Panasonic Technics SL-1600M User manual

ORDER NO. SD7702-1182
Direct drive automatic Turntable System
Specifications
Turntable section
Type:
Drive method:
Motor:
Turntable platter:
Turntablespeeds:
Pitch controls:
Wow and flutter:
Rumble:
Specificationsare subject tochange without notice for further improvement.
Weights and dimensions shown are approximate.
Direct Drive Automatic TurntableSystem,
Automatic start, Automatic return, Automatic
shut
- off and MEMO - REPEAT play Manual
play
Direct Dr~ve
Back Electromotive Force Frequency
Generator servo DC motor
employing one chip IC
Alurr~inumdie - cast, 33cm (13 " )
33-113 and 45 r.p.m.
Individual adjustment controls. 10%
adjustment range
0.025% W.R.M.S (JISC5521)
k0.035%Weighted zero to peak
(DIN45507)
- 50dB (DlN 45539A)
- 73dB (DIN45539B)
Tonearm section
Type: Universal tubular arm, staticbalanced type
Effective length: 230mm(9
- 1/16',)
Overhang: 15 mm
( 19/32 " )
Friction: 7 mg (horizontally and vertically)
Effective mass: 22g (6.0 g cartridge weight 1.75 g stylus
pressure)
Tracking error angle: Within +3O at the point of 145
mm
(5 - 45164 " )from the
center
i
within +lo at the point of 55 mm
(2-3116") from the
1
center
Offset angle: 21.5O
Adjustablestylus
pressure range:
I I
0 to 3 g (styluspressure direct reading
tv pe)
Cartridge weight range: 5 to11 g
Head shell weight: 9.5 g
General
Power supply: AC 120V.50or60Hz
Power consumption: 6 W
Dimensions: 12.5 x 45.3 x 36.9 cm
(HxWxD) 14
- 15/16 x 17 - 12/16 x 14 - 9/16 inches)
Wegiht: 9.0 kg (19.8 ibs.)
Panasonic Company MatsushitaElectric of Hawaii, Inc. Matsushita Electricof Canada Ltd.
Technics
Divisionof Matsushita Electric 320 Waiakarr~iloRoad, Honolulu,
40 Ronson Drive, Rexdale,
Corporationof America Hawaii 96817 Ontario, Canada M9W
1 B5
One Panasonic Wav. Secaucus,
bypanasonic NewJersey 07094.
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Parts identification
Output terminals
Hinge
Pitch control knobs
1 1 Turntablebase
Fig. 1
Assembly and set - up
Apply two or three drops of oil to the motor shaft
using the furnished oil container.
(SeeFig. 2)
Although the unit has been lubricated before shipping
from the factory, apply a few drops of oil to the
motor shaft for assurance. After that, application of
two or three drops of oil once every 2000 hours'
operation or so is sufficient. The time interval is
much longer than that of the former type motors
(200 - 500 hours), so do not apply too much oil, nor
more frequently than necessary. Never use any other
type of oil.
.
(1) For removal of the cover, take off 4 vis - screws
from the panel cover.
(2) Draw out three connectors.
(3) For separation of the body from the main
base, turn the cueing lever upward, move the
tone
- arm in inboard direction, then lift up the
body.
Note:
The turntable horizontaliy to the panel face is
already adjusted before shipment.
If deviated, correct it by means of the adjust
screws using a5mm box spanner.
1. Remove thecartrige.
2. Fix the tone arm to the arm rest.
3. Remove the turntable.
4. Turn the player set upside down with good care
not todamage theacryl cover.
5. Take off 4 vis - screws from the back panel.
6. Place the player set face upward holding it with
both hands so that the body is not separated from
the main body.
121 SL - 1600
Turntable base Main base
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H Adjustments
Adjustment of the arm lift height (See Figs. 4 and
5)
The arm lift height (distance between the stylus tip
and record surface when cueing lever is raised) has
been adjusted at the factory before shipping to ap
-
proximately 5 to 10 mm (311 6 " to 25/64").
