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Technics
SU-VS
Stereo lntegrated DC Amplifier
OPERATI NG I NSTRUCTI ONS
e
Also available in black.
area.
r Configuration of ventilation holes differs according to
Before operating this unit, please read these instructions completely.
9"oo
9t*"*
%ot,
lmportant
THE WIRES IN THIS MAINS LEAD ARE COLOURED IN AC. CORDANCE WITH THE FOLLOWING CODE. BLUE: NEUTRAL
BROWN: LIVE
We want to thank you for selecting this product and
to welcome you to the growing family of satisfied Technics product owners around the world. We feel certain you will get maximum enjoyment from this new addition to your home. Please read these operating instructions carefully, and be sure to keep them handy for convenient reference.
As the colours of the wires in the mains lead of this unit may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows. The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK. The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured
RED,
o
o
BEFORE USING THIS UNIT. oFOR UNITED KINGDOM
FOR AUSTRALIA
2
oMAINTENANCE OF EXTERNAL SURFACES rFOR SAFE USE OF THIS UNIT oFRONT PANEL CONTROLS AND THEIR FUNCTIONS oTAPE RECORDING AND
TAPE-TQ-TAPE RECORDTNG ..
. .
.....
2 2 2 3
For your safety
6
7 7
.TECHNTCAL SPECIFICATIONS oPROTECTION C|RCU|TRY... .
o
TROUBLESHOOTING GUIDE
8
To ensure safe operation the three-pin plug supplied must be inserted only into a standard three-pin power point which is effectively earthed through the normal household wiring. Extension cords used with the unit must be three-core and be correctly wired to provide connection to earth. Wrongly wired extension cords are a major cause of fatalities. The fact that the unit operates satisfactorily does not imply that the power point rs earthed and that the installation is completely safe. For your safety, if in any doubt about the effective earthing of the power point, consult a qualified
electrician.
( ) screwdriver to set the voltage selector (on the bottom panel) to the voltage setting for the area in which the unit will be used. Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries; the correct voltage is already set.)
Use a minus
To clean, use a soft dry cloth.
lf ihe surfaces are extremely d irty, use a soft cloth, dipped into a soap and water solution or a weak detergent solution. Wring the cloth well before wiping the unit. Wipe once again with a soft dry cloth. Never use alcohol, paint thinner, or benzine, nor a chemically treated cloth to clean this unit. Such chemicals may damage the finish of your unit.
a
I
1.
Use a standard electrical AC wall outlet
Use lrom an AC power source
I
as
lf water is spilled on the unit
ol high voltage, such
lor
air conditioners, is very dangerous. Be extremely caref ul 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
f
Be extremely careful if water is spilled on the unit, because a fire or serious electric shock might occur. lmmediately disconnect the power cord plug, and consult with your dealer.
H
ire.
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.
I
Place the unil where it will be well ventilated, and away from direct sunlight
Place this unit at least 10 cm (4") away f rom wall surfaces, etc.,
and away from direct sunlight. Be careful that curtains and
similar materials do not obstruct the ventilation holes.
I
1.
Connection and removal of the power cord plug
Wet hands are dangerous. A dangerous electric shock may result if the plug is touched by wet hands. Don't pull the power cord. Always grasp the plug; never pull the cord itself
2.
I
Keep the unit away from stoves, etc.
Heat can damage the external surfaces as well as internal circuits and components.
I
x
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 accidently touched.
#W
I
Avoid spray-type insecticides
lnsecticides 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.
I
For lamilies with children
x
I
These and similar chemicals should never be used, because they may damage the finish.
Never permit children to put anything, especially metal, inside this unit. A serious electric shock or malfunction could occur if articles such as coins, needles, screwdrivers, etc. are inserted through the ventilation holes, etc. of this unit.
x
I
Turn olf alter use
x 66@
lf trouble occurs
Never use alcohol or paint thinner
lf 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
unexpected trouble.
I
lf, 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.
