Ch Don't Stop - Daewoo DTQ-14U1FS/20U1FS Service Manual

TROUBLESHOOTING GUIDE
4. CH DON' T STOP
Check the input signal conditions
h
XC701
32.768KHz
Check
5V
33V
5V/33V LINE
U102
IF OUT
TUNER
T-DATA T-CLOCK
AGC IN
C103
#29 #30
#15
AFT
#14
I701
MICOM
AFT window Voltage
SDA
#27
SCL
#28
SDA SCL
#10 #11 #12
ST-BY #5
5V I703
EEPROM
Check
#8
the crystal
ST-BY
5V
NG : Loss of signal or weak signal
SF101
SAW FILTER
#4
RF AGC OUTPUT
Check
RF AGC Voltage
#10
I101
Check
2.1V~2.5V
#11
#12
#6
Check
SDA/SCL
24
OK : Go to the figure g
#49
L501
VCO COIL
#48
Check
VCO coil