Technics SA-180 Owners Manual courtesy of

Technics
QuARTZ Synthesizer AM/FM Stereo Receiver
SA-183
UARTZ Synthesizer LW/MW/FM Stereo Receiver
A-180L
OPERATING INSTRUCTIONS
o Cabinet colour differs according to area.
Notes:
® Specifications differ according to the area code.
e The “EK” area code, for example, indicates United Kingdom specifications.
® The “EK” indication is shown on the packing case and serial number tag.
Before operating this unit, please read these instructions completely.
Dear Seneo Fi
Lear Ilereo Fan
We want to thank you for selecting this product and from this new addition to your home.
to welcome you to the growing family of satisfied Please read these operating instructions carefully,
Technics product owners around the world. and be sure to keep them handy for convenient
We feel certain you will get maximum enjoyment reference.
These Operating Instructions a els SA-180 and SA-180
Is are indicated in the Operating I
Contents
eAccessories i... 2 e Standard Operating Procedures .......... 10
e For United Kingdom .................... 2 eOperation .............................. 11
eSuggestions for Safety .................. 3 e Technical Specifications ................ 13
eConnections ............................ 4 eMaintenance ................................... 13
e Front Panel Controls and Functions ....... 6 eTroubleshooting Guide .................. 14
eMemory Presettings .................... 8
ACCESSONES vire
Note: Configuration of AC power supply cord and FM indoor antenna differs according to area.
For United Kingdom...
The “EK” indication is shown on the name plate. As the colours of the wires in the mains lead of this unit may not
important correspond with the coloured markings identifying the terminals
THE WIRES IN THIS MAINS LEAD ARE COLOURED IN in your plug, proceed as follows. The wire which is coloured
ACCORDANCE WITH THE FOLLOWING CODE. BLUE must be connected to the terminal which is marked with
BLUE: NEUTRAL the letter N or coloured BLACK.
BROWN: LIVE The wire which is coloured BROWN must be connected to the
terminal which is marked with the letter L or coloured RED.
Suggestions for Safety
EN Use a standard electrical AC wall outlet
1. Use from an AC power source of high voltage, such as
for air conditioners, is very dangerous.
Be extremely careful not to make a connection to the
electrical outlet for a large air conditioner or central-heating
unit which uses high voltage, because there is the possibility
of fire.
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.
E Connection and removal of the power cord
plug
1. 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.
EM 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 parts are acci
E For families with children
Never permit children to put anything, especially metal, inside
this unit. A serious electric shock or malfunction could occur if
articies such as coins, needies, screwdrivers, etc. are inserted
through the ventilation holes, etc. of this unit.
E Turn off after use
It the unit is lett for a long time with the power on, this will not only
shorten its useful operation life, but may also cause other
unexpected trouble.
E If 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.
EM Place the unit where it will be well ventilated,
and away from direct sunlight
Place this unit at least 10 cm (47) away from wall surfaces, etc.
and away from direct suniight. Be careful that curtains and
similar materials do not obstruct the ventilation holes.
E Keep the unit away from heaters, etc.
Heat can damage the external surfaces as well as internal
circuits and components.
EN Avoid spray-type insecticides
Insecticides might cause cracks or ‘cloudiness’ in the cabinet
and plastic parts of this unit. The gas used in such sprays might,
moreover, be ignited suddenly.
E Never use alcohol or paint thinner
These and similar chemicals should never be used, because
they may damage the finish.
E 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.
Connections
(Necessary in mountainous regions,
inside reinforced-concrete buildings,
‚For United Kingdom;
only:
Use the attachment
plug (included).
75-0hm coaxial cable
(option)
“The indication AM used here includes both MW and
LW for model SA- 180L.
e Attach to a wall {using tack or tape)
/ facing in direction of best reception.
e Tacks should not contact internal
1 antenna wire.
e For best reception sound quality, an FM
outdoor antenna is recommended.
e Disconnect this antenna if an FM out-
door antenna is installed.
Tack or tape
\ This unit
If this antenna is not properly installed,
AM broadcasts will not be received.
Be sure to connect the AM loop antenna
even when an outdoor antenna is used.
Vinyl covered
wire (option)
я ‚| +. (Necessary in mountainous regions, in-
512m side reinforced-concrete buildings, etc.)
