PC Server 325 (Type 8639) System/Processor Board
PC Server 325 (Type 8639) System Board
1 Ethernet Enable (J22)
Pin 1-2 = disable
Pin 2-3 = enable (default)
2 SCSI Controller Enable (J26)
Pin 1-2 = disable
Pin 2-3 = enable (default)
3 External SCSI Connector
4 External SCSI Termination Jumper (J29)
Pin 1-2 = 8-bit ext. SCSI Device attached
Pin 2-3 = 16-bit ext. SCSI Device attached (default)
5 Parallel Connector
6 Internal SCSI Connector
7 Serial Connector
8 Infrared Connector
9 Power Connector
10 Hard Drive Fan Connector
11 Operator Panel Connector
12 System Fan Connector
13 System Management Connector
14 Diskette Drive Connector
15 Flash Write Protect (J30)
Pin 1-2 = enable (default)
Pin 2-3 = disable
16 EISA (brown) / ISA (black) Slots
17 C2 Security Cable Connector
18 Speaker Connector
19 System Management Jumper (J49)
Pin 1-2 = System Mgmt.-Adapter is installed.
Pin 2-3 = System Mgmt.-Adapter is not installed (default)
20 Power-On Password Jumper (J12)
Pin 1-2 = PW enabled
Pin 2-3 = disable
21 Processor Board Connector
22 Video Connector
23 Video Enable (J25)
Pin 1-2 = enable (default)
Pin 2-3 = disable
24 PCI Slots
25 Keyboard Controller
26 Mouse Connector
27 Ethernet Connectors
PC Server 325 Processor Board
1 Primary Microprocessor Connector
2 Secondary Voltage Regulator Module Connector (VRM)
3 Reserved
4 Memory Connectors (J2, J3, J4, J5)
5 Reserved (J9, J10, J12)
J12 - PCI/EISA (brown EISA socket) systemboard = Pin 1-2
J12 - PCI/ISA (black ISA socket) systemboard = Pin 2-3
For J9 see -> ECA010
6 PMC Frequency Sel. Jumpers (J17, J18)
Microprocessor memory controller (PMC) frequency
sel. jumper block.
J17 = open, J18 = short for 66.66MHz
7 Clock Ratio Jumper (J27, J28, J29, J30)
J30 = short, J29 = open, J28 = short and J27 = short
Frequ. sel. block = 3 (200/66MHz)
8 Secondary Microprocessor Fan Connector (J21)
9 Secondary Microprocessor Connector
10 Primary Microprocessor Fan Connector (J22)
11 Clock Frequency (J1, J20)
J1 = short, J20 = open - Clk speed = 66.66MHz
12 Primary Voltage Regulator Module Connector (VRM)
13 Voltage Regulator Module (VRM)
Processor Board Jumpers
If the microprocessor frequency jumpers are incorrect,
system board components will overheat and component damage can occur.
be sure that the microprocessor bus-to-core ratio jumper is set properly.
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