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Service Manual
3-868-188-21(1)
Playing an MD right
away!
Portable MiniDisc Player
Charge the supplied rechargeable battery, before using it for the first
Operating instructions
time. Other choices are a dry battery and house current. For details, see
Mode d'emploi (au dos)
"Power Sources".
Stereo or monaural playback is automatically selected, depending on the
sound source.
1
Charge the rechargeable battery.
MZ-E90
After about 1.5 hours, charging ends and the lamp on the charger
TM
turns off. (To get maximum performance from battery, continue
Sony Corporation © 1999 Printed in Japan
charging it for another hour after the lamp turns off.)
• Model for USA, Canada and
— Reorient or relocate the receiving antenna.
to a wall outlet
WARNING
— Increase the separation between the
equipment and receiver.
To prevent fire or shock
— Connect the equipment into an outlet on a
circuit different from that to which the
hazard, do not expose
receiver is connected.
the unit to rain or
— Consult the dealer or an experienced
radio/TV technician for help.
moisture.
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following
To avoid electrical
two conditions: (1) This device may not cause
harmful interference, and (2) this device must
shock, do not open the
2
accept any interference received, including
Insert the rechargeable battery.
cabinet. Refer servicing
interference that may cause undesired
operation.
to qualified personnel
1 Slide open the battery
only.
You are cautioned that any changes or
modifications not expressly approved in this
Caution
manual could void your authority to operate
The use of optical instruments with this
this equipment.
product will increase eye hazard.
Listening for many hours at maximum
For customers in the United States
volume may damage your hearings.
and Canada
DISPOSAL OF NICKEL METAL
Information
HYDRIDE BATTERY.
NICKEL METAL HYDRIDE BATTERY.
IN NO EVENT SHALL SELLER BE LIABLE
DISPOSE OF PROPERLY.
FOR ANY DIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OF ANY
You can return your unwanted nickel metal
NATURE, OR LOSSES OR EXPENSES
hydride batteries to your nearest Sony Service
Center or Factory Service Center.
RESULTING FROM ANY DEFECTIVE
Note: In some areas the disposal of nickel
PRODUCT OR THE USE OF ANY
3
PRODUCT.
metal hydride batteries in household
Insert an MD.
or business trash may be prohibited.
MZ-E90
For the Sony Service Center nearest you call
1 Slide OPEN.
1-800-222-SONY (United States only)
For the Sony Factory Service Center nearest
you call 416-499-SONY (Canada only)
Caution: Do not handle damaged or leaking
nickel metal hydride battery.
This mark is valid for Russia only.
Certain countries may regulate disposal of the
For customers in Australia
battery used to power this product.
If the supply cord of the AC power adaptor is
Please consult with your local authority.
damaged, the AC power adaptor must be
"MD WALKMAN" is a trademark of Sony
returned to the manufacturer or his agent for
Corporation.
the cord to be replaced.
For customers in the United States
4
Owner's Record
Play an MD.
Welcome!
The model number is located at the bottom
and near the display and the serial number is
Welcome to the world of the MiniDisc! Here
located on the floor of the disc compartment.
are some of the capabilities and features
Record the serial number in the space
you'll discover with the new MiniDisc Player.
provided below. Refer to them whenever you
call upon your Sony dealer regarding this
• Small body almost the size of a MiniDisc
product.
jacket
Model No. MZ-E90
Ideal weight and size; fits in your shirt
Serial No.
pocket.
Remote
Information
• Upper and lower body made of new
control
This equipment has been tested and found to
developed high-rigidity magnesium
comply with the limits for a Class B digital
• Low power-consumption design enables
device, pursuant to Part 15 of the FCC Rules.
extended battery life.