3-
Power switch
Peak-power indicators
Speaker selector
Recording-mode selector
lnput selector
Phono cartridge selector Volume control
Balance control Loudness switch
High-cut lilter switch Subsonic filter switch Operation selector Tone controls lndicator-range selector
Headphones iack
ohms, the actual output value should be read as 1/2 ol the indicated value. Actual ^+',dl
lO Power switch (power)
Note: Be sure to turn the volume control @ to tne minimum ("0") position before turning on the power.
output: ^, 'i^' 'l
indicatedvalueXBQ
speaker impedance (Q)
G) Speafer selector (speakers)
@ Peak-power indicators (FL peak power meter)
These indicators indicate the peak power value of the output level from the speaker systems. Those marked "left" are for indication of the left channel, and those marked "right" are for the right channel. When the indicator-range selector Q) is set to the "x0.01" position, note that the displayed value should be read as 1/100 of the indicated value. Note: lf speaker systems with an impedance of 8 ohms are con-
nected, the indicated value can be directly read as it without modification. lf, however, the impedance is
is, 16
speakers ofl: No sound will be heard from the speakers. main: Sound can be heard from the speaker systems connected to the "MAlN" terminals. remote: Sound can be heard from the speaker systems connected to the "REMOTE" terminals. main and remote: Sound can be heard simultaneously from the speaker systems connected to the "MAlN" terminals and the "REMOTE" terminals.
-4-
()
Recording-mode seleclor (rec selector) This selector is used to select the signal to be recorded
by the connected tape deck. tape dubbing 2 )1:
.
@ Balance control (balance) While listening to an AM broadcast or a monaural
FM
Set to this position to tape record from tape deck
1
broadcast, balance the sound so that it seems to be heard from the center, between the speakers.
2
to tape deck '1 tape dubbing 1 )2: Set to this position to tape record from tape deck
deck 2.
oll:.
@ Loudness switch (loudness)
to tape
oll (
on (
r-l):
Set the switch to this position when listening at high volume.
I*r
):
Set to this position if a tape recording is not to be made.
Set the switch to this position when listening to music at low
H
Note: At this position, signals for recording are not emitted from the recording output terminals ("REC OUT").
phono: Set to this position to tape record from phono discs. tuner: Set to this position to tape record from radio broadcasts.
aux:
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 performance can be enjoyed.
@ nigh-cut lilter switch (high lilter)
oll ( r*1):
Set to this position for ordinary use. 7 kHz ( t=r ): Set to this position to eliminate high-frequency noise such as tape "hiss" noise, a scratched disc, etc.
Set to this position to tape record the signals from equipment connected to the auxiliary input ("AUX") terminals.
Notes:
1)Refer
to page 6 for detailed information concerning
tape-to-tape record ing. 2)Tape deck 1 is the tape deck connected to the tape deck 1 terminals ("TAPE 1").
@ Subsonic lilter switch (subsonic filter)
olf ( r*t):
Set to this position for ordinary use. 30 Hz ( l-*r ): Set to this position to eliminate ultra-low-frequency noise such as motor "rumble" and unusual vibration of the woofer cone caused by a warped disc, etc.
@ lnput selector (input selector)
tape 2: Set to this position to playback or monitor the sound from tape deck 2. tape 1: Set to this position to playback or monitor the sound from tape deck 1.
phono: Set to this position to listen to phono discs.
@ Operation selector (operation)
tuner:
Set to this position to listen to radio broadcasts. aux: Set to this position to use equipment connected to the auxiliary input terminals ("AUX"). Notes: 1) Refer to page 6 for detailed information concerning tape monitoring. !f ape deck 1 is the tape deck connected to the tape deck terminals ("TAPE 1").
