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2. No OSD Trouble Shooting

Replace Power board
NY
Check 5V Voltage Level
at P500 Check Power connector
Y
Check 5V Voltage Level at Q501 NReplace one of Q501
& Recheck
Y
Check P903
(TXAC-), (TXAC+), (TXBC-),
(TXBC+), Display Enable
N
Y
Check LVDS Cable NReplace Cable
Y
Check PDP Module
Check 5V Voltage Level
at L507, L501
NReplace one of L507,501
& Recheck
Y
Maybe S7(IC101)
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 GPIO Path of Micom
N
Y