Sansui-AU-70-Service-Manual
oir HAY,
gan Ÿ
Dr ME a
La 4
vag "e 7
cr HR
Ч cui
ar MEE Ae
Teal ir "
il HEY Md
|
а
iE
Г
Fr
L al но 4 ая ji
A UE pau EA ui fi A
т A va Me (LS
I
| = alae li
=
ie „TE
Ч а ` i i ! По ra visir, hs aR. M."
ig au kr
mes
E al A
= nes” в; 6
i
EF
de
¡pa
‘ét y
{ él WT |
SANSUI
stereophonic
PRE MAIN
AMPLIFIER
model AU-/0
This amplifier has a maximum output of 50
watts (25W-25W) and features an amazingly
low distortion factor of not more than 0.15%
at 20 W. A high-quality amplifier with many
exciting features, it 15 delivered to you with
Sansul's fullest confidence. Read this In-
struction manual carefully before vou use the
amplifier for the first time.
FEATURES
La
7189 P.P. produces 40W without distortion (Max. 0.95% at 30 cps and
0.15% at 1,000 cps) |
The 7189 power tubes operate in class AB,P.P. (fixed bias} for high-fidelity reproduction.
Their combined maximum output is limited to 50 W. The amplifier incorporates a multi-
plex feedback circuit (total negative feedback: 26 db) for the first time in this class of ampli-
fiers in Japan. This makes it extremely low m distortion over the whole frequency range.
Total harmonic distortion at | kc 15 0.15%. At 30 cps, a very low frequency at which it
is extremely difficult to minimize harmonic distortion, the distortion is limited to not more
than 0.95%. This кв quite a feat for a 50-watt amplifier. Another remarkable feature is
the damping factor of 18, a figure which is lower than that of triode power tubes coupled
in P.P. This 1s why bass sounds come out with such clarity.
NFB used in all amplifier circuits, from preamp to power amplifier
The low distortion of the power amplifier is meaningless if the preamp generates distor-
tions. Your AU-70 amplifier uses a three-stage amplifier circuit in its intermediate or co-
control amplifier—unlike conventional one-stage control amplifiers—and has all its circuits
in a single negative-feedback loop. These make your AU-70 amplifier free from noise and
distortion.
Super-precision transistor preamplifier eliminates hum and noise
The exclusive Sansui four-transistor preamplifier, which features a transistor circuit factor
of 4—as compared with conventional 5-10-—and a transistor noise factor of 2 db—as com-
pared with conventional 5 db, eliminates hum and noise, the enemy of high-fidelity repro-
duction. The amplifier has a much better S/N ratio and a gain three times larger than
vacuum-tube amplifiers.
Fach channel can be operated independently. Equipped with tone
defeat).
Each channel has independent tone controls for bass and treble. This makes fine adjust-
ment possible. Moreover, each channel 1s equipped with tone defeat which cancels the
tone control circuit. You can easily obtain a flat frequency response without causing any
undulation in response or reduced gain in bass and treble as in the case of conventional
mechanical control by means of a tone volume knob. Therefore, you can get an accurate,
perfectly flat response from your AU-70 amplifier just by flipping a switch.
Blend circuit permits continuous shift from monaural to stereo
As you turn the “BLEND” switch clockwise, your AU-70 amplifier gradually shifts from
monaural to stereophonic reproduction. This feature enables you to get full stereophonic
effect by compensating program sources which give a particularly strong effect of the concert
hall.
Easy-to-read three-range output level meters
Each output level meter can be switched over to any of the three scales of 5, 10 and 25 watts.
The meters not only give direct readings of both channels, but also indicate any lack of bal-
ance between the right and left outputs. These prove very useful in balancing the outputs.
Three-dimensional performance possible with the center-channel output
terminal
Your AU-70 amplifier has an output terminal for the center-channel amplifier. Connect
it to vour monaural amplifier—we recommend Sansui Q-15—to produce a three-dimensional
effect.
Equipped with advanced, high-performance accessory circuits
Your AU-70 amplifier is equipped with various advanced accessory circuits such as loudness
control, low and high filters, tape monitor, tone defeat, presence, blend, speaker switch and
headphone jack.
SPECIFICATIONS Vacuum Tubes, Transistors and Diodes: 7189 x4, 6ANS
x2, 12AX7x3, OA-9] germanium diode x 2,
2SB-381 transistor x4, SD-IB silicon diode x 2
and TC. (0. 2) Pl 1/3 selenium rectifier x 1
Total: 9 tubes and 9 diodes
Main Amplifier:
Maximum Output: 25 W-25 W—50W total
Harmonic Distortion: Max. 0.15% at 20W for 1 ke
Max. 0.95% at 20W for 30 cps
Intermodulation: Max. 0.85% at 20 W, 50 cps +5.5ke
Frequency Response: +1 db, 10-80,000 cps
Output Impedance: 8 and 16 ohms
Preamplifier:
Gain
Phono MAG 84 db (Output 20 Wat 1.1-mV input)
X-TAL 54 db (Output 20 W at 36mV input)
TAPE 86 db (Output 20 W at 0.9-mV input)
MIC 86 db (Output 20 W at 0.9-mV input)
AUX (TAPE MON) 51 db (Output 20 W at 50-mV
input)
TUNER 51 db (Output 20 W at 50-mV
input)
5/N ratio 52 db (at TAPE terminal)
Residual noise: Less than 0.25 uW
Capacitor-resistor Tone Control:
50 cps +11 to -15 db
10 kefs+12 to -13 db
Negative-feedback Equalizer: TAPE: NARTB
PHONO: RIAA
Accessory Circuits:
Presence Control: Turnover at 150 cps
Low Filter: 50 cps—12.5 db
High Filter: 10 kc—13.5 db
Loudness Control
Tone Defeat
Tape Monitor
Headphone Jack
Tape Recorder Playback Connection
Terminal for Center-Channel Amplifier
Level Meter (for output) Three ranges of 5, 10 and 25W
Blend Control
Power consumption: 118 VA
Size: Width 405 mm, Depth 320 mm, Height
142 mm
Weight: 13.7 kg
Power supply: 100, 117 and 240 Y, AC 50-60
cps
FREQUENCY
HARMONIC DISTORTION
INTERMODULATION DISTORTION
TONE CONTROL
LOW AND HIGH FILTERS
INPUT AND OUTPUT
1.
2.
3.
4.
5.
6.
CARTRIDGE SWITCH
SET THIS TO MAG OR X-TAL DEPENDING ON YOUR PLAYER CARTRIDGE
(MAGNETIC OR CRYSTAL)
E SC a ss риа ОН
999009°
)0 000060.
ld АЦУ REC
RECORD PLAYER
HOW TO PLAY RECORDS
e Record Player Connection
|. Connect the output terminal to the “PHONO-
R” and “PHONOQO-L” terminals (in the case
of monaural reproduction, to either of these
terminalsjon the back of your amplifier with
shield wires.
2. Set the cartridge switch on the back of your
amplifier to “MAG” or “X-TAL” according
to the type of your cartridge.
3. Connect the power-cord plug receptacle of
the player to the power plug on the back of
your amplifier.
@ Operation
|. Set the “SELECTOR” switch at “PHONO”.
2. Set the “MODE” switch at “STEREO” or
“STEREO-REV” (а: К ог L in case of
monaural operation).
3. Switch on the player, put on the record and
adjust the number of revolutions as necessary
before placing the pickup on the record.
4. Balance the sounds from both speakers by
means of the “BALANCE” knob while watch-
ing the output level meters.
5. Adjust the amount of sound by means of
the “VOLUME” knob. Other adjusting
knobs and switches can be used to get the
most satisfactory reproduction.
THIS 1S USED TO SELECT THE MOST SUITABLE METER SENSITIVITY FROM
THE THREE RANGES OF 5, 10 AND 25 WATTS, THE VARIABLE SENSITIVITY
IS INTENDED TO MAKE IT EASIER TO WATCH NEEDLE MOVEMENT.
HiGH UP TO 5 WATTS
MEDIUM
. UP TO 10 WATTS
LOW: UP TO 25 WATTS (MAXIMUM OUTPUT)
CHOOSE THE APPROPRIATE RANGE ACCORDING TO VOLUME
When you play a monaural record on a stereo
record player, follow the same procedure as
for stereo records. This will give you better
results.
