3M DELTA Series - Ins Alla Ion and Opera Ion; A Unpacking. Handling, and; Special Consideration for Cooling

SECTION II - INSTALLATION AND OPERATION
A. UNPACKING, HANDLING AND
PRE-INSTALLATION CHECKOUT
Note: External connectors, power cord, and inter 
connect cable, it applicable, are packed separately
in the unit carton. Remove these and place with the
unit. Retain all packing material tor damage claim
or reshipment purposes. Claims for damage should
be filed with the carrier no later than 10 days after
receipt.
Place the unit in an area suitable for mainte 
nance. Remove the top and bottom covers and
make a physical inspection of the unit Note: The
main power fuse is in a packet taped to the bottom
cover. Remove the packet and install the fuse in the
rear panel fuseholder.
All units, except D-III, have a protective foam
sheet to hold the PCB's in place. Also, all reproduc 
ers have protective foam around the motor. Remove
the foam and place it with the other packing mate 
rial.
Unplug and reseat the PCB's to insure connec 
tion. Inspect all internal connectors to make sure
they are securely fastened and properly seated.
Review the final inspection tags to insure that
this unit meets your in-house standards for equaliza 
tion, levels and tape type. Finally, make a note in
your companies' permanent records of the date of
receipt, model and serial numbers. You may need
this information for future reference.
B. INSTALLATION
The Delta Series is designed in incremental sizes
for convenient installation into existing spaces. Three
Figure 2-1
basic "sizes" are designed on a UNIT size of 5-7/32"
high (without feet) by 5-9/16" wide. Therefore, three
single UNIT widths may be installed side by side in a
standard 19" rack opening. Likewise, two single
UNIT height machines may be stacked next to a
double unit height component. The preceding illus 
tration demonstrates the unit concept.
ITC Delta Series machines are designed as a
very flexible, high performance cartridge system.
Reproducers may be interconnected to recording
amplifiers with a single cable. The four units of the
Delta system allow user flexibility previously un 
achievable in a cartridge system. They may be
mixed or matched to perform a variety of tasks. The
following table lists the four Delta system units and
their primary useage.
Delta I Single Deck Reproducer, "AA" size car 
tridges only;
Delta II Single Deck Reproducer, "AA" or "BB"
or "CC" sized cartridges;
Delta III Three Deck Reproducer, "AA" size car 
tridge only;
Delta IV Record Amplifier, may be used with
Deltas I, II, or III.
Available as an option, the Universal Rack
Mount URM-000 1 allows the user to install Delta sys 
tem units in any configuration for existing 19" racks.
Variations in the rack mount design are discussed in
the URM-000 1 instruction sheet.
- SPECIAL CONSIDERATION FOR COOLING-
The Delta Series is designed using state of the art
microprocessor and analog technology. Due to the
compactness of the units, and the high density
packaging, these units generate heat that must not
be allowed to accumulate. Adequate ambient air
circulation is required in order to prevent prema 
ture heat related failures. As a general rule, no
forced air cooling is required, except in D III,
unless the units will be installed in a fully enclosed
housing. It is normal for these units to radiate heat
through the tops and this air must be allowed to
escape. Likewise, ventilation holes in the tops and
bottoms should not be restricted. Vertical stacking of
Delta units should pose no problems so long as the
ventilation holes are not blocked. Desk-mounted
units should not have their feet removed for this
2-1