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Technics
Gunnrz
Synthesizer FM/AM Stereo Tuner
ST-S4T
OPERATI NG I NSTRUCTI ONS
o
Also available in black
Before operating this unit, please read these instructions completely
9"o* 9at"-, %ot"
We want to thank you for selecting this product and
to welcome you to the growing family of satisfied Technics product owners around the world. We feel certain you will get maximum enjoyment
from this new addition to your home. Please read these operating instructions carefully, and be sure to keep them handy for convenient reference.
oBEFORE USING THIS UNIT. oFOR UNITED KINGDOM oMAINTENANCE OF EXTERNAL SURFACES
.....
oACCESSORIES... oFOR SAFE USE OF THIS UNIT o BATTERIES (option): THEIR USE AND
o
2 2 2 2 3 4 4 5 6 6
(-) screwdriver to set the voltage selector (on the bottom panel) to the voltage setting for the area in which the unit will be used. Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries; the correct voltage is already set.)
Use a minus
INSERTION/REMOVAL lF THE BATTERIES BECOME WEAK o STEREO SYSTEM COMPONENTS AND THEIR CONNECTIONS .... e FM ANTENNA . . .
oAM ANTENNA....
o
Warning
THIS APPARATUS MUST BE EARTHED.
FRONT PANEL CONTROLS AND THEIR FUNCTIONS TSETTING THE DISPLAY TO THE PRESENT TIME. oHOW TO PRESET RADIO BROADCAST
lmportant
10
11
FREQUENCIES...
THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE. GREEN AND YELLOW: EARTH NEUTRAL BLUE: As the colours of the wires in the mains lead of this apparatus
oOPERAT|ON.... oTo listen to radio broadcasts oTo listen to phono discs oTo listen to tape oSteps required lor all operations
o
12
BROWN:
LIVE
may not correspond with the coloured markings identifying
the terminals in your plug, proceed as follows. The wire which is coloured GREEN-and-YELLOW must be connected to the terminal in the plug which is marked with the letter E or by the salety earth symbol * or coloured GREEN or GREENand-YELLOW. The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
Note
14
r HOW TO PROGRAM THE TIMER.
oTimer programming procedures oActual example ol timer programming rTypes ol timer oPeration o Conlirmation ol timer programming o Cancellation ol timer programming o How to change iimer programming
o o
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.
TROUBLESHOOTING GUIDE TECHNICAL SPECIFICATIONS
19 22
To clean, use a soft drY cloth. lf the surfaces are extremely dirty, use a soft cloth, dipped into a soap and water solution or a weak detergent solution. Wring the cloth well before wiping the unit. Wipe once again with a soft dry cloth. Never use alcohol, paint thinner, or benzine, nor a chemically treated cloth to clean this unit. Such chemicals may damage the finish of your unit.
r FM indoor antenna (teeder
.
Stereo pin-type cord . .
antenna)
1
1
*2-
f
For lamilies with children
Never permit children to put anything, especially metal, inside this unit. A serious electric shock or malfunction could occur if articles such as coins, needles, screwdrivers, etc. are inserted through the ventilation holes, etc. of 'this unit.
I
1.
Use an ordinary household AC power source
Use trom an AC power source ol high voltage, such as lor air conditioners, is very dangerous. Be extremely careful not to make a connection to the electrical outlet lor a large air conditioner or central-heating unit which uses high voltage, because there is the possibility of fire. power source cannot be used. Be sure to check the power source carefully, especially on a ship or other place where DC is used.
x
I
lf water is spilled on the unit
Be extremely careful if water is spilled on the unit, because a Jire or serious electric shock might occur. lmmediately disconnect the power cord plug, and consult with your dealer.
2. A DC
I
T Connection and disconnection cord plug
1.
ol the
power
Place the unit where it will be well ventilated, and away lrom direct sunlight
Wet hands are dangerous. A dangerous electric shock may result if the plug is touched by wet hands. 2. Don't pull the power cord. Always grasp the plug; never pull the cord itself.
Place this unit at least l0 cm (4") away from wall surfaces, etc., and away f rom direct sunlight.
I
Keep the unit away trom stoves, etc.
Heat can damage the external surfaces as wellas internal circuits and components.
I
1.
AC outlet on rear panel
Any equipment connected here should have specilied power
x
I
Avoid spray-type insecticides
lnsecticides might cause cracks or "cloudiness" in the cabinet and plastic parts o{ this unit. The gas used in such sprays might, moreover, be ignited suddenly.
consumplion or less. This outlet is exclusively for the connection of other audio equipment, such as a tape deck. Be sure the power consumption does not exceed the wattage specified near the
2.
AC outlet. Never connecl other electrical appliances, such as an iron or toaster.
lf
appliances with
i
a large power consumption are con-
nected, an unexpected accident might occur as a result of
ove rh eat
n
g.
x
I
Never use alcohol or paint thinner
These and similar chemicals should never be used, because they may damage the finish.
x',,,
I
Never attempt to repair or reconstrucl this unit
A serious electric shock might occur if this unit is repaired,
disassembled or reconstructed by unauthorized persons, or if the internal parts are accidently touched.
x
x'-3-
I
lf ,
lf lrouble occurs
during operation, the sound is interrupted or lamps no longer illuminate, or if abnormal odor or smoke is detected, immediately disconnect the power cord plug, and contact your dealer or an Authorized Service Center.
a
Before using this unit, be sure to insert the batteries Isize AA (UM-3) 1.5V I as described below. The batteries serve as an auxiliary power source (for the preset
tuning* r, the "most-recent" memory*2, and the timer settings*s; in the event of an interruption of the ordinary (AC) power source. When the AC power cord is connected to an electrical outlet, these batteries are not being used, because they are not needed; they are used only if the power cord is disconnected or the power is interrupted for any other reason (such as a power failure).
3.
Fit the left and right pro.iections.ol the battery compartment cover into their original positions, and close the cover.
tl.Preset tuning
The proset tuning is a system by which any desired broadcast station which has been preset by using one of the preset tuning buttons @ can be tuned by simply touching one button.
*2.
