Marantz SR-73 - Marantz SR-73 Maintenance and Troubleshooting; Remote Control Operation and Maintenance; Resolving General Malfunctions; Installation Notes and Memory Backup

Operation of Remote Control
1. Remote control
The distance between the transmitter of the remote control and the IR
SENSOR of the AV Surround Stereo Receiver should be less than about
5 metres. If the transmitter is pointed in a direction other than the IR
SENSOR or if there is an obstacle between them, remote control may not
be possible.
Remote-controllable range
Receiver(SR-73)
Approx. 5m
Remote control (RC-73SR)
2. Loading batteries
The life of the batteries used with the remote control is about one year
with normal use. Replace batteries earlier if you notice that they are
getting weak.
@ Remove the back cover.
@) Insert batteries (AAA type ) with correct
(+) and (-) polarity.
3) Close until it clicks.
NOTE
The batteries should be replaced within 10 minutes. If replacement
takes more than 10 minutes, the previously learned codes may be
cleared.
NOTES ON INSTALLATION
When the component is installed on or near other audio equipment hum
sometimes occurs. Position the equipment so that the hum ceases.
Always install the unit horizontally.
This model incorporates a high-performance microprocessor.. In the
event of a malfunction due to static electricity, etc., turn off the POWER
switch, and after 30 seconds turn it on again.
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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
With proper care and cleaning, the exterior finish of your SR-73 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, ina ratio of one part detergent
to six parts water;
— dip 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.
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 the 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 restored to normal operation.
Inthe event of difficulty, consult your dealer or write directly to the nearest
location to you that is listed on the Marantz Authorized Service Station list.
Please quote the model and serial number of the equipment and give full
description of what you think is abnormal about the equipment’s behav-
jour.
TROUBLESHOOTING
GENERAL MALFUNCTION
If the equipment malfunctions, this may be because an electrostatic
discharge or AC line interference has corrupted the information in the
equipment memory circuits. Therefore:
— disconnect the plug from the AC line supply;
- after waiting at least three minutes, reconnect the plug to the AC line
supply,
- attempt to operate the equipment again.
Memory backup
If a power outage occurs or the power cord is accidentally
unplugged, the SR-73 is equipped with a back-up function to
prevent memory data such as the preset memory from being
erased.
The memory functions are backed up for up to about one week.