Technics STG90 Operating instructions

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Technics STG90 Operating instructions | Manualzz
 CHUARTZ Synthesizer AM/FM Stereo Tuner
(DuAaRTZ Synihesizer LW/MW/FM Stereo Tuner
> 1-GS3OL
® Specifications differ according to the area code.
но. The “EK” area code, for example, indicates United Kingdom
т specifications.
e The "EK” indication is shown on the packing case and serial number
Before operating this unit, piease read these instructions completely.
Lear Sore Fan.
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
Ce a __ . Lm nde ea — SE EE - =-
These Operating Instructions are applicable to models ST-G90 and ST-G90L.
The functions which differ for the two madeis are indicated in the Operating Instructions.
e For United Kingdom ................ecncccauu eus 2 * Front Panel Controls and Functions .......... $
* Technical Specifications ....................... 2 e Memory Presettings.. Decnaroreneoecamacare В
» Suggestions for Safety ...................... .. 3 e Listening to Radio Broadcasts Nenearmarivaree. ‚ 10
® BeforelUse ....... oom, 3 ® FM automatic RF/automatic IF ..._. vera .
e Accessories .................. 0... 0. mier. ñ * Recording FM broadcasts..... Gars ses e canne 11
* Connections ... .. ee... 4 . Troubleshooting Guide ....... TT 12
e Antenna Connectlons........................... 5 e Maintenance teeter a nenane caer eravaneo ‚12
_The “EK” indication is shown on the name plate.
о ОО important О
UN procéeg às a TT а E
Mia a to the
в 7 CER: eT ; i LEE
Bra 1d ENT ie o BESA A ТЕТ MW = г kHal
Frequency range 87 50-108 00 MHz 38 5 kHz —75 dB 80 dB, IHF} LW (st 254 KHz) 40 da
87 525— 108.00 MHz (+25 kHz shift) Channel balance {250 Hz- 6.300 Hz) =1.0d8 IF rejection
Sensitivity 1.5 uV (IHF, usable) Limiting point 0.85 uv MW (at 599 kHz) 50 dB
S/N 30 dB 1.3 uv {75h Bandwidth LW {at 254 KHz) 25 08
S/N 26 dB 1.2 uV (7505 IF amplifier 180 kHz
S/N 20 dB 0.9 uv {750} FM demoduiator 1000 КН: MM GENERAL
IHF 45 dB stereo quieting sensitivity 25 7750 Antenna terminals 750) {unbalanced} __ e
Total harmonic dislortion Output voltage 0.3Y (0.6V IHF}
MONO (normal) Qa15% B AM TUNER SECTION Power consumption 95%
STEREO (normal) 0.02% Power supply
S/N Frequency range For United Kingdom and Austrailia
MONO 80 dB (86 dB, 1HF) MW AC 50 Hz/6C Hz, 240V
STEREC 74 CB (79 58, IHF) {For Europe and Australia) For continental Europe AC 50 Hz°50 Hz 220V
Frequency response
4 Hz—15 kMz, +0.5 ¢B~—-Q.5 dB
Alternate channel selectivily
normal =400 kHz 55 ¢B
super narrow +200 kHz 30 dB
Capture ratio 1.0 dB
image rejection at 98 MHz 130 dB
IF rejection at 98 MHz 130 2B
Spurlous response rejection at 98 MHz 120 dB
AM suppression 55 dB
Stereo separation
1 kHZ 60 dB
10 kHz 45 dB
522 kHz-1611 kHz (9 kHz-steps)
530 kHz— 16720 kHz (10 kHz-steps)
(For Saudi Arabia and others)
531 kHz- 1602 kHz(9 kHz-steps)
530 kHz— 1600 kHz (10 kHz-stens)
LW 155 kHz—-353 kHz (9 kHz-steps)
153 kHz-351 kHz {—2 kHz shift)
Sensitivity (S/N 20 dB)
MW 20 uv. 300 py/m
LW 50 uv
Selectivity {- 9 kHz)
MW (at 999 kHz)
LW (at 254 kHz)
50 sa
50 dB
For others
AC 50 Hz/60 Hz, 110V/127V/220V-/24DV
Dimensions (W- HD) 430 x 93 5 288 mm
(16-30/32" x 2-22/32" x 9-11/32")
Weight 3.5 ка (77 }
1 Total harmonic distortion is measured by the
digita! soectrum ara'yzer (44 9. 3045 system).