I
Removal ol batteries
Push the battery at the left in the direction of the arrow to.remove it.
Most-recent memory
The most-recent memory is a system by which the unit "remembers" the FM or AM broadcast station last heard when any of the functions (except the clock/timer) of this
unit are turned off, and automatically tunes to that station the next time the power is turned on.
*3.
Timer settings
The timer settings are the times to which the timer has been set to turn on (or olf) the radio broadcasts.
I
Battery life
The batteries will last for about
operating conditions.
2 years under normal
I I
Type of batteries
They will last about 2 months if the power cord is disconnected f rom the electrical outlet.
Use three AA-size (UM-3: 1.5V) batteries {or this unit.
I
lnsertion of batteries
Move the battery compartment cover in the direction of the arrow, and lift it upward to remove it.
Notes concerning the batteries 1. Do not mix used and unused batteries, nor batteries
of
1.
2.
different types, because to do so may result in rupture or leakage of the batteries. lf the unit is not to be used for a long time, the batteries should be removed.
2.
lnsert the batteries into the battery compartment
lf there is an interruption o{ the power (such as a power failure) when the batteries are very weak or worn out: o The letter "E" will appear in the display. r The clock will not show the correcl time. Because all programmed f unctions in the memory will also be erased, f irst replace all of the batteries with new ones, and then program all functions once again.
d
FM ouldoor anlenna (option)
(Necessary in mountainous region.
inside reinforced-concrete building,
etc.)
C
FM indoor anlenna (included) r Unfold to T-shape, and attach to a wall (using tacks or tape) facing in direction of best reception. r Tacks should not contact internal antenna wire. r For best reception sound quality, an FM outdoor antenna is recommended. . Disconnect this antenna if an FM outdoor antenna is installed.
AM outdoor antenna (option)
(Necessary in mountainous regions,
i nside rei nforced-concrete buildings, etc.) Use 5 - 12 m (16 - 40 ft.) of vinyl- covered wire horizontally at the window.
Tacks or tape 75-ohm coaxial cable (option)
Vinyl-covered wire (option)
AC oullet (SWITCHED): By making a connection to this AC outlet and setting the power switch of the prelmain amplifier to the "ON" position, the power of the prelmain amplifier can be turned on and off by using the power switch of this unit. The configuration of the AC outlet differs according to area.
Be sure the shield braid contacts the clamp.
This unit
Shield
aid
Clamp
cond uctor
Center
Output
terminals
("ouTPUT") Voltage selector (on the bottom panel): Before using this unit, be sure to set to
voltage.
FM/AM allocation selector (ALLOCATTON):
The steps between broadcasting stations may differ in different localities. This selector can be used to select either FM 0.2 MHz/AM 10kHz steps, or FM 0.05 MHzlAM 9kHz steps. Set to the appropriate position for your locality. Note: The power of this unit must be turned off before this selector is set.
Stereo pin-type cord
Because this unit includes a timer, be sure to connect the power cord to a household AC outlet. Disconnect the power cord plug from the supply socket when not in use. Amplifier (option)
-5-
Note:
the reception of two types of signals: those reflected from nearby buildings, mountains, etc., and those reFor best reception of FM broadcasts,select an FM antennawith
Multi-path distortion is the distortion which results from
ceived directly from the broadcasting station. 2) Away from busy roads, and away from neon.signs. Away from noise sourcesl
the best characteristics for the area in which the unit is to be
used.
I
1.
Antenna exclusively for FM reception
Selection
1
\\
3)
) I n areas where very strong broadcast signals are received
(where the transmitting antenna can be seen), use an outside antenna with 3 - 5 elements.
2)
At least 4 meters (12 feet) above the ground (except in
mountainous regions, etc.).
ln areas where weak broadcast signals are received (in
mountainous regions or between tall buildings), use an outside antenna with 5 elements or more.
r--l
Signals not received if too low
Note: Consult with your dealer for detailed advice concerning the number of elements the antenna should have.
2.
)
As hrgh as possrbte
Connection wire lrom lhe
antenna
To obtain the best performance of which this unit is capable, the cable used to connect this unit with the FM outdoor antenna should be 75-ohm coaxial cable which resists the effects of external noise.
3.
4l At least 3 meters (10 feet) away f rom a metal roof or other
anten nas.
Other antennas
Metal
roof I
'
lmpedance matching lf it is impossible to make a direct connection with 75-ohm coaxial cable from the antenna, a matching transformer should be installed, as close to the antenna itself as possible. FM outdoor antenna 300-ohm parallelleeder wire Matching transformer (300-ohm - 75-ohm) 75-ohm coaxial cable
Atleast3maway
5) To avoid danger, away
from electric power lines,
This unit
Note:
4.
Connection
An outdoor antenna should be installed by a competenl
technician only.
lf 300-ohm parallel feeder wire is used:
This unit includes a highly sensitive built-in ferrite-bar antenna for AM broadcast reception. No outdoor antenna is necessary unless this unit is used in an area where signals are especially
I
5.
weak.
How lo use the AM ferrite-bar antenna
To prevent noise: Do not bring speaker connection wires or the power cord near
thrs
Location of antenna lnstall the antenna: 1)Where it will receive FM broadcast signals directly; not in the "shadow" of a building. Correct location avoids multi-path reception
FM anten na
Pull the AM ferrite-bar antenna outward.
anlenna.
Ll:::t...:.t':.-,,i.:.:;:.,1;i:
F-
.
I
Connection ol an outdoor antenna
lf an outside AM antenna is installed (in mountainous regions or between reinforced-concrete buildings), install it in a location away from utility poles, high-voltage power lines, high
buildings and busY roads.
Note:
An outdoor antenna should be installed by a competent
technician only.
-6-
Tuner-oll switch
lnput selectors/tuner-on switches
Time-set buttons (1 Tuning bultons Quartz-lock indicator Memory button Memory indicator
-
0)
FM stereo indicator
Automatic-scan/FM mode selector
FM lF-band swilch Program-mode selector
)A
O Tuner-off switch (olf)
This is the switch used to turn off the functions (except the clock/timer) of this unit. Press it to turn off the functions (except the clock/timer). Note that the functions of this unit are not turned ott by pressing this switch while the timer is operating. To lurn the f unctions off , f irst set the program-mode selector @ to the "manual" position, and then press this switch.
