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Seeburg 8800 Service Manual

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SERVICE MANUAL
No. 1·
SEE BURG
SYMPHONOLAS
•
Models
1941
7800, 7880. 8800. 9800 .
•
J. P. SEEB U R G CORPORATION
1 50 0
DAYTON STREET
CHICAGO.
U. S.
A
i'.
•
•

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  • Page 1 SERVICE MANUAL No. 1· SEE BURG SYMPHONOLAS • Models 1941 7800, 7880. 8800. 9800 . • J. P. SEEB U R G CORPORATION 1 50 0 DAYTON STREET CHICAGO. U. S. • •...
  • Page 2 In preparing this manual every effort was made t o present t h e material i n a s simple a form a s possible • Seeburg maintains a nation-wide organization of field engineers to instruct and co-operate with your servicE de;.>artment.
  • Page 3 TABLE OF CONTENTS P age I H S T A L L A T I O H U H P A C Kl!lG • • C UR R E H T SUPPLY FOR I H STRUMEHT • • • • •...
  • Page 4 7800. 7850, 8800 9800 S&rvice Manual '41 Models Page E L E CTRICAL C O U H T E R • • • • • • • • • • • • C R E D I T I H l> I C A T I H G C I R C U I T .
  • Page 5 7800, 7850, 8800 9800 SeNice Manual '41 Models Page S O L E N O I D D R U M A S S E M B L Y . , , , • • • • • • •...
  • Page 6 7800, 7850, 8800 9800 Serv i c e Manual Models Page TU RH T A B L E llOES H O T R O T A T E W H E H I H f'LAYI H G POS I T I O H .
  • Page 7 7800. 78SO, 8800 9800 Service Manual '41 Models D I STORTEll TOHE QU A L I T Y . • • MOTOR H U H • • • • • • • H U M ll\JRI H G WARM U P PER I OD .
  • Page 8 Manual •41 Mod.els 1800, 7860, 8800 and. 9800 Service Page SOLEHO I[) PLUNGER • • • DOES P !J • • MOTOR C O H TROL RELAY DOES HOT OPERATE PROPERLY MOTOR CONTROL CIRCUIT ••• • • • • • •...
  • Page 9 Service Manual Models 7800, 78SO, 8800 and 9800 Page Fig. Coin Mechanism Assemb l y . " • Fi g. Rejector. • • • • • • • • • • • • • • Fi g. Coin Tri pp er Assemb J y.
  • Page 10 INSTALLATION UNPACKING Hemove the four wing nuts in each corner of We advise that the packing the chassis. case be carefully examined before unboxing the instrument, and NOTE; The Wing nuts should there be any indication of should be removed so coTicealed damages, the transpor­...
  • Page 11 SerVice Manual •41 Models 7800, 7850, 8800 and 9800 is best to install or replace their original position by hand the record in No. tray first. excepting }fo, which should re­ ma:in over the turntable. Install or change the balance of the records starting with No.
  • Page 12 FUNCTIONS OF COMPONENTS IN SYSTEM sntP H O H O L A COIN SWITC.H ASSE]l(BLY But when the selector slide (No . is in oosition w:lih the 1180) 'v'hen a coin enters the selector pawis opposite the lugs 25¢ runway of the coin switch as sem­ as shown in Fig.
  • Page 13 Service Manual •41 Models 7800, 7850, 8800 and 9800 clockwise as its corresponding the dials, turn them counter­ clockwise b y hand until they record comes to playing posi­ 8800 9800 tion. A reading can be taken by reach the stop position.
  • Page 14 Service Manual •41 Models 7800, 7850, 8800 9800 The small 2 contact polarized to the program lights. These socket (Fig. 10, Item Fig. lights are on a s long a s the main Item supplies volts for the switch (Fig. 17, Item...
  • Page 15 Manual •41 Models and 9800 Servic& 7800, 7850, 8800 (�) tlirough to establish credit in the once. There are two fundamental selector mechanism, convey circuits the selector 19); selections to and establish them switches as shown on the Sche­ on the solenoid drum i:lnd matic Fig.
