Instruction manual

1. Components Overview
45
1.2.2 PS-D01
Power supplies for -48 VDC are described below.
Figure 1-46 External Appearance shows its appearance. For the LEDs in the figure, see Table 1-21 LED
Indications.
Figure 1-46 External Appearance
(1) POWER LED
(2) ALM1 LED
(3) ALM2 LED
(4) Connector
(5) Cable connector
(6) Power switch
(7) Handle
(8) Screw: Thumb screw
Table 1-21 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.
*1
Off : Powered-off.
(2) ALM1 Red LED Indicates an internal power supply
failure.
Lit in red : A failure is
detected.
*1
Off : Normal.
(3) ALM2 Red LED Indicates a failure with the
integrated fan.
Lit in red : A failure is
detected.
*1
Off : Normal.