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System Overview 1-13
1
Pin 13 — 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 22 — Thermal fan-speed control (TFSC) is a power-supply input signal used to
control power-supply fan speed in special applications.
3
Pin 5 — PWRGOOD should measure between +4 and +5 VDC when the power
supply is operating to indicate that all power-supply output voltages are within the
ranges specified in Table 1-1.
13 14 15 16 17
P1
common (black)
+5 VDC (red)
+5 VDC (red)
TFSC
2
(brown)
PSON#
1
(gray)
common (black)
common (black)
common (black)
–5 VDC (white)
+3.3 VDC (blue/white)
18
–5 VDC (white)
19 20 21 22 23 24
+5 VDC (red)
12345
+12 VDC (yellow)
+3.3 VDC (blue/white)
common (black)
common (black)
+5 VFP (purple)
PWRGOOD
3
(orange)
common (black)
+5 VDC (red)
common (black)
-12 VDC (blue)
6
+5 VDC (red)
789101112
+3.3 VDC (blue/white)
1234
+5 VDC (red)
common (black)
common (black)
+12 VDC (yellow)
1234
+5 VDC (red)
common (black)
common (black)
+12 VDC (yellow)
P3, P4, P5
P6