User`s manual
SC747 Chassis Manual
D-13
D-14 SCA-M942 Front Jumpers and Pin Denitions
JP24
JP21
JP18
JP30
JP29
Figure X-4: SCA-M942 Front Jumpers
*The buzzer sound indicates that a condition requiring immediate attention has
occurred.
The buzzer alarm is triggered by the following conditions:
1. Hard drive failure
2. Fan failure
3. System temperature over 45º Celsius.
Jumper Settings
Jumper Jumper Settings Note
JP18
Open (jumper off) Disabled (Default)
Close (jumper on) Enabled
Buzzer reset*
JP21
Open (jumper off) Disabled
Close (jumper on) Enabled (Default)
SCSI termination
JP24
1-2: SCSI IDs 0,1,2,3,4 (Default)
2-3: SCSI IDs 9, 10, 11, 12, 13
SCSI ID selection
JP29
1-2: ID6 (Default)
2-3: ID8
GEM 318 IDs
JP30
1-2: Enabled (Default) Alarm will sound if no fan is
present
2-3: Disabled
Fan