Cisco 7120 Series User Manual page 4

Product Description
Figure 1-3
ESD receptacle
Service module
5
RCVR
I
EN
Fixed WAN port
Figure 1-4
ESD receptacle
Service module
5
I E3 TX
EN RX
CEL CAR ALM
Fixed WAN port
Cisco 7120 series routers have one power supply with one AC-input power receptacle; Cisco 7140 series
routers have two power supplies with two AC-input power receptacles for power load-sharing and
redundancy. A modular power cable connects each AC-input power supply to the site AC power source.
The router's main power switch is located next to the AC-input power receptacles.
Cisco 7140 series routers will operate with power connected to either of the two power supplies. The
second AC-input power supply simply enables power load-sharing and redundancy. There is no primary
or secondary power supply for Cisco 7140 series routers.
We recommend powering the router from a 15A receptacle at the power source.
On the side of each chassis are two chassis ground receptacles that provide a chassis ground connection
for a two-hole grounding lug. On the back of the chassis, there is a receptacle for electrostatic discharge
(ESD) equipment. (See
Four internal fans draw cooling air into the chassis (back to front) and across internal components to
maintain an acceptable operating temperature. There are four environmental sensors for monitoring the
cooling air as it leaves the chassis. For more information on environmental monitoring, see the
"Environmental Monitoring and Reporting Functions" section on page
Cisco 7100 Series VPN Router Installation and Configuration Guide
1-4
Cisco 7120 Series—Back View
PC Card
slots (covered)
Modular port adapter
SLOT 0
ACT ACT
LNK LNK
XMTR
RCLK FERF RL FE 0 / 0 FE 0 1
0 / 1
E3 TX
RX
AIS OOF LL
Fixed LAN ports Console and
auxiliary ports
Cisco 7140 Series—Back View
Modular port adapter
SLOT 0
ACT
ACT
LNK LNK
RX
FE 0 / 0
FE 0 / 1 0 1
E3 TX
RX
EN RX
CEL CAR ALM
PC Card
slots (covered)
Fixed LAN ports Console and
auxiliary ports
Figure 1-3
SLOT 1
PWR
0
SYS
CONS
AUX RDY
2
7120 - T3
Power supply Grounding
receptacles
AC OK
DC OK
OTF
SLOT 1
PWR
0
SYS AC OK
CONS
AUX RDY
DC OK
OTF
2
7140 - 2AE3
100-24 0Vac 50/60H z
5-2.5A 525W
Power supply Grounding
receptacles
and Figure 1-4.)
Chapter 1 Overview
1-39.
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