3-2
ProRACK 8020
Passthru Outer Facing
The outer facing is also a simple circuit board. It is actually
mounted on the chassis, directly behind the drive bay. The
board passes SCSI data to and from the host system, and
LED power and the power supply from the host’s power
supplies.
Mounting the Drive in the Tray
1) Attach one end of the two-pin power cable to the LED
connector on the drive, and the other end to the passthru
board’s LED connector, JP3.
2) Attach the passthru board’s power cable to the power
connector on the SCSI drive.
3) Use the short SCSI data cable to attach to the drive’s data
connector to the data connector, J2, on the passthru
board. The red wire connects to pin 1.
4) Insert the drive into the tray, component side face down.
Line up the drive’s screw holes with those of the tray.
5) Attach the drive to the tray with four Phillips head
screws.
1
D3
1
1
J2
JP8
Power Connector
SCSI CONTROL COPYRIGHT CSS LABS (C) 1993 MADE IN USA
1
SCSI Data Connector
Figure 3-2: The SCSI Passthru, Outer Facing
