Dell OptiPlex GXi Service Manual (.pdf) - Page 34
DC Power Distribution for the Low-Profile Computers
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keyboard controller system board +3 VDC system power supply P1 PWRGOOD PSON# +5 VFP +5 VDC -5 VDC +12 VDC -12 VDC POWER1 power management logic RTC/ NVRAM battery PSON# +5 VFP +5 VDC -5 VDC +12 VDC -12 VDC RISER +5 VDC -5 VDC +12 VDC -12 VDC P2 +3.3 VDC POWER2 riser board +3.3 VDC +5 VDC +12 VDC -12 VDC PCI1 PCI2 +5 VDC -5 VDC +12 VDC -12 VDC ISA1 ISA2 optional P3 drive P4 3.5-inch diskette drive P5 internal hard-disk drive +12 VDC FAN main memory sockets DIMM_A DIMM_B fuse DIMM_C +5 VFP +5 VDC +5 VDC +5 VDC DIMM_D +5 VDC MICROPROCESSOR processor core regulator +3.3 VDC core VCC +2.1 to +3.5 VDC PANEL USB KYBD MOUSE Figure 1-15. DC Power Distribution for the Low-Profile Computers 1-16 Dell OptiPlex GXi Systems Service Manual
1-16
Dell OptiPlex GXi Systems Service Manual
Figure 1-15.
DC Power Distribution for the Low-Profile Computers
–5 VDC
fuse
core VCC +2.1 to +3.5 VDC
+3.3 VDC
power
management
logic
RTC/
NVRAM
+5 VDC
+5 VDC
+5 VDC
+5 VFP
+5 VDC
–5 VDC
+12 VDC
–12 VDC
+3 VDC
P2
+3.3 VDC
PWRGOOD
P1
POWER1
PSON#
+5 VFP
+5 VDC
+12 VDC
–12 VDC
PSON#
+5 VFP
+5 VDC
–5 VDC
+12 VDC
–12 VDC
P3
+5 VDC
+12 VDC
–12 VDC
+12 VDC
+12 VDC
–12 VDC
3.5-inch
diskette drive
system
power supply
keyboard
controller
battery
+5 VDC
–5 VDC
ISA1
ISA2
PCI1
PCI2
MICROPROCESSOR
PANEL
KYBD
MOUSE
DIMM_A
DIMM_B
DIMM_C
DIMM_D
main memory
sockets
P4
FAN
RISER
optional
drive
P5
riser board
system board
internal
hard-disk drive
POWER2
processor
core regulator
+5 VDC
USB
+3.3 VDC