Technics Quartz ST-G7 User manual

rechnics
(fLr^r.Tz Synthesizer
FM/AM Stereo Tuner
ST.G7
OPERATI NG I NSTRUCTI ONS
Before using this unit, carefully read these operating instructions and
the enclosed suggestrons for safety.
I
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9"on th,"* 9o.o
Technics. The science of sound. Our name repre-
sents over 100 high quality audio products, in every
price range.
From our revolutionary direct-drive turntables to our
highly acclaimed linear-phase speakers, Technics
quality and value have become almost legendary
among audio enthusiasts.
Our truly complete selection of turntables (in-
cluding belt-drive, direct-drive, and quarlz-locked
models with varying degrees of automation) now
includes an exciting line of linear tracking turntables
with zero tracking error. Another innovation, direct-
drive cassette decks, is available in both slim and
micro formats. In fact, with Technics micro series,
you can assemble an entire system of the highest
quality with truly compact dimensions. Features like
our new computer-drive new class-A amplification
and quartz-synthesizer tuning have created tre-
mendous excitement among reviewers and cus-
tomers alike.
Amplif iers, tuners, headphones, microphones, car-
tridges, open reel decks, sound processors-we are
proud of all our high quality equipment, and we are
constantly seeking to improve our products in terms
of performance and handling ease. lnAddition, our
conf idence in the reliability of our merchand ise
(demonstrated by our warranties) and the reasons
for our enormous and rapid growth become
obvious.
G..ONT,E.,Nil
o ACCESSORIES 2
o MAINTENANCE OF EXTERNAL SURFACES 2
o PRODUCT SERVICE . 2
o TECHNICAL SPECIFICATIONS 3
o "MOST-RECENT" MEMORY AND
..BACK.UP" MEMORY. 3
oTO PREVENT ERASING THE MEMORY 3
o STEREO SYSTEM COMPONENTS
AND THEIR CONNECTIONS . . 4
o FRONT PANEL CONTROLS
AND THEIR FUNCTIONS 6
o HOW TO PRESET RADIO BROADCAST
FREQUENCIES 8
oLISTENING TO RADIO BROADCASTS 10
oTROUBLESHOOTING GUIDE Back cover
fi,CC.ESSORIES
o FM indoor antenna. . 1
o 300-ohm - 75-ohm irnpedance matching transformer . .. 1
o F-type plug/ring (large and small) 2
o AM loop antenna 1
o AM antenna holders 2
o Screws 2
o Stereo connection cable. . . 1
o AC power supply cord 1
MAINTENANCE OF EXTERNAL
SURFACES
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, benzine, nor a chemically
treated cloth to clean this unit.
Such chemicals may damage the f in ish of your unit.
PRODUCT SERVICE
I Warning concerning removal of covers
This unit should be serviced by qualified technicians only. No
service information is provided f or customers.
Should you r "Technics" product ever require servicing, refer to
the Directory of Auth orized Service Centers or your f ranchised
"Technics" dealer for detailed instructions.
I Location of serial number
You will find the serial number located on the back of the unit.
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT
REMOVE SCREWS
NO USER.SERVICEABLE
PARTS INSIDE
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL
The lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of uninsulated
"dangerous voltage" within the product's
enclosure that may be of suffrcrent magnitude
to constitute a risk of electric shock to persons.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and main-
tenance (servicing) instructions in the literature
accompanying the appliance.
The model number of this product may be found on the back of
the unit; and the serial numberon the label affixed to the back of
the u n it.
You should note the model and serial numbers of this unit in the
space provided, and retain this booklet as a permanent record of
your purchase to aid in identification in the event of theft.
MODEL NUMBER
SERIAL NUMBER
A
A
WARNING:
TO PREVENT FIRE OR
DO NOT EXPOSE THIS
MOISTURE.
