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System board diagrams - IBM Netfinity 3500 M20

Product Documentation


Abstract

This document contains a diagram of the system board of the Netfinity 3500 M20 server.

Content

System board component locations
The following illustrations detail certain locations on the system board.

System board connectors
The following illustration shows the location of the connectors on the system board.

System board connectors

  1. Microprocessor 2 (U11)
  2. Microprocessor 1 (U12)
  3. PCI 5
  4. PCI 4
  5. Battery
  6. PCI 3
  7. PCI 2
  8. PCI 1
  9. DIMM 1
  10. DIMM 2
  11. DIMM 3
  12. DIMM 4
  13. Voltage regulator module (VRM)

System board cable connectors
The following illustration shows the location of the cable connectors on the system board.

System board cable connectors

  1. Rear fan
  2. Microprocessor 2 fan
  3. Microprocessor 1 fan
  4. Main power
  5. Hard disk drive fan
  6. Front panel
  7. I/O fan
  8. Diskette
  9. IDE
  10. SCSI channel

System board external port connectors
The following illustration identifies system-board connectors for external devices.

System board external connectors

  1. Keyboard/mouse
  2. USB
  3. Serial A
  4. Parallel
  5. Serial B
  6. Ethernet
  7. Video

System board switches and jumpers
The following illustration shows the switches and jumpers on the system board.

System board switches and jumpers

  1. Switch block
  2. Flash ROM page swap jumper (J38)

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 except the J38 Flash ROM page swap jumper.

System board switch block
The switch block contains microswitches 1-8. Switch 8 is at the right of the switch block and switch 1 is at the left. The following table describes the function for each switch.

Switch number Switch description
8 Bypass power-on password. When toggled to the opposite position, bypasses the power-on password, if one is set.
7 Reserved. The default setting is Off.
6 Reserved. The default setting is Off.
5 Forces system power on when set to On position. The default setting is Off for normal operation.
4 Reserved
3 Reserved
2 Reserved
1 Reserved

Additional information
Netfinity 3500 M20 - System service parts (FRU) listing
Netfinity 3500 M20 - Hardware Maintenance Manual

Document Location

Worldwide

Operating System

Older System x:Operating system independent / None

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Document Information

Modified date:
24 January 2019

UID

ibm1MIGR-52640

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