Specifications

Service Modes, Error Codes, and Fault Finding
EN 8 TC5.1L CB5.
5.1.4 Raster OK, Sound OK, No AV picture
Figure 5-4 Raster OK, Sound OK, No AV picture
5.1.5 Raster OK, Sound OK, No TV picture
Figure 5-5 Raster OK, Sound OK, No TV picture
5.1.6 No picture, dense noise dots
Figure 5-6 No picture, dense noise dots
G_16340_006.eps
100306
To check whether R903, C903, R902
and R905, C908, R908 are ok?
Is the signal waveform at Pin 12 and
Pin 14 of IC901 right?
Raster OK, Sound OK, No AV picture
Replace IC901
Check Q917, Q918, Q919, ok?
Replace the fail component.
Y
N
N
Y
G_16340_007.eps
100306
Replace
IC901
Is the signal waveform at Pin 15 of IC901
right?
Raster OK, Sound OK, No TV picture
Check R234, Q204, R235, C229
N
Y
G_16340_009.eps
100306
No picture, dense noise
dots
Is the antenna feed line
or the adapter broken?
Handing the antenna
fault
Is the signal at
Pin41, Pin42 of
IC101 ok?
Check/Replace
IC101
Is the signal at IF
pin of the tuner ok?
Check the relative
circuit of Q101,
Z141 etc
Is the signal at Pin SCL,
SDA of tuner ok?
Check EEPROM
Check/Replace
Tuner
Is the supply
voltage of tuner ok?
Check signal at P5, P57, P58,
P59, and P60 of IC101 and
replace the abnormal relative
circuit
Check/Replace
IC201, IC202,
D101.
Y
N N
N
Y
Y
Y
Y
Y
N
N