- 61 -
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
PIN28 of U20
Check if the power supply
system is damaged, short
circuit or mis-connected
N
Y
Check if PIN1 of U20 is low
voltage
Check the volume control
circuit from U20
Y
N
Check if there is signal input at PIN3
& PIN12 of U20
Check the volume input
circuit from to
U20
N
Y
Replace U20
Содержание L32F1120
Страница 18: ... 17 ...
Страница 19: ... 18 ...
Страница 20: ... 19 ...
Страница 24: ...6 Operation Instructions Basal information 6 1 Front panel controls 6 2 Back panel controls 23 ...
Страница 45: ... 44 8 TV Operation ...
Страница 46: ... 45 ...
Страница 47: ... 46 ...
Страница 48: ... 47 ...
Страница 49: ... 48 ...
Страница 50: ... 49 ...
Страница 51: ... 50 ...
Страница 52: ... 51 ...
Страница 53: ... 52 ...
Страница 54: ... 53 ...
Страница 55: ... 54 ...
Страница 56: ... 55 ...
Страница 59: ... 58 9 Trouble shooting 9 1 Simple check ...
Страница 61: ... 60 3 Panel display abnormally connector J9 is at normal level ...
Страница 64: ...6 HDMI no picture or picture abnormal If CN2 CN3 is Q40 Q41 63 U1C ...
Страница 65: ... 64 7 PC no picture or picture abnormal ...
Страница 66: ... 65 8 YPBPR AV no picture or picture abnormal Check Y ...