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Backplane Assembly
102
Service
Figure 38. SCSI Bus Reset Switch Default Settings
Table 23. SCSI Bus Reset Switch Functions
Switch 1:
Bus B
Power Detect
Switch 2:
Bus B
Module Detect
Switch 3:
Bus A
Power Detect
Switch 4:
Bus A
Module Detect
Switch
Enabled
(Up, Default):
SCSI bus B is reset if
one of these events
occurs:
• The power switch is
cycled.
• Both power cords
are unplugged.
• The input voltage
limits are exceeded on
both power supplies.
• Both power supplies
shut down.
SCSI bus B is reset if
a storage module is
inserted or removed.
SCSI bus A is reset if
one of these events
occurs:
• The power switch is
cycled.
• Both power cords
are unplugged.
• The input voltage
limits are exceeded on
both power supplies.
• Both power supplies
shut down.
SCSI bus A is reset if
a storage module is
inserted or removed.
Switch
Disabled
(Down):
SCSI bus B is not
reset if one of the
above events occurs.
SCSI bus B is not
reset if a storage
module is inserted or
removed.
SCSI bus A is not
reset if one of the
above events occurs.
SCSI bus A is not
reset if a storage
module is inserted or
removed.