Installation And Checkout; Introduction; Unpacking; Installation - Control Data Corporation BR8 SERIES Hardware Maintenance Manual

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INSTALLATION AND CHECKOUT 3
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3.1 INTRODUCTION
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This section provides the information and procedures necessary to put an FDD into
operation.
3.2 UNPACKING
Unpack FDD as follows:
a'. Cut banding and lift top half of styrofoam shell from unit.
b. Lift unit in polyethylene bag from bottom half of styrofoam shell and remove unit
from polyethylene bag.
During unpacking, care must be used so that any tools being used do not inflict damage
to the unit. As a unit is unpacked, inspect it for possible shipping damage. All claims
for this type of damage should be filed promptly with the carrier involved. If a claim
is filed for damages, save the original packing materials.
3.3 INSTALLATION
Install the FDD in the designated location in the host equipment.
3.4 CABLING AND CONNECTIONS
Connect the AC cable, 'I/O cable, and DC cable if applicable between the FDD and
host equipment.
3.4.1 INPUT-OUTPUT CABLE
The maximum cable length from connector to connector is 25 feet. All inputs and
outputs require pairs, one line for function, one for ground. The characteristic
impedance is typically 120 ohms.
The information relative to the I/O connector (Jl) and pin/signal assignments are
defined in Table 5-1, Figure 5-2, and Figure 5-3.
On
models designed for daisy-chain operation, the terminating resistor pack RMI
(See Figure 5-3) is to be installed in the end FDD (farthest from the controller) ONLY.
Terminators in more than one FDD during daisy-chain hookup may result in damage to
the controller.
For daisy-chain configurations, W32, W33, and W34 determine the FDD position in
the daisy-chain. W32 is used with the door unlock option. Therefore, to change the
position of the FDD in the daisy-chain, the jumpers must be unsoldered and moved to
the desired location, see Figure 5-3B. Optionally switch 81 (S2 if door unlock option
is included) is provided on the circuit board to enable changing the position of the FDD
in the daisy-chain by switch selection.
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