Marantz CD50 - Page 10

ADDITIONAL INFORMATION
i i a
MAINTENANCE
REPAIRS
Discs
Although both sides of a disc are protected by a special coating, it is still
advisable to treat the discs with care:
@ Never leave discs lying around, put them back in their holders
immediately after use.
@ Never write on the printed side of the disc!
@ Do not attach any stickers to the disc.
@ Keep the shiny surface of the disc clean. Use a soft lint-free cloth and
always wipe the disc in a straight line from centre to edge. You may
breathe lightly on the disc first.
NOTE!
Cleaning agents for conventional records are not suitable for cleaning a
Compact Disc. Detergents or abrasive cleaning agents should not be used
either.
The player
The player mechanism is fitted with self-lubricating bearings and must not
be oiled or greased.
A chamois leather slightly moistened with water is sufficient for cleaning the
player. Do not use cleaning agents containing alcohol, spirit, ammonia or
abrasives.
The disc tray should be kept free of dust.
IN CASE OF DIFFICULTY
If you suspect that your CD player is faulty, first check the following items
before contacting your dealer or the nearest Marantz Service Centre.
Disc does not rotate
@ Check that both shipping clamps have been removed.
@ Check that the mains lead is properly connected.
@ Check that the CD player is switched on.
@ Check that the disc is not placed upside down. (The disc should be
placed with the label face up.)
@ Check that the disc is not dirty.
@ Check that the disc has no scratches.
@ Check that the disc is not warped.
Disc rotates but no sound is heard
@ Check the connections between the CD player, amplifier and speakers.
@ Check that the amplifier is switched on.
@ Check that the volume control of the amplifier is not set to the minimum
position.
@ Check that the source selector of the amplifier is set to CD, AUX or
whichever position corresponds to the CD player.
Sound is noisy or interrupted intermittently
@ Check for dirt on the disc.
@ Check the disc for large scratches.
@ Check the disc for warps.
@ Check the connections between the CD player, amplifier and speakers.
The player does not react to the commands from the remote control
handset
@ The batteries are low and the distance to the player was too great, or you
did not aim accurately enough in the direction of the player.
@ The batteries are flat.
In
the
event
of
difficulty
please
refer
to
your
local
dealer
or
write
directly
to
your
local
Marantz
Authorized
Service
Centre.
The
names
and
addresses
are
listed
on
the
back
page.
Please
quote
the
mode!
and
serial
number
of
your
CD
player
and
enclose
a
full
description
of
what
you
feel
is
abnormal
in
its
behaviour.
Repacking for shipment
Should
it
become
necessary
to
repack
the
CD
player
for
shipment
to
an
Authorized
Service
Centre,
or
elsewhere,
please
observe
the
following
precautions:
@ Refit the two shipping clamps on the underside of the player.
@ Pack the unit carefully, using the original packaging material.
@
Ship
viaa
reputable
carrier
(do
not
use
Parcel
Post)
and
obtain
a
shipping
receipt
from
the
carrier.
e@ Remember to include your return address on the shipping label.
@ Enclose as detailed a description of the problem as possible.
TECHNICAL DATA
Typical audio performance
Number of channels: 2
Frequency range: 2-20 000 Hz
Phase linearity: +0.5°
Dynamic range: 96 dB
Signal-to-noise ratio: > 105 dB
Channel separation: > 105 dB
Total harmonic distortion: <0.002% (1 KHz)
Wow and flutter: quartz crystal precision
D/A
conversion:
quadruple
oversampling
(176.4
kHz)
with
digital
filter
and
two
16-bit
D/A
converters
Error correction system: Cross Interleaved Reed Solomon Code (CIRC)
Optical readout system (laser pick-up)
Laser: semi-conductor AlGaAs
Wavelength: 780 nm
Signal format
Sampling frequency: 44.1 kHz
Quantization: 16 bit linear/channel
Power supply
Mains voltage: see type plate at rear of player
Mains frequencies: 50 and 60 Hz
Power consumption: 20 W approx.
Safety requirements: IEC
Cabinet, general
Material/finish: metal and polystyrene with decorative trim
Dimensions (w x hx d): 420 x 100 x 280 mm
Weight: 4,7 kg approx.
Disc
Diameter: 80/120 mm
Thickness: 1.2 mm
Direction of rotation (seen from reading side): anti-clockwise
Scanning velocity: 1.2-1.4 m/s
Rotation speed: 500-200 rpm
Playing time (theoretical): 74 min (stereo)
Track pitch: 1.6 wm
Material: plastic
The right is reserved to change data if necessary
This Compact Disc player complies with the radio interference
requirements as laid down in EC (European Community) regulations.