3Com corebuilder 3500 Implementation Manual page 25

In addition, each module and field-replaceable component contains a
guide:
CoreBuilder 3500 System Processor Removal and Replacement Guide
Provides overview information and removal and replacement
instructions for the CoreBuilder system processor.
Module Installation Guides
An overview, LED status information, and installation instructions for
each module.
GBIC Transceiver Installation Guide
Installation instructions for the Gigabit Ethernet Interface Converter
transceiver.
CoreBuilder 3500 Power Supply Assembly Removal and Replacement
Guide
Overview information and removal and replacement instructions for
the CoreBuilder power supplies.
CoreBuilder 3500 Fan Tray Removal and Replacement Guide
Overview information and removal and replacement instructions for
the fan tray.
PCMCIA Flash Card User Guide
Information on using the PCMCIA card to save and restore system
configuration settings.
Blank Faceplate Installation Guide
Instructions for covering empty slots with the blank faceplate.
CoreBuilder 3500 Documentation 25