Seeburg LS2 Supplement

E0

di

SEEURGiHPAR00N0HP

7I,,S A{ATUAL PROV'DES SERV'CE 'NFORMAT'ONSUPPLEMENT AL TO LSI 5ERV'CE II.IANUAL NO.

19J227, AY AILABLE AT SEEBURG D'STR'8UTORS.

SERVICEMAN UALSUPPLEMENT

IvlODEL

LS 2I'I

',

THE SEEBURG SALES

CHICAGO, ILLINOIS,CORPORATION

u.s.A.60622

MANUAL NO. 494062

SERVICE IIAIIUAL 10.21

SELECT-OMATIC PHONOGRAPH, Model LS2

- TABLE OF CONTENTS -

GcocralDcscripioo . ...

Solid State Stcrco Aoplificr, Type TSAT

Solid Statc Cmtrol Cccer, Typc SCCS

Solid &stc Auto,Spccd, TyF SAS2

Page I

Scctioo N o.

to-24

40-21

50-21

55-21

10.24 SERVICE IIANUAL

Page 2

--EEEUFIEiSELECT-O-MATIC PHONOGRAPH, Modcl LS2

- SPEC|F|CAT|ONS -

P0l{ER RIQUIR!MENTS ......,,.....,.. 120 volt, 60 HertzPhonograpb equippcd rrith SSU4 (Accecroryi)

STANDBY,.....,...,.,,., 140 w6!t8, 1.5 amps.

OPERATING 200 w.tts, 2.1 smps.

CABINET LIGHTING

Ooc (l) 30 \rst!, 36 inch cool white lluotescentlamp with oue FS4 st.rtcr.

One (l) l9 w6tt, 24 inch cool whitc fluorescentlanp with one FS25 atarter.

LID KEY NUMBER .,.,..,..,. F.205

REAR ACCE55 PANEL KEY NUT,|SER ,........... F-20s

SELECT-O.MATIC MECHANISM ............Type l605Tl7

TORI T MEIiORY UN1T ...........,......,,.. Typc I5OTMS

CONTACT BLOCX ................... Type CBI

DIGITAL 5ELECTION DISPLAY ............ Type DSD2

RECORD TYPE...... 33-1,r3 & 45 tpm., ? inch diarnete.

RECORD CAPACITY ...... 80 records (160 selections)

PlCKUP.,,.,, Convcniqat plug.tr, Btglr Conpllrncc Mu-

Metal Shielded Stercoprhorlc M.g[.ttc PlcLuE 4..sembly with two Di.nond Stylii.

PHONOGRAPH SPEAXERSTwo 12 inch, low frcquency.Two horn type, high frequcucy,

STEREO NETIIORX .......... Typc SNl0

CABINET FlNlSH ...........,....,. High pr...urr l.ni!.tc,wood grain, alumilum aad chroma triD, aluirilumgrilles finished ir bluc bakcd cnancl.

UNIvERSAL DUAL PRICING UN1T........ Typc LIDPU6

sOLID STATE STEREO AtlPLlF lEi .,........Typc TSA?

TOR^{AT ELECTRICAL 5!LECTOiTypc TES15l3-56

sOLID SIATE CONTROL CENTER ............ Typc SCCS(lncludcs thc Solid Stltc Auto Sp.!d Ulit, Typc S.{S2)

S ERVICE MANUAL t0- 24

SELECT-O-MATIC PHONOGRAPH, Model LS2

- SPECIFICAT IONS - continued

TRANSISTORSSolid Sror. Srcrco Ampli{icr

4 - 309412 (PNP)

2 - 309429 (PNP)

2 - 309430 (NPN)

r i Solid StotG Auto Spc.d UnltI - 309443 (Unijurctiou)

Solid Slot. St.pp.? Unit1- 309424 (PNP)

Page 3

l - 309434 (riPN)

r - 309435 (PNP)

l0 - 309436 (PNP)

2 - 309437 (PNP)

2 - 30944r (NPN)

I - 309442 (NPN)

l - 309425 (PNP)

FUSES Par! No.Solid State CoDtrol Center, 15 arnp' .......... (30?556)

Solid State Control Center, lX amp. ..........(764814)

Solid State Cotrtrol CeDter, l,/8 amp. ......... (319028)

Select-GMa!ic Mechanism, 5 amp. Pigtail . (2478S0)

Select.GMatic Mechaoism, % amp. Slo Blo

Pigtail ...'........(252464)

Solid State Stereo Amp,, $/10 amp. Slo Blo (306316)

Solid State Auto Speed Unit, 2 amp. (300103)

Universal Dual Pricing UDit, l-6110 amp.

Slo B1o.......... (451248)

Po\uer Jutrction Unit,6Z amp. non-tamp.

Slo Blo .......... (307830)

Solid State Stepper UEit , 3,2 amp. Slo Blo(303713)

DIIIAENsIONS AND WEIGHTS

Height ..................... 56 inches

Width..................................................40-ll,r32inchesDepth ........................,,................ . ..... 27-5l16 inches

Net Weight .............. 435 pounds

Shipping Weight .... 445 pounds

SILICON CONTROLLED STVITCH & ZENER DIODES

Solid Srorc Control Ccntorl - 309375 (Zener Diode) (2? volt)I - 309485 (Zener Diode) (150 volt)| - 309472 (Silicon Controlled Switch)

ACCESSORTES

Remole Slereo Speakers, Type TWI-8 ......................Corder Adapter, Type CAI (for TWI-8)

,.,,,.,.., 42x326

...........423352

Porr No.s12350

s02881

512351

5t2352512392

s08110

509210

3179?0509056

509830

s09840

509790

4944s0

406095

Remote Stereo Speakers, Type TCI-8................,.................

Type SCIIi-4

Remote Recordillt Income Totalizer Kit, Type RlTS4RK-56 453489

Rcmote Adapter for Recording Income Totalizer, Type RITRA52-56 .........................453456

Remote Stereo Speakers, Type TRl-8Remote Stereo Spealcers, Type EBWC2-12

Stereo Speaker Co rol, Type SI0LT-3Powered Remote Volurne Conttol, Type PRVC3............Solid State Stepper Uuit Kit, Type SSU4K..........Auriliary Power Supply Kit, Type RPSSK-S6

Slereo CoEsolettesl

Dollar Bitl Validator Kit, Type DBVIK3Dollar Bill Validatoi Moutrting Kit, Type DMK2

Doller Pre-Select Kit, Type DPK2

Quarter Prc-Select Kit, Type QPK2

"Two Quarters Equal Ore Half-Dollar" Kit .............,..........

Cash Box Inner Door Assembly

..-..--_...__... 515550

Lock Re inlorcing Chauuel ..................

.. Pot ol Soltd st.t. Conirol C.nt.r.