Cartridges are either magnetic or crystal.
Both can be used with the AU-70, but, if
possible, use the magnetic type for the highest
fidelity. If you feel that right and left are
reversed when playing a stereo record, turn
e “MODE” switch to “STEREG-REV”.
To balance the sounds from both speakers,
play a monaural record in the same way as
a stereo record and adjust the “BALANCE”
switch in such a way that you feel that the
sound comes from a point midway between
the right and left speakers. In this case,
you can count on the output level meters for
a rough determination of the balance. Also,
make sure that the “BLEND” knob is kept
at the point where 1t cannot be turned clock-
wise any further.
When you supply power to the player from
the power-plug receptacle on the back of
your amplifier, do not forget that the player
is switched off when you switch off the
amplifier.
SPEAKERS
@Stereophonic Reproduction
Connect (+) of the nght-hand speaker to the
8- or 16-ohm terminal of the upper R terminals
on the back of the amplifier. Connect (—) of
the right-hand speaker to (C) of the upper R
terminals. Connect (+) of the left-hand speaker
to the 8- or 16-ohm terminal of the lower L
terminals on the back of the amplifier. Connect
(—) of the left-hand speaker to (C) of the lower
I. terminals.
® Monaural Reproduction
When you use an 8-ohm speaker system for mon-
aural reproduction, connect the upper and lower
16-ohm speaker terminals of your amplifier to
the (+) terminal of the speaker.
Connect the upper and lower (C) speaker termi-
nals of your amplifier to the (—) terminal of the
speaker.
Three-dimensional Stereophonic Reproduction
® Your Sansui amplifier is equipped with a terminal
for a center-channel amplifier so that it can be
used for three-dimensional reproduction.
To do this, connect the input terminal of a
monaural amplifier (Either a main or combina-
tion amplifier can be used. Among our own
products, the ©-15 main amplifier is the most
suitable.) to the pin jack of the center-channel
output terminal at the left of the speaker terminal
board with a shieldwire. The center channel
mixes the right and left sounds to produce the
three-dimensional effect. Speakers suitable for the
AU-70 are 20 to 30-cm coaxial speakers and,
for the best musical reproduction, two- or three-
way speaker systems which use different speakers
for different frequency ranges.
In choosing the cabinet, take account of tonal
quality in addition to design.
If you find that the sounds from both speakers
do not mix well, but leave a sort of vacuum
midway between the speakers, you can conclude
that the amplifier and the speakers do not match
in polarity (phase). In such a case, reverse the
(+) and (—) connections of either speaker.
When you use two pairs of speakers for stereo-
phonic reproduction, make sure that the speaker
output terminal connections do not cause contact
between R and L and that the terminals are
connected properly. If the connections are faulty,
your amplifier will not work normally and may
also go out of order.
FR e x X x X
ооо, 0000000
peer CCC CR CE x e. Ve ни vy
AAA TT eles ns es nen hn bes
PH Wr R MX О |
= \
o a N |
O 416966.
на
:
ñ
@ Е Pl он I ce
Л. % ELO @) i В SEDE
e!
AM /FM /MPX TUNER (SANSUI TU-70)
HOW TO RECEIVE BROADCASTS
You can listen to broadcasts easily by connecting
your amplifier to a tuner and MPX adaptor.
e Connection
A. Stereo tuner
Connect tuner output to the R and L
“TUNER” terminals on the back of your
amplifier.
B. Monaural tuner
Connect tuner output to either R or L of
the “TUNER” terminals on the back of
your amplifier.
C. FM monaural tuner and FM-MPX adaptor,
Connect monaural tuner ouptut to the input
terminal of the FM-MPX adaptor and con-
nect R and L of the adaptor output terminals
to R and L, respectively, of the “AUX”
terminals on the back of your amplifier.
® Operation
In the case of A and B above:
1. ‘Set the “SELECTOR” switch at “TUNER”.
2. Set the “MODE” switch at “STEREO” oy
“STEREO-REV” in the case of A and at R
FM TUNER (SANSUI FM-8) MPX ADAPTOR (SANSUI MP-2)
or L (according to the channel selected) in
the case of B.
3. Tune in with the tuner.
4. Use other adjusting knobs and switches to get
the most satisfactory performance.
In the case of C
|. Set the “SELECTOR” switch at “AUX”.
2. Set the “MODE” switch at “STEREO” or
“STEREO-REV”.
3. Tune in with the tuner.
4. Prepare the FM-MPX adaptor for stereo-
phonic reception.
5. Use other adjusting knobs and switches to
get the most satisfactory performance.
When you use a tuner or FM-MPX receiver,
read the instructions for them carefully. There
should be no mistakes in connections and opera-
tion.
When you use our TU-70, follow the instructions
for A, When you use FM-8 and MP-2, follow the
instructions for C.
POWER SUPPLY
D- TO PLAYER AND
TUNER
¡THESE TWO PLUG
RECEPTACLES CANNOT
BE USED FOR OVER
150 YA 1
TO A=G LINE
INSERT iN A PLUG
RECEPTACLE IN YOUR HOME)
JVAURAL AMPLIFIER
ANSUI POWER AMPLIFIER
5)
¡ne
HOW TO USE 4 MICROPHONE
You can use a microphone with your AU-70
amplifier. Any high-impedance (50-kilo-ohm)
crystal, dynamic or velocity microphone is ac-
ceptable.
® Connection
Connect the microphone to R or L of the
“MIC” terminals on the back of your amplifier.
When you use two microphones, connect one to
R and the other to L.
@ Operation
1. Set the “SELECTOR” switch at “MIC”,
2. Set the “MODE” switeh at “STEREO”
(when you use only one microphone
for stereophonic effect)
at R (when you use only one microphone
for monaural reproduction),
or at L+R (when you mix two different
program sources from two
microphones.)
3. During stereophonic operation, you can use
the “BLEND” knob for mixing purposes.
SPEAKERS, 16 OHMS EACH
Other adjusting knobs and switches can be
used for the most satisfactory reproduction.
Remember that your AU-70 amplifier accepts
only high-impedance microphones. You
cannot get the best performance if you use too
long a microphone cord, which causes various
problems and reduces treble.
Your amplifier has separate tone controls
for right and left speakers. You will find
this feature very useful when you use one
microphone for music and another for voice.
Furthermore, it gives added versatility to
your amplifier, particularly when you record
on tape what 1s picked up by microphones.
POWER INDICATOR 4
This lights up when power 1s being used. It re-
mains on while the amplifier is in operation.
HEADPHONE JACK a
="
When you want to avoid disturbing others or when
you use the amplifier as a monitor, connect the head-
phones to this jack. You can still enjoy stereophonic
reproduction through these headphones. For this
purpose, you can use any type of headphones or
earphones if its plug fits into the jack. But use
dynamic headphones designed for stereophonic re-
production, if possible.
Sansui FRERE Nik ARIE dep i
SPEAKER (SPEAKER OFF) ==
When vou use headphones with the headphone
Jack, set this switch to “OFF” to cut off sound to the
speakers. This feature enables you to enjoy stereo-
phonic reproduction without disturbing others.
PRESENCE + =
If the Tone Control alone is used for bass compensa-
tion, slightly higher frequencies are compensated at
the same time. To avoid this, turn this switch “ON”.
This sets the turnover at 150 cps, changing speaker
damping and frequency response characteristics to
compensate bass. As a result, all sounds become
impressive and you can enjoy clear, magnificent
bass.
POWER -= ——
This switch 1s used for connecting and disconnecting
the power supply. Push the button for power.
Push it again to shut it off. The switch also activates
and deactivates the power-supply plug receptacle on
the back of the amplifier.
BALANCE + o
This knob is used to adjust the balance of volume
between the right and left speakers for the best stereo-
phonic effect. Make the adjustment while watching
the output leve! meters and listening to the sounds of
both speakers. When the amplifier is adjusted
properly, you feel as if the sound comes from a point
midway between the two speakers.
