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Service Manual
Model No.:
N
Check the tuner 5
(TDA18273 and
the main chip 10
(MSD318) circuit
etween the
Check and
repair
peripheral
RF
equipment
TV no searching
/no image
Check whether
external RF input signal
is normal
Y
Whether R50 or R51
got intermediate-frequency signal
Y
Function unit (ATV video r oke down)
Whether main oard testing TP3 point got 3.3V
Y
Check R6 or R7
whether there is I2C data
N
Check the tuner
5 (TDA18273)
related circuits
-
-
Pictur e 5
Y
N
N
Check whether I2C
network pull-up
voltage is normal
Check and
repair
power
supply
network 4
circuit of
this pin
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