Care And Maintenance; Troubleshooting - Marantz PM7200 User Manual

CARE AND MAINTENANCE

This section describes care and maintenance that you must per-
form in order to make sure your Marantz amplifier performs at the
level for which it is designed. Be sure to unplug the amplifier from
the mains supply before any care and maintenance.
NORMAL CLEANING
The exterior of your amplifier will last indefinitely with proper care
and cleaning. For normal cleaning, wipe exterior surfaces with a
soft, lint-free cloth.
IMPORTANT:
Any of the following will mar the finish of your amplifier and should
never be used for cleaning.
— Scouring pads, steel wool, abrasive powders
— Harsh chemical agents (such as a lye solution)
— Alcohol, thinners, benzine, insecticide, or other volatile agents.
SPECIAL CLEANING
Should it amplifier ever become so soiled that normally cleaning is
not enough, use the following procedure for cleaning.
1. Prepare a cleaning solution of one part mild neutral liquid deter-
gent and six parts water.
2. Moisten a soft, lint-free cloth in the cleaning solution and then
wring out all excess moisture from the cloth.
3. Wipe off the amplifier with the damp cloth.
4. Dry the amplifier by wiping it with a soft dry cloth.
REPAIRS
Only the most competent and qualified serviced technicians should
be allowed to service this amplifier. Marantz and its factory-trained
warranty personnel have the special knowledge and facilities re-
quired for the repair and calibration of this amplifier. After expira-
tion of the warranty period, repairs can be performed for a separate
charge.
Whenever you experience problems, first try to solve the problem
yourself using the troubleshooting procedures provided on this page.
If this does not work, contact your original dealer or write directly to
your nearest service provider as listed on the Marantz Authorised
Service Station list. When you write, be sure to include the model
and serial number of your amplifier, together with a detailed
description of the problem.
PM7200U(ENG) Page 8

TROUBLESHOOTING

Whenever you have a problem with the amplifier, check the follow-
ing points before requesting service. What may seem to be a serious
malfunction is often the result of a simple operational error. If you
still have problems, contact your original dealer or write directly to
your nearest service provider as listed on the Marantz Authorised
Service Station list.
The amplifier does not operate and indicators do not light.
1. Check to see if the power cord is correctly inserted into a power
outlet.
Indicators light, but the amplifier does not operate.
1. Check the SELECTOR and VOLUME settings.
2. Check to see if the supplied connecting pins are correctly in-
serted into the PROCESSOR IN/OUT jacks.
Sound is being produced by only one speaker.
1. Check the BALANCE setting.
2. Turn off the amplifier and switch the connections of the left and
right speaker cords. If the same speaker still does not produce
sound, it probably means that the connection cord or the speaker
itself is defective.
Considerable humming is produced when playing from a
turntable.
1. Check to see if the plugs from the turntable are properly con-
nected to the amplifier's PHONO jacks.
2. Connect the turntable's ground wire to the GND terminal on the
rear panel of the amplifier. If the ground wire is already
connected, try disconnecting it.
3. Check to make sure that the turntable's phono cartridge is se-
curely attached to the tone arm.
Cannot perform remote operation.
1. Make sure the remote control unit's (RC8000PM) transmitter is
pointed directly as the amplifier's remote sensor when you per-
form a remote control unit operation.
2. Check for obstructions between the remote control unit's trans-
mitter and the amplifier's remote sensor.
3. Check the batteries of the remote control unit.
4. Make sure there is no strong light (from a window or other source)
shining on the amplifier's remote sensor.
5. Check to see if there is an RCA cord connected to the REMOTE
CONTROL IN jack on the amplifier's rear panel.
8
03.12.17, 11:18 AM Adobe PageMaker 6.5J/PPC