L32A404
11
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
Summary of Contents for ALPHA L32A404
Page 4: ...L32A404 4 Dimensions ...
Page 13: ...L32A404 13 Power Board ...
Page 31: ...L32A404 31 PCB Layout Main Board 715G3269M01001005K ...
Page 32: ...L32A404 32 ...
Page 33: ...L32A404 33 Power Board 715G3261P02000003S ...
Page 34: ...L32A404 34 ...
Page 35: ...L32A404 35 Key Board 715G3293 1 IR Board 715G3482 1 ...