SHOCK HAZARD,
PRODUCT TO RAIN OR
2
A\A
\
CAUTItlN
BISK (lF ELECTBIC SH()CK
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(tHF',78)
I FM TUNER SECTION
Frequency range
Sensitivity
Total harmonic distortion
MONO (normal)
STEREO (normal)
Dynamic range
Frequency response
Alternate channel selectivity
normal +400 kHz
super narrow +200 kHz
Capture ratio
lmage rejection at 98.1 MHz
lF rejection at 98.1 MHz
Spurious response rejection
AM suppression
Stereo separation
1 kHz
10 kHz
Carrier leak
19 kHz
38 kHz
Antenna terminal
I AM TUNER SECTION
Frequency range
Sensitivity (S/N 20 dB)
Selectivity (+10 kHz)
lmage rejection at 1000 kHz
lF rejection at 1000 kHz
I GENERAL
Output voltage
Power consumption
Power supply
Dimensions (WxHxD)
Weight
87 9-107 9 MHz (200 kHz step)
87 50-108 00 MHz (50 kH,z step)
12.8 dBf (1.2 ttV/75 Q, IHF'58)
0.0 1 o/o
0.02o/o
116 dB
4 Hz- 18 kHz, *0.2 dB, -0.5 dB
at 98.1 MHz
55 dB
25 dB
1 0 dB
105 dB
110 dB
110 dB
70 dB
65 dB
50 dB
-70 dB
-70 dB
75 ohms (unbalanced)
530 kHz-1720 k1z (10 kHz step
522 kHz,-1629 kHz (g kHz step
20 pV,290 pV/m
55 dB
40 dB
6s dB
fixed 0 6V
1'1 W
AC 120V. 60 Hz
(16-30/ 32" x::?J,:l X ?l:r[I
4.1 kg
(e0lb)
"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 f unctions of this unit are turned off , and automatically
tunes to that station the next time the power is turned on.
"Back-up" memory
Th is is the f u nction wh ich preserves the preset memory and
most-recent memory functions. ln the event of a power failure,
or if the power cord of the tuner is disconnected from the
electric outlet, the back-up memory will preserve the preset
memory and most-recent memory f u nctions for as long as
approximately one week.
TO PREVENT ERASING THE
MEMORY
1. Be sure to connect the power cord of the tuner to the
"UNSWITCHED" power outlet of the amplifier to be used.
2. lf the power supply is interrupted for one week or longer, the
memory settings will be erased.
For example:
1) lf the power cord is disconnected f rom the electric outlet,
2) lt an audio timer is used and the timer does not operate the
tuner for a week or longer,
3) lf a power failure occurs, etc.
lf any of the above occurs, the memory will have to be reset.
The memory in this unit is maintained by a gold capacitor. lf the
power supply is interrupted for a week or longer, set the power
switch of the tuner to the "on" position for thirty minutes or more
in order to recharge the gold capacitor.
Note:
lf the FM allocation setting is set to o.o5 MHz, the AM 1
kHzlstep frequency range becomes 530 - 1620 kHz. 0-
3
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Note: An outdoor antenna should be installed by a competent technician only.
FM outdoor antenna (option)
(Necessary in mountainous regions, inside
reinforced-concrete bui ldi ngs, etc.)
FM indoor antenno (option)
(Technics FM wing antenna: SH-F101 )
Note:
This rndoor antenna reduces the
effects of multipath distortion and
external noise sou rces (car eng ines,
etc. ) .
Use in areas where the transmission
signal is strong (transmission site is
in direct view).
Center conductor cover
Wff,ll?,:,,,,
wl-
Jmm
*- /F-ty pe plu g
= (included)
N
AM loop antenna (included)
After finding the best reception
position for the antenna, f ix it to a
wall, the rack, UIit, etc.
Note:
Be sure to connect the AM loop
antenna even when an outdoor
antenna is used.
,300-ohm *
impedance
transf ormer
AM outdoor antenna (option)
(Necessary in mountainous regions,
inside reinforced-concrete buildings, etc.)
Use 5 - 12 m (16 - 40 ft.) of vinyl-
covered wire horizontally at the
window.
Preparing an F-type plug
1. Strip off the coaxial cable cover and the center conductor cover.
Coaxial cable cover
*)illlll -tlierdbrab
l5 mm
2. Place the ring over the coaxial cable and turn back the shield braid.
Then insert the F-type plug between the shield braid and the center
cond uctor cover and crim p the ring.
