System Fidelity ST-370 Manual

Notes on environmental protection:
At the end of its useful life, this product must not be disposed off with regular household
waste, but must be returned to a collection point for a recycling of electric and electronic
equipment. The symbols on the product, user manuals and packaging point this out. The
materials can be reused in accordance to their markings. Through re-use, recycling of
raw materials or other form of recycling of old products, you are making an important
contribution to the protection of our environment. Your local administrative office can
advice you of the responsible waste disposal points.

ACCESSORIES
Accessories
1 x ST-370 FM/AM RDS Stereo Tuner
1 x Remote control
2 x Batteries (Optional)
1 x Operation Manual
This operation manual supplies all the information that you need to have about your
System Fidelity stereo tuner. Please read this operation manual carefully before you start
using the unit!
CONTENTS
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ACCESSORIES
CONTENTS
SAFETY PRECAUTIONS
IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT INFORMATION
CONNECTIONS TO THE MAINS
REMOTE CONTROL
FRONT/REAR PANEL
AUDIO CONNECTIONS
OPERATION AND FUNCTIONS
TROUBLESHOOTING
TECHNICAL SPECIFICATIONS

IMPORTANT SAFETY INSTRUCTIONS
WARNING: IT IS IMPORTANT THAT YOU READ AND OBSERVE BOTH THE INSTRUCTIONS IN THIS
MANUAL AND THE INSTRUCTIONS ON THE UNIT. KEEP THIS MANUAL FOR FUTURE REFERENCE .
This unit was designed and manufactured with a view to providing maximum safety for the user.
Incorrect use of the unit may cause electrical shock or fire. The protection devices built into this unit
will protect the user if the procedures below are observed in connection with installation, use and
repair. This unit is fully electronic and contains no parts that can be repaired by the end user .
PLEASE DO NOT REMOVE THE CABINET. RISK OF DANGEROUS VOLTAGE. ONLY QUALIFIED AND
AUTHORIZED TECHNICIANS ARE ALLOWED TO REPAIR THE UNIT.
Read the manual upon unpacking the unit
Please read the manual carefully and observe all the instructions given.
Power supply
Only the power supply indicated on the rating plate must be used for this unit.
If you are not sure which power supply you have, please contact the distributor or the local
electricity supplier.
Earthing or polarisation
If the plug cannot be inserted properly into the socket, or if the plug does not fit, the unit must
not be used in your country.
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SAFETY PRECAUTIONS
A triangle with a lightning symbol draws the user’s attention to “dangerous voltage”
without insulation in the cabinet which may be high enough to entail a risk of electric
shock.
A triangle with an exclamation mark draws the user’s
attention to important instructions for use and maintenance in the accompanying manual,
which should be studied.
A symbol for CLASS II (double insulation)
WARNING:
TO MINIMISE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THE UNIT TO RAIN OR
MOISTURE. DO NOT OPEN THE CABINET AS IT CONTAINS DANGEROUS VOLTAGE. ONLY QUALIFIED
TECHNICIANS ARE ALLOWED TO CARRY OUT REPAIR AND SERVICE.
CAUTION:
If the plug of the power cord needs to be replaced, it is important that the replacement is identical to the
plug to be replaced, or that the new plug has been recommended by the manufacturer.
TO AVOID ELECTRICAL SHOCK, IT IS IMPORTANT TO INSERT THE PLUG CORRECTLY INTO THE SOCKET.

