Daewoo DTQ-14U1FS/20U1FS, DTQ-14V1FC/20V1FC, DTQ-14U1FSP/20U1FSP service manual CH DON’T Stop, Micom

TROUBLESHOOTING GUIDE

4. CH DON’T STOP

Check the input signal conditions

NG : Loss of signal or weak signal

OK : Go to the figure g

h	33V	5V			Check
				5V/33V LINE
				U102	IF OUT
	T-DATA		TUNER
			T-CLOCK AGC IN

SF101

SAW FILTER

		C103
#29	#30
		#15			#4
					RF AGC OUTPUT
					Check
				RF AGC Voltage
		#14	AFT		#10
I701				Check	I101
MICOM
			AFT window Voltage
				2.1V~2.5V
		#27	SDA		#11
		#28	SCL		#12	#49	L501
						#48	VCO COIL
#10	#11	#12	SDA	SCL
XC701						Check
32.768KHz
	ST-BY		#5	#6		VCO coil
		5V		I703	Check
Check			EEPROM		SDA/SCL
				#8
the crystal

ST-BY

5V

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