Error Code Format - IBM 3746-900 Installation And Maintenance Manual

Error Code Format

This section provides an explanation of the encoded non-SCSI and SCSI POST
error codes.
Error messages are displayed on the panel as three, four, five, eight, twelve, or
thirteen digits. An X in an error message can be any number or letter. The shorter
POST errors are highlighted in the Symptom-to-FRU Index. Some digits will
represent different information for SCSI errors versus non-SCSI errors.
The following figure shows which digits display the shorter POST errors. The figure
also defines additional SCSI information.
Notes:
1. Non-IBM device error codes and documentation supersede this list.
2. Duplicate SCSI ID settings will cause misleading error symptoms or messages.
RDDDPLSCB QEET
│└┬┘│││││ │└┤└─ Test state
│ │ │││││ │ └── Error code Extension
│ │ │││││ └──── Qualifier
│ │ │││││
│ │ ││││└───── Bus (0=internal 1=external)
│ │ │││└────── Capacity of the device
│ │ ││└─────── Slot number of the device
│ │ │└──────── LUN (usually 0)
│ │ └───────── PUN (SCSI ID #)
│ │
│ └─────────── Device Number
└───────────── Reserved Digit (usually 0)
4-2
3745-XXA 4-2 3746-9X0: 6578 SPIM
To enable the beep, memory count and checkpoint code display when a
successful POST occurs, enable Power on Status in setup. See "Service
Processor Configuration / Setup Utility" on page H-8.