2. Specifications are sybiect to change without
notice Weight and dimensions are approxi-
-—! —_ Fa
Suggestions for Safety
E Use a standard electrical AC wall outlet
i. Use from an AC power source of high voltage, such as for alr
conditioners, is very dangerous.
Be extremely careful not to make a connection to the elec-
trical outlet for a large air conditioner or central-heating unit
which uses high voltage, because there is the possibility of
2. A DC power source cannot be used.
Be sure to check the power source carefully, especially on a
ship or other place where DC is used.
Hl Connection and removal of the power cord plug
1. Wet hands are dangerous.
—.. Adangerous electric shock may result if the piug is touched
_ by wet hands.
_ = Don't pull the power cord.
~~ Always grasp the plug; never pull the cord itself.
HM Never attempt to repair or reconstruct this unit
_ A serious electric shock might occur if this unit is repaired,
disassembled or reconstructed by unauthorized persons, or if
- the internal paris are accidentiy touched.
"2 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
7 through the ventilation holes, etc. of this unit.
E Turn off after use
_ If the unit is left for a long time with the power on, this will not
—- only shorten its useful operation life. but may also cause other
— —voltage selector.
Use a minus (—) screwdriver to set the voltage selector (on the
rear panel) to the voltage setting for the area in which the unit
will be used.
E |f water is spilled on the unit
Be extremely careful if water is spilled on the unit, because a fire
or serious electric shock might occur. Immediately disconnect
the power cord plug, and consult with your dealer.
E Place the unit where it will be well ventilated, and
away from direct sunlight
Place this unit at least 10 cm (4”) away from wall surfaces, etc.,
and away from direct suniight.
H Keep the unit away from heaters, etc.
Heat can damage the external surfaces as well as internal cir-
cuits and components.
WB Avoid spray-type insecticides
[Insecticides might cause cracks or “cloudiness” in the cabinet
- Ex —=._0L= = Ев == Th Te - J -
and plastic paris of inis unit. The gas used in such sprays mignt.
moreover, be ignited suddenly,
Hl Never use alcohol or paint thinner
These and similar chemicals should never be used, because
they may damage the finish,
M If trouble occurs
If, during operation, the sound is interrupted or indicators 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,
{Ifthe power supply In your areais 117 Vor 120 V, settothe "127
Y” position.)
Note that this unit will be seriously damaged if this setting is not
made correctly. (There :5 no voltage selector for some
countries; the correc! voltage is already set.)
* AC power supply cord........ suce» nar. e. A ® AM loop antenna er eee tee aaa eee 1
__* Stereo connection cable TE Y a Y
(For United Kingdom only)
meme ce CHASSE |] | HP — - =
SET indoor antenna
Control input terminal (CONTROL INPUT):
This terminal is used for the connection of a timer for the
purpose of controlling the tuner by means of an external
control signal.
This unit
The configuration of the AC outlet and
ка. в AC power supply cord differs
7 according to area.
Household AC outlet
AC power supply cord }
Stereo connection cable (included) ; «E de
= (included) : — :
/ For United Kingdom onty—,
Household AC outlet
a |
T i}
| Fit a suitable plug to the AC
| power supply cord. |
Amplifier (option)
Antenna Connections
The Indication AM used here includes
both MW and LW for model ST-G90L.
Note: An outdoor antenna should be instalied by a competent technician only.
(Necessary in mountainous regions. inside
reinforced-concrete buildings, etc.)
For United Kingdom only
If FM antenna terminal is as shown below ——-—
Use the
a cable (option)
‘= For better FM reception
—— If an FM antenna is installed,
-— instal it so that signal strength is
‘maximized (by watching the FM
signal— strength display).
{Refer to page 7.)
& Attach to a wall {using tack or tape) facing in |
: ._. the direction of best reception. :
7... # Tack should not contact internal antenna
_-- -asire.
> + For best reception sound quality, an FM
outdoor antenna is recommended.
+ Disconnect this antenna if an FM outdoor
=... . antenna is installed.
cr antenna.
EAM outdoor antenna (option)
20 mm (25:32") 10 mm (3/87)
Be sure the shield braid
contacts the clamp.
This unii
If this antenna is not properly installed,
AM broadcasts will not be received.
Be sure to connect the AM loop antenna
even when an cutdoor antenna is used.
5~12m. (Necessary in mountainous regions. inside
reinforced-concrete buildings. etc.)
