Marantz PM-80 - Troubleshooting; No Power or Indicators; No Sound Operation; Speaker and Hum Issues

@ No signal is output at the REC OUT jacks when the
REC SELECTOR switch is set to OFF. There is no need
to output a signal at the REC OUT jacks unless when
recording it on tape(s). Therefore, it is recommended to
set the switch usually to OFF so that the signal path
inside the unit can be shortened and crosstalk, etc., can
be reduced.
@ When the REC SELECTOR switch is set to SOURCE,
the signal selected with the INPUT SELECTOR switch
can be recorded on tape(s).
@ When the REC SELECTOR switch is set to TUNER,
the signal input at the TUNER jacks can be recorded on
tape(s).
@ When the REC SELECTOR switch is set to a position
other than SOURCE, a tape can be copied or the signal
input at the TUNER jacks can be recorded regardless
of the setting of the INPUT SELECTOR switch.
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 PM-80 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, bezine, 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 cloth 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.
FUSE REPLACEMENT
If a fuse blows, unplug the equipment from the mains
supply. Replace the fuse only with a fuse of the same type
and rating. Replacing the fuse with one of a higher rating or
a slower action will not protect the equipment and will
invalidate the warranty. If the replacement fuse blows again
after the equipment is turned on, the equipment should be
taken to an authorized service facility.
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 opera-
tion.
inthe 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 togther with a full
description of what you think is abnormal about the
equipment’s behaviour.
TROUBLESHOOTING
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 distributor.
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 switches and VO-
LUME 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
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.
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. !f 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.