5190/5194 Modular Tape Subsystem Manual

Installing the Modular Tape Subsystem
5190/5194 Modular Tape Subsystem Manual—426878-002
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Connecting and Routing the AC Power Cords
3. Holding the BEB enclosure with two hands, align the captive wing nut and the
50-pin connector on the side of the BEB with the screw hole and the uncapped
SCSI connector on the rear of the drive CRU. Plug the enclosure into the
connector.
4. Push and tighten the wing nut to secure the BEB enclosure to the rear of the drive
CRU.
Connecting and Routing the AC Power Cords
An AC power cord connects the power supply in each tape drive CRU to the external
power source. Before installing an AC power cord, you must remove the rear bezel
door of all the modules in the stack to access the extrusion channels. In a computer-
room installation, the excess portion of the AC power cord can be dropped beneath the
floor through a cutout in the floor tile. In a non-computer-room installation, AC power
cords are routed through the extrusion channels in the rear support members of the
modules and held in place by the extrusion guides.
Use the following procedure to connect an AC power cord to each tape drive CRU in
the modular tape subsystem. This procedure assumes a non-computer-room
installation. In a modular tape subsystem with two or three modules, start with the
topmost module and work down.
1. Remove the rear bezel door from the module by following the procedure described
in Opening and Removing the Rear Bezel Door on page 3-23.
2. Locate the extrusion guides and tie wraps shipped in the plastic bag, and set them
aside. After AC power cords and cables have been routed into the extrusion
channels, the extrusion guides are used to secure the cords and cables. Tie wraps
are included to secure cables to the hinge mounts at the base of the module (see
Figure 3-18 on page 3-32).
3. Make sure the AC power switch on the tape drive CRU is set to the OFF (0)
position. This prevents power from being supplied to the tape drive accidentally.
4. Plug the AC power cord connector into the AC power receptacle at the rear of the
tape drive CRU (see Figure 3-14).
5. Route the AC power cord behind the BEB, if installed, and into the lower cable
clamp on the module side wall. Do not fasten the cable clamp. Route the cord into
the extrusion channel at the point where the cutout in the rear bezel door allows
the cord to pass into the channel when the door is closed. This cutout prevents the
door from pinching the cord when the door is closed. Route the cord downward
into the channel until you reach the channel bottom.
6. Plug the other end of the AC power cord into the external power source. For
information about power requirements, see AC Power Requirements on page 3-9.
7. Repeat Steps 3 through 6, if necessary, for the second tape drive CRU in the
module.