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6
ST3390N, ST3655N Installation Guide, Rev. A
Terminating
resistor
packs
(pin 1)
J9. Active/passive
termination jumper block
5
3
1
Circuit board
6
4
2
+2.85V to 110 ohms
Power and ground to
220/330 ohms
J6. Terminator power
source jumper block
3
1
Circuit
board
4
2
From SCSI connector
From power connector
J3. DC power connector
To SCSI connector only
From power connector
and to SCSI bus
Terminating resistors
not installed
Figure 1. Back view
J4. Interface
connector (pin 1)
J5. SCSI ID
jumper block
Ground
2
4
6
Circuit
MSB
LSB
board
Signal
1
3
5
SCSI ID = 0
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
Circuit board
+5V
+5V return
+12V return
+12V
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