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TROUBLESHOOTING GUIDE Appendix
2.NO PICTURE
33V 5V
Composite Video
Check
clock/data
signal
#61
#27 #28
#29 SDA #4
#30
SCL #3
#10 #11 #12
X701
32.768KHz
ST-BY
5V
Check the crystal
(d)
Check composite video #61
Check Vsup(+5V) #58
#17 check Vsup(+3.3V)
Check HOUT #50 #15
#39
I501
Check RGB Signal OUTPUT
#38
#37 Check
200V LINE
Check Vsup(+5V) #36 D405
T402
FBT
D406
Check
heater voltage
Check clock/data signal
MICOM
check the waveform of I501 #61
I501
VDP3130Y
NG : Go to the figure (c)
OK : Go to the figure (d)
U101
TUNER
CVBS
T-DATA T-CLOCK
I701
Check
the VOLTAGE