6-2
Hardware Installation Guide for Cisco 4000 Series Integrated Services Routers
OL-32185-02
Chapter 6 Install and Upgrade Internal Modules and FRUs
Safety Warnings
• Install and Remove SFP Modules, page 6-71
• Remove and Replace Cisco 4000 Series ISRs Power Supplies, page 6-40
Caution Read the Safety Warnings section and disconnect the power supply before you replace any module.
See the “Modules Supported” section on page 6-4 for instructions on how to install and replace internal
components.
Safety Warnings
Warning
Read the installation instructions before connecting the system to the power source.
Statement
1004
Warning
Only trained and qualified personnel should be allowed to install, replace, or service
this equipment.
Statement 1030
Warning
This equipment must be installed and maintained by service personnel as defined by AS/NZS
3260. Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The
telecommunications lines must be disconnected 1) before unplugging the main power connector
or 2) while the housing is open, or both.
Statement 1043
Warning
Before working on a system that has an on/off switch, turn OFF the power and unplug the power
cord.
Statement 1
Warning
This unit might have more than one power supply connection. All connections must be removed
to de-energize the unit.
Statement 1028
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment
in the absence of a suitably installed ground conductor. Contact the appropriate electrical
inspection authority or an electrician if you are uncertain that suitable grounding is available.
Statement 1024
Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the unit
is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When
detaching cables, detach the end away from the unit first.
Statement 1026
Warning
Before opening the unit, disconnect the telephone-network cables to avoid contact with
telephone-network voltages.
Statement 1041
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