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TROUBLESHOOTING GUIDE
2. NO PICTURE
Check the waveform of I101 #46
c
X701
32.768KHz
d
Check
RBG signal output
Check
ABL current
Check
the voltages
33V
5V
U101
IF OUT
TUNER
T-DATA T-CLOCK
clock/data signal
#29 #30
AFT
#14
I701
MICOM
#27
SDA
#28
SCL
#10
#11 #12
ST-BY
clock/data signal
5V
Check
the crystal
Check
composite video
Z501
#44
C503
#18
Check
RBG Vcc (9V)
#19
#20
#21
#13
SF101
SAW FILTER
Check
#5
#10
#8
Check
IF Vcc (5V)
I101
#11
#12
Check
Check
CHROMA/VER Vcc(5V)
#43
Check
HOR/BUS Vcc(5V)
#25
I101
14
NG : GO to the figure c
OK : Go the figure d
Check
#6
IF AGC voltage
#3
#4
Check
RF AGC voltage
#46
Z501
4.5M Trap
#44
Check
the waveform
Check
200V LINE
D405
T402
FBT
R404
Check
heater voltage
21V
-3V
Appendix
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