Technics SL-1200M3D User Manual

ORDERNO.AD9903091C1

Service Manual

Direct Drive Turntable System Turntable System

SL-1200M3D

Colour

(S)............Silver Type

Areas

(P)............ U.S.A.

(PC).......... Canada.

• Specifications

• General

Power supply: Power consumption: Dimensions (WxHxD):

Weight:

• Turntable section Type:

Drive method: Motor:

Turntable platter:

Turntable speeds: Starting torque:

Build-upcharacteristics: Braking system:

Wow and flutter:

Rumble:

AC 120V,60Hz

14W

453 x 162 x 353 mm

(17-27/32" x 6-12/32" x 13-29/32")

12 kg (26.4 lb.)

Quads direct drive Manual turntable

Direct drive

Brushlees DC motor

Aluminum diecast

Diameter 332 mm (13-5/64")

Weight 1.7 kg (3.74 lb.) 33-1/3 rpm snd 45 rpm

1.5 kg-cm (1.3 Ib-in)

0.7s.ffrrom standstill to 33-1/3 rpm Electronic brake

0.01% W.R.M.S."

0.025% W.R.M.S.(JIS C5521 ) ±0.035% peak (IEC 98A Weighted)

-56 dB (IEC 98A Unweighted)

-78 dB (IEC 98A Weighted)

• Tonearm section

Type: Effective lenghth: Arm height adjustment

range:

Overhang:

Effective mass:

Offset angle:

Friction:

Tracking error angle:

Stylus pressure

adjustment range:

Applicable cartridge

weight range:

(with auxiliary weight);

(with shell weight);

Headshell weight:

Universal

230 mm (9-1/16")

0-6mm

15 mm (19/32") 12 g (without cartridge)

22°

Less than 7 mg (lateral, vertical) Within 2032' (at the outer groove

of 30 cm <12"> record) Within 0032' (at the inner groove

of 30 cm <:12">record)

0-4g

11- 20.5 g (including headshell)

9.5- 13g 17 -20.5 g (including headshell)

3.5 - 6.5 g 11- 14g (inaluding headshell)

7.5 g

*This rating refers to turntable assembly atone, excluding effects of record, cartridge or tonearm, but including platterMeasured by obtaining signal from built-in frequency generator of motor as sembly.

/i,. WARNING

This serviGe information is designed for experienced _epair technicians only and is not designed for use by the general public. _tdoes not

contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to serwce or

repair the product or products dealt with in this service information by anyone else cou(d result in serious injury or death.

Technics °

Note:

Specifications are subject to change without notice. Weight and dimensions are approximate.

and distribution is a violation of law,

SL-1200M3D J

• Contents Page

• Safety Precaution ..................................................... 2

• Accassorles ............................................................... 2

• Features ..................................................................... 3

• Controls ..................................................................... 3

• Preparation of the cartridge ..................................... 3

• Putting the player together ...................................... 4

• Connections and installation ................................... 5

• Preparatory adjustments ...................................... 6,7

• Playing records ......................................................... 8

• Adjustments while using the unit ............................ 9

• Maintenance ............................................................ 10

• Troubleshooting guide ........................................... 11

•Operation Checks and

Component Replacement Precedures ... 12-16

•Schematic Diagram .......................................... 17-19

•Printed Circuit Boards ...................................... 20-22

• Measurements and Adjustments ........................... 23

•Block Diagram ......................................................... 24

•Wiring Connection Diagram ................................... 25

• Repracement Parts List ..................................... 26,27

•Cabinet Parts Location ...................................... 28,29

• Packaging ................................................................ 30

Page

• Product service ....................................................... 10

• Safety Precaution (This "Safety Precaution" is applied only inU.S.A.)

1.Before servicing,unplug the power cordto prevent anelectric shock.

2. When replacing pads, use only maanufaacturer's recomended components for safety.

3. Check the COnditionof the power cord. Replace if wear or damage isevident.

4. After servicing, be sure to restore the lead dress,insulationbarriers, insulation papers, shields,etc.

5. Before returningthe serviced equipment to the customer,be sure to make the following insulation resistancetest to prevent the customer from being exposed to a shock hazard.

• INSULATION RESISTANCE TEST

1. Unplugthe power cord and short the two prongs of the plug with a jumper wire.

2. Turn on the power switch.

3. Measure the resistance value withohmmeter between the jumpered AC plug and each exposed metal cabinet pad, such as screwheads antenna, controlshafts, handle brakets, etc. Equipmentwithantenna terminals shouldread between 3 MQ and 5.2 MQ to all exposed pads. (Fig. A)

Equipment withoutantenna terminals should read approximately infinityto all exposed pads. (Fig. B)

Note: Some exposed pads may be isolated from the chassis by design. These will read infinity.

