User Manual

Power Supplies
M40 Internet Router Hardware Guide
22
DC Power Supply
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.
Figure 9: DC Power Supply
Table 9: DC Power Supply Electrical Specifications
Power Supply LEDs
Table 10 describes the LEDs on both AC and DC power supplies.
Table 10: States for Power Supply LEDs
1038
Handle Extractor/inserter
Captive
screw
Safety interlock lever
Status LEDs
Power switch
Grounding studs
Power terminals
Description Specification
Maximum power output 1500 W
Input voltage –40 through –75 VDC operating range
Input current rating 35A @ 48V
Output voltage +3.3V, +5V, +2.5V, +12V, +24V
Label Color State Description
OK Green On steadily Power supply is functioning normally, input is occurring, outputs
are within range, temperature is within range, and fans are
operational.
FAIL Red On steadily Power supply has failed.