Ventilation
The cabinet is provided with slots and openings to ensure ventilation and reliable operation and to
protect the unit against overheating. Do not block or cover these openings. The openings must
never be blocked, for instance by placing the unit on a bed, a sofa, a carpet or similar surface .
Heat
Do not place the unit near sources of heat such as radiators, heat registers, ovens or other units
that produce heat.
Water and moisture
The unit must not be placed close to water, such as bathtub, wash basin, kitchen sink or laundry
tub, in a damp cellar or close to a swimming pools, etc.
Cleaning
Unplug the unit before cleaning. Do not use liquid detergents and aerosol cleaning agents. Please
use only a dry cloth for cleaning the unit.
Power cords
Wiring must be organised to
prevent people from stepping on the cables and to avoid pinching by objects placed on or beside
them. Take special care around sockets and plug boxes and where the power cords leave the unit.
Overloading
Make sure that wall sockets, extension cords and plug boxes are not overloaded as this may lead
to fire or electrical shock.
Lightning
Unplug the unit for additional
protection during thunderstorms or when the unit is not used for prolonged periods. This will
prevent damage to the unit from lightning and power surges.
Penetration of objects and liquid
Never push any foreign objects through the openings into the unit, as they may touch
dangerous
voltage points or short-circuit parts and thus cause fire or electric shock. Do not allow any
liquid to be spilled on or into the unit.
Accessories
Do not place the unit on unstable surfaces such as a trolley, stand, tripod, shelf or table.
The unit may fall and injure children or adults or be seriously damaged. Use only trolley,
stand, tripod, shelf or table that is very stable or provided with the unit. The unit must be
installed in accordance with the manufacturers instructions and by means of installation
equipment recommended by the manufacturer.
If the unit is placed on a trolley, the trolley must be moved very carefully. Sudden stops,
unnecessary force and uneven surfaces may cause the trolley to turn over.
Loads
Do not place heavy loads on the unit and do not step on it. The load may fall and cause
serious injury to persons or damage to the unit.
Damage
Unplug the unit and contact qualified technicians in
the following cases:
A) If the power cord or the plug is damaged.
B) If liquid has been spilled on the unit or objects
have fallen into the unit.
C) If the unit has been exposed to rain or water.
D) If the unit does not work properly after adhering to
the instructions in the operation manual. Only the settings described in the operation manual
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must be made as incorrect setting may result in damage and often will make it difficult for a
qualified technician to make the unit work properly again.
E) If the unit has been dropped or damaged in any other way.
F) When the operation of the unit changes
drastically, the unit requires service.
Service
Do not attempt to carry out any service work yourself. By opening or removing the cabinet,
you will be exposed to dangerous voltage or other hazards. Any service work should be
carried out by qualified technicians.
Spare parts
If spare parts are required, make sure that the service technician uses spare parts specified
by the manufacturer or spare parts with the same
characteristics as the original. Unauthorised spare parts may cause fire, electrical shock, etc.
Safety check
After service or repairs on the unit, ask the service technician to carry out a safety check to
ensure that the unit is ready for use.
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IMPORTANT INFORMATIONS
Handling instructions
The top and back panel of the unit may become warm after prolonged use. This is not
due to a defect.
Turn off the power when the unit is not used.
Protect the power cord
Follow the instructions below to prevent abnormal operation, electrical shock, fire or
personal injury: Hold the plug firmly when inserting it into the socket.
Avoid heat-producing devices.
Do not place objects on the power cord.
Do not carry out service work on or change the power cord.
Positioning
Do not place the unit in any of the following places:
-In sunlight, close to heat-producing devices or in an enclosed rack;
-In places with high temperatures (40C or more) or high relative humidity (90% or
more);
-In dirty or dusty places as some internal parts may be damaged.
Please do not put your fingers or any other objects into the unit
Touching the internal parts is dangerous and may cause injury or damage. Do not open
the cabinet. Do not place any foreign matter in the unit.
Interference
Placing the tuner near a television set, radio or video player may cause poor picture
and sound quality. In that case, move the tuner further away from the television set,
radio or video player.
Condensation
Condensation may occur in the following cases:
When the unit is moved directly from a cold to a warm place.
When the unit is used in a room where the radiator has just been switched on or a place
where the cold air from the air-conditioning system is directed at the unit.
If the unit is used in the summer in a warm and humid room just after it has been moved
from an air-conditioned room.
If there is steam or a high level of humidity in the room.
In case of condensation, the tuner may not work properly. Turn off the unit. Unplug the
unit and leave it for 2-3 hours. The tuner will then have adapted to the environment and
any condensation will have disappeared.
NOTES ON INSTALLATION:
Your System Fidelity ST-370 should be placed on a firm, level surface. Avoid placing it
in direct sunlight or near sources of heat and damp. Always allow adequate ventilation
and don’t place it on a soft surface like a carpet. Don’t place it in an enclosed position
such a bookcase or cabinet that may impede the air-flow through the ventilation
holes. The unit shall not be exposed to dripping or splashing and that no objects filled
with liquids, such as vases, shall be placed on the unit.
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About connection to the mains
Do not turn on the power before all connections have been made correctly.
Check that all connections have been made correctly before turning on the
power.
Check that the mains voltage is 230-240V AC50Hz before turning on the power.
Check that all other connections have been made correctly before inserting the mains
plug into the wall socket.
Then insert the plug into a suitable socket.
If the unit is to be used abroad, you may need an adapter.
REMOTE CONTROL
Installation of
batteries
Remove the cover at the back.
Position two batteries of the type AAA/
R03/UM4 in the battery compartment.
Make sure that the orientation and
polarity of the batteries is correct (see
drawing).
Do not mix new and old batteries and do
not use different types of batteries.
If the remote control is not used for
prolonged periods, remove the batteries
from the remote control to avoid corrosion.
Using the remote control
Direct the remote control at the sensor on the front
panel of the amplifier. When the remote control signal is received,
the unit reacts accordingly. The remote control works within a
range of 6m.
Sometimes the remote control may not work well in direct strong
light. You may have to move the amplifier if it is a problem.
Malfunction may occur if remote controls of some other
equipments are used near the amplifier.
Do not place any objects on the remote control, as the batteries
may become flat if a key is depressed constantly.
Make sure that there are no obstacles between remote control
and amplifier.
Do not position the amplifier behind tinted glass as it may reduce
the maximum range of the remote control.

