Seagate ST31200W Installation Manual page 29

Hawk 1LP (Wide) Installation Guide, Rev. B
Notes for Figure 3a, 3b and 3c:
[1] Notes explaining the functions of the various jumpers on
jumper header connectors J2, J1-auxiliary and J6 are
given below in left to right order of jumper position. The
term "default" means as standard OEM units are con-
figured when shipped from factory. "Off" means no
jumper is installed; "On" means a jumper is installed. Off
or On underlined is factory default condition.
[2] The PCB on "WC" models does not have connector J1-
auxiliary, but has a single 80 pin J1 connector having
combined SCSI I/O and DC power connector instead of
the 50 pin SCSI I/O and 4 pin DC power connectors that
"W" and "WD" models have. Included among the 80 J1
pins are the SCSI ID, Motor Start and Delayed Motor
Start select functions, and the synchronous spindle
master sync signal and the remote BUSY LED signal.
Do not use J2 and J6 for these five functions if the host
uses the ones included in the 80 pin J1 connector.
[3] Drive ID may be established by installing jumper plugs
in one of the patterns shown in Figures 3a, 3b and 3c or
by plugging onto J6 or J1-auxiliary a cable that leads to
an external ID selection circuit. Jumper plugs on both J6
and J1 auxiliary, or J6 and an external ID selection
source should not be used. See [4] for other functions of
these two headers that are time-shared with the drive ID
function.
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