If the clearance becomes too narrow or too wide be -
cause of the physical size of the different cartridges
on the market turn .theadjustment screw clockwise or
counterclockwise, at the same time pushing the arm
liftdown.
Clockwise ratation
- distance between the record and stylus tip is reduc -
ed.
Counterclockwise rotation
- distance between the record and stylus tip increases.
Note:
As the adjusting screw has ahexagon head, be sure to
make the adjustment while depressingthe arm lift.
Adjustmentsfor automatic start and automatic return
positions (See Fig.
6)
Should the tonearm not function correctly, make
adjustments according tothe follwing procedures.
Adjustment for automatic start position
(Removethe rubber cap.)
In cases where the styl~stip descends outside of the
record.
- Move C~OCKW~S~.
In cases where the styus tip descends ontohalfway of
a recorded piece.
- Move counterclockwise
Adjustment for automatic return posittion
(Remove l~rntablesheet.)
n cases where the tonearm tends to retclrn befor the
playing has finished.
- Move clockwise.
In cases where the tonearm fails to return after the
last groove of the record.
- Move counterclockwise.
Speed adjustment (with pitch control knobs) (See
Figs. 7.8 and
9)
Strobe dots are set on the tapered rim of the turn -
table platter according to the power frequency and
the number of revolutions of the records. Make
adjustment, referring to strobe dot indication. (See
Fig. 7)
1. Set the speed selector to the number of revolutions to
be adjusted. (SeeFig.
8)
2. Release the arm clamp and raise the cueing lever
3. Move the tonearm to a slight extent towards the
turntableplatter.
The strobe illuminator/pilot lamp will be lit for it
-
luminating the strobe dots.
4. While turning the pitch control knobs either to "+"
side or "-" side, adjust to such an extent that the
strobe dots of the turntable look as if they were
stationary.
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The state under which the strobe dots seem to be power source affects the strobe illuminator, the strobe
stationary represents the correct number of revolu
-
dot pattern also seems to fluctuate to a certain extent.
tions. But the unit is not affected by
- the fluctuations of the
"+" direction
power source, since a D.C. motor is employed.
This increases the speed of the turntable rotation, and
5, If the desired speed can not be obtained by the variable
the strobe dot pattern seems to flow in the same pitch controls, turn the speed adjusting screws with a
direction as the rotational direction of the turntable screw driver for further adjustments. (See Fig.
9)
platter.
"-" direction
This decreases the speed of the turntable rotation,
resulting in a state opposite to that in the
"+" direc -
tion.
Note:
Strobe dot pattern.
The strobe illuminator/pilot lamp of this unit employs
the commercially available power source. The frequency
of such power source, when actually measured, has a
fluctuation of about 0.2%. As such a fluctuation of the
Cross sectionof motor portionand double insulator
Motor shaft (Center spindle) Position detecting rotor
Tonearm
Turntable mat Dust cover
Stator
I Position detecting coil
I I-
\ Main base \tator frame
V isco-elastic material
Operation principles of the SL - 1600
Arm base
This unit, like the SL 1300 has a rational motor structure, and its drive control circuit is the B.F.G. type (Back
TECHNICAL EXPLANATION electromotive force frequency generator) which is constructed on a single integrated
circuit (IC) chip (AN630). The following is a block diagram of the IC (AN6303 for which the operating principle will
be briefly explained
Operating principle
The back electromotive force, which is generated by the
drive coil winding according to the rotation of the
motor, is detected and converted to a frequency signal
that is proportional to the numder of revolutions.
Conversion is performed by a wave
- shaping circuit and a
logic circuit (This is referred to as the B.F.G. method).
This frequency signal is compared with a standard signal
by means of a frequency
- voltage conversion circuit
which converts
it to a voltage signal in order maintain a
constant number of revolutions. After removing un
-
necessary
frequency components, with
- the operational - amplifier
active filter, from this voltage signal, itcontrols the cur
-
rent flow in three differential switching circuits. As a
result, the flow of current in the drive coil winding is
always constant maintaining the correct rotational spe
-
ed. Control of the rotational speed can be performed by
means of adjusting the standard signal generator circuit
according to the rotational speed adjustment cricuit.