These limits are designed to provide
• Simple "One-Touch Eject" function for
reasonable protection against harmful
easy MiniDisc handling
interference in a residential installation. This
A single slide of a switch on the side of the
equipment generates, uses, and can radiate
player causes the player lid to open and the
radio frequency energy and, if not installed
MiniDisc to eject.
and used in accordance with the instructions,
1 Connect the headphones to the remote control.
• Easy-to-operate headphones remote
may cause harmful interference to radio
control with backlit LCD
communications. However, there is no
2 Connect the headphones with the remote control to the i jack.
Keep the main unit in your pocket and
guarantee that interference will not occur in a
operate the MiniDisc player through the
3 Press > N (or press the control towards N/> or . on the remote
particular installation. If this equipment does
"slim stick" remote control. The LCD
cause harmful interference to radio or
displays disc and track information,
television reception, which can be determined
playback mode as well as battery
by turning the equipment off and on, the user
is encouraged to try to correct the interference
condition.
4 Press VOLUME +/– (or press VOL +/– on the remote control) to adjust the
by one or more of the following measures:
• Shock-resistant memory offsets up to 40
seconds of optical read errors.
To stop play, press x.
The OPR lamp on the player goes off. The display on the remote control disappears
after a while. When using the remote control, a long beep sounds in the headphones.
To
Do this (Beeps in the
headphones)
Pause
Press X on the remote
control. (Continuous
short beeps)
Press X on the remote
control again to
resume play.*
Find the
Press .once.
beginning of
Press the control
the current
towards . on the
track
remote control. (Three
short beeps)
Find the
Press . repeatedly.
beginning of
Press the control
the previous
towards . on the
tracks
remote control
repeatedly.
(Continuous three
short beeps)
Find the
Press > N once.
beginning of
Press the control
the next track
towards N/> on
• World model and model for other
the remote control.
continental Europe (Full charging
countries (Full charging takes 120
(Two short beeps)
takes 80 minutes.)
minutes.)
to a wall
Go backwards
Hold down ..
lamp
outlet
while
Press and hold the
lamp
playing*
1
control towards .
on the remote control.
Go forward
Hold down > N.
NH-14WM
while
Press and hold the
(supplied)
playing*
1
control towards
N/> on the
NH-14WM
remote control.
(supplied)
Remove the
Press x, and then
MD
slide OPEN.*
If playback does not start
Make sure the player is not locked. For
2 Insert the battery.
details, see "To lock the controls
(HOLD)".
compartment as shown in the
illustration.
For models supplied with the AC
plug adaptor
e
If the battery charger does not fit the wall
outlet, use the AC plug adaptor.
E
Make sure the + and
Display window while playing
– terminals are
back
correctly oriented.
For details, see "To know the track name
and time".
Track name*
3
or elapsed time of
the track being played
2 Insert an MD and press the lid down to
Track number
close.
Tips
• The OPR lamp on the player lights up on
the player during playback. When you
press x, the lamp goes off.
• The display on the remote control
disappears after a while after you have
pressed x.
Note
With label facing upward, insert disc in
Do not slide OPEN during playback. If you
direction of the arrow.
do, the lid opens and playback stops.
When using optional headphones
Use headphones with a stereo-miniplug.
You cannot use headphones with a
microplug.
3
x
1
OPR lamp
*
When you press . or > N on the
player during pause (X), the player
i jack
resumes playback.
4
If you hold down . or > N on the
player (or press and hold the control
towards . or N/> on the remote
control) during pause (X), you can fast
3
N/
4
forward/rewind without listening to the
>
playback sound.
.
2
*
2
Once you open the lid, the point to start
x
playback will change to the beginning of
1
the first track.
Player
*
3
Appears only with MDs that have been
electronically labeled.
Plug it in firmly all the way.
control).
The OPR lamp on the player lights up and the player starts to play the first track.
When using the remote control, a short beep sounds in the headphones.
volume.
The volume indicator appears on the remote control to allow you to check the
volume.
B Various ways of
To lock the controls (HOLD)
To prevent the buttons from being
playback
accidentally operated when you carry the
player, use this function.
Playing tracks repeatedly
HOLD
You can play tracks repeatedly in three ways
— all repeat, single repeat, and shuffle repeat.
1
PLAYMODE
HOLD
Press PLAYMODE while the player is playing
an MD.
