4
Unpacking the MC75
Caution
:
To prevent damage to the MC75
Tubes during shipping, there is a
special foam insert surrounding the
Tubes of the Power Amplifier.
The Foam Insert must be
removed from the MC75 be-
fore connecting the AC Pow-
er Supply Cord to the power
amplifier.
Failure to do so has the po-
tential of a Fire Hazard,
resulting in damage to the
MC75 and the surrounding
environment.
Follow these instructions for
removal of the packing foam
before connecting the AC
Power Supply Cord to the
MC75.
In order to remove the foam insert sur-
rounding the tubes on the MC75, it is necessary
to temporarily remove the Tube Cover. After
the foam insert is removed, the Tube Cover is
re-installed and should not be removed. The
cover provides protection from the hazardous
voltages inside the MC75. The MC75 has no
Figure 2
Tube Cover
user serviceable parts, including the tubes. If
repairs are needed they must be performed by
an authorized McIntosh Service Agency.
1. Orient the MC75 so the Front is facing you and
remove the Warning Sheet. Refer to figure 1.
2. Using a Philips Head #2 screw driver, remove the
Tube Cover Screw securing the Tube Cover to the
chassis on each side of the MC75. Refer to figure
2. Carefully lift up and remove the Tube Cover
from the MC75. Refer to figure 3.
3. Place the Tube Cover and the previously removed
chassis screws in a safe location, as the Tube
Cover will be reinstalled.
Figure 1
Tube Cover
Remove Foam
Insert located
under the Tube
Cover
4. Carefully lift up and remove the Foam Insert from
the MC75 exposing the Tubes. Refer to figures 4
and 5.
5. Carefully reinstall the previously removed Tube
Cover using a Tube Cover Screw on each side of
the MC75. Refer to figures 6, 7A, 7B and 8.
Note: Only use the chassis screws supplied with the
MC75. If you can not find the chassis screws,
contact the McIntosh Parts Department for
replacements.
6. Save the Foam Insert and Warning Sheet with the
MC75 Shipping Carton for possible future use.
Remove the
Warning Sheet
Tube Cover
Screw
Tube Cover
Tube Cover
Screw
TO AVOID A FIRE HAZARD, THE FOAM INSERT
OVER THE VACUUM TUBES MUST BE REMOVED
PRIOR TO CONNECTING THE A.C. MAINS POWER
SUPPLY CORD AND OPERATING THIS PRODUCT.
WARNING
REFER TO PAGE 3 IN THE MC75 OWNER’S
MANUAL FOR INSTRUCTIONS.