Customer Oriented R&D
Breakthrough
3. Digital TV Video Trouble Shooting
Check RF Cable
Y
Check TP Clock, Data, Sync
R631, R632, R629, R630
N
Maybe Demodulator has problems
Y
Maybe BCM3556(IC100)
has problems
Check Tuner(TU600) Power
(5.0V, 3.3V, 1.2V)
N
Replace one of Bead
& Recheck
Y
Check IF Signal pin #17, 18
N
Maybe Tuner has problems
Y
Check Demodulator Power
(3.3V, 1.2V) L604, IC601
N
Replace L604 / IC601
Y
Check Demodulator X-TAL
(X600)
N
Replace X-TAL
Y
Summary of Contents for 50PK550
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Page 38: ...Customer Oriented R D Breakthrough GPIO Structure ...
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Page 46: ...Customer Oriented R D Breakthrough No OSD Trouble Shooting Module Power Sequence ...