McIntosh MR 77, Руководство пользователя

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Installation
Adequate ventilation extends the trouble-free life of
electronic instruments. It is generally found that each
10° centigrade (18° F) rise in temperature reduces the
life of electrical insulation by one half. Adequate venti-
lation is an inexpensive and effective means of prevent-
ing insulation breakdown that results from unneces-
sarily high operating temperatures. The direct benefit
of adequate ventilation is longer, trouble-free life.
Allow at least 15 inches deep x 17½ inches wide x 6
inches high for mounting the MR 77. Always allow for air
flow by either ventilation holes or space next to the
bottom of the tuner and a means for warm air to
escape at the top.
It is recommended that the MR 77 be mounted in a
normal or horizontal position. However, with adequate
ventilation the tuner can be mounted in any position.
To prepare the MR 77 for installation remove the
plastic protective covering. Turn the MR 77 upside down
so that it rests on its top on the shipping pallet. Remove
the four plastic feet fastened to the bottom of the
chassis.
Next, place the mounting brackets, the parts bag
and the mounting template at hand.
The PANLOC professional mounting design elimi-
nates the need for any shelf or bracket to support the
MR 77. It is completely supported by its own mounting
brackets.
The design of the mounting template allows you to
position or locate the cutout from the front or rear of
the panel to which the instrument is to be mounted.
Position the plastic mounting template over the area of
the panel to be cut out for installation.
If the cutout is to be located from the front of the panel,
begin at step 2. If the cutout is to be located from the
rear of the panel, begin here.
1. On the back of the cabinet panel, scribe a vertical
centerline through the exact center of the area in
which the cutout is to be made.
Place the template against the back of the panel and
match the template centerline with the centerline on
the cabinet panel.
Make sure that there is at least ¼ inch clearance be-
tween the bottom of the dashed line of the cutout
area on the template and any shelf or brace below
the proposed cutout.
Mark the two locating holes ("C" holes on the
mounting template).
Drill the two locating holes. Be certain the drill is
perpendicular to the panel.
Now position the template on the front of the panel
by aligning the "C" locating holes on the template
with the drill holes.
2