1-13
Cisco 7204 Installation and Configuration Guide
OL-5101-02
Chapter1 Product Overview Physical Description
Figure1-9 I/O Controller—without Fast Ethernet Port
Table 1 -3 lists the I/O controller memory components.
Depending on whether the Fast Ethernet port is present, up to five LEDs on the I/O controller faceplate
indicate system status; two additional LEDs indicate the status of the Fl ash m em ory c ards inst al led i n
either PCMCIA slot.
Figure 1-10 shows the LEDs on the I/O controller with the Fast Ethernet port that is equipped with a
single MII port. Figure 1-11 shows the LEDs on the I/O controller with the Fast Ethernet port that is
equipped with an MII port and an RJ-45 port. Figure 1-12 shows the LEDs on the I/O controller without
the Fast Ethernet port. Table 1- 5 lists I/O controller LEDs and their functions. To use the LEDs for
troubleshooting the I/O controller, refer to the “Identifying Startup Problems” section on page 5-3 in
“Chapter5, “Troubleshooting the Instal lati on.”.”
A CPU reset button is located next to the IO power OK LED or the auxiliary port on the I/Ocontroller
faceplate. The CPU reset button resets the entire system.
Caution To prevent system errors and problems, use the CPU reset button only at the direction of yo ur se rvice
representative.
H7400
AUX
CONSOLE
Midplane
connectors
Temperature
sensor
Flash SIMM [U99]
NVRAM [U41]
Temperature
sensor
Boot ROM [U20]
PC Card slots
Console
port
Captive
installation
screw LED and
CPU reset
button
Auxiliary
port
PCMCIA
EJECT
SLOT 0
CPU RESET
IO POWER
OK
SLOT 1
INPUT/OUTPUT CONTROLLER
ENABLED
Table1-4 I/O Controller Memory Components
Memory Type Size Quantity Description Location
Boot ROM 256 KB 1 DIP-type integrated circuit for the ROM
monitor program U20
Flash SIMM
Flash memory
card
4 MB
8 to 20 MB
1
Up to 2
Contains the default boot helper image
Contains the default Cisco IOS image
U99
PCMCIA
slot 0 and
slot 1
NVRAM 128 KB 1 Nonvolatile EPROM for the system
configuration file U41