Brand: Cisco
Category: Networking
Document Type: Installation Guide
Language: EN
Available Languages: EN , ES
Installation Guide for 700-Watt DC-Input Power Supply
Uploaded: Sept. 12, 2025, 4:14 a.m.
Manual Publish Date: 1995-01-01
Warranty Information
Refer to the Cisco 7000 Hardware Installation and Maintenance or Cisco 7507 Hardware Installation and Maintenance publications for warranty information.
The DC-input power supply is a modular option for Cisco 7000 and Cisco 7507 routers. Installing a second power supply provides redundant power, allowing for load-sharing and hot-swapping. The system maintains uninterrupted operation when one supply is removed, as the remaining supply immediately ramps up to full power. The power supplies are self-monitoring for temperature and internal voltages, with an internal fan for cooling. Safety interlocks prevent removal when the unit is on.
Troubleshooting and error codes
| Symptom/LED | Possible Cause | Corrective Action |
|---|---|---|
| Out fail LED is ON | Power supply DC-output failure (loss of DC-input power or actual power supply failure) | If the out fail LED goes on, move the power supply to the other bay if possible and turn the power switch ON. If LEDs go on properly, suspect a faulty backplane power connector. If the out fail LED still goes on, suspect a power supply failure or adverse environmental condition. |
| Out fail LED is ON (two supplies installed, one fails) | The power supply or DC source for that supply is faulty. | Assume that the power supply or DC source is faulty. |
| Out fail LED is ON (two supplies, same DC source) | The DC source is faulty or an overvoltage/overtemperature condition. | Suspect that the DC source is faulty or that an overvoltage or overtemperature condition is causing the power supplies to shut down. |
| Out fail LED is ON (two supplies, separate DC sources) | An overvoltage or overtemperature condition. | Assume that an overvoltage or overtemperature condition is causing the power supplies to shut down. |
| Power supply switch resists when turning ON | Power supply not fully inserted. | Turn the power switch fully counterclockwise to OFF (O), pull the power supply out about 2 inches, then push it firmly back into the slot. Tighten the captive installation screw before proceeding. |