Cisco 3900 series User Manual

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Cisco 2900 Series and 3900 Series Hardware Installation Guide
OL-18712-03
Chapter 5 Installing and Upgrading Internal Modules and FRUs
Installing and Removing ISMs
Figure 5-11 Installing a DRAM DIMM
Step 8 Replace the chassis cover. For Cisco 2900 series ISRs, see the “Removing and Replacing the Chassis
Cover” section on page 5-4. For Cisco 3900 series ISRs, see the “Removing and Replacing the Services
Performance Engine” section on page 5-6.
Installing and Removing ISMs
A Integrated Service Modules (ISMs) plug into the ISM slot on the motherboard. ISMs are sold as a
spare part, and they have a label that identifies the ISM type. See the following sections for ISM
installation tasks:
• Software Requirement for ISMs, page 5-17
• Locating an ISM, page 5-17
• Removing an ISM, page 5-17
• Installing an ISM, page 5-18
• Verifying ISM Installation, page 5-20
Caution Always wear an ESD-preventive wrist strap and ensure that it makes good contact with your skin when
you remove or install an ISM. Connect the equipment end of the wrist strap to the metal part of the
chassis.
Caution Handle ISMs by the edges only. ISMs are ESD-sensitive components and can be damaged by
mishandling.
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Cisco 3900 series Specifications

General

Brand	Cisco
Model	3900 series
Category	Network Router
Language	English