(16—40ft.)| Use 5 — 12 m {16 — 40 ît.) of vinyl-
covered wire horizontally at the window.
1. Pay attention to the following points when attaching the
antenna.
eDo not attach it horizontally (to do so would impair
reception).
eDo not attach it close to metal surfaces (to do so would
result in noise).
-— When attaching the antenna to a wall, — — — —
column or rack.
Find the height and direction of the antenna where
reception is best and then fix it vertically to the wall, rack,
etc.
AM loop
antenna (included)
Column
AM antenna
holder (A)
(included)
Rear panel
of the rack
AM antenna
holder (A) (included)
Nu A
eDo not attach it close to power cords, speaker wires, etc. (to
do so would result in noise).
eDo not attach it close to a tape deck (when the tape deck is
being used, chirping or beeping sounds may be received).
2. Connect the AM loop antenna to the AM antenna terminais
located on the rear panel of the unit.
—~ When attaching the antenna to the unit
This type of installation may cause impaired reception or
result in signal noise. If possible, attach the antenna to the
rack, a wall, or a column. |
Move the antenna toward the right or left to find the point of
best reception.
Rear panel
те
= 7 tthe unit
oF
AM loop antenna
(included)
AM antenna holder (B)
(included)
Connect a compact disc player (digital audio disc), or a second Connect a tape deck or a graphic equalizer, etc.
tape deck (playback only).
Compact disc player (option Tape deck (option
Stereo connection cables
option
This unit
Stereo connection
cable (option AN и AC power
Speaker supply cord
connection (included
cords
| (option
4
Household
AC outlet
The configuration of
the AC outlet and AC
B Connection of speaker wires power supply cord
(1) Strip off the outer differs according to
covering, and twist — / — area.
the center conductor. fy Note:
15mm | To prevent damage
(19/327) | to circuitry, never
— a short-circuit plus
+) and minus (— ;
@ Turn completely to speaker terminais.
the left.
M Load impedance:
MAIN or REMOTE 8-160
MAIN and REMOTE 8—16N |
(D insert wire and turn
compietely to the right.
Pull wire to be sure it
won't come out.
Remote speaker terminals ( “REMOTE”
or connection to a second pair of speakers.
Front Panel Controls and Functions
Input selectors (input selector)
These selectors are used to select the sound
source to be heard, such as a disc, radio
broadcast, etc. 1
Tape-monitor selector (tape monitor)
source (a — A):
Set to this position to listen to a phono disc
or radio broadcast, or to listen to equipment
connected to the auxiliary-input terminals
(“CD/AUX").
tape/ext (A —a):
Set to this position to playback or monitor
the sound from a tape deck, or to use a
graphic equalizer, etc., connected to the
+ Power switch (power) “TAPE/EXT” terminals. |
Volume control
(volume)
* Balance control (balance)
* Tone controls (bass/treble)
The bass control is for the low-
frequency sound range, and the
treble controlis for the high-
frequency sound range.
* Speaker selectors (speakers)
These selectors are used to turn the
speaker systems on and off.
Note:
When only one system of speakers is
connected, no sound will be heard if
both selectors are pressed.
Headphones jack (phones)
Loudness switch (loudness)
Set to the “on” position when listening to
music at low volume. Auditory perception of
sound in the low frequency range falls off at
low volume, but when the switch is in this
position, this deficiency is compensated for,
so that the full impact of the musical perform-
ance can be enjoyed.
The indication AM used here includes both MW and
© LW for model SA-180L. |
FM stereo indicator e— «Memory indicator (memo)
(stereo)
This indicator automatically
This indicator illuminates when the memory button is pressed.
illuminates when an FM + Digital frequency (frequency)
stereo broadcast is being
received.
Note:
ltwili not iiluminate if the FM
mode selector is in the
monaural mode.
Quartz-lock indicator
(quartz lock) ’
This indicator illuminates
when a radio broadcast is
received correctly.
The reception frequency of the FM or AM broadcast selected by using the tuning buttons
or the preset tuning buttons is indicated by a digital-type display.
+ Channel display
The channel number selected by the preset-tuning buttons is displayed.
» Signal-strength indicators (signal strength)
These indicators show the relative strength of broadcast signals being
received by the antenna. The best condition for reception, for -M and AM, is
when the indicators illuminate completely to the top.
+ Preset-tuning buttons (1 — 16)
(16ch random 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 frequencies.