Use 5 — 12 m (16 — 40 ft.) of vinyl-covered
wire horizontally at the window.
inyl-covered wire {option}
. Pay attention to the following points when attaching the
.+ Do not attach it horizontaliy {to do so would impair
result in noise).
- When aftaching the antenna to a wall,
column or rack
AM loop
antenna (included)
Column az i
: р | 1
) AM antenna
holder (A) (included)
Find the height and direction of the antenna where
reception is best and then fix it vertically to the wall, rack.
* Do not attach it close to metal surfaces (to do so would
e Do not attach it close to power cords, speaker wires, etc.
(to do sO would result in noise).
® Do not attach it close to a tape deck (when the tape deck
is being used, chirping or beeping sounds may be
2. Connectthe AMIoop antennato the AM antenna terminals
located on the rear panel of the unit.
— When attaching the antenna to the unit ———
| This type of installation may cause impaired reception or |
I result in signal nose. If possible, attach the antenna to
о the rack. a wall, or a column.
| Move the antenna toward the right or left to find the point
of best reception.
| ° e
AM loop antenna
Hear pane! (included)
of the unit
AM antenna holder (B)
№ а с
Front Panel Controls and Functions
[1] Power “standby ©/on™ switch
(power “standby 5/o0n”)
This switch switches ON and OFF the secondary circuit
power only. The unit is in the “standby” condition when this
switch is set to the "standby 4" position. Regardless of the
switch setting, the primary circuit is always "live" as long as
the power cord is connected to an electrical outlet.
_ E]FMIF band selector (IF band)... ——
The built-in computer of this unit detecis ithe signal
condition and functions accordingly to select the FM IF band
automatically. This button :s used to change it manually.
[3] Memory-search button (memory search)
This button ts used to confirm a memory presetting.
if the button is pressed, the memorized frequency and
“channel” number will be shown one after the other in order.
[4] Memory button (memory)
This button is used when preset memory setting of the
preset-tuning buttons is made.
[s] Tuning contro! (tuning)
This control is used to select an FM or AM broadcast.
When turning the control to the left, the frequency change
downward. When turning the control to the right, the
fequency change upward.
[6] Tuning-mode selector/indicator (tuning mode)
Each time this selector is pressed, the selection changes, in
sequence, to ‘auto’, “manual” and “lock”.
At this position, broadcast stations are automaticalty found
when the tuning control is turned to the left or right until the
frequency changes.
At this position. the tuning control can be used to locate the
desired station.
At this position, the broadcast station now being heard is
icoked in. and other broadcast stations cannot be tuned 1o
even if turning the tuning control.
[7] Scan level selector (scan leve!)
This button is used for setting or confirming the level of the
reception signa! during automatic FM tuning.
(Ве!ег 10 page 3.)
[8] Preset-tuning buttons
(39 channel random preset tuning)
These Buttons arg used to preset Ft à and AM broadcast
~~ pressed 10 e the desired preset frequencies.
‘Role: =
Refer to pages 9—9 for information concerning preset
[9] Band selectors (band selector)
Press this button to listen to an FM broadcast.
freq shift:
When the button is pressed slightly longer. the reception
frequency increases by 0.025 MHz [25 kHz)
(The final figure of the frequency display changes to '?7 or
“7 y
In order to return to the original frequency indication, press
this button for about 2 seconds again.
AM: (For ST-G90L; MW)
Press this button to listen to an AM broadcast.
This button is also used to select a frequency step of either 9
kHz or 10 kHz.
When the AM button is pressed for about 4 seconds. the AM
frequency step will change 10 10 kHz per step.
{This step is set to 9 kHz belore shipment )
Set to the appropriate position for your locality.
LW: (ST-G9GL only)
Press this button to listen to an LW broadcast.
treg shift:
When the LW button is pressed for aboul 4 seconds during
reception of an LW broadcast, the LW frequency will
decrease by 2 kHz.
So, for example, to receive 153 kHz, tune to 155 kHz, and
then press this button
In order to return to the onginal frequency indication, press
this button for about 4 seconds again
Recording-level check button (rec leve!)
This button is to be used for adjustment of the recording
level when recording an FM broadcast. {Refer to page 11.)
Other operations cannot be performed while the recording-
level-check indicator 15 illuminated.
Ta perform other operations. first be sure that the recording-
level-check indicator is OFF.
