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TROUBLESHOOTING GUIDE
2. NO PICTURE
Check The Waveform of TU101 IF PIN
(A)
CHECK
CLOCK,DATA
CHECK THE
CRYSTAL
(B)
CHECK THE
HOUT
CHECK THE
RGB OUT
5V
3.3V
CHECK THE
VOLTAGE
TU101
TUNER
Z101
Z101
SAW FILTER
SAW FILTER
SCL/SD
#7,8
#18,19
#73
#83,84,85
I701
#22,43,45,63,80
#9,16,86,88
CHECK THE
190V LINE
NG : Go To The Figure (A)
OK : Go To The Figure (B)
IF
#22,43,45,63,80
I701
#9,16,86,88
X701
24.576MHz
D405
D406
-36-
Appendix
33V
CHECK
THE
5V
VOLTAGE
CHECK THE
VOLTAGE
5V
3.3V
CHECK THE
HEATER
VOLTAGE
T402
FBT
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