IBM-AUSTRIA - PC-HW-Support    30 Aug 1999

PC SERVER 720: PROBLEM AFTER REPLACING PLANAR OR BRIDGE CARD

    Record number:       H166314
    Device:              D/T8642
    Model:               M
    Hit count:           UHC00000
    Success count:       USC0000
    Publication code:    PC50
    Tip key:
    Date created:        O99/03/26
    Date last altered:   A99/03/29
    Owning B.U.:         USA


Abstract: PC SERVER 720: PROBLEM AFTER REPLACING PLANAR OR BRIDGE CARD

TEXT:

Problems after replacing planar or bridge card.

SYMPTOMS:

The system may experience any of the following problems:

•  network issues
•  performance issues
•  system hangs
•  abends
•  blue screens under NT

PROBLEM ISOLATION AIDS:

•  The system is a PC Server 720 server, Type 8642, any Model.

FIX:

If an IPB Bridge card FRU P/N 75H9149 is installed, then jumper J24 on the planar must be set to 33MHz.

Note: The default setting of the jumper J24 is 25MHz (no jumper present indicates 25MHz as well).

DETAILS:

Please refer to HMM pub# S30H-2501-01 page 376 for system board layout with jumper location J24 (PCI speed select jumper).

Note: The planar is marked with the 25 and 33 MHz settings for J24.
J24 is a 3 pin jumper and a 33MHz setting requires jumpering the middle pin and the pin to the rear of the planar.

NOTES: If a 720 planar is replaced then the jumper should be removed from the planar being replaced and installed on the new planar.
The planars from FRU stock will not have the correct jumper setting for an IPB Bridge on J24 or may not have any jumpers installed on J24.

Please see the LEGAL  -  Trademark notice.
Feel free - send a   for any BUG on this page found - Thank you.