- When there
FM mode seiector (FM mode)
If noise is excessive in stereo broadcasts, a switchover to
monaural reception can be made.
is a2 change to monaural reception, the
ilflumination of the FM mode indicator changes to the
“mono” position.
FM RF-band selector (RF band)
This button can be used to switch the RF bandwidth to either
the "normäl” width or the “super narrow™ width by manual
interference signais are removed if switched to “super
— [3] FM RF-band automatic-selector (auto RF)
[t sometimes happens, during the reception of FM
broadcasts, that a station other than the desired station is
received, or interference noise is excessive, even though
- there is no broadcast station other than the desired station
on a nearby frequency.
The reason for this is that interference signals are produced
in a frequency band in which there is actually no broadcast
station when two or more strong broadcast stations” signals
{interference signals) are input to the unit's “front end”
(input stage). These interference signals are known as
“cross modulation” interfernce signals, and they cause
interfernce noise to be heard in the signals from the desird
broadcast station.
This model is designed to eliminate such cross modulation
interference signals by automatically switching the band-
width of the RF {radio frequency; high frequency) band to
the "super narrow” bandwidth.
- sel freg only:
By lightly tapping this selector. the presence or not of
interference signals within the broadcast signals being
received is detected, and there is an automatic switchover to
either the "normaï” or "super narrow” circuitry as
— all preset ch:
If this selector is pressed and held for a slightly longer time,
the presence or not of interference signals within the
broadcast signals of all FM broadcas! stations that have been
preset to the unit's memory is detected. There is then an
automatic switchover to either the "normal” or “super
narrow” circuitry as appropriate, and then an entry is
automatically made (to the memory for these same
Shanneis’) of the “normal” of “super narrow” reception
E-The indication AM used here includes
606 MW and LW for model ST-G90L, |
Display section
[A] Quartz-lock indicator (quartz lock)
This indicator illuminates when tuned precisely to an FM or
AM station.
FM RF/IF band indicator (RF/IF band)
These indicators show the FM reception conditions.
(Refer to pages 10—~11.)
FM RF/IF automatic-select indicator (RF IF auto)
This indicator illuminates when the FM RF-band automatic-
selector is pressed.
[0] FM signal-strength display (FM signal)
This display usually shows the reception level of FM
broadcasts [maximum 86 dB}: when the scan-level selector
is pressed and held, the station-tuning level is displayed in
the sequence 30 — 40 — 50.
[Е] Recording-level-check indicator (rec) —
FM stereo indicator (stereo) —_
This indicator automatically illuminates when an FM stereo
broadcast is being received.
It will not illuminate if the FM mode selector is set 1
moraural mode.
[G] Memory indicator (memo)
This incicator illuminates when the memory button is
When FM broadcasts are being received, usually the “auto”
indication is illuminated. When the FM mode selector is
used to select monaural reception, the illumination of
the FM mode indicator changes to the “mono” position.
[1] Channel display (preset ch)
The channel number selected by the preset-tuning buttons
is displayed.
[J] Digital frequency display
The reception frequency of the FM or AM broadcast selected
by using the tuning control or the preset-tuning buttons is
Memory Presettings ame maso
With this unit you may preset as many as 39 radio broadcast stations: FM/AM random presetling. After broadcast stations have been preset as
described below_any desired station can he quickly and easily selected.
Automatic memory presetting |
ST-G90 The FM broadcasts station and AM station will be automatically preset to “channels” 1 through 39for FM and2'through39
for AM, respectively.
ST-G90L ihe FM broadcasts station, MW station, and LW broadcasts will be automatically preset in "channeis” 1 through 39 for FM, 21
through 39 for MW. and 31 through 39 for LW. respectively.
Notes: When AM (MW) is automatically preset, the FM stations on “channels” 21 through 39 wil! be replaced by the new AM (MW) stations.
When LW is automatically preset. the AM (MW) stations on “channels” 31 through 39 will be replaced by the new LW stations.
Là My Select the desired band by using the band selecor.
Before presetting the broadcasting stations, press to select the appropriate frequency
step for your locality. (Refer to page 6.)
FM RF, IF automatic-select indicator
FM signal-strength display
e E В - selectar
FM AFAF band Memory indicator
Press and then release when the frequency Set to the lowest frequency.
Indi s to change.
dication begin с g | ST-G90
The frequency will change upward, and the automatic
presetting will begin with the next broadcasting station. FM: 87.50 MHz
It will continue to preset consecutive broadcast stations. For Europe and Australia
CF Fa rece hon only AM: 522 kHz (9 kHz step) or 536 kHz ;10 kHz step!
