System Overvie w 1-13

1

Pin 13 — PSON# should measure betw een +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

comm on ( bl ack)
+5 VDC (red)
+5 VDC (red)
TFSC
2
(brown)
PSON#
1
(gray)
common (b lack)
common (b lack)
common (b lack)
–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)
comm on ( bl ack)
comm on ( bl ack)
+5 VFP (purple)
PWRGOOD
3
(orange)
comm on ( bl ack)
+5 V DC (red)
comm on ( bl ack)
-12 VDC (blue)
6
+5 VDC (red)
789101112
+3.3 VDC (blue/white)
1234 +5 VDC (red)
common (black)
common (black)
+12 VDC (y ellow)
1234
+5 VDC (red)
comm on ( bl ack)
comm on ( bl ack)
+12 VDC (yellow)

P3, P4, P5 P6