R ing Turn back the shield braid
tW'-'-flH @ ffi*, rrrrrrrri,, ff{JHH' r
\ F-type plug Lr- CrimP the ring
Use either the small or the large combination of F-type plug and ring, whichever
best fits the coaxial cable being used.
FM indoor antenna (included)
o Unfold to T-shape, and attach to a wall
(using tacks or tape) facing in direction of
best reception.
o Disconnect this antenna if an FM outdoor
antenna is installed.
300-ohm feeder wire
( lf 300-oh m f eeder wi re
Tacks or tape
Vinyl-covered wire (option )
\7S-ohm coaxial cable
(option)
75-ohm
match ing
(included)
5 - 12 m--1
(16 - 40 ft.) I
4
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I How to use the AM loop antenna
Find the best reception position for the FM antenna, and then f ix
it in place on a wall, the rack, or the unit.
Pay attention to the following points when attaching the
anten na.
1 ) Find the heig ht and d irection of the antenna where
reception is best and then fix it vertically to the wall, rack,
etc.
2) Do not attach it horizontally (to do so would impair
reception).
3) Do not attach it e lose to metal surfaces, power cords, or
speaker wires (to do so would result in noise).
4) Do not attach it close to a tape deck (when the tape deck is
being used, chirping or beeping sounds may be received).
1. When attaching the antenna to a wall, column.
Column
\l ,*ra,l
-l illkp-J F
tJilltfi-iry
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AM antenna
holder (A)
(included)
AM loop anten na
(included)
Computer control (COMPUTER l/O TERMINAL)
terminal
fhis terminal is for connection of a computer-
controlled audio selector and other components expected
to be marketed in the future.
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
sig nal.
2. W hen attach ing the anten na to the rack.
3. When attaching the antenna to the unit.
4. lf a hook is used
Hook (option)
A M loop anten na
(included)
AC power supply cord (included)
The power cord of this unit should be connected to the
"UNSWITCHED" power outlet of the amplifier; if the
power cord is connected to a "SWITCHED" outlet, the
preset memory may become erased when the amplifier
is tu rned of f
Stereo connection
To the tuner input
am plif ier.
cable (included)
term inals of the
AM antenna holder (A) (included)
of the rack
Rear panel
AM antenna holder (B)(included)
3.# -----'
/2<m
Rear'panel It AM tr
N
Hear panel 'l tt_ AM loop antenna
of the unit R( (inctuded)
5
RL
RL
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Power switch
FM stereo indicator
FM lF band indicators
Quartz-lock/FM muting off indicator
Digital display
Memory indicator
Channel disPlay
Preset-tuning buttons (1 ^"16)
Band selectors
FM mode selector @ Gontrol panel
door release
Memory button
FM muting offlscan level selector
FM lF band selector
FM signal-strength indication button Tuning buttons
Recording-level check button
O Power switch (power)
Before turning the power on, make sure the volume control
of the amplif ier is set to the mtnimum ("0") position.
O fU stereo indicator (stereo)
This indicator automatically illuminates when an FM stereo
broadcast is being received.
Note:
It will not illuminate if the FM mode selector is set to the
"mono" position.
O fn[ lF band indicators (FM auto lF)
normal[]:
This indicator will illuminate if the signal is strong and there
is little effect f rom interference.
super narrow fT:
This indicator will iluminate if the signal is weak an d/or there
is interference.
The illuminatton of the left and/or right parts of the indicator
indicates that interference waves are present within 300 kHz
(left: -, right: +) of the tuned frequency.
O Quartz-lock/FM muting off indicator (quarlz lock/FM
muting off)
This indicator illuminates when this unit is precisely tuned to
the transmission f requency of a radio broadcast.
Note that this indicator may illuminate if the FM muting
offlscan level selector has been set to the "off" position in
order to receive a week radio broadcast.
O Digital display
The broadcast frequency, scan level indication of the FM
muting offlscan level selector, the frequency of the
recording level signal (0.33 kHz), and the FM signal strength
are displayed.
@ Memory indicator (memory)
This indicator illuminates when the memory button is
pressed.
To preset the memory manually, press the desired preset
tuning button while this indicator is illuminated (within
approximately 4 seconds).
lf the memory is preset automatically, the indicator will not
illuminate.