Each time you press PLAYMODE, the play
mode indication changes as follows.
Slide HOLD on the player in the direction of
Play mode indication
the . to lock the controls of the unit.
Slide HOLD on the remote control in the
direction of the . to lock the controls of the
remote control.
(none) (normal play)
To emphasize bass
All the tracks are played once.
b
(DIGITAL MEGABASS)
m
The DIGITAL MEGABASS function
"F" (all repeat)
intensifies low frequency sound for richer
All the tracks are played repeatedly.
quality audio reproduction.
m
"F 1 " (single repeat)
A single track is played repeatedly.
•
•
•
0
1
2
m
DIGITAL MEGABASS
"F SHUF " (shuffle repeat)
All the tracks are played repeatedly in
random order.
2
Tips on playback
Set DIGITAL MEGABASS to 1 (weak) or
2 (strong).
To cancel the effect, set DIGITAL MEGABASS
To know the track name and time
to 0.
Press DISPLAY on the remote control while
the player is playing an MD.
Note
Each time you press DISPLAY, the display
If the sound becomes distorted when
changes as follows.
emphasizing bass, turn down the volume.
DISPLAY
To protect your hearing (AVLS)
The AVLS (Automatic Volume Limiter
System) function keeps down the maximum
volume to protect your ears.
Elapsed time
•
•
NORM
LIMIT
AVLS
b
Track number
m
Track name
Set AVLS to LIMIT.
The volume is kept at a moderate level, even
Track number
if you try to turn the volume above the
m
limited level.
Disc name
Number of tracks recorded on the MD
Note
Disc and track names appear only with MDs that
have been electronically labeled.
B Power sources
BAdditional information
On cleaning
• Clean the player casing with a soft cloth
You can use the player on a dry battery,
slightly moistened with water or a mild
Precautions
house current, or a Ni-MH rechargeable
detergent solution. Do not use any type of
battery.
abrasive pad, scouring powder or solvent
On safety
such as alcohol or benzene as it may mar
Do not put any foreign objects in the DC IN
the finish of the casing.
Using on a dry battery
1.5V jack.
• Wipe the disc cartridge with a dry cloth to
remove dirt.
1
• Dust on the lens may prevent the unit from
Insert one LR6 (size AA) alkaline battery
On power sources
operating properly. Be sure to close the
(not supplied) into the supplied battery
• For use in your house: Use the AC power
disc compartment lid after inserting or
case, and close the lid.
adaptor AC-E15L (not supplied). Do not
ejecting an MD.
use any other AC power adaptor since it
may cause the player to malfunction.
On dry batteries and the battery
carrying case
Incorrect battery usage may lead to leakage of
battery fluid or bursting batteries. To prevent
Polarity of the plug
such accidents, observe the following
precautions:
• If you are not going to use this player for a
• Install batteries with the + and – poles
long time, be sure to disconnect the power
Make sure the + and – terminals
aligned correctly.
supply (AC power adaptor, dry battery, or
are correctly oriented.
• Do not try to recharge dry batteries.
rechargeable battery). To remove the AC
• When the player is not to be used for a long
2
power adaptor from the wall outlet, grasp
Attach the battery case to the player.
time, be sure to remove the batteries.
the adaptor plug itself; never pull the cord.
• If a battery leak should develop, carefully
and thoroughly wipe away battery fluid
On charging
from the battery compartment before
• Be sure to use the supplied battery charger.
inserting new ones.
• Charging time may vary depending on the
• Do not carry the dry battery in your pocket
battery condition.
or a bag, etc., with metallic objects such as
• When you use the battery for the first time
key rings. The terminals of the battery or
or after a long period of disuse, the battery
the battery carrying case may heat up from
life may be shorter. In this case, charge and
a short-circuit and can be dangerous.
discharge the battery several times. The
battery life will be restored.