ST-370 TUNER FUNCTIONS:
(1) Power: Sets the ST-370 in standby
mode.
(4) AM/FM: press to choose between
AM or FM mode
(5) 1-6 : Directly selects the first six
stored stations.
(6) MEMORY: press to store the tuned
station
(7) Autotune: Press for automatic
search in to AM/FM stations. At FM,
the autotune function will search for
a station at a higher frequency.
(9) RDS: Displays RDS and other
information.
(10) ST/MONO: press to choose
between stereo or mono reception (in
case of very weak signal, mono can
offer better sound without noise.
(12-13) Tuning: press + or - for
manual tuning.
(14-15) P (preset): press + or - for
selecting of the stored stations.
CD-370 CD-PLAYER FUNCTIONS:
(1) Power: Sets the CD-370 in standby
mode
(3) Eject: Opens the CD tray
(5) 1-6 : Selects desired track for
playback among first 6 tracks.
(11) PLAY/PAUSE: press once for
playback. If press during play, the disc is
paused. Press one more time for resume
play.
(12-13) SEARCH (tt /uu): Search
backwards or forward.
(14-15) SKIP (Itt /uuI): Selects the
previous or the next track.
(16) Stop: Stops playback
(17) Random: All tracks are played in
random order
(18) Repeat: Repeats a single track or all
tracks on a CD
(19) Program: Allows playback of the
music tracks on a CD in a certain order
SA-370 AMPLIFIER FUNCTIONS:
(1) Power: Sets the SA-370 into standby
mode.
(2) Light: switches on and off the light around
the volume knob
(8) Mute: temporarily switches off the sound.
(20-24) Input buttons: Selects input source
of amplifier.
(24) SPKRS A/B: selects which pair of
speakers are playing.
(26) Volume +/-: Adjusts the master volume.
Note: Some of the amplifier functions can
only be performed by means of the remote
control. Some functions are connected with
the selected signal input source. Some
buttons on the remote control may therefore
not be available if the corresponding signal
input source has not been selected.
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Remote control functions