O Channel display
The channel number selected by the preset-tuning buttons
is displayed
O Preset-tuning buttons (1-16)
(FM/AM random 16ch preset tuning)
These buttons are used to preset FM and AM broadcast
frequencies into the memory of this unit, and are also
pressed to select the desired preset f req uencies.
lf the button is pressed momentarily, stations will be preset
to channels 1 -B (f ront channels). lf the button is pressed
slightly longer, stations will be preset to channels 9-16
(back channels)
Note:
Refer to page 8 for information concerning preset memory.
6
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O Band selectors (band selector)
FM:
Press this button to listen to an FM broadcast.
FM allocation:
A frequency step of either FM 0.2 MHzor FM 0.05 MHz can be
selected. Set to the appropriate position for your locality.
When the FM button rs pressed slig htly longer and then
released when the "AL 5" indication illuminates, the FM
f requency "step" will change to 0.05 MHz (50 kHz).
To return to the original FM 0.2 MHz, press the FM button
slightly longer, and then release it when the "AL 20"
indication illuminates.
AM:
Press this button to listen to an AM broadcast.
AM allocation:
A frequency step of either AM 10 kHz or AM 9 kHz can be
selected. Set to the appropriate position for you r locality.
When the AM button is pressed slightly longer and then
released when the "AL 9" indication illuminates, the AM
frequency "step" will change to 9 kHz.
To return to the original AM 10 kHz, press the FM button
slightly longer, and then release it when the "AL 10"
indication il luminates.
@ Control panel door release (push open)
lf any of the controls and selectors O through @ are to be
operated, press this button to open the glass door.
When this button is pressed, the glass door will open slowly
by means of a damper mechanism.
@ Memory button (memory)
This button is used when preset memory setting of the
preset-tu n ing buttons is made.
There are two types of memory presetting: manual and
automatic.
Refer to page B for information concerning preset memory.
@ Tuning buttons (tuning)
These buttons are used for tuning to the desired broadcast
stat io n.
lf the button is pressed momentarily and then released, the
f requency will change at intervals of 0.2 MHz (or 0.05 MHz)
for FM and 10 kHz (or 9 kHz) for AM. lf the button is pressed
slightly longer and then released, the station will be selected
automatically. lf the broadcast signals are weak, it may not
be possible to make automatic selection. lf this occu rs, make
the selection manually.
down:
When this button is pressed, the frequency will change to a
lower f req uency.
up:
When this button is pressed, the frequency will change to a
h ig her f req uency.
FM mode selector (mode)
This unit automatically switches into the stereo mode when
a stereo broadcast is received. Press this button to listen in
the monaural mode. The FM stereo indicator will not
illuminate in the monaural mode.
FM muting offlscan level selector (muting)
This selector is used when releasing the FM broadcast
muting function and when setting the scan level for FM
broadcasts.
Stat ion
(D FM lF band selector (tF band)
For selection of the FM lF band.
The built-in computer of this unit detects the signal
condition and f unctions accordingly to select the FM lF band
automatically. This button is used to change it manually.
(D FM signal-strength indication button (signal)
lf this button is pressed during reception of an FM
broadcast, the signal strength (the strength of the signal of
the broadcast being received) will be displayed within a 2 dB
acc u racy .
If the strength of the signal being received is 50 dB or more, a
symbol (r ) will appear between the number and dB to
indicate that a strong signal of 50 dB or more is being
received. The signal will become saturated at 50 dB or more.
ln order to resume the f requency display, press the button
once again.
(p Record level check button (rec level)
This button is to be used for adjustment of the recording
level when recording an FM broadcast.
When this button is pressed, the microcomputer f unctions to
emit a reference signal of precisely 333 Hz trom the output
terminals of this unit. The word "CAL" (calibration) and then,
soon thereafter, "0.33 kHz" will be shown by the digital
d isplay.
Adfustment ol the recording level
Use the input-level control(s) of the tape deck to make the
adjustment while watching the recording-level meters.
o For VU meters and level meters.
Adjust so that the indication is about +2 VU or +2 dB.
o For peak-level meters:
Adjust so that the indication is about -2 dB.
