IBM i 830 Repair Manual page 503

Description/Action If only a type number is listed, go to the "Type, Model, and Part
Failing Item Code Number list" on page 885 to determine the part number.
FI00841 FI00841 indicates that the terminating plug for the attached device is the failing item.
v For tape devices—see FI00880
FI00842 FI00842 indicates that the external signal cable for the attached device is the failing item.
See EXTSCSI
FI00844 FI00844 indicates that the device controller for the attached device is the failing item.
v For tape devices—see FI00882
FI00845 FI00845 indicates that the external signal cable is the failing item.
See EXTSCSI
FI00850 FI00850 indicates that the interface cables attached to the tape IOP are the failing items.
FI00851 FI00851 indicates that the I/O device attached to the tape IOP is the failing item.
Use the service information of the I/O device to continue analyzing the problem.
FI00856 FI00856 indicates that an active tape IOP is the failing item.
Use the IOP type to determine the part.
FI00870 FI00870 indicates that a storage device is the failing item.
Use the device type to determine the part.
Note: The 636x Tape Unit is located in the FC 5032 Removable Storage Unit.
Chapter 3. Problem Isolation Procedures (PIPs), Failing Items, and Symbolic FRU Isolation
Failing Items
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