Chapter 3
72
Speaker No Sound
Audio R/L source
had plug IN?
Check Audio R/L
source cable
Replacement IO/B or Speaker
Video can Display ?
Check Video cable or
Replacement Video Cable
Speaker R/L cable
plug IN?
Check Speaker cable or
Replacement Speaker cable
END
Mute turn off
Volume set 50
Audio R/L source
had plug IN?
Check Audio R/L
source cable
Replacement IO/B or Speaker
Video can Display ?
Check Video cable or
Replacement Video Cable
Speaker R/L cable
plug IN?
Check Speaker cable or
Replacement Speaker cable
END
Mute turn off
Volume set 50
H
Speaker have Sound
Output
Speaker have Sound
Output ?
no
Replacement M/B
no
no
no
no
Summary of Contents for AT4250-DTV
Page 9: ...Chapter 1 3 System Block and Wiring Diagram ...
Page 10: ...4 Chapter 1 LCD Main Board Block Diagram ...
Page 20: ...14 Chapter 1 4 PC key Toggle VGA between input sources Item Input Button Guide ...
Page 45: ...AT4250 CHASSIS ASSY 16 2 NO OPERATION INSTRUCTION 1 LOCK SCREW T4 12 TO FASTEN BACK COVER 1 ...
Page 89: ......
