DAEWOO ELECTRONICS DTQ-14U1FS, Service Manual

Page: 25 / 44

2 24 4
T TR RO OUB UBL LES ESHOO HOOT TING ING G GUIDE UIDE
4. CH DON’T STOP 4. CH DON’T STOP
Check the input signal conditions Check the input signal conditions
NG NG : Loss of si : Loss of signal or weak signal gnal or weak signal
OK OK : Go : Go to the fi to the figure gure g g
U102 U102
TUNER TUNER
I701 I701
MICOM MICOM
# #1 11 1 # #1 12 2
# #2 29 9 # #3 30 0
T-DATA T-DATA T-CLOCK
T-CLOCK
5V 5V 33V 33V
IF OUT IF OUT
#1 #14 4
AF AFT T
#2 #27 7
#2 #28 8
SDA SDA
SCL SCL
h h
AG AGC IN C IN
XC701 XC701
32.768KHz 32.768KHz
#1 #10 0
ST-BY ST-BY
5V 5V
Check Check
the crystal the crystal
I703 I703
EEPROM EEPROM
#8 #8
ST-BY ST-BY
5V 5V
# #5 5 # #6 6
S SD DA A S SC CL L
Check Check
SDA/SCL SDA/SCL
Check Check
5V/33V LINE 5V/33V LINE
#1 #15 5
C103 C103
Check Check
RF AGC Voltage RF AGC Voltage
Check Check
AFT AFT win window dow Vol Voltag tage e
SF101 SF101
SAW FILTER SAW FILTER
I101 I101
#11 #11
#12 #12
#10 #10
#4 #4
RF AGC OUTPUT RF AGC OUTPUT
#4 #49 9
#4 #48 8
L501 L501
VCO COIL VCO COIL
Check Check
VCO coil VCO coil
2.1V~2.5V 2.1V~2.5V