L55S603
14
3). No Sound, Sound Failed (Loading Interrupt, Noise, Etc.)
First, confirm the connection of all connectors between Board's and speakers, then survey by following the flowchart
as shown below.
No Sound, Sound failed
(Loading interruption,
Noise, etc)
Occured at only
Video1 input (CVBS), or
Video2 input (CVBS, S2)?
Main Board
No
Yes
Main Board or Speaker units
Voltage of
pin No.3 or 4 of CN701 on
Main Board is 12V?
Power Board
No
Yes