A = For Saudi Arabs h
J Press and hold the “auto RP” | releases when £31 Ez ote a or 530 kHz [10 kHz step)
the frequency changes. D1 BEM Р
(The FM RF IF automatic-select indicator illuminates, and ST-GSOL
the memory indicator flashes continuously.)
Interference signals for all FM broadcast stations entered TM: 87.50 MHz
in the memory will be detected, removed, and data will be MW: 522 kHz (9 kHz step) or 530 kHz {10 kHz step)
entered in the memory. LW: 153 kHz (2 kHz shift) or 155 kHz
The reception condition is displayed in he FM AFAF band
indicator. (Refer to page 10.) Tuning Ç В | ‚
To discontinue interference signals search, press “auto @ Select the “manual” mode by using the “tuning mode”.
RE”. {The "manual” mdicator wi Numinete.)
After the search for interference signals of the broadcasting ® Tune to the above frequency 5y using the “tuning”.
station now being received finishes, it stops. and the display
returns to the display of the frequency.
6 Confirm the names (call signs, etc.) of the _
broadcasting stations which are preset to
each channel, and enter them on the station
memory file sheet (page 10).
— To set the tuning level (received signals)
When the tuning level of FM signal reception is set, only G) Aelease when the desired level is reached.
broadcast stations with signals of that leve! ar higher are {There will then, about wo seconds later, be a return to the
entered in the memory. Do this before step 4. display of the signal strength of the signals of the broadcast
(1) Press and hold the "scan level”. station now being received }
[The leve! wilt then be dispiayed in the FM signal-sirength
display. in the 30, 49, 50 sequence ]
= dey
a Notes:
+ 4
- Farautomatic presetting in areas where there are less than 39 FM stations, the remaining channels (through channel 39) will be left
empty. The empty channels can be filled by using manual memory presetting.
2. Ifanew broadcasting stationis presetinto a channel, the broadcasting station which was previously entered in that channel will be
automatically erased.
3. For AM broadcasts with extremely strong signal transmissions, the frequency memaorized may be slightly different from the correct
frequency If this occurs, use the manual memory presetting.
Stations can be freely preset to any desired channel.
Tune to the desired broadcast station by using the
md “tuning mode” and “tuning”.
“on” ( E— =) « Automatic tuning
Q) Select the "auto" mode by using the “tuning mode”.
@ Thé frequency changes as the “tuning” is turned; the tuning will stop
Select the desired band by using the when a broadcast station is located.
band selecor. Repeat this action until the desired broadcast station is located.
Before presetting the broadcasting stations.
Mote: When searching for a broadcast station by using the “auto”
press to select the appropriate frequency step mode, the search continues until a broadcast station is located.
for your locality.
1 - (Aster to nage 6.) — Testop, use the “tuning mode” to select the “manual” mode.
UR A PU мо! * Manual tuning
FM RF/IF (D Select the “manual” mode by using the "tuning mode”.
7 automatic-seleet © Turn the “tuning” to locate the desired broadcast station.
FM mode selector EM AF:1f band FM mode indicator
(See below.) indicator Memory indicator
6 Select the desired “channel”,
(The selected channel number will be displayed on the channe: display.)
* To preset channels 1 through 9: Press bution [1—9).
* To preset channels 10 through 19: Press button 1 and the second digit (0 — 9).
* To preset channels 20 through 29: Press button 2 and the second digit (0 — 9)
* To preset channels 30 through 39: Press button 3 and the second digit (0 — 9).
Lightly 1 tap t the “a “auto RF”.
Any interference signals in the FM
broadcast signals now being received
will be detected and eliminated.
E. [The FM RF IF automatic-select
indicator will illuminate.} Note: ‘ . .
В The reception condition is Make the entry without interruption between steps. If there is an interval of
_ - displayed in the FM RF/IF band about two seconds or mare between steps, you may not obtain the desired
To indicator. settings. In this case. perform steps 5—6 again to reset the memory as
(Refer to page 10.) necessary.
Press. (The memory indicator will ¢
If the button is pressed continuously, the 7 Enter the name (cali sign, etc.) of the preset broadcasting
frequency will begin io change, and the = 2x = a an aun . a a am
memory will be preset automatically. f siatton on the station memory file sneeï (page 10).