BLEND J
This knob permits continuous shift from stereophonic
to monaural reproduction. Turn it counterclock-
wise to bring reproduction closer to monaural
(R—L). For complete monaural reproduction, turn
1t as far counterclockwise as possible.
The sounds of the right and left speakers become
separated when you turn the knob clockwise {R and
L perform their respective functions). The best
stereophonic effect is obtained when you turn it
as far as possible.
BASS and TREBLE for R and L 4————
These control the tone of the right and left speakers.
Use in the same way for both Speakers.
VOLUME = im pm
This knob 1s used to control the volume of the tuner,
records and tapes. Turn it clockwise for louder
reproduction. To reduce the volume, turn counter-
clockwise.
LOUDNESS +
When sound volume 1s at a low level, you feel as if
bass and treble are missing. In such a case, turn
this switch “ON” to compensate bass and treble.
This will make you feel as if you were present at an
actual concert.
OUTPUT LEVEL METERS | на
The right and left meters indicate thé oùtatie levels
of the right and left speakers, respectively.
Since output is shown separately for each channel,
the meters make for easy balance adjustment.
Besides, you can watch changes in the output of each
channel during operation. Each meter can be set
to any of the three ranges of 5, 10 and 25 watts by
means of the output-level meter switch on the back
of the amplifier. Choose the appropriate range
according to the output you want. When the mode
switch 1s set at R (or L), the meter for L (or R) does
not work.
SELECTOR (INPUT -SELECTOR3
TUNER: For receiving broadcasts through the
tuner.
PHONO: For playing records.
MIC: For using a microphone
TAPE HEAD: For playing tapes on the tape
deck (directly from the tape head).
AUX: For reproducing voice input or using the
MPX adaptor.
> LOW FILTER (for eliminating low-frequency noise)
Turn this switch “ON” to reduce phonomotor and
other unpleasant low-frequency noises.
HIGH FILTER (for eliminating high-frequency
noise)
Turn this switch “ON” to reduce relatively high-
frequency noise, such as the scratch from records
made of poor material or noise due to fluorescent
lamps in the case of the tuner.
TAPE MONITOR
When you make recordings with a three-head tape
recorder, turn this switch “ON” to use the amplifier
as a monitor. ‘Then the sounds recorded on the
tape will be reproduced while vou are recording.
Keep this switch “ON” when you play the tape on
the tape recorder.
Be sure to keep the switch “OFF” otherwise.
LL» TONE DEFEAT
Turn this switch “ON” to open the tone control
circuit. Then the frequency response curve of the
amplifier will become perfectly flat.
MODE (Stereophonic/monaural switch)
This switch is used to shift from stereophonic to
monaural reproduction or vice versa.
STEREO: Set the switch at this position
for stereophonic reproduction.
Signals fed into A come out of
A's speaker and those fed into
B come out of B's speaker.
STEREO-REV: This position, too, 1s for stereo-
phonic reproduction. But
signals fed into À come out of
B’s speaker and those fed into
B come out of A’s speaker.
Choose this position when the
right and left are reversed in
reproduction.
L+R: Signals fed into L and R are
blended into one (L-+KR) in
the amplifier before they come
out separately from L and R.
Signals fed into A and B
become À + B in the amplifier
and come out of the speakers
of À and B in the form of the
combined sound A+B
R (Monaural К): Signals fed into A come out of
A's and B's speakers. Use this
position for reproducing mon-
aural broadcasts and tapes.
L (Monaural L): Signals fed into B come out of
As and B's speakers.
This position is rarely used.
Фе
S800 000080 8 ...
| SS ие ee
C
MICROPHONE
TAPE DECK
HOW TO RECORD AND PLAY
Your AU-70 amplifier can be used with a tape
recorder for recording and playback and can also
If you use a three-
TAPES
play tapes on the tape deck.
head tape recorder which has separate record and
playback heads, you can make recordings while
listening to a reproduction of the recordings. In
other words, your amplifier can be used as a moni-
tor which lets you know the quality of your re-
cordings while they are being made.
e Connection
|. Single-connection tape recorder (DIN stand-
ard specification) : Connect the single-con-
nection connector to the “TAPE-REC” plug
on the back of your amplifier.
2. Pin-jack tape recorder
a) Recording
Connect the tape recorder input terminal
to R and L (R or Lin the case of
monaural operation) of the “REC?
terminals on the back of your amplifier
with shieldwires.
b} Playback
Connect the tape recorder output ter-
minal (“LINE”) to R and L (R or L
in the case of monaural operation) of the
220000000 es
ont
©
7 QO Q O0 0 0 (
eh AUX REC Mo |
as :6 5 o 6 O © a D. \
TAPE RECORDER
“TAPE MON” terminals on the back
of your amplifier,
3. Playing tapes on the tape deck
Connect the tape deck output terminal to
R and L (R or L in the case of monaural
operation) of the “TAPE” terminals on the
back of your amplifier.
4, Monitoring with a three-head tape recorder
a) Single-connection tape recorder
Connect the single-connection plug to the
“TAPE-REC” receptacle on the back of
your amplifier,
b) Pin-Jack tape recorder
Connect the tape recorder input terminal
to R and L (R or L in the case of
“REC”
terminals on the back of your amplifier.
monaural operation) of the
Álso, connect the tape recorder output
terminal “LINE” to R and L (R or
L in the case of monaural operation) of
the “TAPE MON" terminals on the
back of your amplifier.
e Operation
Recording
|. Set the “SELECTOR” switch at the proper
DIN glug connection
POWER SUPPLY
TO PLAYER AND
TUNER
(THESE TWO PLUG
RECEPTACLES CANNOT
BE USED FOR OVER
150 VA )
TO A-C LINE
(INSERT IN A PLUG
——
E A ñ
ai
[an Ge e
SINGLE-CONNECTION TAPE RECORDER
position according to the program source
(broadcast or record) you are going to record.
2. Set the “MODE” switch at “STEREO” (for
stereophonic recording), at R or L (for mon-
aural récording), or at L+R (for monaural
recording of a stereophonic source).
3. Prepare the tape recorder for recording.
Operate the recorder and amplifier adjusting
knobs and switches properly.
Amplifier adjusting knobs do not affect the level
and tonal quality of recordings, but only control
those of the sound from the speakers. When you
record a broadcast or record, you can obtain
better results by connecting the tape recorder
directly to your amplifier instead of picking up the
sound from the speakers with microphones.
Playback
|. a) Tape deck
Set the “SELECTOR” switch at
“TAPE”.
b) Tape recorder
Set the “TAPE MON?” switch at “ON”.
2. Set the tape recorder in the play position.
3. Other adjusting knobs and switches can be
used for the most satisfactory reproduction.
SPEAKERS, 16 OHMS EACH
Caution
When you use the Tape Recorder, Keeping on
“Tape monitor switch at “ON”, in such a case,
it can not use for mode switch”.
It you want to use a mode switch, connect the
recorder out put to the “AUX” pin jack on the
back of your amplifier and “Tape monitor swi-
tch at off.
Tape Monitoring
To use your amplifier as a monitor for a three-head
tape recorder, follow the same procedure as the
one for playing tapes on a recorder. When you
use a recorder, read the instruction manual care-
fully to avoid errors in connection and operation.
Unless you use your amplifier as a tape
monitor or for playing a tape with a tape
recorder, be sure to switch oft the “TAPE
MON” switch.
Connecting a tape recorder can be done using
either a single-connection connector or hy a
pin-jack. The single-connection plug con-
forms with German DIN standard specifica-
tions. It makes it easier to connect the tape
recorder to your amplifier because it has a
five-pin plug for both record and playback.
When you use your amplifier as a tape moni-
tor, turn on the “TONE DEFEAT” switch if
you want to hear the sound you are recording.
RECEPTACLE IN YOUR HOME}
TROUBLE-SHOOTING HINTS
e Speaker Polarity
If the phase (polarity, viz. +and—) of the right and left speakers is not correct, sounds at
the center of the frequency range become weak. You will particularly sense an attenuation
of bass. To make sure that speaker polarity is all right, play a monaural record on a stereo
record player. If the polarity is reversed you will have the result mentioned above. In
such a case, reverse the polarity of either speaker. (Connect the — leadwire to+) When
both speakers are thus made to agree in polarity, you will feel as if the sound comes out of
a single speaker placed midway between the right and left speakers.