Antenna J terminal _

Ohmmeter

(Fig. A)

Resistance = 3 MQ - 5.2 M_

4. If the measurement is outside the specified limits, there is a possibilityofa shock hazard. The equipment should be repaired and rechecked before

it isreturned to the customer.

(Fig. B)

Resistance= Approx. o_

Accessories (onlyforU.S.A.)

TOorder accessories contact 1.800-332-5368 or web site (http://www.panasonlc.com).

Turntable .................. 1 pc.

(SFTE172-OIZ)

Turntable mat ............ t pc,

(RGS0OOS)

Disc slip sheet set......1 pc.

(RGS0005Z)

•Disc slip sheet

•Transparent sheet

Dust cover ............... 1 pc.

(SFADI22-OIA)

Shell with stylus weight

(SFPCC31005K) ......... 1 pc.

Balance weight ......... 1 pc.

(SFPWG17201 K)

Auxiliary weight ......... t pc.

(SFPWG17202)

EP record adaptor......1 pc.

(SFWE0t0)

Shell weight .............. 1 pc.

(SFPZB3501)

Overhang gauge ......... 1pc.

(SFK0135-01)

Screw set for cartridge..,...1 pc.

.Nuts(RHN26003)

•Screws-short(SFCZV8801 )

•Screws-long(SFPEVg801 )

-Washers(SFPEW9601)

I A cartridge is not included. 1

2--

(Shell

weight'l)

Stylus

--@

/-@

--@

(Stylusweight"2)

cartridge

stylus weight

gauge

I SL-1200M3D

• Featu res

A masterpiece amongst turntables with a worldwide reputa- tion.

Pitch control reset button

• Pitchcan beinstantlyresettothe rated speed(33 1/3 or 45 rpm). Highly accurate turntable speed maintained continuously with a quartz pitch control

• The pitchcanbe variedbetween-8 and+8%, withaccuracymain-

tainedthroughouttherange.

The direct drive produces high torque

• Wowand flutterbelow0.01%. Starting torqueof 1.5 kg/cmenabting

theturntableto reach33 1/3rpm in 0.7seconds.

• Fullyelectricbrakingsystem.

Tone arm with gimbal suspension

• Thetonearmcanbefinelyadjustedina rangeof 6 millimeterswiththe Iockableheightcontrol

Anti-vibration design with 3 layer cabinet construction and large insulating legs. Pop-up stylus light.

• Controls []

No. Name Referenceparle(s)

(DEP record adaptor ............................. 8

_) Turntable base ................................ 3

_) Turntable mat (Or disc slip sheet) ................ 4

_) Center spindle ................................ 4

_) Turntable ..................................... 4

® Strobe lights .................................. 9

(_ Power switch (power) .......................... 8

_) Strobe illuminator/pilot lamp .................... 9

® Start/stop button (start - stop ) ................... 8

Speed select buttons (33, 45) .................... 8

Arm-height control ............................. 7

Shell stand ................................... 3

O Balance weight ................................ 4

@ Stylus pressure control ......................... 6

Arm lock ..................................... 7

Anti-skating control ............................ 6

_) Cue lever ..................................... 6

Arm clamp .................................... 6

(_ Arm rest ...................................... 6

Tone arm ..................................... 4

LED indicator ................................. 9

Pitch control (Pitch adj. ) ........................ 9

Locking nut ................................... 4

Reset button (reset) ........................... 9

Head shell .................................... 3

Stylus light switch ............................. 8

@ Stylus light ................................... 8

YES NO NO

• Preparation of the cartridge D

[] Attach a cartridge (not included).

Follow the cartridge's instructions to correctly attach Stto the head

shell,

• Use the included shell weight "_ when using a light cartridge (3.5

to6.5 grams).

• Usethestylusweight-2toincreasestyluspressure( ,,_page 6). Leaveit oftuntilstylus pressurehasbeenadjusted.

[] Adjust the overhang.

Fit the included overhang gauge to the head shell.Adjust the over- hang and facing of the cartridge and tighten the screws.

• Line the point of the stylus up with the end of the gauge,

• The cartridge should be parallel on the shell head.

--3--

SL-1200M3D J

• Putting the player together

Put the player together in the following order.