10. 24 S ERVICE MANU AL

Page 4 SELECT-O-MATIC PHONOGRAPH, Model LS2

32

29 30-.28

21

48

1

21

SERVICE MANUAL 10.24

Paee 5SELECT-O-MATIC PHONOGRAPtI. Model LS2

PARTS LIST FOR CABINET CABLING

Item Patt No. Descr iption Item Part No. Descr ipt ron

I 317610

961047

2 494237

309310

941804

941755

3 493365

7i0390

941804

4 317759

49 r257

960597

5 317763

960979

6 306883

7 766359

8 31775i

3177 58

9 509638

941788

10 317576

317595

307828

307829

303593

307830

960979

l1 317604

,0390941804

l2 319000

13 317852

t4 455151

15 375450

15 766369

t7 311824

l8 494244

309360

911830

309364

941829

19 317747

770391

941805

20 487435

988161

9m935

961025

21 252968

22 252031

23 304904

24 494243

309311

309312

309318

309328

309345

309354

771901

77t9li941806

941830

941839

304132

252922

3048s8

4t 1935

411937

404121

309302

9604i0

252800

41n00405138

491995950410

494321

309302

960410

494228

494224

494222

769869

9418A

493061

494101

494178

961059

494064

509513

97]122

490538

493231

252809

404253

49199s

960400

494283

493706

501522

769869

94184421414

251281

961040

620284

620282

Line Cord & Switch Assembly

&32 x % Acorn Hex Washer H.S.T. Screw

Upper Fluorescent Cable Assembly

2 Pin Cap Housing

Pin

Closed End Connector

Lower Fluorescent Cable Assembly

3 Pin Cap Housing

Pin

Countet (60 Hz.)

Counter (50 Hz.) 25

&32 xr,l Hex Washer Hd. S.T.S.

Service Sv,/itch Assembly

8-32 x ltr Hex Washer Hd. S.T.S.

SoliJ State Stereo Amplifier, Type TSAT

Line Cord

Jumper Assembly (Black)

Jumper Assembly (V/h ite)

Cable Assembly

Spade Lug

Power Junction Unit, Type PJU5

Receptacle Mounting Bracket

Receptacle (5)

Fuse Holder

Fuse Holder lrounting Clip6/r Amp. Fuse

8-32 x 1/r Hex llasher Hd. S.T.S.

Cable Assembly

3 Pin Cap Housing

Pin

Solid $ate Control Center, Type SCCS

Solid State Auto Speed Unit, Type SAS2

Universal Dual Pricing Unit, Type UoPU6

Line Cord

Line Cord

Cable Assembly (Service Sw. to SCC8)

Cable Assembly (Cab. Cable to SCCS)

12 Contact Socket Housing

Socket (10)

12 Contact Pin Housing (Green)

Pin (10)

Cdle Assembly

3 Contact Socket HousinE

Socket

Fluorescent Lamp Ballast, 30 l{.Rubber Grommet

Flatwasher

&32 x /z Her Washer Hd. S.T.S.

Cable Assembly (ilech. to SCC8 & T5A6)Se leclGMatic Mechanism, Type 1605I17

Tormat Memory Assembly, Type l60TM5

Cabinet Cable Assembly

15 Contact Pin Housing (&own)

15 Contact Saket Housing (Brown)

l5 Contact Prn Housrng fOrange)

3 Contact Socket Housing (Brown)

I Contact Socket Housing (Brorvn)

12 Contact Pin Housing (Green)

I Contact Soc ket Housing

l Contact Pin Housrng

Sicket

Socket

Pin

Cable Assembly (TlUs to SCCS)

Single Prong Plug

Cab le Assembly (Ttu15 to TES)

Matrix Cable Assembly (TES to TM5)

Contol Cable Assembly (TES to Cab. Cable)

Fluorescent Lamp, Cool [ihite, 30 W., 36 lnch.

Fluorescent Tube Socket

440 x l! Phillips Pan Hd. Scre$/

Contact Block Assembly, Type CBlTormat Electrical Selector, Type TESI6l356Fluorescent Light Starter

Starter Socket[40 xri Phillips Pan Hd. Screw

Fluolescent Lamp. Cool lVhite l9 W., 24 llchFluorescent Tube Socket

440 x % Phillips Pan Hd. Screw

Horn (2)

l2 lnch Speaker (2)

Speaker Cable Assembly

5 Cmtact Pin Housing

Pin

Digital Selection Display, Type DS02

Cable tusembly (DSD2 to CBI)Lamp Socket

&32 x 5/16 Hex Washer H. Thread Forming Sc.

lncandescent Bulb

Stereo Network, Type SNl0

No. 8 x 11 Hex Washer H. lVod Drilling Screw

Fluorescent Ballast, l9 |Y.,60 Hertz

Fiuorescent Ballast, 19 lll., 50 Hertz

Cable Assembly (CBl to DSD2)

Fluorescenl Light Starter

Starter Socket

440 x Il Phillips Pan Hd. S.T.S.

Credit Lamp Assembly

Lamp Socket Assembly (2)

No. 19 Lamp (2)

Pin Housing

Pin

Coin Srvitch & Cable Assembly

Cab le Clamp

&32 x 5/8 Hex Washr Hd. S.T.S.Adhesive Cable ClipAdhesive Cable Clip

33

26

21

29

30?1

32

34

35

.'th

37

38

39

42

43

40

41

45

46

47

48

10- 24 S ERVICE MANUAL


cotN StvtTcHEs

Iotercabinet Cabling.

cotNr, € cx AN tsllFRArlE

. OVE EOTTOiaof surTcHIN OR OUIAS iEOUIRED

. TIGHTETIscFEws

. CHECK FORFRE E OROPOF XICKEL

LOOSEITBOTIIscREws

AEiAININGTAB

cAUTtONtColn .wlrch rlrl.s ond coln .wlrch po.lrldMU5T bc chonecd wh.a.v.r o rlus r.i.doro, o dltf..onr po.r rumb.. lr u..d.D.pr.s3 rob at bolom o[ .ov.r ohd pull orfcovcr. Cloneo wi.ine tob. (rrr chon), No.wiich odiusrh.nr. o.G n.c..rory.

IN FOR NRI

SWITCH T BS

REJECTORxo.

2 3 4

421205(c^) GRN REO YEL

ho lIBLU

421205(NRI) GRX YEL REO

hollBLU

Cabinet Credit Systeo.

SERVICE MAN UAL l0- 24

Page 7

SELECT.O-MATIC PHONOGRAPH, Model L52

- OPERATION -r. INTRODUCTION

a. GeneralThis section consists of simplified diagraos of eachof the phooograph's oain funct-ions, a wiriog diagramof the cabinet fluorescent lamps aod scheoaticdiagrams of the Power Juoctioo Uoit aod the ServiceSwitch Assembly. Each of the sioplified diagraos isaccoopanied by a detailed description of the function.

b. Normal Customer PlayA customer desiriog to play a specific record selec-rion musr first deposit the appropriate aoouot ofmooey as specificd in the priciog window, Oo phooo-graphs equippe<i with a recording income totalizer, a

thank you lamp will flash as each coin is accepted,li7heo a suffic.ienr aoount of money is deposited toperoit the selectioo of a single recording, a "siogles"

credit lamp lights. This lamp illuoinates instructionsinforming ahe custo.oe. that he Eay make a "siogles"selectioo. If eoough mooey is deposited to permit theselectioo of ao "albuo" recordiog, ao "albuo"credit lamp also lights. This lamp illuoioates in-structioos ioforoing the customer that he may makeao "albuo" selectioo,

A selection is nade by depressing ooe letter buttonaod one number button. As sooo as the secqrd buttonis pressed, the ca.riaSe begins scaaniog. At the sametime the priciog rmit subtracts the appropriate nuoberof credits for the selection. If only eoough oooeywas deposited to play that selection, the credit laopcircuit is also opeoed.

Wheo the carriage a$ives at the selected reccd, itstops, transfers the record to the spindle aod theo

I---------[orue -* - ----------l

I sccS

ffi

llqqcq 9w1tp1 rqsqr- l - _ _c!ril_ su.rctl AsstlELY__atu,ounEis.4,oLEro6

NOTEr Alt cmtect8 shown with ZERO CREDIT oo phonoghph.a4 aechlnr. o .t REST POSITION.

