FAULT ISOLATION and CORRECTION
If the media converter fails, isolate and correct the failure by determining the answers to the following questions and then taking the indicated action:
1. | Is the Power LED on the media converter illuminated? |
| NO |
| • Is the power adapter the proper voltage and cycle frequency for the |
| AC outlet? |
| NOTE: Refer to the “Power Supply Requirements” on page 7. |
| • Is the power adapter properly installed in the media converter and |
Set switches 5, 6, and 7 to enable test functions or to permit normal network operation. (Switch 8 not used.)
1 | 2 | 3 | 4 | 5 | 6 |
| 7 | 8 |
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*NETWORK Switch Settings
5 6 7 8
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| in the outlet? |
| • | Contact Technical Support: (800) |
| YES |
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| • | Proceed to step 2. |
2. | Is the SDFiber (Signal Detect/Fiber) LED illuminated? | |
| NO |
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| • | Check fiber cables for proper connection. |
| • | Verify that TX and RX cables on media converter are connected to |
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| RX and TX ports, respectively, on other media converter. |
| • | Contact Technical Support: (800) |
| YES |
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| • | Proceed to step 3. |
3. | Is the SDTP (Signal | |
| NO |
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| • | Check twisted pair cables for proper connection. |
| • | Check |
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| configuration. |
| • | Check integrity of device attached to media converter by twisted- |
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| pair cable. |
KEY |
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1 | 2 |
= UP |
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= DOWN |
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1 | 2 |
1 | 2 |
1 | 2 |
1 | 2 |
12
Normal Operation
Loop Transmit TP to Receive TP
Transmit All Ones onto Fiber on loss of SDFiber
NO Transmit All Ones onto Fiber
Transmit All Ones onto TP on loss of SDTP
NO Transmit All Ones onto
| • Contact Technical Support: (800) |
| YES |
| • Proceed to step 4. |
4. | Is the AISFiber LED on either media converter illuminated? |
| NO |
| • Proceed to step 5. |
YES
*Switch #8 not used.
Set the
•Determine if broken fiber link has caused All Ones Insertion (AIS) on the fiber interface and correct failure. If not, proceed to step 5.
MDI
TP
AISFiber |
Fiber
TP
Twisted Pair #1
Twisted Pair #2
1 | RTIP |
| TTIP | Twisted | |
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2 | RRING |
| TRING | Pair | #1 |
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4 | TTIP |
| RTIP | Twisted | |
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5 | TRING |
| RRING | Pair | #2 |
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Connectors for unlike devices
1 | RTIP |
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| RTIP |
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2 | RRING |
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| RRING |
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4 | TTIP |
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| TTIP |
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5 | TRING |
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| TRING |
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Connectors for like devices
