1-6 Dell OptiPlex N Systems Service ManualC omputer ServiceThe following subsections provide service-related information about thecomputer.Computer Power SupplyThe Dell OptiPlex N computers have an 80-W computer power supply. Thepower supply can operate from an AC power source of 115 VAC at 60 Hz or230 VAC at 50 Hz. The computer power supply provides the DC operating volt-ages 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 connectorsmust be connected to their corresponding power input connectors on the systemboard and hard-disk drive..Table 1-1. DC Voltage RangesVoltage Range Maximum Output Current1+3.3 VDC +3.135 to +3.465 VDC 6.0 A1+5 VDC +4.75 to +5.25 VDC 12.0 A1+12 VDC +11.40 to +12.60 VDC 1.0 A2–12 VDC –10.80 to –13.20 VDC 0.5 A+5 VFP3 +4.75 to +5.25 VDC 1.2 A1 The combined load on the +5-VDC and +3.3-VDC outputs should not exceed 65 W.2 Withstands surges of up to 3.0 A to support disk start-up operations.3 VFP (volts flea power) — sometimes called “standby power.”