(O\a_0

Figute 1. Sioplified Credit Systen Add Circuit.

10. 24 SERVICE MANUAL


pLays the lecord. Alter the rec6d has finished play-iog it is returned to ahe oagazine. The carriage theoresurles sca[oiog, Wheo the carriage reaches itsoriginal startiog poiot f6 the second time, the car'riage stops. This completes one cycle of operation.

2. CREDIT SYSTEM ADD CIRCUITRefer to Figure l. Vheo a coin is deposited in the

phooograph, thc weigbt of the coin closes the ap-

propriate coio switch. The coin switch in turo, com-pletes dre circuit to the approPliate solenoid. Ifeither the qtnrt.r or half dotlar solenoid is eoergized,the 5U1 contacts of the add-hold magoet vill be

mechaaically c.losed. Closiog the 5Ul contactspermits capacitor C4206 to discharge through the add-

hold oagnet, holding it energized for approximately80 oillisecoods, The add-hold magnet io tuto, me-

chanically holds the quartei or half dollar soleooid inthe energized position, This is done to allow eoough

tioe for the ctedit ratchet n,heel to rotate its requireddistance.

The serviceoaa oay add credits by holding the set-vice switch lever in the SCAN position and then

momentarily operatioS the credit svitch. Each time the

credit switch is operated, a cfucuit is coopleted tothe dime solenoid.

3. LATCH SOLENOID AND CREDIT LAMP CIRCUITWhen 10f credit is established in the phooograph, the

latch bar solenoid is energized to oechaoicallyoperate the latch bar in the elecrical selector. Thispero its the selection buttotrs to be held io the de-

pressed positioo, for tbe proper length of time, whena selectioo is oade. Also, wheo l0( credit is estab-lished, the siogle credit laop is lighted to illuoioatethe "Select Any Single" credit laop. Vhen 256 creditis established, the albua credit laop is lighted toilluminate the "Select Any Albuo" credit laop.

Vheo the coin solenoids are operated as describedin paragraph 2, the ctedit ratchet wheel rotates aodcloses the credit s*itch cootacts. If enough creditfor a single selectioo is accumulated the o[e'creditswitch contacts 7Ul close coapleting a circuit tothe latch solenoid and the siogle credit laop. Referro Figure 2, The cooplete circuit is as follovs: Frouthe 24-volt a.c. source in the Solid State CoorolCenter thtough the 15 ampere fuse, the cabinet cableassembly, the coin switch asseobly, the 3U21 con-

tacts, the 7Ul cootacts, pia 2 ot J420O aod P34O2 toboth the Latch soleooid aod the siogle credit laop.The other side of the credit lamp is connected toground, The latch soleooid is coooected to grouod

through the lBl contacts of the oanual credit svitch.

t-- -:-:**--:----'lCOIN SWIICII ASSEI'BLY i

L -------- -----r

L c!E!lr,Llrts_ __

--- -- -T

-JSERVICE SWITCH ASS E lr.l

NoTE: Atl c dtects 3 hown w tth Z ERO C REDIT on P hoaosraph snd m echsnbm 3t REST POSITION.

Figure 2. Simplified Latch Solenoid and Credit Lamp Circuit.

dL----------J

ro. ii !r I I (6^ i^ r)

SE RVICE M ANU AL t0- 24

Page 9

4. SUBTRACT CIRCUIT

After credit has beeo established and the desiredselector buttoos pressed, the phooograph must per-fctm several functions. These are (1) mechanicallysubract the approp,riate ouober of credits ftoo thecred.it ratchet wheel, (2) atalt the scao operation, (3)

fcon=swricr


*siuaLr I

trigger the vrite-in pulse, (4) impulse the selectioncounter and (5) eoergize the tioing relay' These

functions are accooplished by energiziag the sub-

tract soleooid as described in the followiog para'graphs. Refer to Figute J. Since these qrerationsmusr occur io a given sequeoce, the tioing relay isenergized by the subtract solenoid to insure proper

timing of the operations.

l

L

sccB

I

L -ILU J

NOTE: AU conts.t6 .hoE wtrh ZERO CREDIT on phonograph and mechaolsm at REST POSIIION'

UDPU6

TES r6r3

Figure 3. Simplified Siogle and Albuo Subract Circuit.

l0- 24 SERVICE MAI{U AL

Page 10

a. Sirgle Subracr Circuit


Assuoe credit has beeo established for a singleselection aod a selection has beeo oade, i.e., a

letter buttoo and a ouober buttoo are pressed in. Acircuit to the subtract soleaoid is cmpleted froo the24-vok a.c. source in the SCC8, through the coinswitch asseobly into the UDPU6, through juoper plugP4200 aod the 9U1 cootacts, through the fuse aod thc

3U1l cootacts to the subract soleooid. FroE thesubttact solenoid, a grouod path is completed through

the 7U2 contacts which are now closed, tbe 3Sl coo-tacas, the 2S1 cootacts which ate closed aod eitherthe 1Sl or 4Sl contacts depeodiag oa the selectionoade.

b. Album Subract CireuitVheo an album selectioo is oade, the shift soleooidmust be operated before the subtract soleooid. As-suoe ctedit has been established for an album selec-tion aad ao albuo selectioa has beea oade, i,e., aletter buttoo aod a ouober buttoo are ptessed io. A

c8iSTI

-.lUDPU6

rtaooB RiI

'

J(

casri alCAEL'

P3402!-srETES co^n..l..ilh.. ro,h. TirU or ri. SSU4. f

I

I

t;tara

OPERATEO 8Y

lsr DA < !s2

f

LU.u. l []LS16l3NOTE: Atl cont.cb lhosn wlth ZERO CREDE on phonograph a;d tncctrn!.tn .t REST POSITION.

HOIO

1u,la__J I. r____,

Figue 4. Sioplified Tioing Relay Circuit.

SE RVICE MANU AL 10. 24

SELECT-O-MATIC PHONOGRAPH, Model LS2 Page llcircuit to the shift soleooid is coopleted koa the 24-

volt supply in theSCCS, through the coio switch as-sembly, into the UDPU6, through the jumper plugP4200 a . the 9Ul contacts, th.ough the fuse aad the

3U11 coatacts to tbe shift solenoid and the subtractsoleooid. The subtract solenoid will oot eoergize be-cause the 3S1 cootacts in the ground side of tbe sub-tract solenoid have been opeoed by operatioo of thepriciog treadle bar. A grouod circuit to the shiftsoleooid is completed through the 8U2 contacrs whichare now closed, the lS2 coatacts, the 2Sl cootacrsand either the 1Sl or 4Sl cootacts depeodiog on rheselection made.

lT-iceF'IC3

Vheo the shift solenoid eoergizes, it closes the 2Ulcontacts which cooplete a ground circuit to the sub-tract solenoid eoergizing it. The shift soleooid alsoalters the approach of rhe subrracr pawl so it is in aposition to subtract enough credits for an albumselection,

c. Tirning Relay Circui tThe tining relay controls the sequence of events byde-energizing the subtract, shift aod latch solenoidsat the appropriate time, The timiog relay also servesto protect the customer or the phonograph if (1) selec-tions are attempted with insufficient credit or while

-lJ3tO2(YEL)

NOTE: Arr contacts Bhowo wlth mechsi.m .t REST POSITION.

Figure 5. Sinplified Play Control and Couoter Assembly Circuit.

UDPUo l

I

__lrsosrrl

J!lo3

6

i srfvrcr sirrtcH nssrusLY

o-------j 2a2*fo----+'

I

EEa

l0- 24 SERVICE MAI.I UAL

Page 12SELECT-O-MATIC PHONOGRAPH, Model LS2

coios are be.ing deposited or (2) the customer failsto release ahe selector keys after makiog a selec-tion.

