IBM 7940, Problem Determination And Service Manual

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v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See Chapter 3, “Parts listing, Type 7940 and 7941 servers,” on page 19 to determine which components
are customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Sensor type
Record type, OEM SEL
DATA byte definition and
description
Byte definition and description
OEM PCI
POST without
Timestamp For all record types 0xE0
and Byte 1=0x00
Byte 4=slot number
Byte 5 = Bus Number
Byte 6=Device ID (MSB)
Byte 7=Device ID (LSB)
Byte 8=Vendor ID (MSB)
Byte 9=Vendor ID (LSB) Byte 1=0x00, Byte 2=0x00 - Device OK
Byte 1=0x00, Byte 2=0x01 - Required ROM space not available
Byte 1=0x00, Byte 2=0x02 - Required I/O Space not available
Byte 1=0x00, Byte 2=0x03 - Required memory not available
Byte 1=0x00, Byte 2=0x04 - Required memory below 1MB not
available
Byte 1=0x00, Byte 2=0x05 - ROM checksum failed
Byte 1=0x00, Byte 2=0x06 - BIST Failed
Byte 1=0x00, Byte 2=0x07 - Planar device missing or disabled by user
Byte 1=0x00, Byte 2=0x08 - PCI device has an invalid PCI
configuration space header
Byte 1=0x00, Byte 2=0x09 - FRU information for added PCI device
Byte 1=0x00, Byte 2=0x0A - FRU information for removed PCI device
Byte 1=0x00, Byte 2=0x0B - A PCI device was removed, PCI FRU
information is stored in next log entry
Byte 1=0x00, Byte 2=0x0C - A PCI device was added, PCI FRU
information is stored in next log entry
Byte 1=0x00, Byte 2=0x0D - Requested resources not available
Byte 1=0x00, Byte 2=0x13 - Planar video disabled due to add in video
card
Byte 1=0x00, Byte 2=0x14 - FRU information for PCI device partially
disabled
Byte 1=0x00, Byte 2=0x15 - A PCI Device was partially disabled, PCI
FRU information is stored in the next log entry
Byte 1=0x00, Byte 2=0x16 - A 33MHz device is installed in a 66 MHz
bus, PCI device iformation is stored in the next log entry
Byte 1=0x00, Byte 2=0x17 - FRU information, 33 MHz device installed
on a 66 MHz bus
OEM
Processor
POST without
Timestamp For all record types 0xE0
and Byte 1=0x01
Byte 4=Processor number Byte 1=0x01, Byte 2=0x00 - Processor has fialed BIST
Byte 1=0x01, Byte 2=0x01 - Unable to apply processor microcode
update
Byte 1=0x01, Byte 2=0x02 - POST does not support current stepping
level of processor
Byte 1=0x01, Byte 2=0x03 - CPU mismatch detected
OEM Memory
POST without
Timestamp For all record types 0xE0,
Byte 1=0x02 and Byte
2=0x00
Byte 6=Memory DIMM
number Byte 1=0x02, Byte 2=0x00, Byte 3=0x00 - DIMM Enabled
Byte 1=0x02, Byte 2=0x00, Byte 3=0x01 - DIMM disabled, failed ECC
test
Byte 1=0x02, Byte 2=0x00, Byte 3=0x02 - DIMM disabled, failed
POST/BIOS memory test
Byte 1=0x02, Byte 2=0x00, Byte 3=0x03 - DIMM disabled,
non-supported memory device
Byte 1=0x02, Byte 2=0x00, Byte 3=0x04 - DIMM disabled,
non-matching or missing DIMM(s)
Byte 1=0x02, Byte 2=0x00, Byte 3=0x05 - DIMM disabled, multibit or
multi symbol error.
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IBM System x3455 Type 7940 and 7941: Problem Determination and Service Guide