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CARE AND MAINTENANCE
This section describes the care and maintenance tasks that must be
performed to optimize-the operation of your Marantz equipment.
CLEANING OF EQUIPMENT EXTERNAL SURFACES
' The exterior finish of your SC-80 will last indefinitely with proper care
and cleaning. Never use scouring pads, steel wool, scouring powders
or harsh chemical agents (€.g., lye solution), alcohol, thinners, benzine,
insecticide or other volatile substances as these will mar the finish of the
equipment. Likewise, never use cloths containing chemical sub-
stances. !f the equipment gets dirty. wipe the external surfaces with a
soft, lint-free Cloth.
if the equioment becomes heavily soiled:
— dilute some washing up liquid in water, in a ratio of one part -
detergent to six parts water
— dip a soft, lint free in the solution and wring the cloth out until itis
damp.
:
— wipe the equipment with the damp cloth.
— dry the equipment by wiping it with a dry cloth.
REPAIRS
Only the most competent and qualified service technicians should be
allowed 'to service the equipment. The Marantz company and its
factory-trained warranty station personnel have the knowledge and
special facilities needed for repair and calibration of this precision
equipment. After the warranty period has expired, repairs will be
performed for a charge if the equipment can be returned to normal
operation.
In the event of difficulty, refer to your dealer or write directly to the
nearest location to you that is listed on the Marantz Authorised Service
Station list. If writing, please include the model and serial number
of the
equipment together with a full description of what you think is abnormal
_ about the equipment's behavior.
TROUBLE SHOOTING
In case of trouble or abnormal operation of the unit, check the following
before contacting service personnel. What may seem to be a serious
malfunction. is often the result of a.simple. operation mistake. If. the
trouble persists after checking the following, please contact your dealer
or nearest Maraniz distributor.
The amplifier does not operate and the indicators do not light.
1. Check to see if the power cord j is inserted properly into the power
outlet.
'
;
,
The indicators light but the amplifier does not operate.
1...Check to see if the SELECTOR switches and VOLUMEcontrol are
properly set.
Sound is heard from only one of the speakers.
1. Check to see if the BALANCE control is properly set.
2. Switch the power of the unit to OFF, and change the connections of
the left and right speaker cords. If the sound from the same speaker
is still not heard, its connection cord or the speaker itself may be
defective.
5
Considerable hum noise is heard when the turntable is played.
1. Check to see if the plugs from the turntable are properly connected
to the PHONO jacks.
2. Connect the grounding wire of the turntable to the GND terminal on
the rear panel of this unit. If it has already been connected, try
removing it.
3. Check to make sure that the phono cartridge is attached securely to
the tonearm.
4. Unplug the power cord and plug it in again after inverting the
orientation of the blades.
What happens when the SOURCE DIRECT switch is pressed:
The audio signal from the program source is directed to the bypass
circuit, which sends the signal through the minimum required circuit
length to minimize signal degradation in the signal path.
Therefore, when the SOURCE DIRECT switch is pressed, the signals
from the TAPE 1and TAPE 2 jacks are not output to.the speakers or
headphones.
To output the tape deck signals, the SOURCE DIRECT switch should
be set to OFF.
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