Juniper MX2020 Hardware Manual page 454

NOTE: The AC/DC settings and the screw locations are the same for MX2008, MX2010,
and MX2020 routers.
Figure 208: Removing the MX2000 Router Adjustment Bar Locking Screws
7. Insert a screw driver into each adjustment slot and slide the adjustment bar to the right for DC
configurations or to the left for AC configurations. Refer to Figure 209 on page 435.
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