Notes:
1) Because the ideal recording level is apt to vary depending
upon the program source and the characteristics of the
tape deck, the adjustment should be made by also
considering those factors.
2) Don't press the operation buttons of th is un it d uring a
recording. lf they are pressed, the recorded sound may be
d istu rbed.
Releasing the muting lunction (off)
ln mountainous areas, etc., where broadcast signals are
weak, breakup in the sound can be lessened by lightly
pressing the button. When this is done, the muting is
released only for the station being received.
However, when a tuning button is pressed to begin
scanning again, the former scan level will be used.
Setting the scan level (scan level)
This level setting is effective only for the automatic preset
memory and auto tun ing.
When the button is held down, "dB" will be displayed and
the numbers 30,40, and 50 will be displayed in order.
When the desired level is reached, release the button.
The higher the level, the more noise is reduced. Stations
with good reception can use " a high level", but stations
below the set level cannot be received.
ln order to receive these station, the level has to be reset.
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HOW TO PRESET RADIO
BROADCAST FREQUENGIES
lmportant!
lr:-fl
AM loop antenna
This antenna must be installed
to receive AM broadcasts.
stat ion s.
Presetting back
channels (CH 9- 16)
This unit is used to preset as many as 16 radio broadcast
frequencies: FM/AM random presetting. After broadcast fre-
quencies have been ;:reset as described below, any desired
station can be quickly and easily selected by simply touching
one button.
t Memory presetting
There are two types of memory presetting: automatic and
manual. Select whichever is preferred.
OConfirm the names (call signs, etc.) of the broadcasting
- stations which are preset to each channel, and enter them on
the station memory f ile sheet (page 11).
To check the front channels (CH 1-8):
I Belore memory presetting
Each button is used to preset two
Presetting front
channels (CH 1-B)
tP ress
momentarily.
bPress slig ht ly
lon ger.
Beginning at the frequency indicated by the digital display, the next I consecutive FM broadcasting stations and AM broadcasting
stations will be automatically preset to "channels" 1 through 16 for FM and g through 16 for AM, respectively.
Note that in mountainous or remote areas, broadcasting stations which have weak broadcasting signals cannot be automatically preset
into the memory.
Adiustment to FM broadcast signal strength is possible.
Press and hold the button. (Will change to dB indication.) Release the
button when the desired scan level indication 130, 40 or 50 dB) is
displayed. (When the scan level is set, it will return to frequency display.)
A broadcast signal stronger than the set level is memorized.
Press the "FM" or "AM" button.
Power: "on" ( r+r
Before presetting the broadcasting station,
press the band selector to the appropriate
position for you locality.
(Refer to page 7.)
Press
momentarily.
db
To check the
Press slightly
lo nger.
O Press the button and
hold slightly
(frequency will change
continuously).
Frequency stored in the
memo ry and chan nel n u m ber
are d isplayed.
CH
tr..6. tr,J t _
rM UU. I u,z _-i
back channels (CH 9-16):
Frequency stored in the
memory and channel number
are d isp layed .
Press. When the frequency
indication begins to
chah g€, release.
F&
(The frequency will change upward,
and the automatic presetting will begin
with the broadcasting station of the
lowest fre quency and will continue in
o rde r.
Note that the channel display
illu m inates each time a broadcast
station is preset in the memory,
thus indicating which "channel" has
been preset.)
AM -i i lj rH1
CH
L.?
o To preset FM broadcasting stations: Set to 87.9 MHz (or 87.50 MHz):
. To preset AM broadcasting stations: Set to 530 kHz (or 522 kHz).
@ Release it at 87.9 MHz (or 87.50 @ Press the button
MHz) for FM or 530 kHz (or 522
kHz) for AM, and then press the
button again momentarily
(frequency change will stop).
momentarily (frequency will change
each time the button is pressed), and
tu ne to one of the above f requencies.
*
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Stations can be f reely preset to any desired channel.
Adiustment to FM broadcast signal strength is possible
for automatic tuning.
Press and hold the button. (Will change to dB indication.)
Release the button when the desired scan level indication
(30,40 or 50 dB) is displayed.
(When the scan level is set, it will return to frequency display.)