© Fuse
The amplifier does not work when the fuse is blown. In such a case, disconnect the power
cord and replace the fuse on the back of the amplifier. Use a 3-ampere fuse encased in a
glass tube. Never risk the danger of using fine wire or a fuse of a larger capacity as a sub-
stitute. If the fuse has burnt out because the amplifier is out of order, locate the trouble
and repair it before replacing the fuse. The fuse blows if you use an AC plug receptacle
larger than the specified capacity (150 VA for two).
e Heat Generated by Amplifier
The top of the amplifier case becomes considerably hot after many hours of continuous opera-
tion. But this should not worry you because air vents are provided on the top and back of
the case. If you place something on the amplifier or put it in a closed box, or keep its front
panel facing up, 1t might go out of order.
@ Connections
When you connect your amplifier to a tape recorder or tuner, be sure to use an adequately
thick shieldwire. If you use an untwisted vinyl cord like those used for lights, you will suffer
from hum. Furthermore, do not use a wire longer than 2 meters (about 6.5 ft.) because
the longer the connecting wire is, the greater the attenuation of treble becomes. For con-
nection to a tuner or FM adaptor, use a wire 1 to 1.5 meters (about 3.3 to 4.8 ft.) long. When
you use the amplifier for monaural reproduction, it is easier for operation to use the upper
R terminal for connection. Be sure to set the “MODE” switch to the connected channel.
® Hum and Howling
When you play a record or tape, you may sometimes hear unpleasant humming or howling.
This does not mean that your amplifier is defective. In most cases, humming or howling
is a result of these causes:
If you place a record player on or near the speaker box, the vibrations of the speaker
cabinet caused by the sound waves from the speaker are transmitted to the player
and cause howling. To prevent this, keep the record player away from the speaker
cabinet or put a thick cushion between the player and the cabinet.
A low, buzzing sound will also be produced if you do not use shieldwire for con-
nection. If this is not the cause, examine the connections closely. Make sure that
the earth and live ends are not reversed so that the motor and arm are inadequately
grounded.
Connect Leadwires Properly
Connect leadwires properly to the speaker and other input and output terminals. If con-
nections are loose or touch other parts, your amplifier will not work properly. Moreover,
it may produce noise. If you use your amplifier in such a way for a long time, it may even-
tually break down. Finally, read the instructions for your tuner or tape recorder carefully
before you connect it to your amplifier.
This amplifier has passed our rigorous inspections and is guaranteed against accident
during transportation and against failure during use.
Return the enclosed user card, and you will receive a letter of guarantee. If your ampli-
fier should go out of order within 12 months after the date of purchase, you can have it
repaired free. (If you do not return the card, you will be asked to pay the net cost of
repair, even during the l2-month guarantee period.)
Send back the card within one week after the date of purchase. After the guarantee
period of one year, your amplifier will be repaired if necessary, at net cost.
Address your complaints and inquiries to our head office or the service section of our
sales office in your neighborhood.
Que 914 J0)SISUBl|
TEE
10 198027) 31JAJOJ 10913
SA PA ZA
140 EL 5140" C1
19 19 |] A
- LA
GA LA BA BA
‘ ZA
JapjoH esn4
= Bnd GOTIMS Ajddns 1amod”
101102027) 9174 1071791
i 1d
WIRING DIAGRAM
v, L2AX7 voy 2 12AX7 Vas GANS 4, 46AN8 — Kv, 7189 vin:
К
TUNER osB=381.2 © 20
PHORO
MIC - SOK SOX SOK
TLPE y _— пене
HEAD :
REC i
I
TAPE MOK |
1
AUX
1
авт Dez 00
YELLOW Bs
5
г
E
чо =
Г 3
nu
и, 12AX7 vip 72 | 2AX7
5K
TUNER | 25B-381x2
PHONO
В,
MAIN VR
)
ML AGANS * V,A8ANS — 1% 7189
1 aK
BALANCE VR
MIC
TAPE
HEAD
REC
Fer er гм 2M
TAPE
A OIL 82 В,
D MICA к yv 4 ED 8) - 37 HEAD
O MP = x2 - 7
Ф MYLAR п TC-02718 av PHONE
* NOISE LESS = 30V
© CERAMIC q 20mA LEET.PL RIGHT. PL
Sr (a-5) Ss (a-b) му =
1 MAC 1 OFF
2 Xtal 2 ON LOUDNESS : +
03 (Sg)
Spla~f) INPUT SELECTOR Ss la-d) De
! TUNER ! OFF
2 PHONO 2 ON TONE DEFEAT Sn ta-b} Sug LEVEL. METER Hiv
3 MIC | LEVEL LOW 1.2.34 OFF ‘
4 TAPE S4ta-d) 2 LEVEL MIDDLE 5 ON
5 AUX ! OFF 3 LEVEL HIGH
2 ON LOW FILTER Sup LEVEL METFR
S3 ta -c)MODE SELECTOR Sn 1.2.3.5 OFF
! REVERSE Spla~b) 1 OFF 4 ON
à NORMAL ! OFF 2 ONAL
3 MIXCR+L) 2 ON HIGH FILTER
4 CHAN A Sma PILOTLAMP
5 CHANL Sg (a-5) 1.2.34 OFF
I QFF 5 ON
Sa (a-b) 2 ON PRESENCE
1 OFF $4 PILOTLAME
2 ON TAPE MONITOR $ю (@-Ъ) 1.2.3.5 OFF
ION 4 ON
2 OFF SPEAKER
Some of the specifications might be changed without notice.
WIRING DIAGRAM
Vi I24X7 Va, e 12AX7 Va, 2 GANS Vv, % GANS ig. Vo 7189 1234
{ )
TUNER 20
PHONG
MIC
TAPE TA
HEAD
REC
TAPE MON
AUX
AST Joma —
YELLOW
BLACK Foo 8 4 12AX7
EARTH 5% DoD
TUNER 28B-381x2 e
PHONO
BLEND VR
©
BALANCE VR
ea % GANB Vs 45AN8 CENTER
o? ($15) CRSO!
MIC
TAPE
HEAD
REC
TAPE
AUX
— = = = =
A On B В, В,
a Mica 5 Ву + y 55 sv HEAD
O LAR a | ao) hele | SL om тонов PHONE
3 NOISE LESS _ hh mT = = Silos = = |
© CERAMIC = 8 — | 8 8 S pod 18 Ss 81 3 7 a 34 LEET.PL RIGHT PL
3 y Sm * So 3 EMS Ss RS 8 ®°
AS SEES Ya |
Sr (a-b) Ss (a-b) ми 5118 8 ; a
1 MAG ! OFF = a da Sis A wl, "a md (Spy) P1235 12.44
2 Xtal 2 ON LOUDNESS ® = Er PER = uw оз (5.4)
Sa ta-f INPUT SELECTOR Se tad) } E” So ne, Te “< a % < De
! TÜNER ! =
2 FHONO 2 ON TONE DEFEAT Sn (2-b} Srec LEVEL METER ET HIV
3 MIC ! LEVEL LOW 1.2.3.4 OFF
4 TAPE Sqla~d) 2 LEVEL MIDDLE ON
5 Aux 1 OFF 3 LEVEL HIGH y
2 ON LON FILTER Sian LEVEL.METER á
Sy (a-c) MODE SELECTOR Sp 1.2.3.5 OFF
y REVERSE Sgla-b) OFF 4 ON ai
2 NORMAL г ОКЕ 2 ON AC
J MIX{RL) 2 ON HIGH FILTER x
4 CHAN R Sia PILOTLAMP
5 CHAN L Sg la~b? 12.38 OFF
1 OFF 5 ON
Sa (a-b) 2 ON PRESENCE
1 OFF Sra PILOTLAMP
2 ON TAPE MONITOR $ю (a-b) 12.3.5 OFF
I ON ON
2 OFF SPEAKER
Some of the specifications might be changed without notice.
