Product Documentation
Abstract
IBM PC Server 315 System Board Diagram 1) Auxiliary power connector 2) CMOS clear (password) jumper 3) Diskette drive connector 4) Switches for microprocessor speeds, diskette write protection, and serial port B (see "Switch Settings", bel
Content
IBM PC Server 315 System Board Diagram
1) Auxiliary power connector
2) CMOS clear (password) jumper
3) Diskette drive connector
4) Switches for microprocessor speeds, diskette write protection, and serial port B (see "Switch Settings", below)
5) Battery
6) 3.3 V ac power connector
7) Main power connector
8) Secondary fan connector
9) Microprocessor
10) Power LED connector
11) First fan connector
12) System memory connector 4 (MEM4)
13) System memory connector 3 (MEM3)
14) System memory connector 2 (MEM2)
15) System memory connector 1 (MEM1)
16) Riser card connector
17) Serial B port
Switch Settings
NOTE: If the microprocessor bus-to-core ratio is incorrect, system-board components will overheat and component damage might occur. Be sure that microprocessor switch settings on the microprocessor switch are set properly according to the speed of the microprocessor.
There are eight switch settings on the microprocessor switch. The switch settings have the following meanings:
| Switch Number: | Purpose: |
|---|---|
| 1 | Core ratio |
| 2 | Core ratio |
| 3 | Core ratio |
| 4 | Core ratio |
| 5 | System bus speed |
| 6 | System bus speed |
| 7 | Serial B port On - Enables Serial B port Off - Disables Serial B port |
| 8 | Diskette Drive Off - Normal diskette operation On - Enables read-only diskette operation |
Microprocessor switch settings:
Password jumper settings:
Diskette write-protect settings:
NOTE: This switch does not affect the ability to read information from a diskette.
Serial port B/Infrared port jumper settings:
Document Location
Worldwide
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Document Information
Modified date:
23 January 2019
UID
ibm1DDSE-452N9J