• Do not connect the AC power cord until set up is complete.

• Leave the dust cover off until set up and adjustments are complete.

ill Fit the turntable ® and turntable mat @.

Putthe turntable on the center spindleand then Jaythe mat on top.

• Be very careful when putting the turntable on the main unit. The magnet on the bottom of the turntable is finely adjusted and

sharp contact can cause it to move and lead to poor operation. Ensure the magnet remains free from dust and iron particles.

• Do not adjust the screws attaching the magnet to the turntable. The rated performance of the unit cannot be guaranteed if the magnet is moved.

[] Attach the head shell @.

Fittheheadshellintothetonearm,keep it horizontalandtighten thelockingnut.

[_"] Attach the balance weight @ to the rear of the tone

arm.

If thecartridge weighsbetween 10and 13 grams, attachthe in- cludedauxiliaryweight_) tothemainbalanceweight.

ill ...... ii i_uH

When the player Is to be used for scratch play IE] Use the disc slipsheet _) instead of the turntable mat. This enables the

record to be easily moved during play,

•Top (printedside): Lay the record on this side.

•Bottom: Slippery side,

For a different kind of slip

Putthe transparent sheet @ under the disc slip sheet,

--4--

I SL-1200M3D

• Connections and installation

0 Connect the stereo cords and earth lead.

If the earth lead isn't connected, a hum will be heard from the AC power source.

This unit

To household AC outlet O l

AC120V,60Hz Stereo cords

This unit O This unit O

, N

_" _ (Whffe)_ r _(Red) 6 _ (White)

To phono

terminals

earth lead

'"")(°)-25!...........11 ,.,-°,L,

? _N Nk

Audio mixer I

Connect the AC power cord.

• Connect this cord onlyafter all other connections are complete.

• Confirm the wattage of AC outlets on amplifiers and receivers be- fore using them for this unit. This unit consumes 14 W.

[]

• Disconnect all units from the power source before making any con-

nections.

• Reconnect the AC power cords after all other connections are com- plete.

• Install the unit on a horizontal surtaoe protected from vibrations.

• Keep this unit as far as possible from speakers.

• Ensure the unit is not exposed to direct sunlight, dust, humidity, and

heat from a heatingappliance.

• This unit may pick up interference from a radio if there is one nearby. Keep radios as far as possible from this unit.

] Adjusting the height of the insulators [] I

Place the unit where it is to be used and adjust the height of the legs to make the unit horizontal,

SL-1200M3D I

• Preparatory adjustments

i'_Release the tone arm.

O Take care with the stylus and removeits cover, then

release the arm clamp.

O Free the tone arm fromthe armrest.

_'_1Adjust horizontal balance

9 Push the cue lever down. _P_Turn the anti-skating control to "0",

(fJ)Turn the balance weight until the arm is approximately

horizontal.

Takecareatthistime notto allowthe stylus totouch theunit.

Armclam

Armrest

, . ,

YES 6_======_ Balanced

,,/#///'/,,'///_/#/#/,

NO _ Too far forward

NO _ Toofarback

./#////-////,r/..-//-#/

Anti-skatingco

[]Turn the stylus pressure control to "0"

Return the tone arm to the arm rest and fix it with the arm clamp. Turn the stylus pressure control to "0",

Holdthebalanceweightstillwhiledoingthis,

[] Adjust stylus pressure

Turnthebalanceweightto adjustto theappropriatepres-

sure for the cartridge you are using. See the cartridge's instructionsfor recommended stylus pressure.

The stylus pressure contrctwill turn at the same time. Stop when the center linepoints to the required pressure.

To increase stylus pressure for scratch play [] Usethestylusweight(included)toincreasestyluspressureby4 grams.

Armclamp

[_ ;._Released_ i_d i

I SL-1200M3D

(Preparatory adjustments)

, o J I_

Adjust to the same value as the stylus pressure control. Ifstyluspressureisover3 grams,setthiscontrolto"3".

• - o - • _']

Release the arm lock. Compare the height of your cartridge (H) with the follow-

ing and set the arm height appropriately.

• Arm heightis indicatedin millimeters on the arm-height control,with marks indicating 0.5 millimeter intervals, Turn the control to the required height.

Cartridge height (H) in millimeters

t7 18 19

2O 21 22

• If you do not know the height of your cartridge, rest the stylus on a record and adjust the height control until the tone arm is parallel

with the record.

Height control

position

2 3

4 5

_Lock the arm after adjusting the height.