FM mode selector
(FM 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 stereo in-
dicator will not illuminate in the
monaural mode.
Band selectors.
(band selector)
FM:
Press this button to listen to an FM broadcast.
AM:
Press this button to listen to an AM broadcast.
allocation:
When the AM button is pressed for about 4
seconds, the AM frequency step will change to
10 kHz per step.
(This step 15 set to 9 kHz before shipment.)
Set to the appropriate position for your locality.
In order to return to the original frequency
indication, press this button again.
Memory button (memory)
This button is used when preset memory setting of the preset-tuning
buttons is made.
* Tuning buttons (tuning)
Press the left button to change the frequency downward, and press the right button
to change the frequency upward.
| MW
a ES Po allocation | u freq. shift
and selectors (band selector)
FM: Press this button to listen to an FM broadcast.
MW: Press this button to listen to an MW broadcast.
allocation:
When the MW button is pressed for about 4 seconds, the MW frequency step will
change to 10 kHz per step. (This step is set to 9 kHz before shipment.)
Set to the appropriate position for your locality.
In order to return to the original frequency indication, press this button again.
LW: Press this button to listen to an LW broadcast.
freq shift:
When the LW button is pressed for about 4 seconds during reception of an LW
broadcast, the LW frequency will decrease by about 2 kHz.
So, for example, to receive 153 kHz, tune to 155 kHz, and then press this button.
In order to return to the original frequency indication, press this button again.
— 7 —
Memory Presettings
с ‘he indication AM used here includes both
“MW and LW for model SA-180L.
Have you completed the “Standard Operating | Notes:
Procedures’ (page 10)? 1. For automatic presetting in areas where there are less than
| tant! 16 FM stations, the remaining channels (through channel 16)
mportant! | |
| this antenna is not installed. wit be left empty. The opty channels can be filled by using
LX AM broadcasts will not be > Mar гу preseiting. |
7 received . It a new broadcasting station is preset into a channel, the
AM loop antenna broadcasting station which was previously entered in that
| | | channe! will be automatically erased. Then reset the memory.
With this unit you may preset as many as 16 radio broadcast 3. For AM broadcasts with extremely strong signal transmis-
stations: FM/AM random presetting. After broadcast stations sions, the frequency memorized may be slightly off of the
have been preset as described below, any desired station can be correct frequency. If this occurs, use the manual control to
quickly and easily selected by simply touching one button. Memorize.
The FM broadcasting stations and AM broadcasting stations will be automatically preset to *‘channels’ 1 through 16 for FM
and 9 through 16 for AM, respectively.
The FM broadcasting stations, MW broadcasting stations, and LW broadcast
ing stations will be automatically presetin
“channels” 1 through 16 for FM, 9 through 16 for MW, and 13 through 16 for LW, respectively.
Note: When AM is automatically preset, the FM stations on “channels” 9 through 16 will be replaced by the new AM stations.
Press the “FM” or “AM” button.
Press the “FM”, “MW” or “LW” button.
Note: Before presetting the broadcasting stations, press to select the
appropriate frequency step for your locality. (Refer to page 7.)
2
Memory indicator Channel! display
bed Select seins -- ta CRETE EURE
| “tuner” ( 1— =)
3 Set to the lowest frequency. Press. When the
; ' frequency indica-
eFM: 87.50 MHz (0.05 MHz step) on begins to
e AM: 522 kHz (9 kHz step) or change, release.
530 kHz (10 kHz step) [3
eFM: 87.50 MHz (0.05 MHz step)
eMW: 522 kHz (9 kHz step) or
The frequency will
change upward, and the
530 kHz (10 kHz step) automatic presetting will
oLW: 155 kHz (9 kHz step) or begin with the next
153 kHz (9 kHz step: —2 kHz shift) broadcasting station.
@ Press the button and hold slightly Lx It will continue to preset
(frequency will change SS the following consecu-
continuously). tive broadcast stations.
3) Release it when approaching the A
above exact frequency, and then i
press the button again momentarily %
(frequency change will stop). Cy
@ Press the button momentarily
(frequency will change each time the
4
button is pressed), and tune to one СС
of the above frequencies.
Confirm the names (call
signs, etc.) of the broadcast-
ing stations which are preset
to each channel, and enter
them on the file sheet.
(Refer to page 11.)
