Juniper MX2020 Hardware Manual page 139

current. Move the input mode DIP switch to the on or off position to determine the power supply feeds
(see Table 32 on page 113
the craft interface. Each PDM has an LED per feed indicating whether the feed is active or not, or whether
the feed is connected properly, see
Specifications" on page
Table 33: DIP Switch Positions on the DC PSM
Left Switch Position
Off
On
Off
On
Figure 53: Selecting Input Feed on the DC Power Supply Module (240 V China)
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MX2000 DC Power Distribution Module (240 V China) Description | 109
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Site Electrical Wiring Guidelines for MX Series Routers
and Figure 51 on page
"MX2000 Router DC (240 V China) Power Subsystem Electrical
207.
Right Switch Position
Off
Off
On
On
114). In addition, a PSM failure triggers the alarm LED on
Input Source
None
Input 0 (INP0)
Input 1 (INP1)
Both Input 0 and Input 1
116