To stop the automatic memory This completes the procedures for presetting radio broadcast
presetting, press this button once again. frequencies. The other preset-tuning buttons can be preset in the same
way by following steps 2 through 7.
FM mode (FM auto, mono) memory
т With this unit, it is possible to enter into the memory FM ZU Follow above steps 1 through 4.
broadcast stations in the monaural mode. This is convenient (7) Press the "FM mode" to select the "mono"
= when entering into the memory an FM broadcast station that is (The “mono” of FM mode indicator will illuminate.)
— broadcasting FM stereo signals in which there is much noise. 1) Follow above steps 5 through 7
Listening to Radio Broadcasts
Have you completed the “Memory Presettings” (page 8)?
Press the desired channel (1 - 39).
* To select channels 1 through 9:
Press button (1—9).
» To select channels 10 through 19:
Press button 1 and the second digit (0 — 9).
To select channeis 20 through 29:
Press button 2 and the second digit (0 — 9).
* To select channels 30 through 39:
Press button 3 and the second digit (0 - 9).
For station selection using the “tuning”
Follow steps 2, 3 of "Memory Presett:ngs” on page 9
1 Switch the amplifier ON, and set it for listening
to radio hroadcasts.
Г шее он == т свт све тва “]
FM RF/IF band indicator
Concerning reception condition of FM broadcasts. (Refer to page 11.)
The reception conditien of FM broadcasts is displayed as described below, .
Desired station i
-——— q
| IF anctinn
== == ея нее = =
Desired station
Li nn
Other broadcast station signals (interference signals)
2 _ Other broadcast t station signals (interference Stonaisi 4. —.
; modulation interference. — desired broadcast station are es and ‘thers arg ng. --
= RF super Narrow ! me A interference signals, —..———. —.=—- meena
= The... :, partof the indicator will illuminate(at one side or both IF super narrow: :
sides) if cross modulation interference or noise is mixed with , The. parto! the indicator will illuminate (atone side or both :
— the broadcast t signals. _ ) sides) if interference : ihe broadeast signals,
mes sa mé TS E A TE E EA. SAR AS SES thé Signais ar ne desired broadcast static: 5 arc weak there
will be no illumination of indicate interference. ] .
“Station Memory File Sheet ВЕ Ш 1011 В
оснло | CH2 | CH3 | CH4 | cH5 | cH8 | снл | сна | сн. | CH.10 | CH11 | CH.12 | CH.13
| CH.14 CH.15 | CH.16 CH.17 | CH.18 | CH.19 | CH.20 CH.21 | CH.22 | CH.23 | CH.24 | CH.25 CH.26
| CH.27 CH.28 | CH.23 CH.30 ; CH.31 CH.32 CH.33 Ct,34 | CH3S | CHIE | CHA? | CHIE | CHIY
Ш “Most-recent” memory
The most-recent memory is a system by which the unit
“remembers” the FM or AM broadcast station last heard when
this unit is switched OFF, and automatically tunes to that station
the next time the power is switched ON.
E “Back-up” memory
This is the function which preserves the preset memory and
most-recent memory functions. In the event of a power failure,
or if the power cord of the tuner 18 disconnected from the
electric outlet, the back-up memory will preserve the preset
A yr
ri Tin Y ar Li TEE recent IRENE
approximately one week.
A finatana far ar lames
— 10—
E !f the memory setting is erased
The memory settings will be erased in the following cases.
For example:
1) If the power cord is disconnected from the electric outlet,
2) If an audio timer is used and the timer does not operate the
tuner for a week Or longer,
3) If a power failure occurs. etc.
If any of the above occurs. the memory will have to be reset.
If the power supply is interrupted tor a week or longer, set the
VASALLO Cama ada Ea Te. к E Ham
more. Then reprogram the memory.
Ta de
* posit: vn Tor ar
FM automatic RF/automatic IF
In order to improve tone quality during reception of FM broadcasts when the FM band is crowded with many FM broadcast stations, this
model includes “normal” cirçuitry and “super narrow”
circuitry both for the RF {radio frequency) stage and for the IF {intermediate
frequency) stage. This special circuitry functions to detect interference signals when several conflicting signals are being received. and to
automatically select the optimum reception conditions. (There is an automatic switchover to the "super narrow” circuitry when interference
signals are present, and fo the “normat” circuitry when they are not a problem.)
