Dell POWEREDGE 4300 Service Manual page 20

1-12 Dell PowerEdge 4300 Systems Service Manual
PWR1 To POWER1 connector on system board
PWR2 To POWER2 connector on system board
PWR3 Not used
FD To diskette drives and other devices in external
drive bays
HD_B/P To POWER connector on SCSI backplane board
The power-supply output voltages can be measured at the back (wire side) of
the connectors without being disconnected. In the following diagrams, volt-
ages for the PSPB PWR x connectors are shown as measured at the system
board; voltages for the PSPB FD connector are shown as measured at the
PSPB; voltages for the PSPB HD_B/P connector are shown as measured at the
SCSI backplane.
+5 VDC (red)
–5 VDC (white)
common (black)
common (black)
common (black)
1
SYS_PS_ON # (gray)
13 14 15 16 17
1
+5 VDC (red)
common (black)
+5 V_SENSE (red)
SENSE (black)
2
SYS_PWR_GOOD
(gray)
+5 VFP (violet)
1
Pin 13 — SYS_PS_ON# should measure between +4.75 and +5.25 VDC except when the
power button on the front panel is pressed, taking SYS_PS_ON# to its active-low state.
2
Pin 5 — SYS_PWR_GOOD should measure between +4.75 and +5.25 VDC when the power
supply is operating to indicate that all power-supply output voltages are within the ranges
specified in Table 1-1.
18 19 20 21 22 23 24
2 3 4 5 6 7 8 9
+5 VDC (red)
+5 VDC (red)
NC_TFSC (gray)
+5 VDC (red)
+3.3 VDC (orange)
common (black)
10 11 12
+3.3 VDC (orange)
+3.3 V_SENSE (orange)
common (black)
common (black)
–12 VDC (blue)
+12 VDC (yellow)