TROUBLESHOOTING GUIDE | Appendix |
2.NO PICTURE
check the waveform of I501 #61
NG : Go to the figure (c)
OK : Go to the figure (d)
Check
the VOLTAGE
33V | 5V | ||
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U101 TUNER
CVBS
Composite Video
Check clock/data signal
#27 #28
I701
MICOM
#29
#30
#10 | #11 | #12 |
#61
I501
VDP3130Y
SDA | #4 |
SCL | #3 |
X701ST-BY
32.768KHz | 5V | Check clock/data signal |
Check the crystal
(d)
Check composite video | #61 |
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Check Vsup(+5V) | #58 |
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| #17 |
Check HOUT | #50 | #15 |
| #39 | I501 |
Check RGB Signal OUTPUT#38 |
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| #37 |
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Check Vsup(+5V) | #36 |
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check Vsup(+3.3V)
T402
FBT
Check
200V LINE
D405
D406
Check
heater voltage