The timing relay is eoergized after the subtractsolenoid has energized. Refer to Figure 4. The +40d.c. source io the SCCS is coooected directly ao thetiming relay via pin 10 ot J4201. A ground path iscompleted through R4203, contacts 4U1 and pio 1 of

J 4201 ard J )104 .

Vhen tbe timiog lelay eoergizes, it closes the 3U1cootacts which cooplete ao alternate ground pathholding itself energized through the letter andnumber hold switches (1S2, 2S2, 4S2). The timingrelay then reoains ent'rgized as loug as any letteror oumber button i. heid down.

d, Play Control anrl flounter t,ircuitsThe play control asseebly ccnltols tbe number .:rf

tioes the carriage is allowed to scan b;rck and forthon the tuechanism base. The counrer assemblycounts the numbel of selectior!-r maCe on the phono-

Sraph and is coonected in parallel with the add

solerloid of the play conrol assembly. Refer toFigure 5. The add soleooid of the play controlassembly recei.ves its voltage from the 24-volt a,c.supply in the SCC8. The ground side of the addsolenoid is connected to pio 1 of the serviceswitch via pio 3 of J3102 and P3000. The couaterassembly receives its voltage from the same sourcevia pin 9 of J3102 and P1000. Its ground side isconoected to pin 1 of the service sw-itch. Both p-io Iaod pin 3 a.e conoected to pin 12 which is con-nected to ground via the 4U2 cootacts of the sub-tract solenoid in the UDPU6.

Vhen a selectioo is made, the subtract soleooid iothe UDPU6 is eoergized closiog the 4U2 contacts.This energizes dre add solenoid io the play conrolassembly and the counter assembly. Each time theadd solenoid is energized, it mechanically closes a

step switch which completes a circuit to the Eech-anism ootot causiog the carr.iage to begin scanoing.This switch can oaly be opeoed by pulsing the sub-tract soleqoid ia tbc SCC8.\rice.

The subtract soleooid oay be eaergized auto-matically through a play cooaol subrract switch iothe 1605T17 or manually by usiog the oaaual creditsvitch oo the service switch asseEbly. The playcontlol subtract switch is oounted oo the front ofthe carriage asseobly aod ooves vith it. Each tiEethe carriage asseobly oeals the right side of themechaniso base, a roller oD the play cootrol sub-tract switch meets with a statiooary raop mouotedon the mechanism base. As the carriage asseoblymoves dearer dre right end of the base, the roller

rDoves up the ramp and closes the 8Ml contactswhich cooplete a circuit to the play control sub-tract solenoid. The raop is positioned so the cat-riage will reverse direcrion before the 8M1 contactsare allowed to open. Since it takes two pulses ofthe subtract solenoid to open the 6otor circuit, thecarriage must scan back and forth tvice.

The subtract solenoid may be energized maauallyby placing the service switch lever in the OFFposition and operaaing the manual credit buttootwice, Each time the credit button is operated, a

ground cfucuit to the subtract solenoid is complered.This circuit is from the ground side of the subtractsoleooid, through pio 4 ot J3102 and P1000 to pin 6of rhe service switch. Vheo the service switchlever is in the OFF position, pins 5 and 6 are

shorted together. Pio 5 is coonected to gtound viathe 182 contacts of the oanual credit buttoo aod pinI of PJ000 and Jll02.5. SELECTION SYSTEMa. GeneralThis selection system uses toroidal shaped mag-

netic cores (toroids) of magnesium ferrite as thestorage eleoents. There are one huo&ed aod sixtycores - oae for each record side - arranged io an

electrical matrix and housed io the Tormat MemoryUnit. This uoit, the elecrrical selector, the oech-aniso cootrol circuits, a contact pluoger block on

the mechanism carriage aod the associated elec-trooic circuits cooprise the seleclion systeE,

The toroids are ,uranSed io the oemory unit in tworows of eighty each. They are spaced so there isone toroid io each row at each oagazine recordspace. Each toroid has four rrires threaded throughit; two are part of the selectioo ioput circuit (write-in), ooe is part of the output circuit (readout) aodone is part of a sensing circuit. Refer to Figure 6.

IIUIBERwtrTE-til

TO SCCas Ei{st GCIRCUIT

iElo-ot T

Figure 6. Sioplified Toroid Circuit.

SE RVICE MANUAL 10- 24

Page 13SELECT-O-MATIC PHONOGRAPH, Model LS2

The writein circuits terminate in a l(-pin Plug, thereadout circuits tetoinate in 80 rivets oo the bottom

of the memory unit and the seosing circuit ter'mioates in a single prong coooector which plugs

ioto tbe tlip circuit on the Solid State Control Ceotet.

Each toroid has two normal states of oaSoetizationin which the residual oagnetic flux is in either theclockwise or counterclockwise direction. Ooe of

rhese states is called zero or no-selectioo; the

othe. is the selected state. If uodisturbed by amagoetic field, they will retain, idefinitely, eitherstate.

b. Write-in CireuitThe tri'rent pulse and the resultaot magnetic fieldthat passes through a toroid must exceed a ctiticaldensity or streogth before the toroid changes state.A magnetic field less thao the critical value has oo

sigoificaot effect on the totoid. This behaviormakes it possible to afange the toroids in a oolrirthat greatly simplifies dte writein circuits andwritein switching.

Figure 7 shows the oaarix, circuits and switches

associated witb the writeio opeiatior. The circlesat the points of intersection of the letter andoumber circuits represeot the toroids. Aoy toroidmay be identified in refereoce to the selectionnumbering system of the phooograph by using theletter aod number circuits that iotersect io thattoroid. (Example: Toroid 82 is at the intersectionof circuits B and 2).

In Figue 7, selectioo [}2 is showo operated. It caobe seeo that wheo the trigger switch is closed, apulse of current is fed through all the toroids in thenuober 2 rov. Froo the nudber 2 row, the pulseenters the letter circu.it aod, since the B switch isclosed, through al.[ the toroids in the B row, One

toroid, 82, has dreo beea pulsed by a magnetic fieldtw.ice as strong as any other toroid.

The current pulse is regulated io the Solid StateControl Center so the curreot throuSh a siogle wiedoes not produce a magnetic field that exceeds thecritical strength required to select a toroid. Thismeans that eveu though a vritein pulse is fedthrough a toroid, the toroid will not be selected un-less two circuits are coopleted through it.

l0- 24 SERVIC E I\IANUAL

Page 14

WRITE.INTR IGGERSWITCH

SELECT-O-MATIC PIIONOGRAPH. Mode I I-S2

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Figure 7. Simplified Memory Unir Diagrarn.

S ERVIC E IIANUAL t0- 24

SELECT-O-MATIC PHONOGRAPH, Model L52 Page 15

Figure 8 shows rhe writein circuit that is used to generate the electrical pulse that "selects" a toroid. The

1Ul contact of the subtract soleooid in the UDPU6 is the ttigger switcb that provides a discharge path forthe writein capacitor, C1114. The lerter and nuober switches direct the pulse to the appropriate toroid.

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Figure 8. Simplified Vtitein Circuit.

