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TROUBLESHOOTING GUIDE Appendix
4. CH DON’T MEMORY or SKIP
(E)
Check The Iutput Signal Conditions
OK : Go To The Figure (E)
NG : Loss of Signal or Weak Signal
TU101
TUNER
Z101
SAW FILTER
IF
SCL/SD
33V
5V
CHECK
THE
VOLTAGE
#7,8
I701
CHECK
CLOCK,DATA
#18,19
X701
24.576MHz
CHECK THE
CRYSTAL
5V
3.3V
Z101
SAW FILTER
SIF
CHECK THE
VOLTAGE
#33
#22,43,45,63,80
#9,16,86,88
VIF
#28,29
I702
EEPROM
#5,6
#8
STB
CHECK THE
VOLTAGE