¢ To check the front channels (CH 1— 8):
Press F requency stored in the
momentarily. memory and channel
N number are displayed:
eTO check the back channels (CH 9— 16):
siereo Г] Г | mi
J
FM {I LINA I Lf wey en Ll
Press slightly Frequency stored in the
longer. memory and channel
number are displayed.
B “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 turned off, and automatically tunes to that station the
next time the power is turned on.
Ш ‘Back-up’ memory
This is the function which preserves the preset memory and
most-recent memory functions. In the event of a power failure,
orifthe power cordof this unitis disconnected from the electric
outlet, the back-up memory will preserve the preset memory
and most-recent memory functions for as long as approxi-
mately one week.
B To prevent erasing the memory
If the power supply is interrupted for one week or longer, the
memory settings will be erased.
For example:
1) H the power cord is disconnected from the electric outlet,
2) Han audio timer is used and the timer does not operate the
tuner for a week or longer,
3) If a power failure occurs, etc.
It any of the above occurs, the memory will have to be reset.
The memory in this unit is maintained by a gold capacitor. If 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. Then reprogram the
memory.
Stations can be freely preset to any desired channel.
TORES ANA NS
Memory indicator
Press the “FM” or “AM” button.
DL. Press the FM”, “MW” or “LW” button.
Note: Before presetting the broadcasting stations, press to select the
appropriate frequency step for your locality. (Refer to раде 7.)
Channel display
1“tuner’( 1— =)
Press the appropriate tun-
ing button to tune to the
desired broadcast.
e Automatic tuning
Press the button. When the frequen-
cy indication begins to change, re-
lease the button (a broadcasting
station will be selected automatically).
until the desired station
is found.
* Manual tuning
Press the button momentarily and
The frequency will т}
change each time the Ñ
button is pressed.
6 Enter the name (call sign, etc.) of the preset
broadcasting station on the station mem-
ory file sheet (page 11).
This completes the procedures for presetting radio broad-
cast frequencies. The other preset-tuning buttons can be
presetin the same way by following steps 2 through 6.
Press momentarily,
and then release.
(The memory indicator will
illuminate for about 4 seconds.)
Repeat this operation Note:
If the button is pressed con-
tinuously, the frequency will
begin to change, and the
memory will be preset auto-
tune to the desired station. ‘matically.
To stop the automatic mem-
ory presetting, once again
press either the “up” button
or the “down” button.
While the memory indicator is
illuminated, press the button
of the desired channel.
¢ To preset channels 1 through 8:
Press the button momen- %
tarily, and then release. 0
(Preset channel number is
displayed on the channel
display.)
® То preset channels 9 through 16:
Press the button slightly 1x
longer, and then release. N x
Note:
If the memory indication illumination
stops before you press the button, once
again repeat step 4 and then step 5.
Standard Operating Procedures
“0 — 1”
3 “on” ( в- =)
Select speaker systems to be used.
When only one system of speakers is connected, no sound
will be heard if both selectors are pressed.
* Set to “on” position
when listening at low
volume level.
* Adjust the volume level.
* Adjust the left/right volume balance.
While listening to an AM broadcast or a monaural FM
broadcast, balance the sound so that it seems to be heard
from the center, between the speakers.
¢ Adjust tone quality as desired.
Low-range sound is adjusted with the bass control (“bass”), and
high-range sound with the treble control (“treble”).
If sound from speakers is not The protection circuitry may have operated if either of the
wanted, set the speaker selec- following conditions is noticed:
tors to the “off” position. e No sound is heard when the power is turned on.
Note: e Sound stops during a performance.
Set volume control to minimum The function of this circuitry is to prevent circuitry damage if, for
(“0”) position before connecting example, the positive and negative speaker connection wires are
Headphones (option) headphones. “shorted”, or if speaker systems with an impedance less than
the indicated rated impedance of this unit are used.
If this occurs, follow the procedure outlined below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again.
Note:
When the protection circuitry functions, the unit will not operate
Be sure to reduce the volume level, and switch OFF the power. uniess the power is first turned off and then on again.
— 10 —
Operation
Have you completed the “Standard Operating Procedures” (page 10) and “Memory Presettings” (page 8)?
FM mode selector
If the broadcast signal is weak, or if there is a large amount of
interference in a stereo broadcast, set to the “mono” position.
