- 46-
4) No sound
No sound
Y
N
Check if there is sound input
signal
Reset
volume
Y
Y
Check the
input
source
N
Check if the volume control is
at 0 level or muted
Check the
speakers
Y
N
Check if there is output at
J11
Check if there is +12V input at
PIN7
of U19
Check if the power supply
system is damaged, short
circuit or mis-connected
N
Y
Check if PIN1 of U19 is low
voltage
Check the volume control
circuit from U19
Y
N
& PIN12 of U16
Check the volume input
circuit from to
U19
N
Y
Replace U19
Check if there is signal input atPIN
3
Содержание LEC32B1380
Страница 18: ... 17 ...
Страница 26: ...7 Electrical parts 7 1 Block diagram 25 AMP Headphone Coaxial 1 2 MSD318QT Main IC ...
Страница 37: ...8 TV OPERATION 36 ...
Страница 38: ... 37 ...
Страница 39: ... 38 Press ENTER Key To Select ...
Страница 40: ... 39 Press ENTER Key To Select ...
Страница 41: ... 40 ...
Страница 44: ... 43 9 Trouble shooting 9 1 Simple check ...
Страница 46: ... 45 3 Panel display abnormally connector J9 is at normal level ...
Страница 50: ... 49 7 PC no picture or picture abnormal ...