Juniper SSG 140 Hardware Installation And Configuration Manual page 41

After the device has rebooted, the console displays the login prompt for the
device. The STATUS LED blinks green. The login for the admin name and
password is netscreen.
If you do not follow the complete sequence, the reset process cancels without any
configuration change and the console message states that the erasure of the
configuration is aborted. The STATUS LED returns to blinking green. If the device
did not reset, an SNMP alert is sent to confirm the failure.
Resetting the Device to Factory Defaults
41