Note that the FM stereo indicator will not illuminate in this
position,
FM stereo indicator
1 “tuner” (1— =)
D- Station selection by
—2 using the tuning buttons:
1. Press either “FM”. “MW or “LW”. |
2. Selecta broadcast station.
e Automatic tuning
Press the button. When the frequency
indication begins to change, release the
button (a broadcasting station will be
selected automatically). Repeat this
operation until the desired station is
found.
e Manual tuning
Press the button momentarily and tune
TU to the desired station. The frequency
will change each time the button is
pressed.
Station Memory 1 File Sheet
2-1
Station selection by using
preset-tuning buttons:
*To select the front channels (CH 1-8):
Press
momentarily.
Frequency stored in
the memory and chan-
nel number are dis-
played.
e To select the back channels (CH 9—t6):
Press slightly
longer
Frequency stored in
the memory and chan-
nel number are dis-
played.
AM
e Putton | CH.
Station OE
CH.8
FM
AM
(MW/LW)
Button!
Station ==
FM
AM
(MW/LW)
— 11 —
Operation connues
Have you completed the “Standard Operating Procedures” (page 10)?
“tape/ext” ( E— =
barat wetecior
Follow your tape deck’s Adjust the volume level and
operating instructions. the desired tone quality.
(Refer to page 10.)
Select the sound source.
* To listen to phono discs
eo To listen to equipment connected to the
auxiliary (“CD/AUX”’) input terminals
BACT
Follow the instructions accompanying Adjust the volume level and
your equipment for set-up and opera- the desired tone quality.
tion of the selected sound source. (Refer to page 10.)
Select the sound source
“source” ( = > в for recording.
pt al nod
Begin the sound source (disc, tape, etc.). Begin recording.
(Refer to pages 10 — 12.) By using the controls on the tape deck, adjust the recording level.
Then begin recording. (Follow your tape deck’s operating instructions.)
By using two tape decks, Edit-Recording can be performed. E Operation
E Connection e According to step 1 of “Tape recording” above, select
Connect a playback tape deck to the “CD/AUX" terminal on “CD/aux', and playback, using a playback tape deck
the rear panel of this unit. (Refer to page 5.) according to step 3.
eBegin recording according to step 4 above.
_— 12 —
Technical Specifications wm as so
E AMPLIFIER SECTION
1 kHz continuous power output
both channels driven
Total harmonic distortion
half power at 1 kHz
Intermodulation distortion
rated power at 60 Hz: 7 kHz=4:1, SMPTE, 80
Power bandwidth
both channels driven, —3 dB
2 X 35W (80)
0.07% (80)
0.5%
10 Hz—40 kHz (80)
Damping factor 20 (80)
Input sensitivity and impedance
PHONO 2.5 mV/47kQ
CD/AUX, TAPE/EXT 150 mV/22kQ
PHONO maximum input voltage (1 kHz, RMS) 150 mV
S/N
rated power (80)
PHONO
CD/AUX, TAPE/EXT
Frequency response
PHONO
70 dB (IHF, A: 72 dB)
88 dB (IHF, A: 95 dB)
RIAA standard curve
+0.8 dB (30 Hz~15 kHz)
CD/AUX, TAPE/EXT 10 Hz~70 kHz (—3 dB)
Tone controls
BASS 50 Hz, +10 dB~—10 dB
TREBLE 20 kHz, +10 dB~—10 dB
Loudness control (volume at —30 dB) 50 Hz, +9 dB
Output voitage
REC OUT 150 mV
Channel balance, 250 Hz—6,300 Hz +1 dB
Channel separation, 1 kHz 55 dB
Headphones output level and impedance 390 mV/330Q
Load impedance
MAIN or REMOTE 852—160
MAIN and REMOTE 80-160
E FM TUNER SECTION
Frequency range 87.50-— 108.00 MHz
Sensitivity
S/N 30 dB 1.5 4V (750)
S/N 26 dB 1.3 AV (750)
S/N 20 dB 1.2 UV (750)
IHF usable sensitivity 1.5 UV (IHF '58, 7500)
IHF 46 dB stereo quieting sensitivity 22 uV/75Q
Total harmonic distortion
MONO 0.15%
STEREO 0.3%
S/N
MONO 60 dB (75 dB, IHF)
STEREO 58 dB (71 dB, IHF)
Frequency response
Alternate channel selectivity
20 Hz—15 kHz, +1 dB——2 dB
+400 kHz, 65 dB
Capture ratio 1.0dB
Image rejection at 98 MHz 40 dB
IF rejection at 98 MHz 70 dB
Spurious response rejection at 98 MHz 70 dB
AM suppression 50 dB
Maintenance
To clean, use a soft, dry cloth.