  • Page 16 • SSOO Service Manual '41 Models 7800, 7850. and 9800 series relay circuit to close. tacts of the series relay close. The series relay thus energizes This means that the operator can­ the cancel solenoid permitting a not make another selection until credit to be cancelled from the he first removes his fingex ·...
  • Page 17 Service Manual '41 Models 7800, 7850, 8800 and 9800 (Fig. 19, ltem H9) and the con­ dial (Fig. Item 34) . This tact set (Fig. is used. dial visible through the small Its function is to prolong the window tn the front escutcneon.
  • Page 18 Manual Models 7800, 7860, 8800 and 9800 Service has been played and the turntable two selections. I t operates has returned to its lowest posi­ every time a selecting pulse tion. The solenoid plunger and travels through any of the selec­...
  • Page 19 THE SELECTOR SLIDE PLATE. T O !l f ARM \•/EIGHT .PJJJUSTMENT it is easy to determine just when TONE ARH 7800 the needle starts lifting out of Model the weight of the grooves. the tone arw at the needle with...
  • Page 20 Service Manual '41 Models 7800, 78!30, 8800 and 9800 tics are determined PICKUP its cor.­ struction and the materials (F-3121 kups used. To dismantle the unit will a r e used inter­ reduce its magnetism, change the changeably i:n the tone arm damping a:nd introduce maladjust­...
  • Page 21 Service Manual Models 7800, 7850, 8800 and 9800 � . I H S T R U C T I O N S F O R I H S T A L LA T I O H O F W I R E D R E H O T E S P E A K ER...
  • Page 22 Mod�ls Service Manual '41 7800 . 7850, 8800 and 9800 SELECTOR E L E C T R I CA L CREDIT RELAY MECHANISN SERI.ES The credit magnet (F The relay (Fig. 24, Item 1) which loca � n left side...
  • Page 23 Service Manual '4! Models 1800, 1850, 8800 9800 There are two guide brackets should not close too soon. which support the connecting link it does, the cancel solenoid may between the solenoid plunger and be tripped out before it has cancelled a credit from the the cancel pawl.
  • Page 24 SeMrice Manual '41 Models 7800, 7850, 8800 and 9800 guide plate (Fig. 25, Item 9 ) . cleaned with a contact burnishing When taking off t.. l\e solenoid tool. guide plate the collector brush blades must be unsoldered from Access to the motor control the leads that connect to them.
  • Page 25 &rn� Manual •41 Models 7800, 1850, 8800 and 9800 armature i s brought down it will made, the locking nut on this adjustment screw should be push selector stop pin into normal position. If t tightened. shaft spring is stiff,...
  • Page 26 SERVICE NOTES C R E D I T S F A I L P R O P E R N U M B E R O F R E G I S T E R I N T H E �t E C H A H I C A L S E L E C T O R a contact bending tool to in­...
  • Page 27 Service Manual '41 Models 7800, 7850, 8800 and 9800 accessible. It should be cleaned Binding in the transmission with fine sand paper Olld wiped 3054) with a clean cloth. and tight bearings in the motor may cause the motor to ST1IBTING WINDING CUTS IN AND overload.
  • Page 28 M.;snual '41 Modela Service 7800, 7850, 8800 and 9800 line with the selector pawl 6A; W o . 1222) slightly upward springs, the adjustment can be do11nward u. 11 til the proper align­ greatly simpliried by bending the ment of t . h e roller with t .h e helix roller mounting stud (Fig.
  • Page 29 Se.rvice Manual Models 7800, 7850. and 9800 asoo I M P R O P E R A D V A N C E O F R E A R H E L I X SELR.c'l'OR MECI!ANIS�1 BINDS in motion and watch the rotation of' the sprocket.
  • Page 30 Service Manual '41 Modele 7800, 7850. 8800 9800 should b e remedied be�ore at­ ing. should slide back and t t: tempting any adjustments, forth f:reely. The steel worm gear (Fig. and the 1071) 3054) lal'ge worm gear (Fig. llii C ORReCT CUT-OFF ADJU!::J T ,'·1E'NTS may :nesh too tightly, The che.nging mechanism should...
