Juniper QFX5120 Series Hardware Manual page 59

Figure 34: DC Power Supply Faceplate on a QFX5120-48Y Switch
1 Input LED
—
2 Output LED
—
CAUTION:
The same polarity terminal can be wired together from the same source to provide an
additional current path in a higher power chassis. Do not connect the terminals to different
sources.
Table 23 on page 61 describes the LEDs on the DC power supplies.
Table 23: DC Power Supply LEDs on a QFX5120-48Y Switch
Name Color
In Unlit
Green
Out Unlit
Green
The V+ terminals are shunted internally together, as are the V- terminals.
State
Off
On steadily
Off
On steadily
3 Fault LED
—
Description
The power supply is disconnected from
power, or power is not coming into the power
supply.
Power is coming into the power supply.
The power supply is disconnected from
power, or the power supply is not sending out
power correctly.
The power supply is sending out power
correctly.
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