Field Replaceable Unit (Fru) Codes; Additional Fru Information - IBM F10 Service Manual

Field Replaceable Unit (FRU) Codes

FRU Code
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x10 - 0xff

Additional FRU Information

Bytes 26 and 27 provide FRU Group Qualifiers for byte 14 (the primary FRU code).
Byte 28 is an additional FRU group code, and Bytes 29 and 30 provide FRU Group
Qualifiers for byte 28. Byte 31 is another additional FRU group code, with bytes 32
and 33 providing FRU Group Qualifiers for it.
FRU Group Qualifiers for the Subsystem Group (0x06) are covered in the 2102
hardware specification.
FRU Group Qualifiers for the Drive Group are simply reiterations of the channel/id
value.
FRU Group Qualifiers for the Sub-Enclosure Group are as follows:
258
IBM 2102 Model F10 and Model D00 Service Guide
Description
Host Channel Group
A FRU group consisting of the host SCSI bus, its SCSI interface chips and all initiators
and targets on the bus.
Controller Drive Group
A FRU group consisting of the SCSI interface chips on the controller which connect to
the drive buses.
Controller Buffer Group
A FRU group consisting of the controller logic to implement the on-board data buffer.
Controller Array ASICs Group
A FRU group consisting of the ASICs on the controller associated with the array
functions.
Controller Other Group
A FRU group consisting of all the controller related hardware not associated with
another group. This includes the controller power supply.
Subsystem Group
A FRU group consisting of subsystem components that are monitored by the array
controller, such as power supplies and fans.
Subsystem Configuration Group
A FRU group consisting of subsystem components that are configured by the user.
Sub-enclosure Group
A FRU group consisting of attached enclosure devices, including power supplies and
other subsystem components in the sub-enclosure. Refer to "Additional FRU
Information" below for more information on the faulty component.
Drive Group
A FRU group consisting of a complete disk drive assembly. The first digit indicates the
SCSI bus, the last digit the SCSI ID.