Dell OptiPlex GXa Service Manual - Page 47
DC Power Distribution for the OptiPlex NX Computer, core regulator
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system board +3 VDC power management RTC/ and NIC logic NVRAM battery computer power supply P1 PWRGOOD PSON# +5 VFP POWER_1 PSON# +5 VFP +5 VDC +12 VDC -12 VDC +5 VDC +12 VDC -12 VDC P2 POWER_2 +3.3 VDC +3.3 VDC +5 VDC +12 VDC -12 VDC RISER +3.3 VDC +5 VDC +12 VDC -12 VDC riser board P1 PCI1 internal P3 hard-disk drive +12 VDC FAN main memory sockets DIMM_A DIMM_B DIMM_C +5 VFP +5 VDC PANEL +5 VDC USB +5 VDC KYBD fuses (2) +5 VDC MICROPROCESSOR processor core regulator +3.3 VDC core VCC +2.1 to +3.5 VDC MOUSE NOTE: +5VFP is routed to the integrated NIC logic on the system board and to P1 on the riser board. Figure 1-30. DC Power Distribution for the OptiPlex NX Computer System Overview 1-35
System Overview
1-35
Figure 1-30.
DC Power Distribution for the OptiPlex NX Computer
+5 VDC
+3.3 VDC
fuses (2)
core VCC +2.1 to +3.5 VDC
+3.3 VDC
power
management
and NIC logic
RTC/
NVRAM
+5 VDC
+5 VDC
+5 VDC
+5 VFP
+12 VDC
–12 VDC
+3 VDC
P2
+3.3 VDC
PWRGOOD
P1
POWER_1
PSON#
+5 VFP
+5 VDC
+12 VDC
–12 VDC
PSON#
+5 VFP
+5 VDC
+12 VDC
–12 VDC
P3
+12 VDC
+12 VDC
–12 VDC
computer
power supply
battery
+3.3 VDC
+5 VDC
PCI1
MICROPROCESSOR
PANEL
KYBD
MOUSE
DIMM_A
main memory
sockets
FAN
RISER
riser board
system board
POWER_2
processor
core regulator
+5 VDC
USB
internal
hard-disk drive
P1
NOTE: +5VFP is routed to
the integrated NIC logic on
the system board and to P1
on the riser board.
DIMM_B
DIMM_C