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NVRAM
Audio out (lime)
Audio in (blue)
Serial
TTY B
Battery
J19 OpenBoot PROM
Serial
jumper (OBP WE)
TTY A
USB 2.x
USB 2.x
Gbe0
Gbe1
J54
Gigabit
Ethernet
J40
J43
J44
Sun Ultra 45 Motherboard Diagram
FIGURE C-1
C-2
Sun Ultra 45 and Ultra 25 Workstations Service and Diagnostics Manual • May 2006
DIMM0
DIMM1
DIMM2
DIMM3
J9 flash recovery
jumper
JIO bridge chip
DIMM4
DIMM5
DIMM6
DIMM7
PCI-E2 (x8 speed) J32
PCI-E1 (x8 speed) J37
PCI-E0 (x4 speed)
PCI-X1 100 MHz
PCI-X0 100MHz
CPU0
J52 CPU0 fan pwr
J53 CPU1 fan pwr
CPU1
PCI-E switch
I/O
bridge
J45 Pwr supply data
J3 USB
Bank 1
audio
Bank 0
Bank 1
Bank 0
J11 DVD
J20 fan tray
backplane pwr
J22
P2 pwr
Bank 0
J28
Bank 1
P1 pwr
Bank 0
Bank 1
J34
Unused
J36
USB
J42
HDD
SAS / SATA
back-
plane
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