Note: To turn on the f unctions (except the clock/tirner) of this unit, set the program-mode selector @ to the "manual" position or the "auto" position, and then press one of the input selectors/tuner-on switches @ ("FM" or "AM"). ln addition, the functions (except the clock/timer) can also be turned on, in order to receive an FM or AM broadcast, by simply pressing one of the preset-tuning buttons @
.
@ Presel-luning buttons (1 (FM/AM preset tuning)
-
8)
These buttons (l - 8) are used to preset FM and AM broadcast frequencies into the memory of this unit, and are also pressed to select the desired preset frequencies. A total of 16 f requencies (8 FM and 8 AM) can be preset into the memory of this unit. After a f requency has been correctly
preset, it is only necessary to press the corresponding button to tune to that frequency.
Noie:
Refer to page 11for detailed information concerning the method of presetting the memory of this unit.
O
Time-set bultons (1
-
0) (time)
@ lnput selectors/tuner-on switches (FM/AM)
FM: Press this button
to listen to an FM radio broadcast. to listen to an AM radio broadcast.
These buttons (1 - 0) are used to set the display to the correct present time, and are used to set the program timer to the time the unit is to be turned on and the time it is to be turned off. Note that the display time is indicated from 0:00 to 23:59, and therefore four digits must be used to make the setting.
lf you want to make a setting for 7:45 A.M., therefore, the "0" button, the "7" button, the "4" button and the "5" button must be pressed in that order.
AM:
Press this button
O Timer-memory bultons (1 -
6)
ln the same way: For'12:00 (midnight): 0 - 0 - 0 - 0
(everyday 1, everyday 2, once)
These buttons are used to program the timer to turn the power to the unit on (or off) every day at the same time ,
once only. everyday 1, everyday 2: Use one (or both) pair(s) of these buttons in order to pro-
For'l:30A.M.: Forl:05P.M.:
0-1-3-0 1-3-0-5
or
@ Tuning buttons (tuning)
These buttons are used for tuning to the desired broadcast station. The frequency range of this unit is f rom 87.5 to 108 MHz (FM), and f rom 522 lo 1611 kHz (AM). When either of these buttons is pressed once, the frequency is changed by 0.05 MHz (50 kHz) (FM )and 9 kHz (AM). lf the button is pressed continuously, the frequency will continue to change. down: When this button is pressed, the frequency will change to a lower f requency. When the displayed f requency is the same as the transmission frequency of the broadcast station you want to hear, the quartz-lock indicator @ will illuminate.
gram the timer to turn the power on (or off) at the same time(s) every day.
Because there are 2 pairs of these buttons, one pair can be used, for example, to turn on or off the "everyday 1" f unction so that it can be used as a morning alarm, and the other pair to turn on or olf the "everyday 2" f unction for radio listening before going to bed at night. once: These two buttons can be used to program the timer to turn the unit on and off at a certain time once only, after which that time setting is cancelled from the unit's memory. This function can be conveniently used, for example, to turn the power on and off for an unattended tape recording ol a radio broadcast. Note:
Use this illumination, then, as an indication of correct
tu ni ng.
up:
The order of operation priority of these buttons is: (1) "once," (2) "everyday 2" and (3) "everyday 1". For more detailed information, refer to the section "Types of timer
operation" on page
17.
When this button is pressed, the f requency will change to a higher f requency. lt can be used in the same manneras the button marked "down"
O
Unattended recordings cannot be made with some types of tape decks. For more information concerning this point, read the operation instructions for the tape deck.
Quartz-lock indicator (quartz lock) This indicator illuminates when a broadcast is received.
It will not illuminate if the signal from the broadcast station is weak.
-8-
o
Memory bulton (memorY)
This button is used when one of the preset-tuning buttons @ is used to program an FM or AM broadcast frequency into the memory of this unit. When this button is pressed, the memory indicator @ will illuminate, and the broadcast frequency should be programmed into the memory during the time that it is illuminated.
Nole:
@
rU lf-Uand switch
(FM lF band)
This switch can be used to prevent interference trom nearby broadcast stations. normal ( r-l ): The unit should under normal circumstances be used with the button in this position (released outward).
super narrow ( .l.
1.
For detailed information concerning programming of
the memory, refer to page 11. 2- lf this buttbn is pressed during program selection with the auto scan/FM mode selector set to the "onlauto" position, sound will cease to be produced.
Broadcasts might be affected by interference if there are many broadcast stations or if there is a station nearby the station being received. lf so, press this switch in. At this position, distortion may increase slightly, but interference from nearby stations can be prevented.
-r
):
0
Memory indicator (memory) This indicator illuminates when the memory button
@ Program-mode selector (program mode)
@
is pressed. When presetting the frequency of an FM or AM broadcast station, press one of the preset-tuning buttons @ during the time (about 5 seconds) that this indicator is illuminated.
The program-mode selector is used when setting the display to the correct time, when programming the timer memory, and when activating the unit to perform the operations (power on and power off) programmed into the timer.
time set: Set to this position in order to set the display to the correct
time. manual: Set to this position for ordinary reception of radio broadcasts, disc playing, etc. which have no relation to the programming of the timer for automatic onloff operation.
@ Display This display indicates the radio reception f requency and
the time (although not both at the same time). Watch this display when tuning to a radio broadcast, when setting the clock to the correct time, etc.
aulo:
Set to th is position for the automatic on/off operations which
@ FM stereo indicator (stereo)
This lndicator automatically illuminates when an FM stereo broadcast is being received. Note:
have been programmed into the timer. Note that operation is the same at either the "auto" position or the "manual" position during times which are not within the times programmed into the timer memory. read:
It will, however, not illuminate if the automatic-scan/FM mode selector @ is set to the "offlmono" position.
Set to this position for verification of the settlngs programmed into the timer memory.
wrile:
Set to this position before programming inf ormation into the timer memory.
