
0.413 0.318 0.238 0.027 0.028 0.026
V-Sync-width (ms)
0.064 0.064 0.079 0.080 0.057 0.106
V-Back Porch (ms)
1.080 1.049 0.740 0.427 0.626 0.607
H/V Sync. Polarity
－ ＋ － － － － － － ＋ ＋ ＋ ＋
Interlace
NONE NONE NONE NONE NONE NONE