User`s manual

5-20
AS1040C-T/1040C-8 User's Manual
SCSI Controller Enable/
Disable (1040C-8 only)
Jumper JPA1 is used to enable or dis-
able the Adaptec AIC-7902W SCSI
controller. The default setting is on pins
1-2 to enable SCSI. See the table on
right for jumper settings.
SCSI Enable/Disable
Jumper Settings (JPA1)
Both Jumpers Defi nition
Pins 1-2 Enabled
Pins 2-3 Disabled
SCSI Termination Enable/
Disable (1040C-8 only)
Jumpers JPA2 and JPA3 are used to
enable or disable termination for SCSI
channels A and B, respectively. The
default setting is open to enable termi-
nation. See the table on right for pin
defi nitions.
Note: In order for the SCSI drives to
function properly, please do not change
the default setting (enabled) set by the
manufacturer.)
SCSI Term. Enable/Disable
Jumper Settings (JPA2/JPA3)
Jumper Setting Defi nition
Open Enabled
Closed Disabled
3rd Power Supply Fail Signal
Enable/Disable
The system can notify you in the event
of a power supply failure. This feature
assumes that three redundant power
supply units are installed in the chas-
sis. If you only have one or two power
supplies installed, you should disable
the function with the J3P header to pre-
vent false alarms. See the table on the
right for jumper settings.
3rd Power Supply Fail Signal
Jumper Settings (J3P)
Jumper Setting Defi nition
Open Disabled
Closed Enabled