(1) LED indicator: indicates the stand-by mode
(2) Stand-by power switch: Used to switch the amplifier on and to stand-by.
(3-4) Tuning: 3,5-mm jack that suits most headphones.
(5) VFD Display
(6) Autotune: switches on or off the main speaker pair.
(7) Memory: switches on or off the additional speaker pair.
(8) ST/MONO: by turning the knob sound volume increases of decreases.
(9-10) Preset: Activates the source input.
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REAR PANEL DESCRIPTION
(1) - (5) Line Inputs - RCA cynch inputs for connection of audio source units.
(6) SUB OUT: RCA cynch output for connection of powered (active) subwoofer.
(7) Speakers A: Speaker terminals (left and right speaker) for connection of the main speaker
pair
(8) Speakers B: Speaker terminals (left and right speaker) for connection of the additional
speaker pair
(9) Power cord terminal: for connecting the main lead.
(10) Main power switch: The power on/off switch.
FRONT PANEL DESCRIPTION

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CONNECTIONS
Notes:
When make the connection, please refer to the connection diagram. Make sure that all the
units are switched off during any connection. The RCA sockets on your ST-370 are color coded
for your convenience. Red and white are RIGHT and LEFT audio respectively.
Use high quality RCA-interconnect and antenna cables for optimum performance and reliability.
ABOUT THE ANTENNA
As it applies to all other radios, the sound quality depends on
the signal strength of the antenna inputs.
The position of the radio in relation to the transmitter thus
directly influences the quality of the signal received. For an
optimal result it is therefore very important that you make sure
that the radio receives the best possible antenna signal.
The FM antenna must be adjusted for the best possible result. A
good tip is to let the antenna end point in a vertical direction
and fix it on a wall.
FM ANTENNA AM
For an optimal result it is recommended to install a FM antenna
on the roof or on the loft, or to connect it to a cable system.
FM ANTENNA AM
For receiving AM station an AM loop antenna must be installed.
Adjust the antenna for the best possible reception.
FM ANTENNA AM

