Customer Oriented R&D
Breakthrough
2. No OSD Trouble Shooting
Replace Power board
N
Y
Check 5V Voltage Level
at P500
Check Power connector
Y
Check all multi voltage
(1.2v, 3.3v, 1.8v)
N
Check power up boot sequence
Y
Check P202
(TXAC-), (TXAC+), (TXBC-),
(TXBC+)
N
Y
Check LVDS Cable
N
Replace Cable
Y
Check PDP Module
Check 5V Voltage Level
at L501
N
Replace one of L501
& Recheck
Y
Maybe BCM3556(IC100)
has troubles
It should satisfy the
Pixel Clock
on CAS.
Electrical Specifications
Power Supply Sequence
Input Signal Timing Specification
Control Signal Register
Check CAS
Check P500 5V_ON
Check P202 DISP_EN
Check GPIO Path of Micom
N
Y
Summary of Contents for 50PK550
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Page 46: ...Customer Oriented R D Breakthrough No OSD Trouble Shooting Module Power Sequence ...