> >
>= > с
> > > > = =
= 5 333325 ЖЕ В Еж 33288 >
= hu
TE BEE ANNEX HB = N= = NERO ос =
зо хоре Aaa de INL © o ELE ZN
x 200565376595 2230 5 ada Sd x 31 81 2858 1%
I) © Yl x ow if) — DT A] NY RS à we ох iM x ON «< = < с с QQ о © > 5
ND OH окно С сб С O смог]. © © (© сы — MWD EEE a
\\ \\ | |
i
2KQ и
A orders > papel ls 29 2W
2 1009 L. TYPE
200uF 25WY |
e Pos US = тен A
Ne DE
12AX 7, 4uF 20WY
\ — )
40K2 30. TV—16 20K£
).005,F400WYV
30KQ 14W
a | 7KQ ZW
FR ES | | 5000 14 W
30KQ veu | Il 50 F50WV
| / I) SOuF25WV
3009 ZW | | 111) oF 2°
Em | 7KQ Y
=: Te |
NE
ASMA Cu A AN IR 2% 100Q L TYPE
сл. de: ERICA Y
N È 4 Рау
200uF 25WV = N Ka * KN \ № = Jai x A 2004 F 300WV
| a : E. e e 5 i E | В
30uF6WV | A | Mo > и
Мей | Q 14
TRH | (Bases CRSO1
, Ч H и
НА 74 N 2004 F 300WV
[ЗА Хх 1 LB a 150KQ LW
3000 YW - | p 30uF 6WYV
20KQ 16 — 15KQ 25 W
150PF50WW— —— de 150KQ 14 W
E AKQ 2W
150KQ 14W 150KQ 1W
Low
150KQ 14W j - AQuF X 2 500WV
2KQ М > ES SRS PR er 12A X 7
600K 14 W RE VR500K (АС)
300 F 6WV Au F20WV
5KQ 34 W MA 2 W
150PF500WY | | VRIMQ (N)
1
150KQ 34 W AL, 100KQ KW
| VRIMQ (N)
600KQ “w/ | | | CRSO?
! |
30KQ 7 / | | | || 0.001, F 400WV
| :
sore / / / | | | | | 0.01, F AOCWV
| ;
> > Г > =D = => пк > = Со => = = >
:: 23 <3 232 22 = = = TS: 53:23 222
O DO DN HN Her A © © (a, © © © S 2 > ое с ^^ D
OD O ad ada < NX 5 C © = 0 a Das Y a a 9 ©
L LL SE Oo 2D 17 © L Le Ww Ww о = 5 LL 4 S$ SB Sa 4
чо он ос WN FT TU © QO a non OS 1 © 5 A E
de 22 5 5 5 5“ = = 7 > 8
a о = = < © © 5 > S
o LE] > ©
AU-70 PARTS LIST
Name Specifications quantity Name Specifications quantity
Vacuum habe T1884 4 Resistor 14 watt, 1 kile-shm 4
{in two pairs)
’ я BANE 2 ¥ + + 1,5 kilo-ohms 8
, x 12AXY 3 г LE 2 kilo-ohma 3
Transistor 255-381 4 я . + 25 kilo-ohms 2
Germanium diode CaA-9 2 r E» 7 kilo-ohma 2
Selenium rectifier TCO.2P-11:3 1 , # 5 kilo-ohms 7
Silicon diode 5-18 z = FO 1 kile-ohms noiselesa 2
Crutput transformer 2 a , # 12 kilo-chms noiseless 2
Power transformer L # # * 12 kileobms 2
Rotary switch 26-5 1 P E 7 16 kilo-chma 2
» N 3-7-5 1 Y = 25 kilo-obhma 2
Variable resistor 1 megobm, (N}, HH-type 5 r « = 16 kilo-olima noiséless 8
x С 500 kilo-chms, (A), 180 kilo-ohma, | x r+ 50 kilo-ohms ö
with tan, 24-type, Z-gang 1 в Y # 60 kilo-ohma 2
y r 500 kilo-ohms, (A.C) 1 a » * 100 kile-chms 2
y , TY-15, 20 kilo-ohms, (BI 2 ’ 5 100 kllo-ohme noiseless 3
Hum balancer МЮ ohms, Layie 2 в » # TO kilochms noiseless 2
Composite part CRIN Е 5 » ” 170 kilo-ohms noiseless 2
, y CR302 2 = Е * 250 kilo-chraa d
Fuse-holder 1-p, covered 1 | 7 Eo I megobrn 2
Fuss J ampere 1 a ¥ # ? megolhuna E
Earphone jack БС не, 1 # #40) kilo-ohms 2
Power gource (rapafer switch 5-201 1 ¥ OY 40 kilé-chms z
AC plug receptacie Square, small 2 a # = 80 kilo-ohms z
Sp connector receptacle DIN standard 1 , ко & kifo-chma 3
Slide switch ВАЗЕ 7 # La wart, 15 kilo-ohma 1
2 Ё 1355L 622 1 к + #30 kilochms 4
ы - SL 1 , # 150 ktle-ohma в
Push switch Specal, 63.9 1 - =» 600 kilo-ohma 2
Filet lamp 8 volts 3 B "o. 5 megohms 2
Pilot lamp socket 5465 3 ¥ | watt, 30 ohms 2
Base for printed circuit ТЕР-2 2 , #» #50 klo-chme 1
Cord clip Molded 1 , +» 5) kilo-ohms 1
Level meter HO0-Eyrpee, 14-204 2 = P # 150 kibó-ohma 1
Tube aocket S-pin, molded 9 » 2 walis, 4 kilo-ohma 1
x a Tin, mólded 1 » ¥ = 2 ohms 1
Lug, self-supparfing, amall 1L, Фр 12 F 10 watrs, 16 chma 2
Lug, sel{-supparting IL. 7-0 3 Oil capacitor 0.006 microfarad 2
r x IL, 3p 1 x x 0.003 microfarad 2
ë a IL, 4-7 12 x ” 0.005 microfarad ñ
5 E iL, б-р i г Fr 006 miceofarad 1
Electralylic capacitor WY 300 vals, 200 microfarads 2 , » 0.01 microlarad 2
= Е WY 500 volts, 40 microfarads <2 1 ME capacitor 0.1 meroferad 4
= 7 WV 300 vols, 20 microfarads = 4 1 , « 0.2 microfarad 2
# + wWwY 50 volts. 59 microfarads 1 , 4 0.3 microfarad 4
E e WY 25 volts, 59 microfarads 2 x * 05 microfarad z
£ * WY 25 volta, 200 microfarads 2 Myler capacitor 1.01 microfarad 4
* w МГУ 6 volta, 30 microfarads 4 Г x 0.006 microfacad z
E Ч WY 12 volta, 30 microfarsda 2 E ¥ 0.025 microfarad 2
© a WW 10 volta, 30 microfarada 6 в , 0.05 microfarad ë
, r WY 12 volta, 10 microfarade 2 Mica capacitor 150 micromicrofarads 4
* + WY 20 volts, 4 microfarads 4 Ceramic capacitor 0.005 microfarad i
Ceramic réustar 12 kilo-ohma, 20 warte 1 Catalogue 1
м В 2 kilo-chms. 10 watts 1 AC cord a feat 1
Resistor 3 wall, HY hme 2 Input terminal plate 1
r x - 300 ohms 4 Chapa terminal plate 1
, = = 500 ohms 1 Antenna terminal plate 1
Head Office;
Osaka Branch;
Nagoya Branch; 2-11, Hanaomote-cho, AÁtsuta-ku, Nagoya.
2-16, Okamoto, Kasuga-cho, Tsukushi-gun, Fukuoka. Tel.
42, Sanko-cho, Shinjuku-ku, Tokyo.
Fukuoka Branch;
Show Room;
460, izumi-cho, Suginami-ku, Tokyo, Japan.
Tel.
Tokyo 328-0111
Tel.
Tel.
4-8, Miyakojima, Minamidori, Miyakojima-ku, Osaka. Tel. Osaka 928-4391
Nagoya 88-8463
Fukuoka 58-1253
Tokyo 368-4586
Printed in Jopan < 6409 >
а” са" на = = ——— Æ
Symptom
Probable Cause
What to Do
No power when power switch is | 1, Defective power switch,
pushed on
3.
2.
Defective line cord.
Loose contact between plug and socket or
defective plug.
