Juniper PTX5000 Hardware Manual page 413

NOTE: After powering off a PDU, you must wait at least 60 seconds before turning it back
on.
4. Make sure that the voltage across the AC power cord is 0 V and that there is no chance that the AC
power cord might become active during the removal process. Verify that the AC In (~) LED on the
PDU faceplate is off.
5. Remove the power supply modules (PSMs) in the front of the chassis from the PDU to be removed
(see Figure 38).
a. Loosen the captive screws on the door covering the PSMs and open the door.
b. Press down the locking tab and then pull out the PSM by using the ejector handle.
c. Grasp the ejector handle and pull to eject the PSM. Slide the PSM halfway out of the chassis.
d. Place one hand underneath the PSM to support it and slide it completely out of the chassis.
e. Repeat these steps for the remaining PSMs in the PDU.
Figure 203: Removing the High Capacity AC Power Supply Modules
WARNING: Each High Capacity AC PSM weighs approximately 9.8 lb (4.5 kg). Be
prepared to support the full weight of the PSM as you remove it from the PTX5000.
6. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to
one of the ESD points on the chassis at the back of the PTX5000.
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