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C-44 Sun Ultra 60 Service Manual • August 2001
FIGURE C-12 System Unit Motherboard Functional Block Diagram
J2703=FPROM R/W, J2605 + J2604=RS423/232,
J3001=UPA Clk /2 /3, J2804=FPROM Boot Hi-Lo.
J2703
U1004
U1003
U1002
U1001
U0904
U0903
U0902
U0901
U0804
U0803
U0802
U0801
U0704
U0703
U0702
U0701
DIMM
bank 3
DIMM
bank 2
DIMM
bank 1
DIMM
bank 0
Audio J3501
CPUSlot 1 (J0201)
CPU Slot 0 (J0101)
Monitor 0 J3301
Monitor 1 J3401
PCI 66 1 J1301
PCI 2 J1401
PCI 3 J1501
PCI 4 J1601
Internal SCSI
J1801
MII
SCSI
TPE
Serial Port B
Keyboard/Mouse
Parallel Port
J1901
J2101
J2301
J2501
J2502
(Top) J4002
Serial Port A
(Bottom) J4003
Rear
Top
Bottom
Front
NVRAM/
TOD
J2604J2702J2801J0102J3001
J2605J2804J0202
J2903
J2902
J2901
J2802