1n-1n SERVICE MANUAL


c. Readout CircuitVhen the selection ioformatioa that has beeo writteninto a oemory unit totoid is to be used for controlof the mechanism, a pulse of curreot is Passedtlrough aoother wire that is threaded through thetoroid. Refer to Figure 9, This current is of the op-posite phase with respect to the writein current andproduces a oagnetic field that testores dre totoidto the zero state, This process is called "readout"aod the associated circuit is the readout circuit-The term is used aod applies whether the state of

ttccs

the toroid is or is oot changed. If a totoid is io thezero state, no change will occur when rhe cttrent ispassed through the circuit,

As the catriage scaos, the readout circuit testseach roroid in sequeoce to determine if its cot-responding record side has been selected. Theoperation is physically correlated with the recordsides because the mechaoiso trip operation occursat the Doment of readout of a selected toroid.Physical cortelation is accomplished through the

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Figure 9. Sinptified Readout Circuit.

SERVICE I\,! AN UAL 10.2{

SELECT-o-MATIC PHONOGRAPH. Model LS2 Page l7

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use of a cootact plunger block oo the carriage as-sembly and the readout circuit contacts oo thebottom of the Tamat Memory Uoit.

d. Sensing and Trip Relay CircuitThe sensiog circuit cons.ists of a loop of wirethreaded through the toroids in the Tormat MemoryUoit aod terminated at the trip circuit in the SCC8.Refer to Figure 10. If a toroid is in the selectedstate vhen a readout pulse is passed tbrough it, thetoroid changes state. This change is detected iothe seose loop as a l-volt pulse which is feddirectly to the trip circuit in the SCCS (J3106). The3-volt pulse causes silicon coottolled switchSCSI101 to begin conducting. This causes the triprelay to eaergize closing a pair of cootacts thatcomplete a circuit to the rip soleooid io the160sT17.

e. Trip Solenoid CircuitThe trip solenoid, if eoergized duriog a scan cycle,causes the oechaoism to detent and play a selec-tioo. Refer to Figure 11. This circuit is completedthrough the 2M1 cootacts of the clutch switch andlE12 cootacts of the trip relay, The clutch switchoperates immediately opeoing the 2Ml cootacts andde-eoergiziog the trip solenoid.

NOTE: AU contactB 3hown wtth the mechaniso tn RESI' PoSITION.

Figure 10. S.implified Sensiog and Trip Relay Circuir.

At the eod of play, the 4M1 contacts of the ripsvitch complete a path to the mute-trip relay in theTSA7. Men rhe mute-rip relay eoergizes, a circuit.is completed to the trip solenoid througb the lM12contacts of the cato switch. Energizing the tripsolenoid causes the clutch switch to operate whichresults in the mechanism returning to the scaocycle,

f. Mechanism Motor Power CircuitThis circuit provides 120 volts a.c. at 60 Hertz tothe play motor for both scao and 45 rpm. record playand 95 volts a.c. at 44 Hertz to the play motor for31-l/3 tpn. record play.

Refer to Figure 12. During the scao operarioD aod4! rpm. record play, the lioe voltage is applieddiectly to the play ootor via rhe 2E2 cooracrs ofthe play control assembly add contacts 142 andlA12 of the power relay. When

^ 13-l/3 rpo. recordis placed oo the tumtable, the pover relay in theSAS2 is eoergized. The circuit betweeo the play6otor and the line voltage is then opeoed and acircuit froo the 44 Hertz power co[verte. to theplay ootor is completed.

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10- 24 SERVIC E MANUAL

r scct------lPage l8 SELECT-O-MATIC PHONOGRAPH, Model LS2

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SERVICE MANUAL 10- 24

Page l9SELECT-O-MATIC PHONOGRAPH, Model LS2

Figute 13. Service Switch Assembly.

6. ACCESSORIESa. Quarrer Pre-Select Kir Model QPKzThe Quarter Pre-select Kit consists of I relays, (see Figure 14) with their associared viring. It isdesigoed for easy mounting io tbe space provided in the UDPU6. The Switch Panel, (see Figure 15)is oounted oo the cabinet lid. Vith this kit iostalled, rhe custooer is given the opportuniry todeposit one quarter ard select thtee record sides by pressing only one button. If the phooograph isadjusted to play two tuoes for a quarter, use of the Quarter Pre-select will give the cusromei a bolusof one selection. The two groups of records available are A6, C6 and E6 or A7, C7 aod E7. SeeFigutes 16 aod 17 for simplified diagrams.

s3001

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Figure 14. Relay Assembly. Figure 15, Svitch Asseobly.

10. 24 SERVIC E MANUAL


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SERVICE MANUAL l0- 24

SELECT-GMATIC PHONOGRAPH, Model LS2 Pap 21

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SERVICE MANUAL I0.24


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Figure 19. Sioplified Dollar Pre-select Selectioa Control Circuits.

10. 24 SERVICE MANUAL


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RtGtsitRL__ji:lil t' ___lOT E:

I. PRE.SELECT PLAYS ONLY LEFT SIDES OF RECOROS.

2. PRE.SELECT OF ALBUMS ENERGIZES ONLY THE ALBUM RELAY.

3. PRE-SELECT OF SINGLES ENERGIZES BOTH THE SINCLES AND THE ALBUM RELAY.

4. PRE-SELECT REGISTER SETTINGS -5 oR 15 - pLAys FtRsT 5 2,s oR s,s ANo FtRsr FtvE 7,s,5 oR t2 - pLAys FtRsT 6 2rs oR 6,s aNo FtRsr rwo 7,s,6 OR IE - PLAYS FIRST 6 2'S OR 6'5 AND EIRST EIGHT 7'5.7 OR l4 - pLAyS FTRST 7 2'S OR 6,5 At,tO FIRST FOUR 7'S,a oR 16 - pLAys FtRsT 8 2,s oR 6,s aND FtRsT stx 7's.

Figure 20. Simplified Dollar Pre-select Vlite Io Circuit.

b. Dollar Pre-select Kit Model DPK2

The Dollat Pre-select Kit, consisting of 4 telays aod a switch panel, features oultiple selectioo of singleor album recotds. This kit oay be used only when a Dollar Bill Validator is installed.

L_01t1l60Tlil5


r. GENERALThe Solid State Stereo Anplifier, Type TSA7, isa fully ttansistotized, dual chanoel, low dis-tortion, high fidelity amplifiet with a power out-put of 40 watts pe! channel. A special featureof this amplifier is the speaker overload pro-tectioo circuit. This citcuit contioually 6onitorsthe output curreot. If the output cuffeot in-creases to a level that may daoage the aopli-fier, the speaLer overload protection circuit cutsoff the ioput to the aoplifier.

The aoplifier also contains circuits for treble,bass aod lecord sciatch competrsation. These

controls enable the output to be varied to fitthe custooers need.

2. CIRCUIT DESCRIPTION

For purposes of discussioo, the audio sigaalwill be traced ooly through the tight chaooel.Refer to the Schematic Diagram,

Page I

a. PrearnplifierThe preaoplifier circuit consists of fourtransistor stages, Q5101, Q5102, Q5103and

Qr104. Traosistors Q5101 aod Q5102 ate partof a preaoplifier with ao equalization oet-worl that provides RIAA record co[rpensa-tion. Audio signals from the pickup cartridgeare coupled to the base of Q5101 where fieyate aoplified aod coupled to the base ofQ5102. Pat of the output of Q5102 is fedback to the eoitter of Q5101.

A low frequency coupliog oetwork R5102 aadL5101 is coaoected from the collector ofa sioilar circuit io the left chaonel. Uo-desirable low frequency sigoals ate theocoupled togethet in an out of phase conditiooeffectively cancelliog the6 out.

The reoaining ourpur froo Q!102 is capaci-tively coupled to the base of voltage ampli-

SOLID STATE STEREO AMPLIFIER, Type TSAT

Figure l. Solid State Stereo Aoplifier, Type TSA7.

