Dc Power Supply; Power Supply Leds - Juniper M40 Hardware Manual

Power Supplies

DC Power Supply

Figure 9: DC Power Supply
Table 9: DC Power Supply Electrical Specifications

Power Supply LEDs

Table 10: States for Power Supply LEDs
22 M40 Internet Router Hardware Guide
A DC-powered router has two load-sharing DC power supplies, located at the bottom rear of
the chassis, as shown in Figure 2. Each power supply has an internal circuit breaker. Figure 9
shows the power supply and Table 9 lists electrical specifications. For information about the
LEDs on the power supply, see "Power Supply LEDs" on page 22.
Handle
Captive
screw
Power terminals
Power switch
Status LEDs
Safety interlock lever
Description
Maximum power output
Input voltage
Input current rating
Output voltage
Table 10 describes the LEDs on both AC and DC power supplies.
Label Color State
OK Green On steadily
FAIL Red On steadily
Extractor/inserter
Grounding studs
Specification
1500 W
–40 through –75 VDC operating range
35A @ 48V
+3.3V, +5V, +2.5V, +12V, +24V
Description
Power supply is functioning normally, input is occurring, outputs
are within range, temperature is within range, and fans are
operational.
Power supply has failed.