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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
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Chapter 1 General Troubleshooting
1.12 Power and LED Tests
Figure 1-7
shows the layout of a cross-over cable.
Figure 1-7
Cross-Over Cable Layout
Table 1-33
shows cross-over cable pinouts.
Note
Odd-numbered pins always connect to a white wire with a colored stripe.
1.12 Power and LED Tests
This section provides symptoms and solutions for power supply problems, power consumption, and LED
indicators.
1.12.1 Power Supply Problems
Symptom
Loss of power or low voltage, resulting in a loss of traffic and causing the LCD clock to reset
to the default date and time.
Table 1-34
describes the potential causes of the symptom and the solutions.
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
55416
Table 1-33
Cross-Over Cable Pinout
Pin
Color
Pair
Name
Pin
1
White/orange
2
Transmit Data +
3
2
Orange
2
Transmit Data –
6
3
White/green
3
Receive Data +
1
4
Blue
1
—
4
5
White/blue
1
—
5
6
Green
3
Receive Data –
2
7
White/brown
4
—
7
8
Brown
4
—
8
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