1@,!3

a

40- 24 SERVICE MANUAL

b.

Page 2SOLID STATE STEREO AMPLIFIER, Type TSAT

fier Q5103. Traosistors Q!l0l and Q5104 are

conoected ia a Darlingtoo configurar.ionwhich is characterized by a high input io-pedance and a low ouqrut iopedaoce. Theouqrut of Q5f04 is thea coupled to the AVCcircuit, the TREBLE, BASS aod VOLUMEcontrols and the predriver stage.

AVC CircuitA saopliog of tbe output of Q5104 is coupledthrough C5105 to tbe base of Q5105. The

output ftoo the collector of Q5105 is recti-fie<i by diode CR5l06 creating a d.c. voltage.This voltage varies with the average ampli-tude of tbe sigaal voltage applied to Q5105.This varyiog d.c, voltage is directly coupled

to the ceoter of dual diode CRif05. If a

large sigoal voltage is coupled to Q5105,ttren a large d.c. signal is coupled to diodesCR5l04 and CR5105. Ttis large signalforwatd biases the diodes effectively de-

creasing their resistance. As the resistancedecreases, oore of the signal voltage at the

base of Q5103 is shunted to grouod effec-tively decreasiog the input signal to Q510i.

Treble, Base, Volume and Gain Set ControlsThe TREBLE aod BASS controls are in paral-lel with the output froo Q5104. The TREBLEcontrol varies the amount of high frequenciesfed through the VOLUME concol to the pre-

driver stage, Q5106. The BASS coorol variesthe aoount of low frequencies fed to Q5106.The VOLUME control varies the aoouot ofdrive to the base of Q5106. The individualGaio Set Cootrols compeosate for gaindifferences of the voltage aoplifier and,/orpo*,er amplifier. It is also used to balancetbe systeD.

Predriver, Driver and Power 4nplifier Stages

The ouput hoo the VOLUME cootrol iscapacirively coupled to the base of ptedriverstage Q5106. The ouput of Q5106 feeds thebases of driver stages Q5107 aod Q5f08.Power aoplifier stages Q5109 and Q5110 are

operated io a complioeotary synroetry coo-

figuratioo which produces tle power requiredto drive the output uansformer, T5102.

Shori Circuit Protectior CircuitThis citcuit prevents aoplifiet damage due

to sbort circuits, ovetloads ot iocoEcct con'

nections io the speaket systeo. If a coodi-tioo occurs in the speaker systeE that tlayresult ia daoage to the aoplifier, the shortcircuit protection citcuit biases the inPuttransistots ioto cut-off.

Refer to Schemtic Diagrao. The outputcurent is oooitored by oeasuriog the voltage

across eoitter resistor R5128. As the curentthrough R5128 increases, capacitot C5122

charges in tie polatity shown. Fot aoy

particular tioe period the potential reached

is only a fraction of the potential at the

eDirter resistor due to the time coostaotdeteroined by DELAY TIME poteotiooeterR5141A aad the voltage divider consistingof R5f36 and R5137. If the cutrent through

R5128 increases eaough, capacitor C5122

will charge to a potential that results in the

conductioo of Q!111. Vhen Q5lll conductsits collector cutrent forvard biases Q5112causing Q5112 to conduct. Due to feedback

betweea the Eaosistors, both Q5fll aod

Q5112 santrate and becooe indepeadent ofc5122.

Vheo Q5112 saturates, tie potention oo thecollector rises froo -20 volts to oea! zeto.This change in poteotial is coupled through

R5130 to 6e forward bias CR5l02, thereby

reduciog the collector voltage of Q5101 inthe Pre-Aoplifier to p.actically zeto. Thiscuts off the first stage of the Pre-Anplifietpreventiog any furthet signal from pass.ing

tluough the aoplifier. Sioce the powetaoplifier stages a.e operati.oS oear class B,no input results io very little curretrt flow.

Mute RelayThe oute relay (K5101) is used to quiet the

aoplifier befote record trarsfer takes placeto avoid uopleasaot ooise in the output. The

relay is eoergized q,heoevet the trip switchio the Select-O-Matic Mechaniso is closed.A holding circuit for the mute relay is coo-pleted through contacts 3M1l of the caoswitch in the oechaoiso, These cootacts are

closed wben the oechaniso is io the &aos-fer ot scao p6sitioo.

d.


SOLID STATE STEREO AMPLIFIER, Type TSAT?ale !

Wheo the oute relay is energized, contacts1A11 close completing a circuit to the ttipsolenoid io the oechanism, Cootacts 1A1

and 1A2l close to mute the aoplifier. Coo-

tacts 1A1 grouod the audio signal ftoo tietop of the right chanael voluoe contol. Coo-

tacts lA21 grouod the audio signal ftoo the

top of the left chaonel volume coorol.

Vhen cootacts 1A12 open, the grouod circuitto dual diode CR5106 is opeoed. This allowscapacitors C5120 and C5121 to charge in the

direction indicated q,hich tesults in diodesCR5t04 aod CR5l05 beiag forwatd biased.Forvatd biasing diode CR5104 aod CR5l05gtounds the input s ignal to the base of the

aoplifier stage (Q5103) through C5103. Wheo

the Eute relay is de-energized and cootacts1A12 close, capacitor C5121 dischargesslowly through R5132. This results io a

slow unmutiog of the aoplifier rather than asharp returo to ousic.

3. ADJUSTII'ENTS AND MAINTENANCEa. Short Circuit Protection Circuit Adjustment

The dual DELAY TIME potentiooeter is used

ro adjust the short circuit protectioo circuit.This conrol is preset at the factory aodnoroally does oot tequire further adjustment.If ho*,ever, adiustaent does becooe oeces-

sary, a pulse test record, Seeburg Patt No.25L44 is required. This 7 ioch 45 tpo. re-

cotd includes verbal iostructioos fot adiust-ing the DELAY TIME potentiooeter.

NOTE'APPLY SILICOII E GREASE TOCLOYH SIDES OF I'ICA WASHEREEFORE REPLACING CH SSIS.

Figure 2.

b. Driver Transistor ReplacementIf the drivet transistors, Qrl07, Q5108,Q5113 or Q5114, need to be replaced, theyEust be oounted as shown in Figure 2. Besure boti sides of the oica washer arecoated c,ith silicooe grease.

c. Bias Adjuetrnent for Output TransistorsThe bias adiustment potentiometer locatedio the coroer of each voltage amplifierprinted circuit board is used to ptoperly ad-just bias oa the output traosistors. This ad-justruent ehould not be touched unlesscomponenta in the Predriver, Driver orOutput Stages are changed. For proper ad-

iusmeot of bias see Note No,9 oo thescheoatic diagrao,

40- 24 SERVICE MANUAL

Page 4 SOLID STATE STEREO AMPLIFIER, Type TSAT

swrTcH

Figure 3. Voltage Aoplifier Control Circuit Board.

MUTE.IRIP OUTPUT TRAXS. OIJTPUI TRANS.RELAY (L.fi cnoin.r) {Rrlhi ch.i^.|)

Figute 4. Parts Location Detail - Bottom View.

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SERVICE MANUAL 40- 24

Page 5SOLID STATE STEREO AMPLIFIER, TyPe TSAT

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40-24 SE RVIC E MANUAL

Page 6 SOLID STATE STEREO AMPLIFIER, Type TSAT

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SERVICE MANUAL 50-24

SOLID STATE CONTROL CENTER, Type SCCS

Figure l. Solid State Control Center, Type SCC8.

