Setting the Input Mode Switch on a Three-Input 240-A DC Power Supply for a T640 Router
NOTE: Do not set the input mode switch if the power supply is installed in
the chassis. If the power supply is already installed, you must disconnect all
cables and remove the power supply before setting the input mode switch.
To set the input mode switch (see Figure 178 on page 360) to 2-INPUT mode:
1. Using a screwdriver, loosen the captive screw holding the metal cover over the input
mode switch (see Figure 178 on page 360).
2. Rotate the metal cover away from the input mode switch to expose the switch.
3. Check the setting of the input mode switch. Use a flashlight, if necessary. In 2-INPUT
mode, the switch must be located all the way to the right.
4. If the input mode switch is not set correctly, use a sharp, nonconductive object to slide
the switch all the way to the right to set the power supply to 2-INPUT.
CAUTION: Do not use a pencil, becausefragmentscan breakoff and cause
damage to the power supply.
5. Rotate the metal cover over the input mode switch, and use a screwdriver to tighten
the captive screw.
Figure 178: Three-Input 240-A DC Power Supply
Copyright © 2017, Juniper Networks, Inc.360
T640 Core Router Hardware Guide
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