3Com S26x, S27x, S24x installation manual Enclosure

	Hardware Components
Enclosure
Introduction
	This section provides detailed information about the parts of the PathBuilder S24x,
	26x, and 27x switch enclosure.
Front Panel
	The PathBuilder S24x, 26x, and 27x switch front panel (see Figure 1-6) has:
	• Three status LEDs
	• A 2-character numeric LED display
	• A RESET switch
Status LEDs
	The three status LEDs are:
	• Power (green) — When on, indicates that power is on and all DC voltages are
	within specifications.
	• Status (green) — When on, indicates that the PathBuilder S24x, 26x, and 27x
	switch node is executing either a power-up diagnostic or a software download.
	This LED is normally off.
	• Service (yellow) — When on, indicates a hardware failure. This LED is
	normally off.
Numeric LED
	The 2-character numeric LED display provides system diagnostic codes. When the
Display	Service LED is on, a 2-digit code on the numeric LED display corresponds to a
	certain event.
Reset Switch
	The RESET switch resets the node. Pressing the RESET switch is the equivalent of a
	power-up operation which clears all existing calls and brings down all links.
Power Supply
	The power supply is mounted at the top rear of the chassis. The AC switchable power
	supply can operate at a nominal 110 or a nominal 230 Volts. For information about
	maintaining and replacing the power supply, refer to Chapter 4, Maintenance.

Note

For this unit, the -48VDC Power Option is also available.

About the PathBuilder S24x, 26x, and 27x switch 1-11