Dell PowerEdge 4100 Service Manual - Page 13

System Unit - power supply

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System Unit The following subsections provide service-related information about the system unit. System Power Supply The 500-W system power supply can operate from an AC power source of 90 to 265 VAC at 50 or 60 Hz. When the power-supply paralleling board is installed, the power supplies are hot-pluggable. When the red LED on the power supply is lit (except during power-up), it indicates that the power supply has failed (see Figure 1-5). When the green LED is lit, it indicates that +5 VDC is on. The system power supply provides the DC operating voltages and currents listed in Table 1-1. NOTE: The power supply produces DC voltages only under its loaded condition. Therefore, when you measure these voltages, the DC power connectors must be connected to their corresponding power input connectors on the system board or drives. . Table 1-1. DC Voltage Ranges Voltage Range Maximum Output Current 1 +3.3 VDC +3.135 to +3.465 VDC 15.0 A +5 VDC +4.90 to +5.25 VDC 50.0 A +12 VDC +11.40 to +12.60 VDC 25.0 A -12 VDC -10.80 to -13.20 VDC 0.3 A -5 VDC -4.50 to -5.50 VDC 0.3 A +5 VFP 2 +4.85 to +5.36 VDC 1 Maximum continuous DC output power shall not exceed 500 W. 2 VFP (volts flea power) - sometimes called "standby power." 0.25 A System Overview 1-11

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System Overview
1-11
S
ystem Unit
The following subsections provide service-related information about the system
unit.
System Power Supply
The 500-W system power supply can operate from an AC power source of 90 to
265 VAC at 50 or 60 Hz. When the power-supply paralleling board is installed,
the power supplies are hot-pluggable. When the red LED on the power supply is
lit (except during power-up), it indicates that the power supply has failed (see
Figure 1-5). When the green LED is lit, it indicates that +5 VDC is on. The sys-
tem power supply provides the DC operating voltages and currents listed in
Table 1-1.
NOTE: The power supply produces DC voltages only under its loaded condi-
tion. Therefore, when you measure these voltages, the DC power connectors
must be connected to their corresponding power input connectors on the system
board or drives.
.
Table 1-1.
DC Voltage Ranges
Voltage
Range
Maximum Output
Current
1
+3.3 VDC
+3.135 to +3.465 VDC
15.0 A
+5 VDC
+4.90 to +5.25 VDC
50.0 A
+12 VDC
+11.40 to +12.60 VDC
25.0 A
–12 VDC
–10.80 to –13.20 VDC
0.3 A
–5 VDC
–4.50 to –5.50 VDC
0.3 A
+5 VFP
2
+4.85 to +5.36 VDC
0.25 A
1
Maximum continuous DC output power shall not exceed 500 W.
2
VFP (volts flea power) — sometimes called “standby power.”