User Service Guide, Third Edition - HP Integrity cx2620 Server

copper conductor be used for connecting DC power. The wire style and insulation type must be
appropriately rated for the application.
CAUTION: Do not use aluminum conductors. Aluminum has a coefficient of expansion that
differs significantly from that of other metals commonly used in power hardware. Because of
this difference, use of aluminum conductors can cause connector hardware to loosen, overheat,
and fail.
The terminal lugs used to connect DC power must be rated to handle the expected load of
15A/PSU. The width of the lug can be no larger than 0.3 inches (0.762 cm).
Power States
The server has three power states:
• Standby power
• Full power
• Off
Plug the power cord into the appropriate receptacle on the rear of the chassis to achieve the
standby power state; the front panel Power button is not turned on. Full power occurs when the
power cord is plugged into the appropriate receptacle, and the Power button is activated. In the
off state, the power cords are not plugged in.
Table 3-3 lists the server power states.
Table 3-3 Power States
DC Power AppliedAC Power
Applied
Front Panel Power Button
Activated
Power Cable Plugged Into
Receptacle
Power States
YesNoNoYesStandby power
YesNoYesYesFull power
NoNoNoNoOff
Connecting Power Cables and Console Cables
IMPORTANT: HP recommends that a DC electrician should be involved in this procedure.
This procedure describes how to connect the following:
• DC power supply cables
• M Cable (DB 25)
• Core I/O cards
• RS-232 cable (female to female)
Connecting Cables 83