Cisco 7010 Replacement Instructions Manual page 4

Product Overview
Frequency
Power distribution
On the noninterface processor end of the power supply, two handles provide grip points for pulling
the power supply out of the chassis. (See Figure 2.) Two Phillips screws secure the power supply to
the chassis interior. Inside the power supply, two small fans draw cooling air through the power
supply interior. The air flows in one side of the supply and out the other side, following the same
direction as the chassis cooling air.
The power supply delivers DC power to the internal components through a wiring harness that plugs
into a polarized receptacle to the noninterface processor side of the backplane. An aluminum cover
shields the harness and power connection. The backplane then distributes the DC voltages to the fan
tray, arbiter, and interface processor bus connectors.
The AC power receptacle, power on/off switch, and DC OK status LED are on the opposite
(interface processor) end of the power supply, and are accessible through cutouts in the chassis
below the processor slots. (See Figure 1.) A modular power cable connects the power supply to the
site power source. A cable retention clip on the power supply AC receptacle prevents the cable from
being pulled out accidentally. The rocker-type on/off switch turns the power supply on and starts the
system. Figure 3 shows a detail view of the interface processor end of the power supply.
Figure 3
On/off switch
AC receptacle
Cable retention
clip
The green DC OK LED indicates the status of the power supply and internal DC voltages. The DC
OK LED stays on when all of the following conditions are met:
•
•
•
If the AC source power or any of the internal DC voltages exceeds allowable tolerances, the DC OK
LED goes off and the system environmental monitor messages indicate the line that is out of
tolerance. Because the RP (which uses +5, +12, -12 VDC), and the fan tray (which uses +24 VDC)
are both required for operation, the system will probably shut down if any internal voltages reach an
out-of-tolerance state.
In addition to the environmental monitoring performed by the system software, the power supply
monitors its own temperature and internal voltages. If the supply detects an overvoltage or
overtemperature condition, it shuts down to avoid damage to the power supply or other system
components.
4 600W AC-Input Power Supply and Fan Tray Replacement Instructions
50 to 60 Hz
70A maximum @ +5 VDC, 15A maximum @ +12 VDC, 3A maximum @ –12
VDC, and 5A maximum @ +24 VDC
AC-Input Power Supply—Interface Processor End
Power supply is on and receiving 100 to 240 VAC, 50 to 60 Hz source power
Power supply is providing the +5, +12, -12, and +24 VDC to internal components
All internal DC voltages are within tolerance
DC OK LED