Removing an MX960 AC Power Supply
Before you remove a power supply, be aware of the following:
 | Note: The minimum number of power supplies must be present in the router at all times. |
 | Caution: To maintain proper cooling and prevent thermal shutdown of the operating power supply unit, each power supply slot must contain either a power supply or a blank panel. If you remove a power supply, you must install a replacement power supply or a blank panel shortly after the removal. |
| Note: After powering off a power supply, wait at least 60 seconds before turning it back on. |
To remove an AC power supply (see Figure 1):
- Switch off the dedicated customer site circuit breaker for the power supply, and remove the power cord from the AC power source. Follow the ESD and disconnection instructions for your site.
- Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
- Move the AC input switch in the chassis above the power supply to the off (O) position.
- While grasping the handle on the power supply faceplate with one hand, use your other hand to pull the spring-loaded locking pin in the release lever away from the chassis and turn the release lever counterclockwise until it stops.
- Let go of the locking pin in the release lever. Ensure that the pin is seated inside the corresponding hole in the chassis.
- Pull the power supply straight out of the chassis.
Warning: Do not touch the power connector on the top of the power supply (see Figure 2). It can contain dangerous voltages.
Figure 1: Removing an AC Power Supply
Figure 2: Top of the Power Supply Showing Midplane Connector
