
4-8
Abnormal color of video picture
Yes
Abnormal color of
video picture
Check whether the 3.3V
and 2.5V power supply
voltages on the decoder
board are normal.
Check Y1, R56, R56, C39 and C40
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 U3 or U14
、
U15
Yes
No
Check if the Y1 to Y6 signals on Pin164
to Pin 173 of U3 are normal
Содержание SDV434/19
Страница 23: ...Service Engineer Remarks 6 2 ...
Страница 25: ...6 4 6 4 Front Board Top Side Front Board Bottom side ...
Страница 29: ...7 3 7 3 Power Board Top Side ...
Страница 36: ...8 6 8 6 Mpeg Board Top Side ...
Страница 37: ...8 7 8 7 Mpeg Board Bottom Side ...
Страница 42: ...Mechanical Exploded view 9 1 ...
Страница 44: ...REVISION LIST Version 1 0 Initial release 10 1 ...