Marantz PM4400 - Manual (Page 9)

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English
English
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 PM4400 will last indefinitely with proper
care and cleaning. Never use scouring pads, steel wool, scouring
powders or harsh chemical agents (e.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 substances. If the equipment gets
dirty. wipe the external surfaces with a soft, lint-free cloth.
If the equipment 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
it is 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 behaviour.
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 Marantz distribu-
tor.
The amplifier does not operate and the indicators do not
light.
1. Check to see if the power cord is inserted properly into the
power outlet.
The indicators light but the amplifier does not operate.
1. Check to see if the SELECTOR,SPEAKER switches and
VOLUME control 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 connec-
tions 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.
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.
Remote control operation is not possible.
1. Is the remote control unit's transmitter pointed correctly at the
remote sensor on the front of the Amplifier?
Or, is there an obstruction between the transmitter and the
remote sensor?
2. Are the batteries in the remote control unit exhausted?
3. Is there another strong light (from a window, etc.) striking the
Amplifier remote sensor?
4. Is an RCA cord connected to the "REMOTE CONTROL IN"
jack on the Amplifier rear panel?