.1
-
()
ptrono cartridge selector (phono selector)
This selctor should be set to the position which corresponds to the type of cartridge used on the turntable. One of the indicators above this selector will illuminate to indicate which cartridge is being used. MM ( r*r):
This selector is used in order to obtain the maximum performance capability of the DC main amplifier section of this unit, driving the speaker systems with the best frequency response of high-level input signals. straight DC ( r-*I ): When the selector is set to this position, the high-level input signals received at the "TUNER" and "AUX" terminals are directly amplified at the main amplifier section, without passing through the tone-control circuitry, and the unit operates as a complete direct-coupled amplifier to drive the speaker system. Note that the tone controls (! have no effect when the selector is set to this position. via tone ( f *r ): When the selector is set to this position, inout signals pass
through the tone-control circuitry on their way to the
main amplifier section. Set the selector to this position to use the tone controls@.
Set to this position when using a moving-magnet type cartridge or high-output moving-coil cartridge (1 mV or
more).
@ tone controls (bass/treble)
range.
MC (
Set to this position when using a moving-coil type cartridge. Notes:
I=r
):
The bass control is for the low-frequency sound range, and the treble control is for the high-frequency sound
1)The speakers may be damaged
if
(with this selector
@ lndicator-range selector (meler range) Xl ( r*r
10w. X0.01 (
incorrectly set to the "MM" position for use with a moving-
This selector is used for changing the sensitivity of the
peak-power ind icators.
):
coil cartridge) the setting is changed to the correct
("MC") position while the disc is playing. Before changing the setting, be sure to first reduce the volume control @ setting to minimum in order to avoid speaker damage by high input. 2) Be sure to turn off the power switch Q) before changing the phono cartridge.
The output of this unit is indicated by the indicators. For example, when the output is 10W, the indicators show The output of this unit increased by 100 times is shown by the indicators. For reading the actual value, reduce the indication shown by the indicators to 1/.100.
l-r
):
@ volume control (volume)
This control is used to adjust the volume.
Note: Be absolutely sure to set this control to its minimum ("0") position when turning the power on. After the power switch is turned on, please wait several seconds before increasing the volume level.
(D Headphones jack (phones)
Note: Be sure to set the volume control @ to its minimum ("0") position before connecting headphones.
- 5-
Refer to pages 4 to 5 for names of all controls.
I
Tape recording
panel is always at a constant level, unaffected by the settings of
The level of the disc or radio broadcast signal (as selected by
the recording-mode selector(4)) emitted f rom the "TAPE 1" and "TAPE 2" recording output terminals ("REC OUT") on the rear
other controls and switches.
$'rrT& ).
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il
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],.':lil.:,::.:. '.l'ttattt.''.'..', ..ia -
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. ., ' il .;. "
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ffi-
Select the sound source for recording
O ""n'n
the disc play or tune to the radio broadcast.
Operation ol tape deck By using controls on the tape deck, make the adiustment ol the recording level. Then begin recording.
I
Tape-to-tape recording
To record lrom tape deck 1 to 2 (or lrom 2 to 1) lf two tape decks are connected to this unit, recording can be made from one deck to the other.
:*---'
"tape dubbing
1)2" or
"tape dubbing
2)1"
@
Make the adjustment
a.gin the tape deck
1 (or tape deck 2)
for playback
of the recording level by
using
the controls on tape deck 2 (or tape deck 1). Then begin
the tape{o-tape recording.
I
Tape monitoring (three-head type tape deck
onlY)
lf the tape deck being used is the 3-head type, the input selector @ can be used for tape monitoring (checking the recording as it is being made). For recording lf the input selector G) is set to the same position as the recording-mode selector ({), such as, for example, the "tuner" position for a radio broadcast, the sound before recording can be heard, and, when it is set to the "tape" position, the sound just recorded can be heard. For lape-to-tape recording When recording from tape deck 1 to tape deck 2, the sound immediately prior to recording can be heard by setting the input
selector @to the "tape 1" position, and the just-recorded sound can be heard by setting it to the "Iape 2" position. When recording from tape deck 2 to tape deck 1, the settings are the opposite.
