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Service Hints & Tips

Document ID: RMIE-38LBWY

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IBM PC Server/IBM ValuePoint - System fails to POST

Applicable to: World-Wide

Symptom :
IBM PC Server 320 & PS/ValuePoint Performance Series 6472, 6482, 6484, 6492, and 6494 systems may intermittently fail to start the Power On Self Test (POST) routines after the system is powered off, then on.

Problem Isolation Aids :
The initial daily startup of the system functions normally. If the system is powered off for any reason, and quickly powered-on again, the system may intermittently fail to begin the POST routine. The power supply fan is turning, the hardfile is spinning, and the power-on LED is on.

Fix :
Users experiencing this situation should ensure that the system unit is not powered-on for at least 10 seconds following power off. This procedure allows the system board components sufficient time to drain and reset prior to the power-on cycle. Due to component tolerances, some system boards may take as long as 30 seconds before resetting.

If the system does not begin the POST routine after a 30-45 second power-off cycle, continue normal problem determination to isolate the failing FRU.

SAS Keywords :
VALUE POINT PSY2 PSVP IBMPC
PSVPPWR PSY2PWR PSVPBRD PSY2BRD
S3 REV. L D/T6472 D/T6482 D/T6492
D/T6494 PSY2ERR VALUEPOINT PSVPERR
IBM PC Server PCServer300

Search Keywords

Hint Category

Power

Date Created

16-08-96

Last Updated

30-04-98

Revision Date

28-04-99

Brand

IBM PC, IBM PC Server

Product Family

ValuePoint, PC Server 320

Machine Type

6472, 6482, 6484, 6492, 6494, 8640

Model

all

TypeModel

Retain Tip (if applicable)

H133635

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