P4e I

POWER TRANSFORMER(t3lot )

All connections between the SCC8 and otheruoits within the phonograph cabioet are oadewith plugs that are keyed by colot and/oroumber of contacts so they cannot be incorrectlyconoected.

ADJUSTMENTSa. Trip Relay Contacts (refer to Figure 2)

i. Adiust the armature as required to obtaio al/16 inch clearance betweeo the aroatureand the aroature back stop when the relayis energized.

2. Form the short blades as requfued to ob-taio a contact gap of 0,020 inch.

SCLIO STATEAUIO SPEEO

TYPE SAS2

GENERALThe Solid State Cootrol Ceoter is a powerfistribution center and a junction unit for con-trol circuits of the cooplete phonograph. Thecodrol ceoter iocludes a power supply, a playcoouol assembly, write-io, read-out aod seosingcircuits. The po*rer supply cooverts 120 voltsa.c. into the various voltaSes needed to operatethe iadividual chassis. The play control as-seably starts the scanoing operation of theDechanism carriage and the! stoPs the cartiageafrer rwo complete cycles. The write-io circuitprovides the necessary curiept for making aselection. The read-out and sensiog circuitsprovide the oecessary voltage for stoppiag theEechaniso at the selected record during a scaooperatioo.

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50.24 SERVICE MANUAL

Page 2

CONTROL BOARDASSEMBLY

SOLID STATE CONTROL CENTER, Type SCC8

ARMA TU RE

Figure 2. Trip Relay Detail.

3. Check fot a ooe ounce contact force on

each pait of contacts. If there is less thanooe ouoce of force, teplace the blades.

5.

K3I03 TR IP RELAYR 0.Di.obt. S.l.c, xi, R.roy hord(lEtl- ror.rX,EI?-upD.r ) (lEl)

2Er

Figure 4. Play Coatol Svitch Detail.

b. Play Control Swirch Conracrsl. Unplug the Type SCCS Solid State Control

Center from the power iuoctioo bor.

2. Press andrelease the add solenoid plunger.(Refer to F igure 3 fot the location of thesolenoid).

3, Press and release the subrract solenoidplunger.

4. Press and hold the subtract solenoidplunger.

Adlust the two loog blades so they are

iust touching the rip of the ratchet wheel.Refer to Figure 4.

Release the subtract soleooid pluoger.

Adfust the short blades for 0.020 and 0.010inch contact gap.

6.

7.

K3tO2 S3tOtSUATRACI Sco^ co.trol Audio conlrotsorENoro \2E2t (2Et)

scs3ror

F 3lO2

FSrOr

Rf,II7

c3 4

Figure 3.Parts Location Detail

Bottom View.

9

SERVICE MANUAT- 50- 24

Page 3

DRAWING NO. 3I9O3OSOLID STATE CONTROL CENTER, Type SCC8

F 3lOJts a-

J 9/03(a.6)

T E 3tol--llr.,rr't

Itrl,E trll*lE-E I

le sr s[le-q E,l

I n:ror conrn.r oonas nssemerv

I

I cnttog R3IOZ r3rol

| 6-f+-fffi--in^v

c!roz c3t03

J3/d/,tro

P3tOlAU10 SPItD

Nnmt lLu6 ^!5ts!t!IrHrl

-

ALL PLUGS AND SOCKETS VIEWEOFROM WTREO SIDE ANO ARE PRO -JECTED IN THIS MANNER.

B 3103r50\

fli104

g20x

I ao v- i.cIN9UI

J3/o5JT€P'IR(r4,/ ) i

_l

.IABLE T

{ sEE Ho'rE N. +)

I ccc-q -lI 5cca-5 I

I sccat I

I !cc9lr! I

zaior-l-.IL I r ztot

Al ) @J-D | *xs.t/ao

PR]Nf ED CIRCUIT BOARb DESIENATIOXS

50.24 SERVICE MAI{UAL

Page 4SOLID STATE CONTROL CENTER, Type SCCS

A3101 319021

c3101 87749

c3102 87749

c3103 86290

c3104 8686c3105 86313

c31ffi 85313

c3107 86278

c3r08 86250

c3109 86367

c3ll0 85317

c3lll 86313

c3ll2 86313

c3ll3 87511

c3t14 87725

cR3lol 309476

cR3l02 309475

cR3l03 309476

cR3l04 309476

cR3l05 309372

cR3106 309372

cR3l07 309485

cR3l08 309375

cR3109 309384

F3101 319028

F3i02 764814

F3103 307556

J 3101 710315

J 3102 710531

J 3103 309343

J 3104 309361

J 3105 309360

I3106 303446

J 3107 318101

Control Board Asembly

15 Mfd. 250 V. Lytic15 Mfd. 250 V. Lytic.047 Mfd. 600 V. Molded Mylar

.15 Mfd. 600 V. l\,lolded Mylar

.01 Mfd. 500 V. Ceramic


3000 Pfd. 566 Y. 611111.

5000 Pfd. 500 V. Cerarttic

l Mfd. 200 V. llletal luylar


.01 MId. 500 V. Ceramic


300 Mfd. 50 V. Lytic1000 Mfd. 35 V. Lytic

Silicon Dide 100 V.

Silicon Dide 100 V.

Silicon Dide 100 V.

Silicon Dide 100 V.

Silicon Dide 6ffi V.

Silicon oiode 600 V.

Zener Diode 150 V. I Y{. 5%

Zener Dide 21 v. 10 $1. 10%

Silicon Dide 170 V.

V8 Amp Fuse

1ll Amp Fuse

15 Amp Ftse




l2 Contact Socket Housing

l2 Contact Socket Housing

Single Prong Phono Socket

15 Position Edge Connector

K3l0l 303482 Add Solenoid

K3102 303484 Subtract Sotenoid

K3103 317024 Re lay

L3l0l 303603 130 Microhenry Choke 5%

13102 30y02 100 Microtnnry Choke 5%

P3101 3U957 Auto Speed Dummy Plug Assem.

R3101 82460 l Megohm }{ lt. l0%

R3102 82460 I Megohrn l, ll,. l0%

R3103 82880 150,000 ohm l.tv. l0%R3104 824ss 820,000 ohm ll tV. 10%

R3105 82837 56,000 Ohm 2lY. 10%

R3106 308971 36 Ohm % l{. 5%

R3107 82432 4700 Ohm I l{. l0%

R3108 82617 47 Ohm )4 trI. 5%

R3109 82155 27 0hnkV.5%R3110 82462 1.5 trlegohm I l{. lt]%

R31ll 82517 41 Ohn k W.570

R3ll2 82655 130 Ohm ]4 W.5%

R3113 82658 2N lhn lz W.5%

R3ll4 82661 910 Ohm )l t{. 5%

R3115 82881 25,il0 Ohm M.F.5lY. 10%

R3116 8287 4 33,000 Ohm 2 l{. i0%

S3101 303481 Play Control Switch

SCS3l0l 309472 Silicon Control Srvitch

T3l0l 311924 Power Transformer 60 Hertz* T3101 311925 Power Transformer 50 Hertz

W3l0l 766363 Line Cad & Ph8 Assembly

23101 303464 Play Cofltrol Assembly

* For 50 Hertz Units, use a lternate componenls marked with

an asterisk.

