Dell PowerEdge 4300 Dell PowerEdge 4300 Systems Service Manual - Page 20

To POWER connector on SCSI backplane board - power supply pin out

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PWR1 PWR2 PWR3 FD HD_B/P To POWER1 connector on system board To POWER2 connector on system board Not used To diskette drives and other devices in external drive bays 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, voltages for the PSPB PWRx 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) +5 VDC (red) +5 VDC (red) common (black) common (black) NC_TFSC (gray) +5 VDC (red) common (black) SYS_PS_ON #1 (gray) +3.3 VDC (orange) common (black) 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 +5 VDC (red) +3.3 VDC (orange) common (black) +3.3 V_SENSE (orange) +5 V_SENSE (red) SENSE (black) SYS_PWR_GOOD2 (gray) +5 VFP (violet) common (black) common (black) -12 VDC (blue) +12 VDC (yellow) 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. 1-12 Dell PowerEdge 4300 Systems Service Manual

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1-12
Dell PowerEdge 4300 Systems Service Manual
3LQ±$VVLJQPHQWV±IRU±WKH±363%±3RZHU±&RQQHFWRUV±±±
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.
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.
)LJXUH±²´¾³±±363%±3RZHU±&RQQHFWRU±3:5²
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
7DEOH±²´µ³±±3RZHU±&DEOH±&RQQHFWLRQV±)URP±WKH±363%
±²FRQWLQXHG³
±
&RQQHFWRU
&DEOH²&RQQHFWLRQ
13
14
15
16
17
common (black)
+5 VDC (red)
NC_TFSC (gray)
+5 VDC (red)
SYS_PS_ON #
1
(gray)
common (black)
common (black)
common (black)
–5 VDC (white)
+3.3 VDC (orange)
18
+5 VDC (red)
19
20
21
22
23
24
+5 VDC (red)
1
2
3
4
5
+12 VDC (yellow)
+3.3 V_SENSE (orange)
common (black)
common (black)
+5 VFP (violet)
SYS_PWR_GOOD
2
(gray)
SENSE (black)
+5 V_SENSE (red)
common (black)
–12 VDC (blue)
6
+5 VDC (red)
7
8
9
10
11
12
+3.3 VDC (orange)