Blown fuse.
Replace.
Replace.
Recondition or replace.
Replace.
| If again blown after replacing, check power
transformer (T,) & path condenser (Cg) in
power circuit for short-circuit.
Power indicator is lit when power
switch is pushed on, but;
A. the unit does not work at all. | 1.
Defective tube.
Abnormal voltage in tubes and other parts.
B. PNONO and TAPE does not I.
function.
| 2,
13.
° 4.
| 5.
C. Weak sound on AUX, 1.
PHONO and TAPE.
A. Normal voltage at every part | 1.
but weak sound on AUX
B. Normal voltage at every part | 1.
but weak sound on PHONO
and TAPE.
Check V,~V, and silicon diodes.
Check voltage in tube and other parts and
replace, if necessary. If voltage is OK, check
AUX input circuit and hereafter.
Defective head amplifier (transistor section).
Defective selector switch.
Loose contact or short-circuit between input
terminal and pin-jack.
Defective record player, tape recorder, or
others, connected to the unit.
Defective coupling condenser.
Replace transistor head amplifier unit.
Replace or repair Szusn and/or Sse, Ser
Replace or repair.
Replace.
| Replace C- and/or Ca.
Abnormal voltage in power circuit and Check and repair.
other parts.
Defective fixed resistance.
Short-circuit in output transformer.
Discharged capacitor.
Aged tube.
Defective slide switch or selector switch.
Defective selector switch.
Abnormal input circuit: loose contact
between input terminal and pin jack;
defective shielded wire.
Defective record player, tape recorder or
others, connected to the unit.
Defective coupling condenser.
Discharged bypass condenser.
Check R5- Ros, Res Ri and Compound part
CRS5O1, CRSOZ.
Check T, and Ts.
Check Co,—Cz4, Ca and Ca; tubular electro-
lytic capacitor Cas, Co Cao Ca-
Check Y — Ya.
Replace or repair Sa, Sin, Sas. Sib, Sea Sec-
Replace or repair Ssa, Saw, Soc, Szr, Sza and
Sa
Replace or repair.
| Replace
Check Ca Co, Cs, Ce, Ca, and Cs.
Check C;, C,, Cs, and Cy.
— 17 —
Symptom
Probable Cause
What to Do
Noise or bad connection of audio system
|
connected to the unit.
A. Distorted sound on AUX. 1. Aged tube. Check V,~V,.
2. Short-circuit in output transformer. Check and repair T. and T,
3. Delective loudspeaker, Replace.
4. Defective record player, adaptor or others, Replace
connected to the unit,
B. Distorted sound on PHONO | 1. Defective record player, tape recorder or Replace.
and TAPE. | others, connected to the unit,
2. Defective tubular electrolytic capacitor. Replace C, and/or C,.
| 3. Disconnection at fixed resistance. Chech Rs;-Rao, Ra, Ría, Ras, Ras, Ras, Raz, Ras
Rig, Rao, Roe and Ro.
| |
A. Hum on AUX. 1. Electrolytic capacitor discharged. Check Cas, Caoe-Cra, Cie Cs.
2. Defective tube. Check V ~V,.
3. Defective record player, adaptor or others, Replace.
connected to the unit,
4. Hum balancer not properly adjusted. Check VR,, and VR,;.
5. Disconnected NF resistor. Check Ras and Ra.
[= =
B. Hum on PHONO and TAPE. | 1. Defective shielded wire and/or wrong con- Replace and connect correctly
nection of record player, tape recorder or
others. |
2. Audio system and shielded wire induced | Keep proper distance between audio system
from outside. and inductor.
3. Residual hum of audio system connected | Replace or repair.
to the unit.
A. Noise on AUX and TUNER. | 1. Fixed resistor badly connected or touched Check Raz, Ras, Ri, Raz, Res, Res Ras Res,
by another part. | Ree. Raz, Roz, Raz, Ros, and Reg.
2. Capacitor nearly short-circuited or touched | Check Cie, Csr, Con Cor
by another part.
3. Primary coil of output transformer nearly | Check Ts, and Ta.
disconnected.
4. Defective tube. Check Y Ya.
B. Noise on PHONO and TAPE. 1. Fixed resistor defective or nearly discon- | Check R.~Ry,
nected.
2. Defective capacitor. Check C,~C,,
3. Replace or repair
—0 18 —
PARTS LIST
Part Mo.
RI SK {2
R2 5К 5),
Ra 100K (2
R4 100К ©),
Rs 150K 0
Rs 150K}
R7 170K 42
Ra 17 0К ©
Ro 100K {2
Rio 100K £2
Ru 15K £2
Riz 15K}
R13 300
R14 30082
R13 15K)
Ris 15K £2
R17 70K)
R13 70K)
R19 15K0
R20 158K0
Rai 12K)
R22 12K 82
R23 100
R24 1052
Ros 3KO
| Ro ЗК О,
| Ra7 t2K {2
R28 12K 0)
R29 16К 0
R30 16K O
R31 5K)
R32 5K £2
R33 50K (2
R34 50K (2
Ras 2.5K 0
R36 2.5K 2
R37 150K ©)
Ras 1 50K 0
Ra? TOOK Q
R40 TOOK O
R41 150K £2
R42 150K
R43 A00K 0
Rad 400K ©),
Ras 1.5K0
Ras 1.53K0
R47 SMS}
| Ras 5MO
R 49 100K £2
R50 TOOK O
watt
Yi Watt
LA Watt
La Watt
Watt
LA Watt
1 Watt
Watt
LA Wott
Y Watt
LA Watt
14 Watt
LA Watt
LA Watt
Wart
Ja Watt
LA Watt
LA Watt
LA Watt
LA Watt
La Wait
LA Watt
La Watt
LA Watt
La Watt
La Watt
LA Watt
La Watt
LE Watt
LA Watt
La Watt
La Watt
14 Wait
LA Watt
LA Wati
LA Watt
LE Watt
Le Watt
LA Watt
LA Watt
Le Watt
watt
14 watt
Watt
LA Watt
14 Watt
Le Watt
Ls Wott
+'10%
+10%
+10%
+ 10%
+10%
+ 10%
+10%
+10%
+10%
+ 10%
+ 10%
+ 10%
+10%
+ 10%
+ 10%
+ 10%
+ 10%
+10%
+ 10%
+ 107%
+ 10%
+10%
+ 10%
+ 10%
+ 10%
+ 10%
+10
+10%
+ 10%
+10%
+ 10%
+10%
+10%
+ 10%
+10%
+ 107%
+ 10%
+10%
10%
E 19%
+10%
=10%
+10%
+ 10%
+ 10%
+10
10%
= 10%
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Noise-Less
Noise-Less
Noise-Less
Noise-Less
Noise-Less
Carbon Fixed
Carbon Fixed
Noise-Less
Noise-Less
Noise-Less
Noise-Less
Noise-Less
Noise-Less
Noise-Less
Noise-Less
Carbon Fixed
Carbon Fixed
Noise-Less
Noise-Less
Carbon Fixed
Carbon Fixed
Carbon Fixed
Corbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Corbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Carbon Fixed
Enclosed in CRSO2
Enclosed in CRSO2
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
— 19 —
R31
R352
Rs3
К 54
Rss
R sé
Rs7
R 58
R59
Ré0
К!
