IBM 300 Series 6268, Hardware Maintenance Manual

Page: 331 / 450

Note
Type 6868/6878 computers default to come up quiet
(No beep and no memory count and checkpoint code
display) when no errors are detected by POST.
To enable Beep and memory count and checkpoint
code display when a successful POST occurs:
1. Enable Power on Status in setup. See “Setup
Utility program” on page 329.
Error code format
This section provides an explanation of the encoded
non-SCSI and SCSI POST error codes.
Error messages are displayed on the screen 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
Ÿ
Non-IBM device error codes and documentation
supersede this list.
Ÿ
Duplicate SCSI ID settings will cause misleading
error symptoms or messages.
RDDDPLSCB QEET
│└┬┘│││││ │└┤└─
T
est state
│ │ │││││ │ └──
E
rror code
E
xtension
│ │ │││││ └────
Q
ualifier
│ │ │││││
│ │ ││││└─────
B
us (ð=internal 1=external)
│ │ │││└──────
C
apacity of the device
│ │ ││└───────
S
lot number of the device
│ │ │└────────
L
UN (usually ð)
│ │ └─────────
P
UN (SCSI ID #)
│ │
│ └───────────
D
evice Number
└─────────────
R
eserved Digit (usually ð)
IntelliStation - 6868/6878
321