@ Automatic-scan/FM mode selector
(auto scan/FM mode)
This selector can be used to select eitherautomatic tuning or manual tuning when used in conjunction with the manual tuning buttons @, and to select either stereo or monaural reception of FM broadcasts. (The FM mode selector does not operate for AM broadcasts.)
cancel: Set to this position to cancel the information programmed into the timer memory.
Caulions to be taken during automatic timer
operalion:
on/auto ( r-_-l ):
Set to this position for ordinary use. FM stereo and monaural broadcasts can be received.
1. During automatic operation, all functions
When one of the tuning buttons is pushed once, the next strong station will automatically be tuned in.
oll (manual)/mono (
1^1
):
All broadcasts, stereo and monaural, will always be received monaurally. The frequency will change by one "step" when one of the tuning buttons is pressed once, or will change continuously while a tuning button is pressed continuously.
2.
exept those of operating buttons @, @, anO @ will in inoperable. However, if the program-mode selector @ is set to the "manual" position, or if the auto scan/FM mode selector @ is changed, the unit will return to manual operation. lf the program-mode selector @ is set to ihe "read" position during automatic operation, power will cease to be supplied to the unit. Special care must be taken to avoid this while recording, etc.
(Be sure to lollow these steps in the numbered order.)
Elor uginEr,thJs unit be $r]pJo galrhe dilphy,iojhacorrcl , :. , Br9sent timei U mugl'be sel toilhe Conocl Dre$nttim-e. lrot,only so thal lhe conect-prseRt tirnerr'can'bB'disphyed,,bot als'o beeausE he
,
col,fest,,time ritAacesgary,:in'otdt tq the'instiuelions given,in lhe 'seclion :'HOW.T-o:,PROGnAIi| THETl,MERa on page 14.
The clock used in this unit displays the time by using the 24hour system (from 0:00 to 23:59). Follow the instructions explained below in order to prepare the clock for operation.
Note that these operations can be performed in the same way even during reception of a radio broadcast or during a disc
perf ormance.
Connect the power cord plug ol this unil to an ordinary household AC outlet.
Sel the program-mode seleclor to the "time set" position.
l::ill'll:l:1
Using the time-set buttons
(1 -0), press the lour buttons (in order) corresponding to the correct present lime.
Set the program-mode selector to the "manual" position when a time signal (from radio or telephone) is heard. (The correct time will appear on ITET-0-]
the display.) The clock will begin operation instantly when the program-mode selector is set to the "manual" position. Note:
-
-
Examples: Press 0 - 8 - 0 - 0 to set the clock to 8.00 A.M. Press 1 - I - 0 - 5 to set the clock to 7:05 P.M. To set the clock to 8'00 A.M., press the buttons in the order illustrated below.
''0' "8' "0
'0
to
,-l
l-rEr__l
l-rET--l
When the program-mode selector is set to the "manual" position when setting the time while lrstening lo a radio broadcast, the f requency of the radio broadcast will appear on the display.
l-oB{ol
Note:
lf any button is pressed in error, first complete a setting of four digits, and then make the correct setting of four digits once again f rom the beginning
- 10-
(Be sure to follow these steps in the numbered order.)
f
This unit can be used to preset as many as 1 6 radio broadcast requencies: 8 FM and 8 AM. After broadcast frequencies have been preset as described below, any desired station can be nrrickly and easily selected by simply touching one button.
"manual" ( ^=r ) "on/FM auto Set to "offlFM mono" position if noise is excessive (Broadcast will be heard monaurally.)
To preset an FM station: press the "FM" button. To preset an AM station: press the "AM" button.
Press the appropriate tuning button lo tune to lhe desired broadcasl. Press the memory button.
(The memory indicator will illuminate for about 5 seconds.) ("up" for a higher frequency or "down" for a lower frequency)
@
lhat you make a record, such as illustrated "uggested below, in order to keep a record ol which station was
tt i.
While the memory indicator is illuminated, press the preset-tuning button (1-8) which you want to use lor that station.
When the button is pressed, the memory indicator illumination will stop, and the presetting is complete. Nole: lf the memory indication illumination stops before you press the button, once again repeat step @ and then step @.
preset for each button.
This completes the procedures for presetting radio broadcast
frequencies.
The other preset-tuning buttons can be preset in the same way by following steps @ through @
.
Note:
lf a new {requency is preset for a button which had already been preset, the previous setting will be cancelled.
c4/ 7 5'y4
,/
ffi'r7lJ 5
8q..15
q./.95
.'<4. 4
e
i.,s<
lonoo4
qu.qg
L8e
77.ts
I
Convenient teatures
The station heard belore the function was turned'ofl will be heard again when the function is once again turned on. When the input selector/tuner -on switch marked "FM" or "AM" is pressed. you can hear the same FM station or AM station that was being heard before the function was turned off.
FM and AM broadcasts can be quickly and easily tuned by "one-louch" operation. With this unit. you can easily tune to any desired preset FM or AM broadcast station by simply pressrng one of the presettunipg buttons (numbered 1 - 8). \iithout the necessity of selecting FM or AM each time you change stations. It is only necessary to make a selection of FM or AM when
you change f rom an AM station to an FM station (or vice-versa),
but not when changing from an FM station to another FM station (or AM to AM)
-11-
(Follow all steps in the numbered order.)
Note:
The amplifier shown here is the Technics model
'.l::l:l:ll:..:$lffien]6lia,bl.bi@eis*]:]:1:ll''l'].i.:]
Station selection:
.
lf the station has not been preset. Tune to the deslred station by pressing one ol the tuning buttons.
"FM": lor FM broadcasts "AM": for AM broadcasls
"auto" or "manual"
Station selection:
. lf the station
"on/auto" (
Set to
has been preset: Tune to the deslred statl by pressing thecorresponding preset-tuning button
^=-f "offlmono'( I'^r ) posrtion if norse is excessive
)
(a) ("0-1")
Set volume conlrol to low position lor easier tuning
(Broadcast will be heard monaurally.)
VI
"tuner" "main", "remote" or "main and remote"
(Refer to note.)