SERVICE MAI'IUAL 55-2{

PaSe ISOLID STATE AUTO SPEED UNIT. Typc SAS2

r. GENERALThe Solid State Auto SPeed Unit, Type SAS2

provides 44 cycles, 95 volts square wave out-put to the Select-O-Matic Mechauiso Motorttheo 13-l/3 rpo. records are played. The Auto

Speed Unit consists of a unijuoction oscillatorwith a speed conEol, ao emittet follower rypebufier stage, a free tunoiag iovertet aod a

power telay. Power for the Auto SPeed Uoit issupplied by the Solid State Control Ceoter tovhich it is coooected.

2. OPERATIONa. Switching CircuilNhell a 11-l/3 rpIn, record is transferred toplay position, the claop ato srritch (6M1)

closes to provide a ground path from the

reset leve. switch (2Mll) which is closed,through the cao svitch (3M16), vhich is alsoclosed, to pin 3 of Plug P1100, through the

Solid State Coottol Center to pin I of the

Auto Speed plug P2101. This causes thepo{,et relay K2101 to energize.

T-- - -;€cr..; --l

x2101 ayro 9P€EL )

Energizing the power relay, svitches theoechaniso ootor froo the 120 V,60 cyclelioe to the 95 Y , 44 cycle ouput of the AutoSpeed.

b. Oscillating CircuitThe uoilunction oscillatot ptoduces positivepulses at a repetitioo rate of 89 pulses persecond. This rate can be changed by adiust-ing the speed contiol (R2102). This changesthe charge tioe of C2101. The output oi the

unijunctioo oscillator is used to drive fteerunning inverter at the desited frequency of44.5 cycles. The ouaput is a square wave.

3. Adjustmertsa. FrequencyThe desired frequency for a turotable speedof )1-1/1 rpm. is approximately 44.5 cyclesand is checked by using a strobe disc oo thetumtable. For 60 cycle operation, the paitouober of the strobe disc to be used is!08487. For 50 cycle operatioo, the partouober of the strobe disc to be used is,08478.

The adjustmeat is oade as follovs:

l. Replace a record with the appropriate autospeed strobe disc. The light source fre-queocy tnust conforo to the &equency in-dicated on the strobe disc.

2. Press the appropriate ouEber aod letterbutton which selects the srobe disc oo tothe oechaniso turntable.

3. Carefully prop the pickup aro out of the way.

4. Allow the unit to nm approximately three

oioutes.

5. Set the ootor speed to 33-l /3 rpo. by adjust-iog the SPEED coorol on the auto,speeduoit so that the inoer and outer bands o the

strobe disc oove in opposite ditections.

6. Reoove the strobe disc and replace thcre cord -

RESE'LEVER

L

Figure 1. Simplified Switchiog Circuits.

55. 2l SERVICE IIAI{UAL

Page 2SOLID STATE AUTO SPEED UNIT, Type SAS2

POPER CON TROL

1.

2.

b. Power Contrcl Relay (Refer to Figure 2)

Adiuct the aroature as tequired m obtain a

lh6 io,cb clcaratrce betwee! the aroature

end the aroature back stop vhen the relay isenergized.

forn the shct blades so they move 1/54inch vbea they oaLe and b,reak.

3. Forp the short blades as tequired so there is

^ l/r2 inch contact gap on cootact lnirs ..":lA? anj lAl? -}-n lArl lAt ..1 lA1 -,- '^'=:lA2 and 1Al2 vheo LAll, lAl and 1A3 are ,^,

-ftl^l:l i rrr.l-- - lterzi'^''i:E EtLo,.t-E E-ireri.rarf-__a: ;r:=,just openiog. Chcck by oaoually releasiogrelry ftoo the energized position.

-,

Figure 2. Pover Coorol Relay Adiustoent Detail.

REL AY lK2tol)


SOLID STATE AUTO SPEED UNIT, TvPe SAS2 and SAS2-5

l{oT Es:

'. . FOR 50 IIZ. UNITS, TYPE SAS2.5, USE ALTERNATE COMPONENTSMARKEO WITH ASTERISK.

2. TO SET AUTO SPEEO FREQ, FIRST SET..SPEED CONTROL.,R2Io2 To MIN. {FULL coUNTERcLocKwIsE As vIEwEo FRoMAOP OF CHASSIS) & AOJUST (FACTORY SET" CONTROLR2]'7 FOR A UNIJUNCTION OSCILLATOR FREQ. OF APPROX, &HERTZ FOR THE SAS2 & APPROX. 70 HERTZ FOR THE SAS2'5 THENAOJUST "SPEED CONTROL,I TO DESIREO INVERTER OUTPUT FREQ,

3. ALL RESISTORS ARE IN OHMS UNLESS OTHERWISE SPECIFIED"

.. ALL CAPACITORS ARE IN MICROFARAO UNLESS OTHERWISE SPECIFIED.

I;^ao,

A,n; 'PEE ""ARD

i.!trr

Page 3

CC

oz

z-Eo

Item Part No.

A2101 317958 Auto$eed Board lssembly

Capacito( .82 Mfd. 100 V. lr'letal MylarCapacitor 100 Mfd. l0 V. LvticCapacitor 2.0 Mfd. 200 V. Mylar

Capacitor 1000 Mfd. 35 V. LyticCapacito .05 litfd. 200 V. MylatCapacitor 100 Mfd. 10 V. LyticCapaclta .01 [,lfd.500 V. CeramicCapacitor 10 tffd.5 V. Lytic

Silicon Dide 170 V.Silicon Dide 170 V.Silicm Diode U0 V.Silicon Dide 170 V.Silicon Diode 100 V.Silicon Diode 100 V.Silicon Diode 170 V.Silicon Diode 100 V.

2 Amp. Fuse

Edge Connect0s (12 Position)

Power Relay (60 Hertz)Power Relay (50 Hertz)

Cap Housing

Item Part No. Description

c2101 86368

c2102 8n52c2103 86349c2101 8n25c2105 86235c2106 8n52c2107 86313

c2108 87697

cR210l 309384

cR2l02 309384cR2103 309384cR2104 S9384cR2105 309476

cR2106 309476

cR2107 309384cRzlm 309476

F2l0l 300103

J 2l0l 309308

K2101 X17817

K2101 317878

P2l0l 710316

R2101 82434R2102 317958R2103 82t52R2104 82400R2105 82408R2106 81288R2107 81288R2108 81236R2109 81236R2110 81295R2lll 81295R2112 82432R2li3 82408R2114 82408R2115 81293R2116 82898

R2117, 317968

T2101 317874T2l0l 317875

Unijunction TransistorNPN Power TransistorNPN Power TransistorNPN Transistor

Resistor 6800 Ohm )i lt. i0%8000 Ohm PotentiometerResisto( ll00 ohm, ,r lV. 5%

Resistu l0 0hm, I lI. l0%Resistor 47 0hm, 11 lY. lG%Resistor 4i0 0hmW.lt. 2 U. l0%Resistor 4i0 $m lY.It. 2 I. l0%Resistor 47 Ohm ll.ll. 2 lt. l0%Resistor 47 Ohm ll.W. 2 ll. l0%Resistot 230 Ohm lY.lY. 5 ll. l0%Resistor 230 Ohm Yl.lY. 5lL l0%Resistor {700 Ohm }6 I{. 10%Resistor 47 Ohm I I{. l0%Resistor 47 Ohm I lI. l0%Resistor l2m Ohm lV.l{. 2 IL 5%

Resistor 210 ohm 14 ll. 5%

80ffi Ohm Potentiometer

Output Transformer (50 Hertz)output TranslorrEr (50 Hertz)

Q2101 309443

Q2102 309441

Q2t03 309441

Q2104 309442

Seeburg LS2 Supplement

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Transcript of Seeburg LS2 Supplement