Dell OptiPlex GX1p Manual de usuario descargar pdf (Pagina 43)

System Overview 1-31

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The power-supply output voltages can be measured at the back (wire side) of

the connectors without disconnecting them. Figures 1-23 through 1-25 show

the wire side of the connectors.

Pin 11 — PSON# should measure between +4 and +5 VDC except when the power button

on the front panel is pressed, taking PSON# to its active-low state.

Pin 19 — Thermal fan-speed control (TFSC) is a power-supply input signal used to control

the power-supply fan speed.

Pin 5 — PWRGOOD should measure between +4 and +5 VDC when the power supply is

on to indicate that all power-supply output voltages are within the ranges specified in

Table 1-5.

+3.3 VDC +3.14 to +3.47 VDC

6.0 A

+5 VDC +4.75 to +5.25 VDC

12.0 A

+12 VDC +11.40 to +12.60 VDC

1.0 A

–12 VDC –10.80 to –13.20 VDC 0.5 A

+5 VFP

+4.75 to +5.25 VDC 1.2 A

The combined load on the +5-VDC and +3.3-VDC outputs should not exceed 65 W.

Withstands surges of up to 3.0 A to support disk start-up operations.

VFP (volts flea power) — sometimes called “standby power.”

PWRGOOD

(orange)

–12 VDC (blue)

+12 VDC (yellow)

+5 VFP (purple)

common (black)

2 3 4 5 6 7 8 9 10

12 13 14 15 16 17 18 19 20

+5 VDC (red)

common (black)

PSON#

(gray)

common (black)

open

TFSC

(brown)

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 169 170

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Dell OptiPlex GX1p Manual de usuario Pagina 43