Troubleshooting
4-40
MTX100A MPEG Recorder & Player Service Manual
(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.
2
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 4-23 on page 4-44.
* See Figure 4-24 on page 4-45.
Figure 4-18: Troubleshooting procedure (3)
Summary of Contents for MTX100A
Page 4: ......
Page 14: ...Service Safety Summary x MTX100A MPEG Recorder Player Service Manual ...
Page 16: ...Environmental Considerations xii MTX100A MPEG Recorder Player Service Manual ...
Page 21: ...Specifications ...
Page 22: ......
Page 24: ...Product Overview 1 2 MTX100A MPEG Recorder Player Service Manual ...
Page 39: ...Theory of Operation ...
Page 40: ......
Page 51: ...Performance Verification ...
Page 52: ......
Page 105: ...Maintenance ...
Page 106: ......
Page 140: ...Removal and Installation Procedures 4 34 MTX100A MPEG Recorder Player Service Manual ...
Page 152: ...Troubleshooting 4 46 MTX100A MPEG Recorder Player Service Manual ...
Page 156: ...Using the Recovery Discs 4 50 MTX100A MPEG Recorder Player Service Manual ...
Page 157: ...Options ...
Page 158: ......
Page 160: ...Options 5 2 MTX100A MPEG Recorder Player Service Manual ...
Page 161: ...Diagrams ...
Page 162: ......
Page 164: ...Diagrams 6 2 MTX100A MPEG Recorder Player Service Manual ...
Page 166: ...6 4 MTX100A MPEG Recorder Player Service Manual ...
Page 168: ...6 6 MTX100A MPEG Recorder Player Service Manual ...
Page 173: ...Replaceable Parts List ...
Page 174: ......
Page 190: ...Replaceable Parts List 7 16 MTX100A MPEG Recorder Player Service Manual ...