Seagate ST43401N/ND ユーザーズマニュアル

ST43401N/ND, ST43402ND User’s Manual, Rev. B

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After installing the drive, follow the sequence outlined below for initial startup.

1. Place the on/standby switch in the on ( l ) position. What follows

depends on the setting of the Start Command option and the Spinup
Delay option jumpers.

• If the Start Command option jumper was connected, the spindle spinup

begins immediately after a Start Unit command is received from the
SCSI bus.

• If the Spinup Delay option jumper and the Start Command option jumper

were both disconnected, the spindle spinup begins immediately.

• If the Spinup Delay option jumper was connected and the Start Com-

mand option jumper was disconnected, the spindle spinup begins after
a sequence delay interval. The length of this interval equals the SCSI
Bus ID number (Target ID) multiplied by 10 seconds.

For example: SCSI bus ID 0 = 0 second delay

SCSI bus ID 15 = 150 second delay

2. Observe that the Ready LED begins flashing when power is applied to the

spindle motor. The Ready LED is one of two green control board LEDs—
see Figure 22.

3. Observe that the Ready LED lights steadily within 30 seconds after the

power is applied to the spindle motor. This indicates that drive motor is up
to speed and that heads are at track 0.

4. Observe that the Heartbeat LED is blinking. This indicates that the

SCSI controller is operating properly. The Heartbeat LED is the other
green control board LED—see Figure 22.

If all of these events occurred, the drive is now ready for online operation. If
any event did not occur, a problem exists in the drive or its installation —refer
to maintenance information in Section 5.