Nortel North American DMS-100 Instruction Manual page 139

1-124 Trouble locating and clearing procedures (continued)
Replacing a 14-in. disk drive unit
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297-8021-544 Standard 14.02 May 2001
You need two persons to perform this step. One person stands at the front of
the frame and the other person stands at the back of the frame.
The person at the front tilts the front of the DDU to a 45-degree angle. The
person at the back lifts the DDU into place on the slide rails. The back of the
DDU frame must butt against the stops of the slide rails.
Insert and secure the two retaining screws that hold the front cover of the
DDU to the frame.
To remove the slider assembly from the DDU that has faults, remove the two
screws that secure the slider assembly in place.
To mount the slider assembly to the replacement DDU, secure the two
mounting screws.
Connect the power cable from the power converter to the replacement DDU.
To make the connection, plug the end of the power cable with the free ground
lead to connector J3. Connector J3 is on the bottom of the main PCB on the
DDU.
Secure the ground lead to the PCB with the provided hardware.
Route the cable toward the back of the DDU. Route the cable along the upper
rail of the DDU frame on the coverter side of the DDU.
(continued)