Adjust volume level
(Steps @ @ may differ depending upon the equipment being used with this unit.) Note: Set to the "main'positron to use the speaker systems connected to the l\,4AlN terminals
To,,listen
(Refer to note L)
.to
ono
I
d'
gs'
"main", "remote" or "main and remole" "FM" or "AM" "phono"
for moving-magnet cartridge for moving-coil cartridge
"auto" or "manual"
(r)
!!-ii---+
"0"
"on"
(Record player)
(/-)
AdJUSt volume level
"stereo
Start/slop button: Phono disc:
Place disc on Press to begin disc play
turntable
Speed selector: Power switch: "on"
Select speed
(Steps @ - @ may differ depending upon lhe equipment Lrsed wrlh thrs Lrnrt ) Nole: 'MAlN" termrnals Set to the "main" position to use the speaker systems connected to the
i
-12-
To liolen.to tape
or "main and remote" "FM" or "AM"
"tape1"or"lape2"
(Refer to note 2.)
"auto" or "manual"
(/-)
"0"
(Tape deck)
(a)
Adjust volume level
"stereo"
Playback bulton: Press to begin tape playback Eject button:
lnsert the cassette
Power switch: "on"
Tape selector Set to position corresponding to type of tape to be used.
(steps @ - (D may differ depending upon the equipment being used with this unit.) Notes:
2. set to the "tape
,:',,
1. Settothe"main'positiontousethespeakersystemsconnectedtothe"MAlN"terminals. l" position to use the tape deck connected to the "TAPE l" terminals
'$tF5',ieEdit6dltil0i,,agl:,.qptratioh5
"normal" (
position.
lf interference from other stations prevents reception of the desired broadcasting station, set to the "super narrow"
^ -r
)
Press this butlon when using the preset-tuning bultons lo preset radio broadcasl stalions.
Press lhis bulton to turn oll the
power (excepl lhe clock/timer).
'-.(The
power to other equipment
lwill be turned off.)
NOIE ll the program-mode selector is sel to the "read" position during a radio broadcasl or disc perlormance. the power io all connecled equipmenl will be inlerrupted, and no sounds will be heard lrom lhe speaker syslems.
- tJ-
I
(Follow all sleps in the numbered order.) To "proqram the timer" means to prepare the timer so that
it will tu rn the power on and olf at the desired times for a desired
@
radio broadcast. By following the steps (shown at the right) in the numbered order, therelore, it is possible to prepare the timer so that it will tu'rn on the power of the program source at the desired time, and then to turn off its power at the desired time.
Select lhe desired type of timer operation. Select either "everyday 1", "everyday 2" or "once", and press the corresponding "on" button. lf , for example, "once" is selected, press the "on" button
lor "once" oPeration.
.To
turn the power on (and off) at the same time every day, press the "on" (and "otf") buttons for "everyday 1" and/or lor "everyday 2" operation. o To turn the power on (and off) for one time only, press the "on" (and "off") buttons for "once" operation. For more detailed information, refer to the section "Types of timer operation" on page 17. (The [---l-l indicatron will appear on the display.)
d
O t", to the "write" position. I
(The timer will show the present time.)
Unattended recordings
Follow steps l$ through @ of the programming procedure shown at the right. Then set the timer stand-by pushbutton of the tape recorder to the "on" position so that the tape recorder is prepared tor recording. At the programmed time, the recording will begin, and the power will then be turned off at the time to which the timer has been programmed for power turn-off. Be sure that the power cord plug of the tape recorder is connected to one of the AC outlets of this unit.
W
6 Pr"..
the preset-luning button which corresponds to the FM or AM broadcast stalion that you want to hear.
When the button is Pressed: The indicator above that button will illumrnate for a moment. and the present time will be shown on the display.
O
Set to the "auto" position. The power of the desired sound source will
then be turned on and ofl at the programmed times (The correct present time will be shown on the display )
t,
ll
I
Nole:
lf . while the timer is being programmed. the wrong brrlton rs pressed rn enor cancel the steps made (rnlil that pornt arrd begrn agarn trom the beginrting To make a cancellation refer to the sectlon Cancellation ol
timer programming on Page 18
-14
,,*o*lqdlf
l*
@
oExamples: 12:05A.M.
erogr"rn the powerturn-on time by using lourctigits.
7.45AM 7:05P.M
.0-0-0-5 .0-7 -4-5 ..1-9-0-5
(Press each button in the order shown above.)
o
E
@
Setect the desired program source. . FM broadcast.. .. . Press the "FM" button.
o
When 7:45 A.M. is set, the display indications will be
as follows.
AM broadcast
....
Press the "AM" button.
lf the "FM" button or the "AM" button is pressed: The indicator above that button will illuminate, and the time that the power will be turned on will be shown on
the display.
@ er""" the "oll" button corresponding
to the
type ol timer operation selected in step @.
@ erogr"r
o
the power turn-olf time.
.
lf , f or example, the "on" button for "once" operation was pressed in step @, now press the "off" button for "once" operation. (The [--l--l indication will appear on the display.)
The method of programming is the same as described in step @ r For power turn-off at 11:45 P.M., the procedure is
as follows:
After these numbers are displayed, the display will then immediately show the correct present time.
lf a wrong button is pressed accidentally, finish pressing the four numbers, repeat step O, and then press the four correct numbers.
L
-
15-
Ac'tual ibtCmpte,:
61:
timer: plogramm ing
:
Example: To be awakened every morning al 7.45 lo an FM broadcast
from the station preset by preset-tuning button #3, and to turn otJ the power at 8:30 A.M., follow the steps described
below.
Set to the "wrile" Posilion. (The present time will be shown on
the display.)
Press the "on" button lor "everyday 1" oPeration. on the display.) Press the 0 - 7 - 4 - 5 limer-set
lfnef:
--llndication will
be shown
buttons (in that order) in order to turn on the Power al 7:45 A.M.
o;
"7"
''
llt : foT,-_l
r
Press the "FM" button.
4'
InT'r-l
foiIEl
The indicator above the "FM" button will illuminate, and the power-on time will be displayed
Press the #3 button.