Press the "FM" or "AM" button.
Bef ore p resetting the broadcasting
stations, press the band selector to
the appropriate position for you
locality. (Refer to pag e 7 .)
Power: "on" ( l*r.
Memory indicator
O While the memory indicator is illuminated,
press the button of the desired channel.
o To preset channels 1 through 8:
4\ Press the button momentarily, ?r-rd then
t/45 ::l",ffi"1';:',T.' :f, :l:L l;$;; : ;
. To preset channels 9 through 16:
Press the button slightly longer, and then
release (Preset channel number is
displayed on the channel display.)
When the button is pressed, the memory i nd rcato r
illumination will stop, and the presetting is complete.
Note:
1. lf the memory indication illumination stops before you press
the button, once again repeat step (5) and then step (6).
2. lt a new broadcasting station is preset into a channel, the
broadcasting station which was previously entered in that
chan nel will be automatically erased.
Press momentarily, and then
release.
(The memory indicator will
illuminate for approximately
4 seconds.)
%
Note:
lf the button is pressed continuously,
the frequency will begin to change,
and the memory will be preset
automatically.
ln order to stop the memory
presetting, once again press either
the "up" button or the "down" button.
O Enter the name (call sign, etc.) of the preset broad-
casting station on the station memory file sheet (page
1 1).
This completes the procedures for presetting radio broad-
cast frequencies. The other preset-tuning buttons can be
preset in the same way by following steps (2) th roug h (7\ .
I
[oPress the appropriate tuning button to tune to the
. Auto tuning Press the button. When the
frequency indication begins to change, I f\J t
release the button (a broadcasting station [r$
will be selected automatically). Repeat this L
operation until the desired station is found.
Press the bution ,omentarrly and tune to fih
[: ff:' :",1 ;T*"Ji #; Ji,"# :,';LYJ:. l/AE
desired broadcast.
. Manual tuning
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LISTENING TO RADIO
BROADCASTS
lmportant!
[r:=fl *
AM loop antenna
This antenna must be installed
to receive AM broadcasts.
O Turn the amplifier on, and prepare it for listening to radio
b roadcasts.
O Adiustment to FM broadcast signa
strength is possible lor automatic
tuning.
Press and hold the button.
(Will change to dB indication.)
Release the button when the desired
scan level indication (30,40 or 50 dB)
is d isplayed
(When the scan level is set,
to frequency display.)
Power: "on" ( f +.r, )
qg Station selection by using the tuning buttons:
O Press either
O Press the left button to change the frequency
downward, and press the rig ht button to
change the frequency upward.
o Auto tun ing
. Manual tuning
Press the button When the
f requency indication begins to
change, release the button (a
broadcasting station will be
selected automatical ly)
Repeat this operation until the
desired station is found
Press the button momentarily
(the frequency will change
each time the button is
pressed) and tune to the
desired station
*
,$
GED Station selection by using preset tuning buttons:
o To select the front channels (CH 1-8):
Freq uency stored in the
memory and channel number
are d isplayed
Press
momentarily.
%
To select the back channels (CH 9-16):
Press slightly
longer. Frequency stored in the
memory and channel number
are d isplayed
AM lEll kH!
CH
a
10 -
will return
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Statlon memory lile sheet
cn. rr T Cn. iz I cH. 13 T *, 1t l Ci- rs
Button
Button
Station
I Operation after station selection:
lf interlerence and noise are excessive in an FM stereo
broadcast:
Press the FM mode selector.
Note that this will result in monaural reception, but the
noise will be red u ced
To switch back to stereo reception, press the button once
again
Press to checking FM signal strength.
When recording an FM broadcast, the signalstrength should
be at least 50 dB in order to make a recording which is clear
and noise-free.
tf this button is pressed again, the broadcast f requency is
d isplayed again.
Notes:
1)When checking the signal strength, set so that the
"normal" FM lF-band indicator is illuminated.
lf the "super narrow" indicator is illuminated, slight errors
might occur in the indication of weak signals.
2) The display may f licker if the signal of the broadcast being
received is extremely weak.
o For AM broadcagts
Move the antenna toward the right or left
to f ind the point of best reception.