• • • o []

Hold the dust cover with both hands and fit itover the player from directly above,

--7 1

SL-1200M3D J

==Playing records

Preparation

Put a record on the turntable. Take off the stylus cover and release the arm clamp.

[] Turn [power] to turn the unit on.

•The pilot _ampcomes on.

• 33 1/3rpm is automatically selected and the indicator lights.

• Press 145]if you are playing a 45 rpm record.

[] Press [start-stop].

Theturntablestartsrevolving,

_] Lift the cue lever and move the tone arm over the

record.

LK1Lower the cue lever.

Thetonearmmovesdownandplaystarts.

When play finishes

! Liftthe cue lever end move the tone arm back tothe arm rest.

I Press [start-stop].

The electronic brake gently stops the turntable,

Turn [power]to turn the unitoff.

C_ampthe tone arm and put the styluscover back on.

] EP record

adaptor

To temporarily stop play Lift the cue lever,

The stylus liftsoff the record.

When using EP records

Takethe adaptor out of itsholder[] and fit itover the center spindle.

Press [45] to change the speed.

To light up the stylus []

• Press the stylus light switch, The light rises up and illuminates the

stylus,

• When the light is not required, press it down, The light also goes out.

Press the switch firmly. If the switch is lightly pressed, the light may come on but not rise up.

o _oo

_ght

os,ohtswtch

--8--

[] I ........

_-- LED indicator

-- Reset button

oo o o\ Strobe illuminator

oO° o

SL-1200M3D

==Adjustments while using the unit

Fine adjustment to the number of revolutions per minute.

Slide [pitch adj.] while the turntable is revolving.

Move the indicator tothe required position.

•The numbers represent approx+mate percentages.

•Pitch can be adjusted between -8% to +8%

To reset pitch to the preset value Press [reset]. The green lamp _ights and the pitch immediately returns to the set value (33 1/3or 45 rpm), regardless of any adjustments made with [pitchadj.].

Press [reset] again and pitch returns tothe adjusted value.

To measure pitch The four rows ofmetal circles around the edge of the turntable can as-

sist you in measuring pitch. They are fit by the strobo llght as they pass and each row appears to stand still at a differentpitch. Avoid usingfluorescent tight while measuring pitch. The timing will be

put out and accuracy wi!l be affected.

-- +3.3 % variation

,__-- - +6 % variation

--- Normal turntablespeed

---3.3 % variation

• . • []

Preparation

_]_ Put a record on the turntable. O Take off the stylus cover and release the arm clamp.

Use a screwdriver to turn the armlift screw.

Make this adjustmentonly if the cartridge you are using makes itneces- sary.

• Turning the screw clockwise lowers the armlift.

• Turning the screw anti-ctockwise raises the armliff.

Armlift height (the distance between the record and styluswhen the cue lever is raised) is set to between 8 and 13 millimeters at time of ship- ment.

--9

SL-1200M3D I

• Maintenance

I Care of the parts I

To clean this unit, wipe with a soft, dry cloth. If the surfaces are extremely dirty, usea soft clothdipped ina soap-and- water solution ora weak detergent solution.

• Never use alcohol, paint thinner,or benzine to clean this unit.

• Before using chemically impregnated cloth, read the instructions that came withthe cloth carefully.

Do not wipe the dust cover while playing a record. This can cause static electricity. This staticcan cause the tone arm to be attracted towards the cover.

Thoroughly clean dust off the stylus and record.

• Use a softbrush to clean the stylus.Brushfrom the base to the tip. []

• Use a good quality record cleaner to keep your records clean.

Wipe the head shell terminals occasionally []

Use a soft cloth. Turn the amplifier off before fitting or removing the

head shell.

• Damage to your speakers can occur if the head shell is moved while the volume is turned up.

• Leave the stylus cover on while handling the head shell to prevent damaging the stylus.

Oiling the center spindle. [] Apply2 or 3 dropsevery 2000 hoursof operation. Use SFW0O10 oil (not

included).

Moving the unit ]

Repackage the unit in the packaging it came in.

If you no longer have the packaging, do the following:

• Return the tone arm to the arm rest and tape itin place.

• Remove the balance weight and head shell from the tone arm and carefully wrap them,

• Take off the turntable and turntable mat and carefullywrap them.

• Carefully wrap the main unit in a blanket or paper.

• Product service

Do not attempt to remove the cover(s) or repair the unit yourself. Refer servicing to quaIified personnel only.

Product information For productservice, product informationor assistance with product oP-

eration, refer to the servicenter directory,

10--

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