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40 Hardware Maintenance Manual: xSeries 330
System board
The illustrations in the following sections show the components on the system board.
System board options connectors
The following illustration identifies the connectors on the system board.
System board jumper blocks
Any jumper blocks on the system board that are not shown in the illustration are
reserved. For normal operation of the system, no jumpers should be installed on any
of the jumper blocks. See “Recovering BIOS” on page 18 for information about the
Flash ROM page-swap jumper.
System board switch block
The switch block contains microswitches 1-8. As pictured in this illustration, switch 1
is at the top of the switch block and switch 8 is at the bottom. For more information
about this switch block see “Setting the password override switch” on page 34.
Serial port A
(J52)
Serial port B
(J51)
Management port
(J53)
C2T (in)
port (U38)
C2T (out)
port (U61)
USB 2
port (J15)
USB 1
port (J13)
RS-485 (Advanced
System Management
interconnect) ports (J5)
Ethernet
ports (J1)
PCI slot 1
64 bit
33 MHz (J10)
PCI slot 2
64 bit
33 MHz (J23)
Switch block
(SW1)
Battery
Primary IDE
(J7)
SCSI signal
(J4)
Power (J3)
Power (J6)
Diskette (J11)
SCSI hard disk
drive power (J8)
Fan 1 (J12)
Fan 2 (J14)
Fan 3 (J22)
Fan 4 (J24)Fan 6 (J38)
Fan 5 (J35)
Microprocessor 1
(U47)
Microprocessor 2
(U79)
DIMM 1
(J32)
DIMM 2
(J34)
DIMM 3
(J41)
DIMM 4
(J47)
Secondary
IDE (J2)
CD Power (J17)
BIOS code
page jumper
(J19)
Operator
information
panel (J43)