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www.hifiengine.com

TROUBLESHOOTING GUIDE
Before 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 eliminate
the problem and restore proper operation.
lf you are in doubt about some of the check points, or if the
remedies indicated in the chart do not solve the problem, refer to
the directory of Authorized Servicenters (enclosed with this unit)
to locate a convenient servicenter, or consult your Technics
dealer for instructions.
Problem Probable cause(s) Suggested remedy
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An unusual hissing
noise is heard when
listening to the broad-
cast in stereo, but not
heard when listening
monau rally.
A slight noise may be heard because the
method used for modulation of FM stereo
broadcasts is different than that used for
monau ral broadcasts.
oTry reducing the treble sound by using the trebre
control of the amplifier.
oSet the FM mode selector to the "mono" position.
(Note that the broadcast will then be heard as
mon aural sou nd )
oTry changing the location, height an d/or direction of
the antenna.
o lf an interior anten na is being used, chan ge to an
exterior anten na.
oTry using an antenna with more elements.
Noise is excessive in
both stereo and
monaural broadcasts.
Poor location an dlor direction of the antenna.
Transmitting station is too tar away.
The FM stereo indicator
on guartz lock indicator
llickers, without com-
pletely illuminating.
Poor location an dlor direction of the antenna. oTry changing the location, height and/or direction of
the antenna.
o lf an interior antenna is being used, change to an
exterior anten na.
oTry using an antenna with more elements.
Transmitting station is too far away
Excessive distortion in
the sound ol stereo
broadcasts.
Nearby building or mountain.
IM u lti-path distortion is being caused by the
mutual interference of broadcast signals re-
ceived directly from the transmitting station
(direct waves) and signals being reflected f rom
nearby buildings or mountains (reflected
waves).l
Station selection can not
be made by using the
preset-tuning buttons.
The preset-tu n ing buttons have not been
p reset. o Make the presettrngs
The charge of the gold capacitor which main-
tains the "back-up" memory is exhausted. o Set the power switch to the "on" position f or
30 mrnutes or rnore to perform the charging, and
then make the memory presetting again.
The "most-recent"
memory will not be
reset.
The charge of the gold capacitor which main-
tains the "back-up" memory is exhausted. oSet the power swrtch to the "on" position for 30 minutes or more to perform the charging, and then
make the memory presetting again.
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An unusual "beat'
sound is heard. Unit is being used at the same time as the
television set. oTurn off the television set, or use this unit farther
away f rom it
A low-pitched "hum"
sound is heard when the
broadcast is tuned.
The antenna connection wires are too close to
the power cord. o Place the anten na connection wires and the power
cord f arth er apart
The power supply frequency from the power
cord is modu lated and heard f rom the speakers. oTry reversing the con nection of the power cord plug.
o lnstall a special exterior antenna.
A strange hissing noise
is produced continu-
ously or intermittently.
Caused by the "discharge phenomenon" and
the "oscillation phenomenon" of electric
appliances (such as f luorescent lights, TV,
small series-type motors, rectification equip-
ment, etc.).
oTry placing this unit farther away from such
equipment.
o lnstall noise-prevention equipment on this unit or
on the electric appliance.
Station selection cannot
be made by using the
preset-tuning buttons.
The preset-tuning buttons have not been
p reset. o Make the presettings.
The charge of the gold capacitor which main-
tains the "back-up" memory is exhausted. o Set the power switch to the "on" position f or 30
minutes or more to perform the charging, and then
make the memory presetting again.
Panasonic Company
Division of Matsushita Electric
Corporation ol America
One Panasonic Way Secaucus,
New Jersey 07094
Printed in Japan
Matsushita Electric of Canada
Limited
5770 Ambler Drive, Mississauga,
Ontario L4W 2T3
Panasonic Hawaii, lnc.
91-238 Kauhi St., Ewa Beach
P.O. Box 774
Honolu lu Hawaii 96808-077 4
@@
Panasonic Sales Compshy,
Division ol Matsushita Electric
of Puerto Rico, lnc.
Ave. 65 De lnfanteria, KM 9.7
Victoria lndustrial Park
Carolina, Puerto Rico 00630
sQx530 53- 1
s0484N 1 054
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