Ch Don' T Stop; Troubleshooting Guide - Daewoo DTH-29M2FS Service Manual

TROUBLESHOOTING GUIDE

4. CH DON' T STOP

Check the input signal conditions
h
#10
X 702
32.768KHz
Check
5V
33V
5V/33V LINE
TU102
IF OUT
TUNER
SDA SCL
AGC IN
C109
#29 #30
#15
AGC
AFT
#14
I701
MICOM
SDA
#29
SCL
#30
SDA
#11 #12
ST-BY
5V
Check
the crystal
Check
RF AGC Voltage
Check
AFT window Voltage
2.1V~2.5V
SCL
#5 #6
I702
Check
EEPROM SDA/SCL
#8
ST-BY
5V
12
NG : Loss of signal or weak signal
OK : Go to the figure g
SF101
SAW FILTER
#5 #6
#4
RF AGC
#10
I101
#11
#12
#49
VCO COIL
#48
Check
VCO coil
Appendix
L105