Ré2
RE
Кс
Res
Réé
Re7
Rég
Reg
R70
R71
R72
R73
R74
R75
R76
R77
Ran
15K O
15K 0
TOOK O
100K (2
50K £)
50K {2
80K ©)
80K
1.5K}
1.5K}
2M 0)
2MO
150K {}
150K 0
20K ©)
2MO
2MO
MO
2MO
IMO
IMO
50K Q
50K O
50K 02
s0K O
50K 0
S0K O,
3000
3000
).5K (2
1.5K)
2K 0)
2K)
600K (2
600K (2
150K (2
150K 0)
12K 0
12K 0
KO
6K 0)
30K 02
30K 0)
50K 0)
30K 02
30K)
250K OQ
250K)
250K
250K 02
Enclosed in
Enclosed in
Enclosed in
Enclosed in
Li Watt
La Watt
LE Watt
LA Watt
La Watt
14 Watt
LA Watt
LA Watt
Le Watt
Le Watt
| Watt
La Watt
LA Watt
LA Watt
LA Watt
La Watt
14 Watt
Enclosed
Enclosed
Enclosed
Enclosed
Enclosed
Enclosed
LA Watt
LA Watt
La Watt
La Wait
LA Watt
14 Watt
La Watt
la Watt
<
Q
Th ea
=
2
Watt
L{ Watt
li Watt
LA Wait
lo Watt
14 Watt
1 Watt
14 Watt
La Wait
Le Watt
1, Watt
LA Watt
La Watt
“нс
EIA Pa I
+ 10%
+10%
+10%
+ 10%
+ 10%
+ 10%
+10%
+10%
10%
+ 10%
+10%
+10%
+10%
+ 10%
+ 10%
+102
+10%
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
in CRSO]
in CRSO!
in CRSO]
in CRSO]
in CRSO]
in CRSOT
+ 10%
+10%
+10%
+102
10%
E10%
+10%
10%
E 10%
+102
+10%
+10%
+10%
+10%
+ 10%
10%
+10%
+ 10%
+=10%
+102
E10%
E10%
+10%
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
TET Homenclature
CRSO2
CRSO2
CRSO2
CRSO2
Port No. Nomenclature |
Rio!
R102
R103
R104
R105
R104
R107
Rios
R109
Rilo
RI
В!12
R113
R114
Ris
Rites
R17
Rig
Rite
R120
R121
R122
R123
R124
R125
R126
R127
R128
R129
Rizo
C1
C2
C3
Сл
Cs
Cs
C7
Cs
Co
| Co
| CN
С12
C13
C14
Gals
Clé
C17
С18
Ci
1KO
KO
KO
1'KO
A0K O
AOK
25K £2
25K 0
50K O
50K {2
1602
1682
300
3082
2.5K 0
2.5K 0
5K O
150K
15K.)
4K {2
2K 2
12K 0
2k £2
5000),
7К ©
7K(2
7K
7K (2
6K {2
2K 2
30/F
ЗО ,‹Р
3OuF
ЗО (Е
ЗО ‚‹Р
30 uF
10/¢F
10,‹Р
ЗО ‹Р
30 (Е
0.06 uf
0.06 uF
0.0256
0.025 uF
0.01 pF
0.01 F
150pF
150pF
0.01 çeF
14 Watt
14 Watt
4 Wait
Y Watt
LA Watt
JA Watt
LA Wait
La Watt
14 Watt
Watt
1O Watt
10Watt
] Watt
1 watt
Zi Watt
LA Watt
La Watt
1 Watt
Le Watt
2 Watt
10Wait
20Watt
La Watt
LA Watt
La Wait
4 Watt
Ja Watt
LA Watt
La Watt
4 Watt
ТОМУ У
10WY
10WV
ТОМУ У
12WV
12w Y
10Ww Y
10w Y
10Ww Y
10WwY
50W Y
SOWV
SOWV
50W Y
SOWYV
SOWV
500WV
500WYV
50Ww Y
+10%
+ 10%
+10%
+10%
+ 10%
+ 10%
+10%
+= 10%
+ 10%
+10 %
+ 10 %
+10 %
+ 10%
+10
+10%
+ 10%
+ 10%
+10
+ 10%
+ 10%
+ 10%
+10%
+10%
+10%
+ 10%
+ 10%
+10%
+ 10%
+ 10%
+10%
Carbon
Carbon
Corbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Wire Wound
Wire Wound
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Wire Wound
Wire Wound
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
E 10%
+10%
+ 10%
+ 10%
+10%
+ 10%
+10%
+10%
+ 10%
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
mylar
mylar
mylar
mylar
mylar
mylar
mica
mice:
mylar
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
— 20 —
C20
C21
C22
C23
C24
Ces
C27
C28
C29
C30
Cal
C32
Ca
C34
C35
C36
C38
Cao
Ce
Cós
C67
Cos
Ca
0.0] uF
0.003 uF
0.003 çeF
0.1 gF
О.Л ие
Ар
Ар
0.00) «РЕ
0.001 pF
150pF
1 50pF
0.003 eF
0.003 FF
0.03 /‹Р
0.03 Е
20F
0.146
0.1 uF
ЗО Е
ЗО (Е
AF
Apr
0.005 uF
0.005 F
0.005 «F
0.005 4F
0.01 ur
0.01 uf
300pF
300pF
200pF
200pF
200pF
200pF
3OçeF
ЗО/‹Р
О.2 «Е
0.2 pF
0.54F
0.5F
80pF
BOpF
0.3uF
0.3 uF
0.3 xF
0.3 uF
20 uF
20 uF
207F
20nF
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubulor
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
Momenclature
50WV +10% mylar
AOOWY —E—10% oil
400WwY x10% oil
250WY z10% MAP
250WV x 10% MP
20WV Electrolytic
20WV Electrolytic
AOO0WVY +10 oil
AOO0WY +10% oil
Enclosed in CRSO2
Enclosed in CRSO2
Enclosed in CRSO2
Enclosed in CRSO?
Enclosed in CRSO?
Enclosed in CRSO2
300WV Electrolytic
250WV MP
250WV MP
6WY Electrolytic
6WY Electrolytic
20W Y Electrolytic
20Ww Y Electrolytic
400 w Y oil
400WV oil
400w Y oil
400 w Y oil
400WYV +10% oil
400WYV 410%; oil
Enclosed in CRSOI
Enclosed in CRSOI
Enclosed in CRSO]
Enclosed in CRSO]
Enclosed in CRSOI
Enclosed in CRSO1
6WY Electrolytic
óEóWY Electrotytic
2590WV +10% MP
250WwY +10% MP
250WV +10% MP
250WV 10% MP
5SOOWV -El0% mica
500WY + 10% mica
250WV + 1085 MP
259wwY 10% MP
250Wwv 10% MP
250\\МУ z10% MP
300WV Electrolytic lug
300wY Electrolytic lug
300WV Electrolytic lug
300WY Electrolytic lug
terminal
terminal
terminal
terminal
Cre
C7
Car
Cal
VR
VR
VR
TR
Sw
SiC
52€
sac
54(
Ss
Sel
S7(
Sat
59¢
Sie
Sn
$12
S13
S14
CC
О
— 20 —
C20
Cal
C22
C23
Ca
С25
С26
C27
C28
С29
Cao
Cal
C3?
C33
Cas
Cas
C36
C37
Cas
Cao
Can
Cal
Caz
Ca3
Cas
Cas
Cds
Ca
Css
Cs9
Cao
Cél
Có?