I
To listen to discs during recording or tape-totape recording
Because this unit includes the recording-mode selectorQ), which can be used for independent selection of the recording signal, you can listen to discs, for example, while at the same time recording lrom the radio or some other sound source. Use the input selector (5) to select the sound source (such as "phono") to be heard, and use the recording-mode selector @to select the recording signal.
-6-
(DrN 45 s00)
I
AMPLIFIER SECTION
Output voltage and impedance
2 x 60W (4O) 2 x 60W (84)
2 x 60W (44) 2 x 60W (8O)
20 Hz-20 kHz continuous power output both channels driven 40 Hz-16 kHz continuous power output both channels driven 1 kHz continuous power output both channels driven
2 x 65W (4O) 2 r 65W (BO)
0.03% (4o) 0.005% (8o) 0.030/o (4Q) 0.0050/o (8O) 0.0070/o (4O) 0.0030/o (8O)
0.0070/o (8f))
0.0030/o (8Q) 0.050/o (4Q)
REC OUT REC/PLAY Channel balance, AUX 250 Hz-6,300 Hz Channel separation, AUX 1 kHz Headphones output level and impedance Load impedance MAIN or REMOTE MAIN and REMOTE
150 mV
30 mV/82kQ +1.0 dB 55 dB 520 mV/330O
Tolal harmonic distortion rated power al 20 Hz-20 kHz
rated power at 40 Hz-16 kHz rated power at 1 kHz
4r)-16r) 8r)-16r)
I
GENERAL
hall power at 20 Hz-20 kHz
hall power at 1 kHz -26 dB power at 1 kHz 50 mW power at 1 kHz lntermodulation distortion rated power at 250 Hz: 8 kHz:4:1, 4O rated power at 60 Hz: 7 kHz:4:1, SMPTE,
Power bandwidth both channels
Power consumption 515W Power supply AC 50 Hzl60 Hz, 110V/120V/220V/Z4OV Dimensions (WxHxD) 430 x 97 x 3.10 mm (16-15/16" x.3-13/16" r 12-7/32") Weight 7.8 kg
(17.2 tb.)
0.08% (4o) 0.03%
O.007o/o
Note:
Total harmonic distortion is measured by the digital spectrum
8r)
analyzer (H.P. 3045 system).
driven,
3 dB 5 Hz-40 kHz (4O THD 0.030/o)
5 Hz-35 kHz (8Q THD
0.020lo)
Residual hum and noise 0.5 mV Damping lactor 20 (4O),40 (8O) lnput sensitivity and impedance PHONO MM 2.5 mV/47kQ MC 17O pV/220Q TUNER, AUX 150 mV/22k4 TAPE 1 REC/PLAY 180 mV/27kQ TAPE 2 150 mV/22kQ PHONO maximum input voltage (1 kHz, RMS)
MM MC 150 mV .10 mV
s/N
rated power (4Q) PHONO MM MC TUNER, AUX
79 dB (lHF, A: 86dB) 67 dB (lHF, A: 6BdB) 89 dB (lHF, A: 100 dB)
-26 dB power (4Q)
PHONO MM
MC
TUNER, AUX 50 mW power (4Q) PHONO MM
MC
70 dB 63 dB 70 dB 67 dB 63 dB 68 dB RIAA standard curve
TUNER, AUX Frequency response PHONO TUNER, AUX, TAPE
+0.5 dB (30 Hz-15 kHz) 2 Hz-120 kHz (-3 dB) +0 dB (20 Hz-20 kHz) -0.2 dB (20 Hz-2o kYz)
50 Hz, *10
2O
The protection circuitry may have operated if either of the following conditions are noticed: . No sound is heard when the power is turned on. . Sound stops during a performance. The f unction of this circuitry is to prevent circuitry damage if , for example, the positive and negative speaker connection wires
are "shorted", or if speaker systems with an impedance less than
Tone controls
BASS TREBLE Subsonic filter High-cut lilter
Loudness control (volume at -30
dB-
10 dB
k{z, +10 dB- -10 dB
30 Hz, -6 dB/oct. 7 kHz, -6 dBloct. 50 Hz, *9 dB
the indicated rated impedance of this unit are used. lf 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
dB)
unless the power is first turned off and then on again.