On mechanical noise
• If the rechargeable battery capacity
The player gives out mechanical noise while
becomes half the normal life, replace it with
operating, which is caused by the power-
Turn towards LOCK.
a new one.
saving system of the player. This is not a
To release the battery case,
• Remove the rechargeable battery when the
malfunction.
turn towards RELEASE.
unit is not to be used for a long time. Do
not carry the rechargeable battery in your
If you have any questions or problems
When to replace or charge the batteries
pocket or a bag, etc., with metallic objects
concerning your player, please consult your
You can check the battery condition with the
such as key rings.
nearest Sony dealer.
battery indication which is displayed while using
the player.
On the battery case attachment
t
Battery power decreasing
terminals on the main unit
v
• Do not short-circuit the battery case
r
Weak batteries.
attachment terminals on the main unit with
v
metallic objects, etc., when the rechargeable
e
The batteries have gone out. "LOW
battery is inserted, as this may cause heat
BATT" flashes in the display on the
and can be dangerous.
remote control, and the power goes off.
• When carrying the player in a bag, be sure
to put it in the supplied carrying pouch.
Battery life*
On heat build-up
Batteries
Playback
Heat may build up in the player if it is used
Ni-MH
Approx. 21 hours**
for an extended period of time. In this case,
rechargeable battery
leave the player to cool down.
(NH-14WM)
On installation
One LR6 (size AA)
Approx. 31 hours
• Never use the player where it will be
alkaline battery
subjected to extremes of light, temperature,
moisture or vibration.
One LR6 (size AA)
Approx. 56 hours**
• Never wrap the player in anything when it
alkaline battery
is being used with the AC power adaptor.
and a Ni-MH
Heat build-up in the player may cause
rechargeable
malfunction or injury.
battery
(NH-14WM)
On the headphones
* The battery life may be shorter depending on
Road safety
operating conditions and the temperature of
Do not use headphones while driving,
the location.
cycling, or operating any motorized vehicle. It
** With a fully charged battery
may create a traffic hazard and is illegal in
many areas. It can also be potentially
dangerous to play your player at high volume
Using on house current
while walking, especially at pedestrian
crossings. You should exercise extreme
caution or discontinue use in potentially
Remove the rechargeable battery when using
the player on house current.
hazardous situations.
1
Preventing hearing damage
Attach the supplied battery case to the
Avoid using headphones at high volume.
player.
Hearing experts advise against continuous,
2
loud and extended play. If you experience a
Connect the AC-E15L AC power adaptor
ringing in your ears, reduce the volume or
(not supplied) to the DC IN 1.5V jack of
discontinue use.
the battery case.
Caring for others
3
Connect the AC power adaptor to a wall
Keep the volume at a moderate level. This
outlet.
will allow you to hear outside sounds and to
be considerate of the people around you.
to a wall outlet
On the MiniDisc cartridge
• Do not touch the internal disc directly.
Forcing the shutter open may damage the
internal disc.
• Do not place the cartridge where it will be
subjected to light, temperature, moisture or
dust.
to DC IN 1.5V jack
Note
The battery indication is displayed while using
the AC power adaptor.
Troubleshooting
Specifications
Should any problem persist after you have
System
made these checks, consult your nearest Sony
Audio playing system
dealer.
MiniDisc digital audio system
Laser diode properties
The player does not work or works
Material: GaAlAs
poorly.
Wavelength: = 790 nm
Emission duration: continuous
• You tried to play with no disc in the
Laser output: less than 44.6 µW*
player ("NO DISC" flashes on the
* This output is the value measured at a distance
remote control).
of 200 mm from the objective lens surface on
b Insert an MD.
the optical pick-up block with 7 mm aperture.
•The hold function is activated and the
Revolutions
controls are locked. (If you press any of
600 rpm to 2250 rpm
the operation buttons on the player,
Error correction
"HOLD" flashes on the remote control.)
Advanced Cross Interleave Reed Solomon Code
b Slide HOLD against the direction of
(ACIRC)
the arrow to release the hold
Sampling frequency
function.
44.1 kHz
• Moisture has condensed inside the
Coding
player.