If the surfaces are extremely dirty, use a soft cloth, dipped into a
soap-and-water soiution or a weak detergent solution.
Wring the cloth well before wiping the unit.
— 13 —
Stereo separation
1 kHz 40 dB
10 kHz 30 dB
Carrier leak
19 kHz —30 dB (—35 dB, IHF)
38 kHz —45 dB (—50 dB, IHF)
Channel balance (250 Hz—6,300 Hz) +1.5 dB
Limiting point 1.2 ну
Bandwidth
IF amplitier 180 kHz
FM demodulator 1000 kHz
Antenna terminals 75Q (unbalanced)
B AM TUNER SECTION (SA-180)
Frequency range 522-1611 kHz (9 kHz-step)
530-1620 kHz (10 kHz-step)
Sensitivity (S/N 20 dB) 20 UV, 330 4V/m
Selectivity 55 de
Image rejection at 999 kHz 40 dB
IF rejection at 999 kHz 55 dB
B AM TUNER SECTION (SA-180L)
Frequency range
MW 522~1611 kHz (9 kHz-step)
530~1620 kHz (10 kHz-step)
LW 155—353 kHz (153~351 kHz, —2 kHz shift)
Sensitivity (S/N 20 dB)
MW 20 uV, 330 uV/m
LW 45 uN
Selectivity
MW (at 999 kHz) 55 dB
LW (at 254 kHz) 55 dB
Image rejection
MW (at 999 kHz) 40 dB
LW (at 254 kHz) 40 dB
IF rejection
MW (at 999 kHz) 55 dB
LW (at 254 kHz) 40 dB
H GENERAL
Power consumption 200W
Power supply
For United Kingdom
For continental Europe
Dimensions (WXHXD)
AC 50 Hz/60 Hz, 240V
AC 50 Hz/60 Hz, 220V
430 X 97 X 243 mm
(16-15/16" X 3-13/16” X 9-9/16")
Weight 4.5 kg (9.9 Ib.)
Note:
Specifications are subject to change without notice. Weight and
dimensions shown are approximate.
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 finish of your unit.
Troubleshooting Guide
Before requesting service for this unit, check the chart below for a possible cause ofthe problem you are experiencing. Some simple checks
or a minor adjustment on your part may eliminate the problem and restore proper operation.
Ifyou 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 service center (enclosed with this unit) to locate a convenient service center, or consult your Technics dealer for instructions.
Probable cause(s) - Suggested remedy
If the equipment is unstable because it is located
upon a soft surface, such as a carpet, place a
solid material (such as concrete blocks, bricks, a
hard board, etc.) beneath the speaker systems.
e Try moving the turntable farther away from the
speaker systems.
® Try placing a cushioning material (such as felt or
commercially available audio insulators) beneath
the turntable.
The location of the. urntable and speaker -
systems; is unstable |
e Turn the treble tone control to reduce the treble
“Dustin-disc grooves. .... оно) сео] ® Useadisc cleaner to remove the dust from the
a DAA E SEN E disc grooves.
Stylus needle is worn. e |f the noise is heard even when a new disc is
E | played, probably the stylus is worn. Replace it
E. | | I with a new stylus.
Dust is attached to stylus tip. | a e Remove the dust by using a soft brush.
SINE
A slight noise may be heard because the | ® Try reducing the treble sound by turning the
method used for modulation of FM stereo | treble tone control
broadcasts is different than that used for | ®Setthe FM mode selector to the mono position.
monaural broadcasts ~~. A (Note that the broadcast will then be heard as
IE | | E ~ 1 monaural sound.)
“Poor location and/or. direction of the. antenna. „| ® Try changing the location, height and/or
Transmitting station is. too far away Se ooo... direction of the antenna.
e |f an indoor antenna 1s being used, change to an
outdoor antenna.
Try using an antenna with more elements.
Poor location and/or direction of the antenna. …j e Try changing the location, height and/or
Transmitting station. is too far away. ~~. direction of the antenna.
| | e Han indoor antenna is being used, change to an
EDO TL Te a | | Outdoor antenna.