-7n!.
a possible cause of the problem you are experiencing
Before requesting service for this unit, check the chart below f or
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 Servjcenters (enclosed with this unit) to locate a convenient servicenter, or consult your Technics dealer for instructions.
Probtern
A loud and unusual sound ("howling") is heard when lhe volume level is increased.
.Probabli,eausets)
The location of the turntable and speaker
systems is unstable.
suggested'l,emedy
.
.lf
Set the subsonic f ilter switch @ to the "30 Hz" position
a (t
tt
ID
o
Unusual scralching noises are heard.
Disc is old or scratched. Dust in disc grooves Stylus needle ts worn.
Et
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. rClose the cover of the turntable. oTry moving the turntable farther away f rom the speaker systems. r Try placing a cushioning material (such as felt or commercially available audio insulators) beneath the turntable. oTurn the treble tone control C9 to reduce the treble sound. o Use a disc cleaner to remove the dust f rom the disc
c
o
The sound lacks clarilY and volume. The highJrequencY range cannot be clearly heard. An unusual hissing
noise is heard when listening to the broadcast in stereo, but not heard when listening monaurally. Noise is excessive in both stereo and monaural broadcasts.
tt
s)
.lf
o o
o
rooves.
the noise is heard even when a new disc is played,
probably the stylus is worn. Replace it with a new
styl us.
Dust is attached to stylus tiP. The phono cartridge selector @) is incorrectly set to the "MM" position when a movingcoil type cartridge is being used. The phono cartridge selector (3) is incorrectly set to the "MC" position when a movingmagnet type cartridge is being used.
A slight noise may be heard because the method used for modulation of FM stereo broadcasts is different than that used for monaural broadcasts.
Remove the dust by using a soft brush. Set the phono cartridge selector (Q to the "MC" position.
.Set the phono cartridge selector (Q to tne "VV"
position.
rTry reducing the treble sound by turning the treble
control ($.
o
Poor location and/or direction of the antenna Transmitting station is too lar away Poor location and/or d irection of the antenna Transmitting station is too far away.
Try changing the location, height and/or direction of the antenna. o lf an interior antenna is being used, change to an exterior antenna. rTry using an antenna with more elements.
o t, o o
6
The FM stereo indicator of the tuner llickers, wilhout comPletelY
i
.Try changing the location, height and/ordirection oj
the antenna.
o
lluminalino.
lt
E
I|.
Sound is distorted and/ or lhe volume level becomes low. Excessive noise in stereo broadcasts; somelimes no sound is emitted. Excessive dislortion in the sound ol stereo broadcasts.
Broadcast signals are being disturbed Nearby automobile traff ic or airplanes Poor location and/or direction of the antenna Transmitting station is too far away
lf an interior antenna is being used, change to an exterior antenna. .Try using an antenna with more elements.
6
n
ia
.9
{,t
g
=
Nearby building or mountaln. IMulti-path distortion is being caused by the mutual interference of broadcast signals received directly f rom the transmitting station (direct waves) and signals being rellected f rom nearby buildings or mountains (rellected
l
An unusual "PoPPing" noise is heard when
ignition noise, and occurs while the automobile engine is running
Caused by the "discharge phenomenon" and the "oscillation phenomenon" of electric appliances (such as f luorescent lights, TV, small series-type motors, rectif ication equipment, etc.).
waves).1 SLrcfr noise is called
. Relocate the antenna and the connection wires
leading to it to a place farther away f rom where auto-
automobiles Pass. A strange hissing noise is produced continuously or inlermiltenllY.
mobiles pass. oTry placing this unit farther away f rom such
equipment.
