Troubleshooting
RTX100A ISDB-T RF Signal Generator Service Manual
5-41
(A)
No
Is +5 VSB line at pin 9
of J170* on the A20 PCI
Backplane board correct
(4.9 V to 5.30 V)?
Yes
H
Check the cable 174-5172-00.
H
Check the 5 V main power supply
module on the A40 AC Distributer
board.
Replace the CPU board.
Yes
Yes
Yes
No
H
Check the 174-5185-00,174-5220-00,
and 174-5173-00 cables.
H
Check the ON/STBY switch on the
A35 Power switch board.
No
H
Check the 174-5174-00 cable.
H
Replace the CPU board.
No
Remove the A12 Main board or the
optional interface module (if installed)
from the A20 PCI Backplane board.
3
When the ON/STBY
switch is pressed, is the
voltage at pin 10 of J240*
about 5 V?
Is PWON# line at pin 10
of J170 on the A20 PCI
Backplane board about
0 V ?
Are all the voltages of
+5 V, +3.3 V, +12 V, and
--12 V correct ?
* See Figure 5-24 on page 5-45.
* See Figure 5-25 on page 5-46.
Figure 5-19: Troubleshooting procedure (4)
Содержание RTX100A
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Страница 10: ...Table of Contents vi RTX100A ISDB T RF Signal Generator Service Manual...
Страница 14: ...Service Safety Summary x RTX100A ISDB T RF Signal Generator Service Manual...
Страница 16: ...Environmental Considerations xii RTX100A ISDB T RF Signal Generator Service Manual...
Страница 21: ...Specifications...
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Страница 24: ...Product Overview 1 2 RTX100A ISDB T RF Signal Generator Service Manual...
Страница 36: ...Specifications 1 14 RTX100A ISDB T RF Signal Generator Service Manual...
Страница 37: ...Theory of Operation...
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Страница 44: ...Theory of Operation 2 6 RTX100A ISDB T RF Signal Generator Service Manual...
Страница 45: ...Performance Verification...
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Страница 73: ...Adjustment Procedures...
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Страница 78: ...Adjustment Procedures 4 4 RTX100A ISDB T RF Signal Generator Service Manual...
Страница 79: ...Maintenance...
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Страница 114: ...Removal and Installation Procedures 5 34 RTX100A ISDB T RF Signal Generator Service Manual...
Страница 130: ...Using the Recovery Discs 5 50 RTX100A ISDB T RF Signal Generator Service Manual...
Страница 131: ...Options...
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Страница 134: ...Options 6 2 RTX100A ISDB T RF Signal Generator Service Manual...
Страница 135: ...Diagrams...
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Страница 143: ...Replaceable Parts List...
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Страница 160: ...Replaceable Parts List 8 16 RTX100A ISDB T RF Signal Generator Service Manual...