Pin Assignments For The Dc Power Connectors; Figure 1-7. Dc Power Connector P1; Figure 1-8. Dc Power Connectors P2 (Midsize Computer) - Dell OptiPlex Gs Service Manual

1-10 Dell OptiPlex Gs and Gs+ Systems Service Manual

Pin Assignments for the DC Power Connectors

The power-supply output voltages can be measured at the back (wire side) of
the connectors without disconnecting them. Figures 1-7 through 1-9 show the
wire side of the connectors.
–5 VDC (white)
common (black)
common (black)
common (black)
1
PSON# (grey)
P1
+5 VDC (red)
common (black)
+5 VDC (red)
common (black)
2
PWRGOOD (orange)
1
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.
2
Pin 5 — PWRGOOD should measure between +4 and +5 VDC when the power supply is on
and operating to indicate that all power-supply output voltages are within the ranges speci-
fied in Table 1-1.
3
Pin 19 — Thermal fan-speed control (TFSC) is a power-supply input signal used to control
the power-supply fan speed.

Figure 1-7. DC Power Connector P1

P2, P3, P5, P6
1 2 3 4
Figure 1-8. DC Power Connectors P2 (Midsize Computer), P3, P4,
P5, and P6 (Midsize Computer)
11 12 13 14 15 16 17
1 2 3 4 5 6 7
P4
+5 VDC (red)
common (black)
common (black)
+12 VDC (yellow)
+5 VDC (red)
+5 VDC (red)
+5 VDC (red)
3
TFSC (brown)
+5 VDC (red)
18 19 20
8 9 10
common (black)
common (black)
–12 VDC (blue)
+12 VDC (yellow)
+5 VFP (purple)
1 2 3 4
+12 VDC (yellow)
common (black)
common (black)
+5 VDC (red)