Seagate ST43400N/ND 사용자 설명서

32

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 on the control board.

• 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 Command

option jumper was disconnected, the spindle spinup begins after a se-
quence 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 7 = 70 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 16.

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 16.

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 section 5.