PC Server 8640 Model 320 Board Locations (MC-PCI)


8640 PC Server Model 320 System Board (MC-PCI)

System Board Connections

J2 SCSI LED Connector (yellow / white)
J3 IDE Hard Drive LED Connector (red / white)
J4 System Fan Connector (black / red)
J5 Cache Card Connector
J6 Speaker Connector
J8 Primary CPU Fan Connector
J9 Secondary CPU Fan Connector
J10 Power LED Connector (green / white)

J12 Spare Jumper (Clock Multiply)
Pin 1-2 = x2
Pin 1 = x1.5

J13 IDE Hard Drive Connector

J15 Password Write
Disable = Pin 1-2
Enable = Pin 2-3

J16 C2 Cover Open
J17 C2 Keylock

J19 Parallel Port Connector
J20 Diskette Drive Connector
J21 Serial Port B-Connector
J24 Serial Port A-Connector
J25 Reset Switch

J26 SCSI select
System Board = Pin 1-2 (default)
installed Adapter = Pin 2-3

J27 Video select
System Board = Pin 1-2 (default)
installed Adapter = Pin 2-3

J28 SCSI Standard Connector
J35 SCSI Fast/Wide Connector
J38 Power Supply Connector
J39 SCSI Fast/Wide external Connector
J40 Video Connector
J41 Keyboard Connector
J42 Mouse Connector

J43 Clock select
50MHz = Pin 3-4, 5-6
60MHz = Pin 1-2, 5-6
66MHz = Pin 1-2, 3-4

The following diagram indicate the pin orientation and numbering scheme with respect to the edge of the planar. Refer to the diagram on the system frame or door for additional information.

               Level D and E Planer                   Level G Planar
                     1 °  ° 2                      1 °  ° 2
                     3 °  ° 4                      3 °  ° 4
                     5 °  ° 6                      5 °  ° 6
                       (J43)    1 °                  (J43)  1 °   1 °
                                2 °                         2 °   2 °
                                 (J12)                      3 °   3 °
                                                             (J1)  (J12)
            +-----------------------------------------------------------+
            |                   (Original-Levels)                       |
            |    Level D     |      Level E      |      Level G         |
 +----------|----------------|-------------------|----------------------|
 |          |  96G1340 (320) |     N/A           |     N/A              |
 |  FRU P/N |    N/A         |   96G3694 (320)   |   96G3694 (320)      |
 |          |  96G2648 (520) |   96G2648 (520)   |   96G2648 (520)      |
 |----------|----------------|-------------------|----------------------|
 |   Jumper |  J12  |  J43   |  J12   |    J43   |   J1 | J12  |  J43   |
 |          | 2-pin | 6-pin  | 2-pin  |   6-pin  | 3-pin|3-pin | 6-pin  |
 |------------------|-----------------|-----------------|------|--------|
 |Processor |       |                 |                 |      |        |
 |------------------|-----------------|-----------------|------|--------|
 |50/75MHz  | open  |3-4, 5-6|  open  | 3-4, 5-6 |  1-2 | 1-2  |3-4, 5-6|
 |----------|-------|--------|--------|----------|------|------|--------|
 |60/90MHz  | open  |1-2, 5-6|  open  | 1-2, 5-6 |  1-2 | 1-2  |1-2, 5-6|
 |          |  (320 only)    |        |          |      |      |        |
 |----------|-------|--------|--------|----------|------|------|--------|
 |66/100MHz | open  |1-2, 3-4|  open  | 1-2, 3-4 |  1-2 | 1-2  |1-2, 3-4|
 |          |  (520 only)    |        |          |      |      |        |
 |----------|----------------|--------|----------|------|------|--------|
 |66/133MHz | Not Supported  |   1-2  | 1-2, 3-4 |  1-2 | 2-3  |1-2, 3-4|
 +----------------------------------------------------------------------+

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