Device Power Components (SSG 550M Only) 53
Figure 25: Sliding AC/DC Power Supply Ejector Tab
5. Grasp the handle on the power supply faceplate, and pull firmly to start
removing the power supply. Slide it halfway out of the chassis as shown in
Figure 25.
6. Place one hand underneath the power supply to support it, then slide it
completely out of the chassis.
To remove a DC PSU, perform the following steps:
1. Attach an ESD grounding strap to your bare wrist, and connect the strap to the
ESD point on the chassis or to an outside ESD point if the device is
disconnected from earth ground.
2. Loosen the retaining screws on the terminal block.
3. Remove the feed wires.
4. With your thumb, slide the ejector tab on the power supply faceplate to the
right, and hold it in place to unlock the power supply.
5. Grasp the handle on the power supply faceplate, and pull firmly to start
removing the power supply. Slide it halfway out of the chassis as shown in
Figure 25.
6. Place one hand underneath the power supply to support it, then slide it
completely out of the chassis.
Metal
ejector tab
NOTE: If you are not reinstalling a power supply into the emptied slot, install a blank
power-supply faceplate over the slot.
WARNING: Before removing a DC PSU, you must shut off current to the DC feed
wires that lead to the PSU.
CAUTION: Ensure that the DC cables do not touch the two screws on the chassis
that are adjacent to the terminal block. Contact between the DC cables and the
chassis screws will cause a circuit failure.
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