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3-8
Abnor
m
al
color
of
video
picture
Yes
Abnormal color of
video picture
Check whether the 3.3V
and 1.8V power supply
voltages on the decoder
board are normal.
Check Y1, R32, R47, C40,C41
Check other of power supply electric
circuit
Correct the connection
Check whether the
video filter network
circuit is normal.
Yes
Yes
No
No
No
Check whether the
27MHz output signal is
Trouble shooting chart
change U1
Yes
No
Check if the video signals on Pin 182 to
Pin 187 of U1 are normal
Содержание DVP3980KX/77
Страница 28: ...Front Board Print layout Bottom side 5 11 5 11 ...
Страница 29: ...5 12 5 12 Power Board Print layout Bottom Side ...
Страница 30: ...5 13 5 13 Switch Board Print layout Bottom Side ...
Страница 31: ...5 14 5 14 OK USB Board Print layout Bottom side ...
Страница 32: ...5 15 5 15 Main Board Print layout Top side ...
Страница 33: ...6 14 6 14 Main Board Print layout Bottom side 5 16 5 16 ...
Страница 36: ...REVISION LIST Version 1 0 Initial release Version 1 1 Adding DVP3980KX 77 IM OPU 7 1 ...