On, Off and standby
Turn on the unit by pressing the mains switch on the back panel and unit will turn into
stand-by mode. When in standby mode all functions are reduced to a minimum to make sure
that the unit uses minimal power. In standby mode the unit only reacts to the standby
button of the remote control.
Press the standby (power) button on the remote control or the front panel to switch on.
The red LED indicator will turn off and the display will turn on.
If you wish to turn off the unit to avoid any power consumption, you must press the mains
switch.
Protect the environment and turn off the unit after use.
RDS and FM/AM
1. As this tuner can receive both normal FM radio and AM, it features a function that can switch
between the two reception types. To switch between FM and AM, you must either press the FM/
AM button on the front panel or the FM or AM buttons on the remote control.
2. This tuner features information possibilities on FM called RDS (Radio Data System). RDS is a
method for the transmission of additional information from local Radio Stations. It can only
operated in FM mode. For example, name of the station broadcasting, name of the program or
the type of program will be shown on the multi-function display.
To activate this information, press “RDS” on remote control, there are functions for PS, PTY, WAIT
CT and RT.
PS (Program Service Name)
Press “RDS” on remote control until “PS” appears. The current station name will be shown.
Note: “NO PS” will be shown if the signal from local radio station is not strong enough or no such
service is available at the chosen station.
PTY (Program Type)
Press “RDS” on remote control until “PTY” appears. The current name type of the program will be
shown.
Note: “NO PTY” will be shown if the signal from local radio station is not strong enough or no such
service is available at the chosen station.
CT (Clock - Time)
Press “RDS” on remote control, then “WAITING CT” will appear. The current time from Radio Station
will be shown, e.g. 15:30
Notes: Time will be only transmitted from local radio station once a minute, so you need to wait
for less than 1 minute to show the result. “NO CT” will be shown if the signal from local radio
station is not strong enough or no such service is available at the chosen station.
RT (Radio text)
Quick start
1. Connect the tuner to corresponding RCA terminals of your amplifier and connect
the antenna to the antenna terminal on the back side of the tuner.
2. Plug in the AC power cord.
3. Press the POWER switch on the back panel of the unit to turn the player into
stand-by mode.
4. Press the stand-by button on the front panel or on the remote control and press
required input selector. And enjoy.
OPERATION AND FUNCTIONS
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Press “RDS” on remote control until “RT” appears. Some Text messages will be shown.
Note: “NO RT” will be shown if the signal from local radio station is not strong enough or no such
service is available at the chosen station.
PTY SEARCH (Program Type Search)
1.Press the “PTY SEARCH “ on remote control, “PTY SELECT” will flash on the display.
2.Press TUNING + /- to choose the program type, for example, NEWS, SPORT, …etc.
3.Press “PTY SEARCH” again once you choose the program type.
4.When the type of program tuned in, it will stop searching, otherwise, “NO FOUND” will appear.
Tuning
Automatic tuning
When the unit is turned on for the first time, all settings will be default settings. The settings can be
changed according to your preference. When the unit is turned off the next time, these settings will
naturally be saved as the new default settings. This also applies if you unplug the unit.
When the unit has been turned on, channels must be saved. This is done by means of the
autotune function.
1. To use the autotune function through the front panel controls, press the AUTOTUNE button. All
available channels on the current tuner band will be saved.
2. You can also press the AUTOTUNE button on the remote control.
Note: Weak stations may also be stored in memory, so manual memory presetting may be needed
in order to have better receiving.
Manual tuning
1. If you want to manual tune a channel, you must press the tune + or - button on the remote
control. For every push on the button, the frequency will change 0,05MHz on FM and 9 Khz on AM.
2. To store the manually tuned channel, simply press the Memory button on the front panel or the
Memo button on the remote. The channel will then be stored on the current preset.
Selecting presets
Channels that have been saved can be selected either by means of the preset P + and P -
buttons on the remote control or on the front panel, or by the direct access buttons (1-5 on the
front panel or 1-6 on the remote control).
Stereo and Mono
In some areas not all stations can be recieved noise free, because it is not possible to get a strong
enough antenna signal.
In this case there will be a lot of noise on some radio stations. It is possible to reduce the noise quite
a bit by listening to the radio station in mono instead of in stereo. This can make the radio station
acceptable to listen to. Change to mono by pressing the ST/MO button on the remote or the ST/
MONO button on the front panel. To change back to stereo again, simply press the button once
again.
Reset
This tuner can be reset. This is used to delete channels stored in the unit. Press the RESET button on
the front panel to reset the unit.

TROUBLESHOOTING
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PROBLEM CAUSE/REMEDY
No power when the unit is turned on.
No sound.
The display does not show
RDS information.
- Switch on the electric current at the socket.
- Check that the plug has been correctly
inserted into the socket.
- The internal fuse has blown and must be replaced
by a qualified service technician.
- The power cord has been damaged and must be
replaced.
- The unit has not been turned on.
- Incorrect connection to the amplifier.
- No loudspeakers have been connected to the amplifier.
- The ST-250 has not found any stations.
- The ST-250 has not found any stations.
- The selected station does not broadcast
RDS information.
- The antenna signal is too poor.
See the section on adjusting the antenna.
TECHNICAL DATA
RF section:
Tuner bands FM 87.5-108.0MHz
AM 522-1620KHz
Sensitivity -96dBm type
Presets 40
Audio outputs Stereo, 2.5Vpp
Voltage and power consumption See back panel
Dimensions (WxDxH) 430 x 290 x 75mm
Weight 4.5 kg
We reserve the right to change the technical data and the design of the product
without notice as a result of further development.

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CONSUMER NOTICE:
The System Fidelity product you have purchased is subject to Directive
2002/96/EC of the European Parliament and the Council of the European
Union on waste electrical and electronic equipment (WEEE) and, in
jurisdictions adopting that Directive, is marked as being put on the
market after August 13, 2005, and should not be disposed of as unsorted
municipal waste. Please utilize your local WEEE collection facilities in
the disposition of this product and otherwise observe all applicable
requirements.