Broadcast Signals. are e being disturbed. | e Try using an antenna with more elements.
Nearby automobile traffic or airplanes.
Nearby building or mountain.
{Multi-path 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 c or r mountains (reflected
-waves).) .— | О
Such noise is called ignition’ noise, and occurs | ® Relocate the antenna and the connection wires
while the automobile engine is running. | leading to it to a place farther away from where
De mie | automobiles pass.
Caused YT the "discharge phenomenon” and | ® Try placing this unit farther away from such
the “oscillation phenomenon” of electric ~~ | equipment.
appliances (such as fiuorescent lights, TY, | e instali noise-prevention equipment on this unit or
small series-type motors, rectification | on the electric appliance.
equipment, etc.).
The preset-tuning buttons of this unit have not e Make the presettings.
‘been preset. с | но
The charge of the gold capacitor Which main- «| e Set the power switch to the “on” position for 30
tains the “Баск- up” "memory is exhausted. 4 minutes or more to perform the charging, and
© 71 then make the memory presetting again.
—14 —
Probable cause(s)
Suggested remedy
Unit is being used atthes same time as the
television set 70
e Turn off television set, or use this unit farther
away from it.
. Interference from adjacent broadcast signal.
® By using the treble tone control,
try reducing the treble sound.
The AM Toop antenna connection wires are e too. |
close to the power cord.
® Place the antenna connection wires and the
power cord farther apart.
The power supply frequency from thé power -
cord is modulated and heard from the о
speakers.
e Try reversing the connection of the power cord
plug.
e install a special outdoor antenna.
‘Caused by the “discharge phenomenon" and
the “oscillation phenomenon” of electric
appliances (such as fluorescent lights, TY,
smail series-type motors, rectification
equipment, etc.).
e Try placing this unit farther away from such
equipment.
® install noise-prevention equipment on this unit or
on the electric appliance.
The preset- tuning buttons of this unit have not
been preset.’ ERE
* Make the presettings.
The charge of the gold capacitor which main-
tains the back-up” memory is exhausted.
® Set the power switch to the “on” position for 30
minutes or more to perform the charging, and
then make the memory presetiing again.
The AM loop antenna is not con nected, or the | |
connection is not tight at the antenna terminal.
e Connect it correctly.
The: power cord plug! is not ot completely’ a.
inserted. Нм
eo Confirm that the power cord plug is connected
completely.
Connections are incomplete or incorrect to the
speaker systems, etc.
® Check to be sure that all connection wires are
correctly connected.
The incorrect + input selector has been pressed :
e Check to be sure that the correct selector is
pressed.
The tape- monitor selector is incorrectiy set o”
the “tape/ext” position.
e Except for tape playback, set the tape-monitor
selector to the “source” position.
| The speaker selectors are incorrectly set to the -
| “off” position.
The positive (+) and negative (—) connections НЕ
of the speaker connection wires are reversed.
e Set to the “on” position.
® Reconnect the speaker connection wires so that
the positive and negative connections are
correct.
The oft and Tight connections of The speaker
connection wires: are reversed. |
® Check the speaker connection wires and connect
them correctly if necessary.
The leftand r
tion wires connected: to other equipment a are.
reversed. an |
ight connections of the connec- Ноля
® Check the connection wires to other equipment
and connect them correctly if necessary.
The power ‘corde or a fluorescent ight. etc,
near the connection wires. о
| Su “® Try separating this unit from the electric
appliance as far as possible.
* Reverse the connection of the power cord piug.
The connection Toi the ground wire is incorrect
or incomp ete.
e Check to be sure that the grounding connection
is correct.
® [f the unit is not grounded, try doing so.
The speaker connection wires are
disconnected.
e Check and correct the connections of the
speaker connection wires.
The balance control | is not set to the center MD
position.
e Set the mark on the balance control to the center
position.
The protection. circuitry has functioned
because the positive and negative speaker
connection wires are “shorted” or speaker
systems with an impedance less than the
indicated rated impedance of this unit are used.
e Switch off the power, and, after determining and
correcting the cause, turn on the power once
again.
— 15 —
Matsushita Electric Trading Co., Ltd. OO
P.O. Box 288, Central Osaka Japan
Printed in Singapore SQX54437
Imprimé au Singapour H0587C0

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