Cé3
Ces
Cos
Cós
Co7
Ces
Cs9
0.01 uF
0.003 ur
0.003 Е
0.1 uF
0.1 uF
AF
ALF
0.00] iF
0.001 uF
1500F
159pF
0.003 HF
0.003 F
0.03 xF
0.03 F
20/tF
0.1 pF
ОТ уе
30 uF
30 HF
4ftF
Ape
0.005uF
0.005 F
0.005 uF
0.005 F
0.01 uF
0.01 uF
JOCpF
300pF
200pF
200pF
200pF
200pF
30¢F
ЗОу‹Е
0.2uF
O.2yeF
O.5F
O.5gF
80pF
80pF
0.3 uF
0.3uF
0.3uF
0.34F
20 F
20F
20uF
20nF
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
tubular
a Nomenclature
sSOWY +109% mylar
ACOWY 10% oil
400WwY +10% oil
250WY —10% MP
2590WV +103 MP
20W Y Electrolytic
20w Y Electrolytic
400\\У 10% oil
A00WV +10% oil
Enclosed in CRSO2
Enclosed in CRSO?2
Enclosed in CRSO2
Enclosed in CRSO2
Enclosed in CRSO2
Enclosed in CRSO2
300WV Electrolytic
250w Y MP
250WY MP
EWY Electrolytic
6W Y Electrolytic
20Ww Y Electrolytic
20WYV Electrolytic
АООУУ У oil
400WYV oil
400WV oil
400WV oil
400WV +10% oil
400WY —+10% oil
Enclosed in CRSO]
Enclosed in CRSOI
Enclosed in CECRSO]
Enclosed in CRSOI
Enclosed in CRSCI
Enclosed in CRSO]
óWY Electrolytic
SWV Electrolytic
250WV +10% MP
250WY . + 10% MP
250wY 10% MP
250wY +10% MP
00WY +10% mica
500wYv l10% mica
250wVv 10% MP
250WV 10% MP
250wY £l0% MP
250WV 10% MP
300WV Electrolytic lug
300WV Electrolytic lug
300WV Electrolytic lug
300WV Electrolytic lug
terminal
terminal
terminal
terminal
C70 AO,uF 500WY Electrolytic lug terminal
C71 40uF 500WV Electrolytic lug terminal
С72 200uF 300WV Electrolytic lug terminal
Cra 200uF 300WV Electrolytic lug terminal
CM 0.005uF 600WY —+10% oil tubular
Crs 0.0054F 600WV +10% oil tubular
C76 50uF 50WwY Electrolytic tubular
C77 50uF 25WY Electralytic tubular
C78 2004F 25WV Electrolytic tubular
C79 2004F 25WVY Electrolytic tubular
Cao 0.005uF 500WV 10% Ceramic tubular
Cel 0.0SuF 400WY +10% oil tubular
VRi VR2 S00K (A) Variable Resistor 246 type
Loudness tap 120K{) (Volume control)
VR3~VRé 140 (М) Variable Resistor 24¢ type
(Tone control)
VR7 VRs 500K {2 (A.C) Variable Resistor 24¢ type
(Balance control)
VR19—13 50K£2 (B) Variable Resistor driver type
VRis VRis 100) Hum Balancer driver type
Y 1 Y 3b 12AX7 Pre amplifier
Y 4a= Y 5b SANS Phase splitter
Wem Vo 7187A Power amplifier
TRI-TRa Transistor 258-381 Head amplifier
T1 Power transformer
12,13 Output transformer
SD-1B Si diode AC (RMS) 280V ID 500mA
— 60°C — 4 100°C
SW-0503 Si diode AC (RMS) 90V ID 500mA
— 55° С + 100°С
S1{a~b) Cartridge switch
$2(0-1) Input Selector switch
S3{a—c) Mode switch
S4(a~b) Tape monitor switch .
S5(a~b) Lovdness switch
Sé(a~d) Tone defeat switch
S7(a~d) Low filter switch
S8(o—b) High filter switch
S5(o—b) Presence switch
Slo(a—b) Speaker switch
S11(a—b) Level meter control switch
$12 Power switch
5130, 135 Level meter pilot lamp switch
$140, 14b Level meter switch
CO1~2 AC outlet
QA-?] Ge, diode YVD=90V ID=25mA
—55°~.75°C
Part Na. Momenciature
SCHEMATIC DIAGRAM
TUNER 258-381x2
MIC
TAPE
HEAD
REC
TAPE
MON
AUX
бу
258-381 x2
PHOND
MIC
YAPE
HEAD
MON
AUX
os Sad
Rp 5K S001
Cig
A OL
Oo MICA 55 La-6)
О МР | OFF
@ MYLAR ? ON LOUDNESS
E NOISE LESS Seiad)
O CERAMIC vo a
Sy [a-5} 2 ONTONE DEFEAT
| MAG Sqla~d}
2 Atal 1 OFF
2 ON LOW FILTER
Sala-F INPUT SELECTOR
| TUNER Sg lab)
? PHONO I” OFF
3 MIÉ 2 ON HIGH FILTER
4 TAPE
Sala-b)
5 AUX 1 OFF
5yla~c) MOOE SELECTOR — ? ON PRESENCE
| REVERSE Su (a)
7 NORMAL 1 ON
3 MIX(R+L) > OFF SPEAKE
4 CHAN R SPEAKER
5 CHAN L
54 (a-b)
| OFF
2 ON TAPE MONITOR
v, 1 2AXT
E
v 12AX7
mr a a a A A — жа
Sy la~b)
{ LEVEL LOW
2 LEVEL MIDDLE
3 LEVEL HIGH
52
1 OFF
2 NAC
Size PILOTLAMP
1,2,3,4 OFF
9 oN
Sex PILOTLAMP
12,35 OFF
4 ÓN
Va, % 1 2AX7
== с o A a я
Sua LEVEL METER
12,3,4 OFF
5 ÓN
Sug LEVEL METER
1,2,3.5 OFF
4 ON
By
43V
° (30-18) х 2
Cn
7
бы
2 4BANS Vi, = BANS
Raz
Va. %: BANB vu % GANS
Ve, Va 71 ag
В,
4.4 7189
HEAD
т PHONE
LE
(Eve! i]
LEFT.PL RIGHT.PL
21
SCHEMATIC DIAGRAM
“а # 12АХ7 Vu % GANS Ya %26AN8 1,1 7189
TUNER ©
PHONG ©
MIC | a 5 Е - “a о | RS ann
TAPE - 9
HEAD
REC
TAPE = -
MON Y e à josv
MUA Te of
> ry
e 5
des |=
yet =
BLACK lor
7 Re =
TUNER OS
(52) =
PHONO a
|
[m= Rm — C EM i
Me SK AN y ANS 3 у y =i LE Hing File pr
TAPE ' I VIF a Ter Г = Te) — ' = E 2
HEAD SI SL SL SH у
! I a HOVE! , tom LOW
REC ‘ SS BIN | q
TAPE , BTS 25%:
MON ES + 3 3813 pio MIDOLE
AUX 1 FL ; SE 15 L— de ¡LP MICA,
==] . 3 al | co | Sm)
of = | | =
A we (Sag) 1 | LEVEL
op on Vd } EP METER
Aa КО BOLD! 84 185Y Lea |
Cig + A |
A ON. 5 à 8 | | Eu
O MICA 5, (2-51 E E X x Pus GDA JO ED
ome | Off SF oe © A ye
A MYLAR 2 ON LOUDNESS Sw0503 Pue 90 267 Bl Ci ;
E NOISE LESS BROWN 34 SOUR EV THEY Epi Ra % |
- Sg land) = — NM II TIT MAC EV sea»
© CERAMIC ГОДЕ = gov. |& 18° gl 3 EE Wu
6 (a-b) zZ On TONE DEFEAT a 20mA E 3x 1g le Tic : LEFT.PL RIGHT.PL
= 1 = = = 3 a Cy
| MAG Sqta-d} Bo WHITE E EE Zab 2:3 5 er | 7
2 Xtal 1 OFF ay = = pc. i = |
N LOW FILTER ‘ = m + |
SatasFdimeur sevecror © OV CONT = BEN zea v ul, ue Y e e (LIA6 ¿hLIA
| TUNER Sa (a- > ar 1 e 343 JA = “ой, E 4 3 E
2 PHONO OFF Su te<b} ali Mu - à $id LES a]
3 MIC > ON HIGH FILTER 1 LEVEL LOW E Ear LT a ra KT OC Za wl Or
4 TAPE 2 LEVEL MOK E a JA = GRE К
5 AUX Sa (cb) 3 LEVEL HIGH
Sala=el MODE SELECTOR —? ON PRESENCE Sn Sua LEVEL. METER
[ OFF 12.34 OFF IH da "NT y
! REVERSE Sp land) 2 ОН А 5 ON
à ee | oN Sia PILOTEAMP
3 MIX “За 2
à CHAN RE 2 OFF SPEAKER 129,4 DEF Sus LEVEL METER 2 bo Ta
5 CHAN L 5 ON 1,2,3,5 or BEN ATV 2
4 у
Sab PLOTLAMO =
-b)
Sle 15 DA = {fac
2 ON TAPE MONITOR ON —]
— 21 —
PARTS LAYOUT
Сто,С71
12AX7 12AX7
SANS SANS 12AX7
Г В [ AC CONNECTOR
E
To 13
71894 71894 7)89A 7189A N A
FUSE (ЗА)
MAG TAPE REC. — METER
rO0 O00 000
TAPE TAP
El PHONO MIC [27% TUNER AUX REC path
ооо
X-TAL
HI
MID.
LOW
CENTER e © a
162 82 с
©
CHANOUT & S ©
——. 22
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement