- 62 -
5
˅
TV failure
TV no channel
Check if there is RF
signal input
Y
Check if there is
+5V at PIN7 of
U24
N
Y
Y
Y
N
Check the power
supply circuit to
this PIN7
Check if there is
intermediate
frequency signal
output at PIN10
of U24
Check if there
is I2C signal
at PIN6 &
PIN7 of U24
Check the I2C
circuit
between
U1 and
U24
Check the
tuner
Check the signal
circuit between
U1 and U24
Fix the RF
set
N
PIN11
Содержание L32F1120
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Страница 24: ...6 Operation Instructions Basal information 6 1 Front panel controls 6 2 Back panel controls 23 ...
Страница 45: ... 44 8 TV Operation ...
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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 ...