. lnstall noise-prevention equipment
the electric appliance.
on this unit or on
-8-
Piobiem
.{, ....tE
.o
An unusual "beat" sound is heard.
Pi6:ba.b;lei.'eau'sei(s) Unit is being used at the same tlme as the
television set. lnterference from adjacent broadcast signal.
The antenna connection wires are too close to
].,'gqgggslEdi].rc
r
H
y:.'r,,
't-.,-o ''.tig
ott o9
A low-pitched "hum"
sound is heard when the broadcasl is tuned. A strange hissing noise
g{
''{t
:
:69
is produced continuously or inlermittently.
.3'',..'
No sound is heard when the power is turned on.
the power cord. The power supply frequency from the power cord is modulated and heard f rom the speakers. Caused by the "discharge phenomenon" and the "oscillation phenomenon" of electric appliances (such as fluorescent lights, TV, small series-type motors, rectification equipment, etc.). The power cord plug is not completely inserted
oTurn off the television set, or use this unit farther awav from it. o By using the treble tone control @ , try reducing the treble sound. o Place the antenna connection wires and the power cord farther apart. o Try reversing the connection of the pow6r cord pG o lnstall a special exterior antenna. eTry placing this unit farther away f rom such
eq
uipment.
.lnstall noise-prevention equipment on this unit or
on the electric appliance.
rConfirm that the power cord plug is connected
completely.
The power supply f use has failed
Connections are incomplete or incorrect to the speaker systems, etc. The setting of the input selector @ has not been completely or correctly made. The speaker selector (g) is incorrectly set to the "speakers off" position.
When listening to stereo
r Request the store where this unit was purchased, or
a Service Center, to replace the iuse. .Check to be sure that all connection wires are
correctly connected. oCheck to be sure that the selector is set to the correct position. rSet to the "main", "remote" or "main and remote',
q.
sound, lhe sound ol the various musical instruments is not heard lrom its correct
The positive (+) and negative ( ) connections of the speaker connection wires are reversed.
. Reconnect the speaker connection wires
so that the positrve and negative connections are correct.
ql
position.
When listening to stereo sound, the left and right sounds are reversed.
c
tt o
:Q'
o
tr
A low-pitched noise ("hum" or "buzz") is
heard.
The left and right connections of the speaker connection wires are reversed. The lett and right connections of the connection wires connected to other equipment are
reve rsed.
oCheck the speaker connection wires and connect them correctly if necessary. . Check the connection wires to other equipment and connect them correctly if necessary. oTry separating this unit f rom the electric appliance
as far as possible.
.!!)
The power cord or a fluorescent light, etc., is near the connection wires.
e ct
,q.
g
0
I he connection ot the ground wire is incorrect
or incomplete.
Sound is not heard lrom the speaker system on one side. The speaker connection wires are disconnected. The balance control (g is not set to the center position. The strength of the broadcast signal is not the same as the output from the turntable.
r Reverse the connection of the power cord pluq. oCheck to be sure that the grounding connection
correct
o
is
lf the unit is not grounded, try doing so. oCheck and correct the connections of the speaker connection wires. .Set the mark on the balance control to the center
position.
The volume level lor a radio broadcast is dilferenl from that lor disc play.
While listening, sound is
.Adjust the volume level by using the volume control
o
suddenly no longer
heard.
A DC component is mixed with the input. (The protection circuitry of the amplif ier has
fu ncti oned.
)
rCheck the connections to other equipment
(especially the speaker connection terminals, the speaker circuitry protection f use, etc.), and, if still no sound is heard, request service from the store where the unit was purchased or from your local Service Center.
(lndication lamps ol other equipment are still illuminated.)
-9I
SChgmatiC Diagfam... MOdgl SU-VS
(rhisschemaricdiasrammaybemodiriedatany
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Printed in Japan
SQX493
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Matsushita Electric Trading Go., Ltd' P.O. Box 288, Central Osaka JaPan
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Printed in Japan
s0481C1051