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APPENDIX
TROUBLESHOOTING GUIDE
2. NO PICTURE
Check the waveform of I101 #46
c
the voltages
33V
T-DATA T-CLOCK
#29 #30
#10
XC701
32.768KHz
Check
the crystal
d
Z501
Check
RBG Vcc (9V)
Check
RBG signal output
Check
ABL current
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Check
5V
U102
IF OUT
TUNER
Check
clock/data signal
AFT
#14
I701
Check
MICOM
IF Vcc (5V)
#27
SDA
#28
SCL
#11 #12
Check
ST-BY
clock/data signal
5V
Check
composite video
#44
C525
#43
#18
#25
I101
#19
#20
#21
#13
NG : GO to the figure c
OK : Go the figure d
SF101
SAW FILTER
#5
#6
IF AGC voltage
#10
#3
#8
#4
I101
#11
#46
#12
#44
Check
the waveform
Check
CHROMA/VER Vcc(5V)
Check
HOR/BUS Vcc(5V)
D405
T402
FBT
R412
21V
-3V
11
Check
Check
RF AGC voltage
Z501
4.5M Trap
Check
200V LINE
Check
heater voltage
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