The #3 indicator will then illuminate for a moment, and the Present time will be shown on the disPlaY.
Press the "oll" button lor "everyday 1" oPeralion.
(The f .-__l indication wrll be shown on the display )
I - 3 - 0 timer-set buttons (in that order) in order lo turn oll lhe Power at 8:30
Press lhe 0 A.M.
Set to the "auto" Position.
(The correct presenl time will be shown
''0' frr---'----l lul
''8"
on the display ) This completes the steps necessary to turn on and oft the Power to hear a desired radio broadcast at the same
trme each day.
rnE'
'3'
'0'
fpgil
-l
l-lElTrl
Alter these numbers are disPlaYed the display will then immediatelY show the correct Present lime.
- 16.,..-:*efl
!
There are 2 types of timer operation, once only ("once") and every day, and two operations can be programmed for every day ("everyday l" and "everyday 2"), thus giving a total of 3 ti mer programming possibilities. o The "everyday 1 " and "everyday 2" buttons (2 "on" buttons and 2 "oll" buttons) can be used to turn the power on and off every day at the same time for two sound sources. r The "once" buttons (1 "on" button and 1 "off" button) can be used to turn the power on and ofl one time for one sound
sou rce.
It is recommended that the following examples be studied carefully in order to fully understand the priority of operation.
l)
The order ol priority lor limer operalions is: ',once", "everyday 2" and "everyday 1". (A)lf the timer is programmed as shown in the following example, the "once" operation will have priority, so that the "everyday 2" operation will change to the
"once" operation at 20:00.
Power-on time once everyday 2
20:00
19:00
Power-off time
23:OO
I
Most effective use
21:00 7:30
power
r The "everyday" buttons can be used, for example, to automatically turn the radio on to a desired broadcast every
morning at the same time (as a wake-up alarm), and to automatically turn the radio off every day al the same time, after going to bed for example. o The "once" buttons can be used, f or example, to turn the radio on and off at the desired times for a certain program in the same afternoon, or to make an unattended recording of a
everyday
I
6:00 on
power otl
I
evetyday
2
+
Power
m rr' r i
Power otf
everydayl
r
r
5678918192021222324
(B)lf the timer is programmed as shown in the following example, the "everyday 2" operation will have priority, so that the "everyday 1" operation will change to the "everyday 2" operation at 1 1:00.
Note:
The line indicates the time frame in which the limer has turned the power on.
Power-on time everyday 2 everyday 1
eve(yday
Power-off time
14:00
'12:00
-
11:00 10:00
power rl
1. Programming
nighttime power-on and power-off:
the timer for morning and/or
When the timer is programmed as shown below, the power will be turned on and off every day at the same time. Power-on time evervdav
1
2 + I +
on
power off
-# everyday
Time
Power ofl time
7:30 23:30
9 10 1r 12 13 14 15 16 17 18 r9
20
6:00 21:00
Power
everyday 2
evervdav
I
+
on
ll
Power oft
2) Even lhough the timer can be programmed to turn lhe Poweron Powerolt
evervdav2 +
I
I
56789102021222324
2.
,.-i-i), one-time-only
with a higher operational priority is in progress, lhe
power will nol actually be turned on. (A)lf the timer is programmed as shown in the following example, the power will not be turned on for the "everyday 2" operation. Power-on time once everyday 2
power
once
power on during the time lrame that a limer operation
Programming the timer power-on and power-ofl:
lor a
The "once" function of the timer is used in lhis instance. The programmed settings of the timer are cancelled after one operation when the "once" function is selected. The programmed settings are repeated day after day when the "everyday 1" or "everyday 2" function is selected. Power-on time once evervdav 1 everyday 2
once everyday everyday
Power-off time
14:00 17:00
10:00 12:00
on
power olt
Power-off time
11:00 7:30 23:30
9:00 6:00
21 :00 power
evetyday
Tr
2
+ 9 10 11 1213 t4 15 16 17
18
m
on
power ott
1
+
power
on i-,
6
power ott power
2 +
5 7 I 9
10
on
power oll
(B)lf the timer is programmed as shown in the lollowing example, the "everyday 1" opAration will change to the "once" operation at 12:00, and the power will not be turned on forthe "everyday 2" operation.
Power-on time
Trme
\1 12 21 22 ?3
f-
24
Power-off time
17:00
19:00 13:00
power olf Power won t be turned on.
3.
Priority ol timer operation:
-
ll 2 (or all 3) of the timer operations are used, and if any of
these programmed times overlap each other, this unit is designed so that there is an automatic priority of operation, inasmuch as only one programmed operation can occur at a time. Be sure, therefore, that time settings are made correctly, and with the above facts in mind, because incorrect and/or overlapping settings might result in the power not being turned on at the desired time.
once everyday 2 everyclay 1
12:00 16:00 10:00
oower on
evetyday everyday
T
2
+
power
1 +
on
,,lpowet oll
20
rme
9 10 11 12 13 14 15 16 t7 l8 19
l-
-17
-
gonlitfi eii0n6t:timeiptlgtem:mind,::r,,,,,,,,,,
(Be sure to lollow all steps in the numbered order.)
The timer can be checked (to determine what has been programmed) in the following manner.
Example: an FM broadcast every morning a17'.45 t(om the station corresponding to preset-tuning button #3, and, further, that the timer has been programmed to turn that power off at 8:30 A.M., proceed as follows, in the numbered order.
To conlirm that the timer has been programmed lor "everyday 1" operation to turn on the power in order to receive
Sel to the "read" position.
Press the "on" button
lor "everyday l"
operation.
Program source indicator (FM) illuminates. Preset-tuning button indicator #3 illuminates Power-on time (07:45) is indicated
Press the
(
"oll" button lor "everyday 1" operation.
Press the "off" button for the same operation as pressed in step
)
)
Cancellation o{ timei programminE
Set the program-mode selector @ to the "cancel" position, and then press the "on" and "off" buttons for the operation to be cancelled ("once", "everyday 1" or "everyday 2").
o
How to change timer programming
A part of the timor programming can be changed by following the procedure described below.
1.