The “super narrow” ¢
rrcuitry of the RF stage eliminales interference signals caused as the result of two or more strong broadcast station
signals. The “super narrow” circuitry of the IF stage eliminates interference signals caused by broadcast station signals on adjacent
Other broadcast
station signals
{interference signals
Frequenc >
-Daslred a у
Cross modulation interference signals
Automatic switchover
(Manual switching is also possible.)
ET +
=| Signal super narrow
.| strength |
| © N Frequency >
Other broadcast Desired
bodice miele station
Slatin зе
_| (interference signals)
= ERY TE-BAN selecto {FL a Ta CE |
Signal | normal
strength .
\ Frequency
Other broadcast station
station signals
(interference signals)
Automatic switchover
(Manual switching is also possible.)
-— x -
Г usas _
Other broadcast
station signals su
(interference signals)
Recording FM broadcasts
This model is provided with a recording-level check button thatis convenient for determining the optimum recording level before beginning
the recording, The standard reference signals are rectanou
larwaves andth
e ыя
e setting ofthe signal level is to an qutnut level of 50% modulation.
— E Amd — pr A Ng 3
Do not press the “rec level” while a recording is being made, because to do so will interrupt the recording
indicator (rec)
| Recording-level-check
1 Press the “rec level”.
(Therecording-level-cneck indicator will illuminate, andthe
check signal will he emitted)
— {1 —
Adjust the recording level by using the
recording level control of the tape deck.
# For VU meters and level meters:
Adjust so that the indication needle is about —2 VU or
e For peak-level meters:
Adjust so that the indicat:on is about —2 dB.
Press the “rec level”.
o | Rea FE
{The lumination of the recording-level-check indicator will
cfm i
is. ;
Troubleshooting Gulde
Betore requesting service for this unit, check the chart below for a possible cause of the problem you are experiencing. Some simple checks
or a minor adjustment on your part may efiminate the problem and restore proper operation.
If you are in doubt about some af the check points, or if the remedies indicated in the chart do not solve the problem, refer to the directory of
Authorized service centers (enclosed with this unit) to locate a convenient service center, or consult vour Technics daaler for instructions.
EL о == = = = — == оон ое — „я = = экон ОН нтк: =
==" Problem — | Probable cause(s) | | Suggested remed, |
While elistening to FM broadcasts
y noise ts À Due to the differences between a monaural and | * Try reducing the treble sound by using the treble
a stereo signal, & higher level of signal strength control of the amplifier.
Is required for proper stereo reception. If the « Sat the FM mode selector to the monaural
signal level is low, a hissing noise may be position. (Note that the broadcast wilt then be
produced on the stereo channel. heard as monaural sound.)
Poor location and/or direction of the antenna. + Try changing the location, height and/or
Transmitting station is too far away. direction of the antenna.
— A mm = —
= ii an indoor antéñna is DEINQ USES, Crange 10 ап
. | . outdoor antenna.
a || ; e Try using an antenna with more elements.
rey indicat Poor location and/or direction of the antenna. + Try changing the location, height and/or
Transmitting station is too far away. direction of the antenna.
* ¡fan indoor antenna is being used, change to an
o o outdoor antenna.
Nearby building or mountain. * Try using an antenna with more elements.
[Multipath distortion is being caused by the
mutual interference of broadcast signals
received directly from the transmitting station
{direct waves) and signals being reflected from
nearby buildings or mountains (reflected
waves). ]
Le Aa to AM broadcasts
{Dest” sourd Is Unit is being used at the same time as the » Turn off television set, or use this unit farther
television set. away from it,
The AM loop antenna connection wires are too ® Place the antenna connection wires and the
close to the power cord. power cord farther apart.
The power supply frequency from the power e Install a special Outdoor antenna.
cord is modulated and heard from the
В Ш я
Е speakers.
atrae Caused by the “discharge phenomenon and * Try placing this un: farther away from such
online the “oscillation phenomenon” of electric equipment.
Ela j appliances (such as flucrescent lights, TY, e Install noise-prevention equipment on this unit or
—— | smail series-type motors, rectification on the electric appliance.
equipment, etc). _ I
ICE == = TEE To —
To clean this unit, use a ОЙ. dry cloth. Wipe once again with a salt, dry cloth.
ifthe surfaces are extremely dirty. use a soft cloth, dipped into a Never use alcohol. paint thinner, benzine, ror a chemically
soap-and-water solution or a weak detergent solution. treated cloth to clean this unit.
Wring the cloth well before wiping the unit. Such chemicals may damage the finish of your unit.
— 12 —


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