Cisco 3745 Installation Guide Page 27
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Installing Field-Replaceable Units in Cisco 3745 Routers
78-14308-02
Troubleshooting
Troubleshooting
Check the following items to help isolate problems with the power supply installation:
• With the power switch on, is the corresponding system power supply LED on the front panel on?
See Figure 19 for LED status indicators.
–
If not, check the AC or DC input, AC or DC source, router circuit breaker, and the power supply
cable (AC) or power supply wiring (DC).
–
If the power LED is still off, the problem might be a power supply failure.
Figure 19 LED Indicators on the Cisco 3745 Router
• Does the router shut down after being on for a short time?
–
Check the fans. If the fans are not working, the router overheats and shuts itself down.
–
If the fans are not working, check the power supply connections to the fans.
–
Ensure that the chassis intake and exhaust vents are clear.
–
Check the environmental site requirements in your router installation and configuration guide.
72081
Cisco 3700 SERIES
SYS LED
ACT LED
SYS PS1 LED
-48V PS1 LED
-48 PS2 LED
SYS PS2 LED
- Corporate Headquarters: 1
- General Safety Guidelines 2
- Safety with Electricity 2
- Notes, Cautions, and Warnings 5
- Varoitus 6
- Attention 6
- Figyelem! 6
- Avvertenza 7
- Advarsel 7
- ¡Advertencia! 7
- Varning! 8
- FCC Class A Compliance 9
- Required Tools and Equipment 9
- Regulatory Compliance and 10
- Safety Information 10
- 78-14308-02 11
- Access door 14
- Fan tray 14
- Power supply 15
- Connecting DC-Input Power 18
- Wiring Procedure 19
- Removing the Mainboard Tray 21
- Installing the Mainboard Tray 22
- Removing the I/O Board 22
- Installing the I/O Board 24
- Powering On the Router 26
- Cisco 3700 SERIES 27
- Obtaining Documentation 28
- Documentation Feedback 29
- Cisco.com 29
- Technical Assistance Center 29
- Cisco TAC Website 30
- Cisco TAC Escalation Center 30
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