CRU DE75, Frame Only, 68-pin, U160 6058-1000-0000 Dépliant

Option Pins:
Remote Unit ID Selection – Pins 1-8 of this connector provide 
unit SCSI ID selection for the computer system or expansion 
chassis. For remote ID selection through an expansion chas-
sis, an appropriate cable must be attached to these pins and 
the unit ID must be sent to “0”. The unit ID can be set with 
a rotating switch located inside the receiving frame. See 
“Selecting the Unit ID Number Below.”

Disable Termination (DT) – A factory-installed jumper on 
these pins disables termination. Remove this jumper if the 
drive is physically located at the end of a SCSI daisy chain.

Remote Activity LED (RLED) – These pins provide power 
for a remote LED device activity indicator (Pin 11=Cathode, 
Pin 12 =Anode).

Enable Termination Power To/From SCSI Bus (TPWR) – 
This jumper is installed at the factory. 

Figure 1: Drive Installation Overview

Figure below illustrates a typical SCSI ID select connec-
tion to a drive with 2mm ID select pins. The wires on the 
wire harness connect to the positive pin (or signal pins) 
on the disk drive. In some cases, the drive manufacturer 
will label the signal pins as Pin 1, 3, 5, 7, (instead of 0, 
1, 2, 3 as shown in figure below). Also, in some cases, 
the even-numbered Pins 2, 4, 6 are used for Ground.

Attached the ID select cable to the drive using the 2mm 
connectors. Align the “ID0” pin with the black wire. 
Attach the 1.25mm connector on the other end of the ID 
select cable to the 1.25mm connector (J3B) provided on 
the signal distribution board, located inside the carrier. 
Refer to the manufacturer’s documentation to disable 
termination on the drive.

Figure 2: Receiving Frame Motherboard