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Installing MX2000 Router DC Power Supply Modules (240 V China)
To install an MX2000 DC PSM (240 V China):
1. Verify that the power switches on all PSMs are in the off (O) position.
2. On the PSM, slide the plastic cover away from the input mode switch to expose the dual DIP switches.
Move the input mode DIP switch 0 (left switch) to the ON position for the bottom feed INP0 (expected
to be connected), and DIP switch 1 (right switch) to the ON position for the top feed INP1 (expected
to be connected). If both DIP switches 0 and 1 are turned to the ON position, then both top and bottom
feeds are expected to be connected, (see
In addition, a PSM failure triggers the alarm LED on the craft interface.
NOTE:
The DIP switches are only used to indicate presence of a feed. If both feeds are
present, power is always drawn from feed 0. Power will be drawn from feed 1 only if feed 0
fails.
Figure 131: Selecting DC Power (240 V China) Subsystem Feed Redundancy
3. Using both hands, grasp the handle and slide the PSM straight into the chassis until the PSM is fully
seated in the chassis slot. Tighten the two captive screws (see
10 lb-in. (1.13 Nm) to 12 lb-in. (1.35 Nm) of torque to each screw. Do not overtighten the screws.
Figure 131 on page
323).
Figure 132 on page
324). Apply between
323
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