To cancel the programming lor "everyday 2",lor example; 1. Set the program-mode selector @ to tne "cancel" position. 2. Pressthe "on"and "off" buttonslor"everyday2"operation. By lollowing these steps, then, all programmed operations for "everyday 2" have been cancelled.
2" 3. 4.
o
Other operations can be cancelled by following lhe same
procedure.
To change lhe power-on time. . Change steps @ through ! on pages 14 and 15. To change the power-oll lime... Change steps G) and O on pages 14 and 15. To change the sound source. . Change steps O through @ on pages 14 and 15. To change the limer operation. . Change steps O through O on pages 14 and 15.
. . .
-18-
I
mine if the problem can be solved as described below. lf
the
oryourlocal ServiceCenter(seelistincluded) forfurtherinfor-
'"'"" ""' I u;Tifr:'ll t"#i'i:,?:';llTi::,1iff:""ff:i:;iJ:lll:i:#:
"*'"""*
I
F
fl
-
An unusual hissing
noise is heard when listening to the broadcast in stereo, but nol heard when listening monaurallv. Noise is excessive in both stereo and
A slight noise may be heard because the method used for modulation of FM stereo broadcasts is different than that used for monaural broadcasts.
Poor location and/or direction of the antenna Transmitting station is too far away.
oTry reducing the treble sound by using the treble tone control of the amplitier. rSet the automatic-scan/FM mode selector @ to the "offlmono" position. (Note that the broadcast will then be heard as
monaural sound.) oTry changing the location, heightand/or direction of the antenna. .lf an interior antenna is being used, change to an exterior antenna. rTry using an antenna with more elements. oTry changing the location, height and/ordirection of the antenna. .lf an interior antenna is being used, change to an exterior antenna. rTry using an antenna with more elements.
Excessive noise in stereo broadcasts; sometimes no sound is emitted. Excessive distortion in lhe sound ol stereo broadcasts.
Poor location and/or direction of the antenna. Transmitting station is too far away.
Nearby building or mountain. lMulti-path distortion is being caused by the mutual interference of broadcast signals received directly from the transmitting station (direct waves) and signals being reflected f rom nearby buildings or mountains (reflected
waves).1
An unusual "poPPing" noise is heard when
Such noise is called ignition noise, and occurs while the automobile engine is running. Caused by the "discharge phenomenon" and the "oscillation phenomenon" of electric appliances (such as fluorescent lights, TV, small series-type motors, rectification equipment, etc.).
rRelocate the antenna and the connection wires
leading to it to a place farther away f rom where automobiles pass. .Try placing this unit farther away from such equi pment. r lnstall noise-prevention equipment on this unit or on the electric appliance.
aulomobiles Pass. A slrange hissing noise is produced continuously or inlermitlentlY.
Preset-tuning bulton(s) @ doesn't tune to
broadcast station. Preset-tuning button(s) @ tune lo stalion, and lrequency is displayed, but no sound is heard,
Preset-tuning button(s) @ isn't preset to
broadcast station. Broadcast signals are weak; automaticscan/FM mode switch @ is set to the "on/auto" ( r-.I ) Position.
r Preset to tbe desired broadcast station(s). (Refer to page 11 for details.)
rSet the automatic-scan/FM mode switch the "offlmono" ( t=^ ) position.
@
to
- 19--,,/
I I
lilr:i::l: r!!ir::q
iiF ig..l
An unusual "beal" sound is heard. A low-pitched "hum"
sound is heard when the broadcasl is tuned. A strange hissing noise is produced continu-
ously or intermitlenlly.
When listening to stereo
sound, each sound ol lhe various musical
Unit is being used at the same time as the television set. The antenna conneclion wires are too close to the power cord. The power supply trequency from the power cord is modulated and heard f rom the speakers Caused by the "discharge phenomenon" and the "oscillation phenomenon" of electric appliances (such as fluorescent lights, TV, small series-type motors, rectification equipment, etc.). The positive (+) and negative (-) connections of the speaker connection wires are reversed.
oTurn off the televisior set, or use this unit farther awav from it. . Place the antenna connection wires and the power cord farther apart. r Try reversing the connection of the power cord plug. .lnstall a special exterior antenna. rTry placing this unit farther away from such
o
equipment. lnstall noise-prevention equipment on this unit or on the electric appliance.
so that the positive and negative conneclions are correct.
. Reconnect the speaker connection wires
i.it:u:i:tat:.1
:ii:i
:i:3:t:
lrom ils correct posilion. When lislening lo slereo sound, lhe lett and right
sounds are reversed.
ii::lrl::l{ii
:rtiial!:i
.:,llira::ral:ra
The left and right connections of the speaker connection wires are reversed. The left and right connections of the connection wires connected to other equipment are
reve rsed.
oCheck the connections of the speaker connection wires and make them correctlv. rCheck the connections of the connection wires to other equipment and make them correcfly. oTry separating this unit and the electric appliance as far as possible. oReverse the connection of the oower cord oluo_ .Check to be sure that the grounding connection is
correct.
ii.:ai1i:1i
::3i;]t:i;
A low-pitched noise ("hum" or "buzz") is
heard.
The power cord or a fluorescent light, etc., is near the connection wires.
iliiila
l.r:ri:!a]i::
Ine connectron ol lhe ground wire is incorrect
tr:|a::!
or incomplete.
Sound is nol heard lrom the speaker system on one side. The volume level for a radio broadcast is difThe speaker connection wires are disconnected. The balance control of the amplifier rs not set to the center position. The strength of the broadcast signal is not the same as the output from the record player.
Itii:t:
aa,:i :llri:l
']]li;i![. :i!tl!l
:iffii!
r lf the unit is not grounded, try doinq so. rCheck and correct the connections of the speaker connection wires. .Set the mark on the balance control to the center
position.
.Use the volume control of the amplifier to adjust
the volume.
*&i: iiaiaitl
:ias::
:it:iEl:,ii
lerenl lrom that tor disc play.
No sound is heard when one ol the input
The program-mode selector @ is set to the "read", "write" or "cancel" position.
