20
TROUBLESHOOTING GUIDE

2-3) CHANNEL DON’T STOP

Check the input signal conditions. NG : Loss of signal or weak signal
OK : GO to the figure
e
Check
Voltage
e

U102

TUNER

ICS01
TIMER/SYSCON
33V 5V
#65 #67
MDATA
MCLK
I501

Z101

SAW FILT

IF OUT
#5 #6
#10
#10 AFT
#8
Check
IF Vcc(5V)
#71
#72
SCLKSDATA
#12
#11
Check
Signal
Check
AGC Voltage
#3
#48
#49
#35 #36 #38 #39
Check
the X-TAL
XS02
XCS01
#37
#34
VCC
Check
VCO COIL
#10
AGC IN
CC116
L110
VCO COIL
#56 #40
Caption CVS
Check Waveform
CVS 2Vp-p
Reset

IS02

EEPROM

#6
#5
#8
VCC
Check
SDA/SCL