Instruction manual

1. Components Overview

1.2 Power Supply (PS)

The power supply is a system to supply electrical power to a power redundancy model, which is mounted into a power

supply slot in the switch.

There are two types of power supplies: 100/200 V AC and -48 V DC input power supplies.

1.2.1 PS-A01

Power supplies for 100 and 200 V AC are described below.

Figure 1-45 External Appearance shows the appearance of a power supply. For the LEDs in the figure, see Table

1-20 LED Indications.

Figure 1-45 External Appearance

(1) POWER LED

(2) ALM1 LED

(3) ALM2 LED

(4) Cable clamp

(5) AC power connector

(6) Power switch

(7) Handle

(8) Screw: Thumb screw

Table 1-20 LED Indications

*1 In some cases of a failure, none of the POWER, ALM1 and ALM2 LEDs are turned on or only the ALM2 LED is lit.

Number Name Type Description Details

(1) POWER Green LED Indicates the status of the power

supply.

Lit in green : Powered-on.

Off : Powered-off.

(2) ALM1 Red LED Indicates an internal power supply

failure.

Lit in red : A failure is

detected.

Off : Normal.

(3) ALM2 Red LED Indicates a failure with the

integrated fan.

Lit in red : A failure is

detected.

Off : Normal.