. Set it to the "auto" position or the "manual" position.
l':i!!t:.
ills:.
llrga:
:rir&::
selectors/tuneron switches @ is
pressed. Sound is inlerrupted when the programmode selector 6 is moved lo the "lime sel" The program-mode selector
'tt:ailn: i] lai]i
@
was not
r Set the program-mode selector f irst to the "manual"
]:tei:
li:it:1i.1:ll::
switched correctly.
position, and then once again to the "time set"
position.
l:ia:t:i:: li::ajir;!
position.
Radio receplion is satislactory, but the inpul sound source cannot be changed, stalions cannol be changed, and/or lhe power cannot be turned ofl. Sound is interrupted when the programmode selector @ is moved to the "read" position during reception ol a radio broadcast. The unit is operating under the control of the timer's programming.
:::t&::
l:l:::;tt:
.l:ii:i:.rr:.ltl
irial:at:':aai
. Set the program-mode selector @ to the "manual" position, and then operate the unit as desired.
::liii
it*il:i:'i]:u
i.i:i:i:!l
When the program-mode selector is set to the "read" position, no sound can be heard, because all functions are turned off.
. Operate the unit with the program-mode selector set
to the "auto" position or the "manual" position.
|:::cr
:il:i.r:::l::i auiiir:t:itf
ar,lr.iri.:rrli.:
-20-
The lunctions (except the clock/timer) ol this unit are interrupted while listening to the radio. Power is not turned on and/or oll at the time(s) programmed inlo the timer. Sound is suddenly interrupted while listening to the radio, and operation remains abnormal even though various controls and buttons are manipulaled.
The timer has turned the power off , as programmed.
. Move the program-mode selector @ to the
"manual" position and continue the radio listeni ng.
E
The timer-memory buttons @ were not correctly used for timer programming.
rCorrectly program the timer after carefully reading
the sections "How to program the timer" and "Timer programming procedures" on page 14 and pages thereafter.
Caused by the adverse influence (the "discharge" phenomenon and the "oscillation" phenomenon) of nearby electric equipment, etc., such as f luorescent lights, a television set, a small series motor, electric switches, rectifier. etc.
rUse th.is unit and such noise-producing equipment
farther apart.
o
Provide a noise-prevention device, either in this unit
or the offending equipment. Alter taking the above counlermeasures, the lollowing steps should also be lollowed: '1 . Disconnect the power cord f rom the AC outlet, and then remove the batteries. 2. lnsert the batteries once again (refer to Bage4.), and connect the power cord to the AC outlet.
rne
appears on the display aller a power lailure or
f{l
indication
The batteries are too weak to serve as an effective alternative to AC power during a power interruption.
other interruplion ol
power. Sound is interrupted during operation. Speaker system connection wires are shortcircuited. (The protection circuitry of the amplifier has functioned.)
oReplace the batteries with new ones. Note that the time display, the preset radio broadcast stations, the timer programming, and the ",Tost-recent" memory are all cancelled, so that it is necessary to make the time setting. etc. once again.
o lf
sound sti I can not be heard after checki ng the connections to each component of the system (especially from the power amplifier to the speaker systems. etc.), request service from the store where the unit was purchased or from an authorized Technics service center.
I
-21-
7T-
'l
(DrN 4s 500)
I
FM TUNER SECTION
87.9-107.9 MHz (0.2 MHz steP) 87.50-108.00 MHz (0.05 MHz steP) 2.0pV (lHF, usable) 2.0pV (300o), 1.0sV (75o) 1.8 sV (300C)), 0.9 pV (754)
1.6
T
AM TUNER SECTION
Frequency range
Sensitivity
s/N
30 dB
s/N 26 dB s/N 20 dB
Total harmonic distorlion MONO (normal) STEREO (normal)
522 kHz-161 1 kHz (9 kHz step) 530 kHz-1620 kHz ('10 kHz step) Sensitivity (S/N 20 dB) 3O pY,250 pV/m 55 dB Selectivity (19 kHz) lmage rejection at 999 kHz 45 dB 40 dB !F reiection at 999 kHz Frequency range
/V
(3004), 0.8
IHF 46 dB stereo quieting sensitivity
/V (75O) 24.5 pV/75Q
0.080/o
0.1
o/o
I
TIMER SECTION
Quartz-lock type 24-hour indication Within +10 sec. monthly (at 25'C) 24-hour programmable;
everyday (2 times), once only (1 time) On/off of program source (FM, AM) Designation of preset station 1 minute-23 hours, 59 minutes (at 1-min. intervals) Once, everyday 2, everyday 1 About 2 months (without AC power)
Clock
Precision Functions
s/N
MONO
STEREO 70 dB (78 dB, IHF) 65 dB (73 dB, IHF)
2O
Frequency response
Hz-15 kHz, *0.5 dB- -1.5 dB
60 22 1.0 70 90
Alternate channel selectivity normal +400 kHz super narrow t200 kHz Capture ratio lmage reiection at 98 MHz lF reiecllon at 98 MHz Spurious response reiection at 98 MHz AM suppression
Stereo separation 1 kHz 10 kHz Carrier leak 19 kHz 38 kHz Channel balance (250 Hz-6,300 Hz)
Programmable contenl
dB dB dB dB dB 90 dB 55 dB 50 dB 40 dB
Setting intervals Priority order Memory "back-up"
I
GENERAL
0.3v (0.6v, rHF)
Outpul voltage
-30 dB (-35 dB, IHF) -45 dB (-50 dB, IHF)
''1.9
+1.0 dB
PV
Limiting point
Bandwidth lF amplilier FM demodulator
180 kHz 1000 kHz
DC 4.5V Batteries (3 "AA" size batteries, Panasonic UM-3 or equivalent) 8W Power consumption AC 50 Hzl60 Hz, 110Y/120Y/22OV/24OV Power supply 430 x 53 x 300 mm Dimensions (WxHxD) (16-15/16" x2-3/32" x 11-13/16") 3.3 kg Weight (7.3 rb.)
Antenna lerminals
300n (balanced) 75O (unbalanced)
-22-
Schematic Diagram... Model ST-S4T
(
(This schematic diagram may be mod
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