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Explanation of each part
1. B.F.G. METHOD (BACK ELECTROMOTIVE
FORCE FREQUENCY GENERATOR)
Making use of the back electromotive force that is
generated in the drive coil winding of the motor as a
frequency generator, the frequency of the frequency
generator is converted to the number of revolutions for
the turntable.
After shaping the wave form of this back electromotive
force,
it is composed logically, and a frequency is
generated that is proportional to the number of revolu
-
tions. This is the use of the B.F.G. Making use of the
drive coil winding, frequency generator coil windings
and magnets are not necessary, yielding a motor struc
-
ture that is very compact.
2. FREOUENCY - VOLTAGE CONVERSION CIRCUIT
Being composed of a trapezoidal wave generatingcircult.
a pulse generating circuit and a samplingintegration cir
-
cuit, the B.F.G. output frequency is converted to a vol -
tage, and control output voltage is generated inorder to
maintain the rotational speed of the turntable at acons
-
tant level.
Block diagram
3. OPERATION CONTROL CIRCUIT
The operation control circuit functionsas a control out -
put voltage control keeping the rotational speed of the
turntable constant with regard to the start of turntable
operation and the operation of the mechanism. With
this circuit, transient response characteristics and start
-
ing characteristicsare very good.
4. OPERATIONAL AMPLIFIER (OP AMP) ACTIVE
FILTER
Because of using an operational amplifier in the active
filter, an ideal filter operation is possible.
As a result, such high performance as a signal
- to - noise
(SN) ratio of 60 dB (IEC - B) and awow - and - flutter level
of
0.03% (WRMS)have been achieved.
5. DRIVE CIRCUIT
By incorporating a large copacity power transistor in the
integrated circuit, a starting torque of
1 kg - cm can be
obtained. By means of this large starting torgue, prompt
starts have been realized.
6. THREE DIFFERENTIAL SWITCHING CIRCUITS
By means of the signal from the position signal coil, the
starting circuit power transistor selector operates,
obtaining smooth rotation.
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Schematic Diagra
(This schematic diagram may be modified at any time
with the development of new technology)
____
-
-
-
-
-
-
-
-
-
-
-
-
-
AC
IZOY
I
I
--------------------
SVDMI
-
152
I
RECT
AN630
NOTES:
RECT
1. S1:
Power swltch 1s off
position.
2.
S2
-
1, S2
-
2:
Speed selector swltch
IS
33
-
1/3
r.p.m
position.
3.
The voltage values entered are the values measured
from the chassls with a standard tester that has an
internal
resistance
of
100Kfl/V
at a
rotational
speed of
33
-
1/3
r.p.m.
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Circuit Board Wiring View
POWER
SWITCH
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EXPLODED VIEW OF TURNTABLE
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EXPLODED VIEW OF TURNTABLE
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H
REPLACEMENT PARTS LIST
ECEA50ZR22
ECQMlH104KZ
ECEA50ZR33
ECEA50M2R2R ECEA50MR33R
ECQM1H472KZ ECQMlH223KZ ECQM1H823KZ ECQFlA473MD
ECQUlA473MC
table Mat, Set for [MC]
SFTE170-01A
SFNN16OMO1 Name Plate, Set for [MC]
Clarnper, AC Power Cord
Spacer.AC Power Cord
ERD25TJ330 ERXIANJ2R7
2.7R. 1W.
k
5%. Metallic
ER025CKF3902 39KR. 1/4W.
L
1%. Metallic
ER025CKF6202 68KR. 1/4W.
*
1%. Metallic
ERD25TJ473
47KR. 1/4W,
*
5%. Carbon
ERD25TJ124
120KR. 1/4W.
*
5%. Carbon
ERD25TJ563
56KR. 114W.
*
5%, Carbon
ERD25TJ102
1KR. 1/4W.
*
5%. Carbon
ERXlANJlR5
1.5R. 1W.
*
5%. Metall~c
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