Adaptive TRansform Acoustic Coding (ATRAC)
b Take the MD out and leave the
Modulation system
player's lid open for several hours
EFM (Eight to Fourteen Modulation)
Number of channels
until the moisture evaporates.
2 stereo channels
• The rechargeable battery or dry battery
1 monaural channel
is weak ("LOW BATT" flashes on the
Frequency response
remote control).
20 to 20,000 Hz ± 3 dB
b Replace the dry battery or recharge
Wow and Flutter
the battery.
Below measurable limit
• The rechargeable battery or dry battery
Outputs
has been installed incorrectly.
Headphones: stereo mini-jack, maximum output
b Install the battery with correct
level 5 mW + 5 mW, load impedance 16 ohms
polarity.
• An MD with no recording on it is
General
inserted ("BLANKDISC" flashes on the
Power requirements
remote control).
Nickel metal hydride rechargeable battery
b Insert a recorded MD.
NH-14WM (supplied)
• The player cannot read the disc (it's
One LR6 (size AA) battery (not supplied)
scratched or dirty) ("DISC ERR" flashes
Sony AC Power Adaptor AC-E15L* (not
on the remote control).
supplied) connected to the DC IN 1.5V jack
Battery operation time
b Reinsert or replace the disc.
See "When to replace or charge the batteries"
• While operating, the player received a
mechanical shock, too much static,
Dimensions
Approx. 78.4 13.5 71.5 mm (w/h/d)
abnormal power voltage caused by
(3
1
/
9
/
2
7
/
in.) not including projecting
lightning etc.
8
16
8
parts and controls
b Restart as follows.
Mass
1 Disconnect all the power sources.
Approx. 70 g (2.5 oz.) the player only
2 Leave the player for about
Approx. 113 g (4.0 oz.) incl. a premastered MD
30 seconds.
and a nickel metal hydride rechargeable battery
3 Connect the power source.
NH-14WM
Supplied accessories
The MD is not played normally.
Battery Charger (1)
Rechargeable battery (1)
• The player is set to the repeat mode
Rechargeable battery carrying case (1)
("F" is displayed on the remote
Headphones with a remote control (1)
control).
Dry battery case (1)
b Press PLAYMODE repeatedly until
Carrying pouch (1)
"F" disappears, then start
AC Plug Adaptor (1) (World model only)
playing.
Optional accessories
AC-E15L AC power adaptor* (except for
An MD is not played from the first track.
Australia)
• Disc playing stopped before it came to
MDR-series Stereo headphones**
the last track.
SRS-series Sony Active Speakers
b Press . repeatedly or eject and
reinsert the MD once to go back to
* The operative voltage for the AC power
the beginning of the disc, and restart
adaptor varies depending upon the country in
playing after checking the track
which it is sold. Therefore, purchase the AC
number in the display.
power adaptor in the country you intend to
use it.
Playback sound skips.
** Whether you should plug the headphones
• The player is placed where it receives
directly to the i jack on the main unit or to a
continuous vibration.
remote control, use only headphones with
b Put the player on a stable place.
stereo mini plugs.
• A very short track may cause sound to
skip.
stereo mini plugs
Sound has a lot of static.
• Strong magnetism from a television or
such device is interfering with
operation.
b Move the player away from the
Your dealer may not handle some of the above
source of strong magnetism.
listed accessories. Please ask the dealer for
detailed information about the accessories in
your country.
The rechargeable battery does not start
charging (in case of a charger with a lid).
• The lid of the battery charger is not
US and foreign patents licensed from Dolby
closed properly.
Laboratories Licensing Corporation.
b Close the lid and slide the lock.
Design and specifications are subject to change
No sound comes through the
without notice.
headphones.
• The headphones plug is not firmly
connected.
b Connect the headphones plug firmly
to the remote control.
b Connect the headphones plug firmly
to the i jack.
• Volume is too low.
b Adjust the volume by pressing
VOLUME +/– (VOL +/– on the
remote control).
• AVLS is on.
b Slide AVLS to NORM.
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