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(4) with sound but no picture
If there is no picture
in all channels?
Yes
Check
N108
its peripheral circuit
With sound but no picture
Display OSD MENU?
Yes
Display LOGO?
Yes
Check if the crystal in data processing board starts,
DDR clock and DDR SDRAM are normal?
No
and
Refer to (6), (7), (8), (9), (10),
(11), (12) checking procedure
34
No
If pin5 of X602 (IRR) has signal?
No
Yes
Refer to (5) checking
procedure
No
Check N801, N802, DDR
and their peripheral circuit
and power supply
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