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     IBM-AUSTRIA - PC-HW-Support    30 Aug 1999 | 
 
Undetermined Problems
Undetermined Problems
You are here because the diagnostic tests did not identify
the failure, the Devices List is incorrect, or the system is
inoperative.
Note:
   -  If you suspect a software mismatch is causing
 failures (solid or intermittent), be sure to see
'Resolving Configuration Conflicts'
   
 -  A corrupt CMOS can cause undetermined
 problems.
 
Check the LEDs on all the power supplies, see
'Power Supply LED Errors'. If the LEDs indicate
the power supplies are working correctly, return here and
do the following:
   -  Power-off the computer.
   
 -  Be sure the system is cabled correctly.
   
 -  Remove or disconnect the following (one at a time)
 until you find the failure (power-on the computer and
 reconfigure each time).
   -  Any external devices
   
 -  Surge suppressor device (on the computer)
   
 -  Modem, printer, mouse, or non-IBM devices
   
 -  Each adapter
   
 -  Drives
   
 -  Memory-Module Kits (Minimum requirement = 1
 bank of 64 MB DIMMs)
 
Note:
 Minimum operating requirements are:
 Power Supply
 Power Backplane
 Power AC Inlet Box
 System Board (With pins 2 and 3 of J32
 connected together to bypass the power
 switch (button). The default is pins 1 and
 2.)
 Processor Board (Verify that the J10 and
 J17 connectors are are installed correctly.)
 Memory-Module Kits (Minimum requirement
 = 1 bank of 64 MB DIMMs)
   
 -  Power-on the computer. If the problem remains,
 suspect the following FRUs in the order listed:
   -  Power Supply
   
 -  Power Backplane
   
 -  System Board
   
 -  Processor Board
 
 
Note:
If the problem goes away when you remove an
adapter from the system, and replacing that adapter
does not correct the problem, suspect the system
board then the processor board(s)
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