  • Page 31 Manual •41 Models Service 1800, 1850, 8800 and 9800 of the record the tone arm to skid across the If the tone arm record q nen the turntable rises booster spring i s adjusted with too much tension, it may cau s e to t he playi.ng position.
  • Page 32 Service Manual '41 Modela 7800 , 7850. 8000 and 9800 "Burrs1t or nflats" on the down objectionable points in the turntable spindle No. 1121, Fig. gear. The Pr€ssure should ap­ plied w.i. th a soft smooth material and the varying surfaces may also produce the wa�bling tone.
  • Page 33 Service Manual '41 Models 7800, 7850, 8800 and 9800 have approximately 1/3211 sheft should be such that when more) the throwout pawl is brought up space between t ageJ.nst approximately i/16 " of the pin in the transmission clutch edge...
  • Page 34 Manual '41 Models Service 7800, 7850, 8800 9800 slight hum was noticeable When shorted or defective tube 'l'o is often a cause of faulty tone the tubes in the amplifier warmed quality. this hum, the eliminste heater of one of the 6J5GT driver Item 33;...
  • Page 35 Senioe Manual '41 Models 7800, 1850, 8800 and 9800 PROPERLY l/Z.21! COIN SWITCH CONTACTS l�OT when the escapement leve1· is sealed against the credit pole ADJUS Tl!:D faces, the credit magnet may be a coin switch in coin toward the escapement...
  • Page 36 Manual '41 Models 7800 , Service 1�, 8800 al\d 9800 CREDIT SwlTCf. CONTACTS IN'lERLOCKING RELAY CONTACTS the credit switch con­ The nor-mally closed contacts starting tacts ar-e open or- make poor- con­ of the interlocking relay tact, the relay will be Item Fig.
  • Page 37 Manual 8800 and 9800 Service '41 Models 7800, 7850, 1 7 . M O T O R D O E S HOT S T A R T W it E H A S E L E C T I OH...
  • Page 38 7800, 7860, 8800 and 9800 Service Manual Models 1 8 . S E L E C T I O N S F A I L TO R E G I ST E R O H S O L E H O I D D R U M A S S E M B L Y cancellation of a selection i s x·eceived...
  • Page 39 7800, Service Manual '41 Models 7850, 8800 and 9800 which is set to just close it. turning easily under the weight the adjusting screw is too of a quarter. LUBRICANTS. far in, the rear scavenger gate (Fig. 30, Item 0) will be held The scavenger wiper blade open.
  • Page 40 ..� �l...
  • Page 41 t. . t � ll S.'tM�H,>DLA <D '--NE COii.:! ® eucrNO.� SELilCrco ....J< 'I ON <' LIGHTS ® @ ® ® ® ® MO";OJ.: �;i�V()V.:P. ® &O T i O IA W.fTCH , , ..,,. . @c!!<N ::.w•r<:wc::s F I G U R E...
  • Page 42 • EL 7800 C A S I F I G U R E tl O . W I R I H G O J AGRAM F O R M O O C:O'f I M04. "tllfot•�ll• $Vl\llP�QN(ll. A t1NE. CD�O ,_,- �...
  • Page 43 F I GU R E H O . 4 SYl.!PHOHO� D � tul' t! O tl' ID .. f i' .P. T � - T � S!'Wlt".. & P-1¢0!. • • • • • • • • F-1003 - �r:?r$1/l13; ..
  • Page 44 REAR Ell' ( C UTAWAY) SS I S I/ I...
  • Page 45 """' :;; ,. ._,.. "" ,,,. .., ,,., FRONT F I G U R E N O . V I EW M E C H A N I CAL SYMP...
  • Page 46 "[" .U1.T NO, 'Jt Jll) PRZCP: '?ep Sll!!'.lt • '-l001 • • • • • • • • �.2 0 , • • J' -J.0C2 ;:..1Ci F'r 4M !ro:li • • • • , • .. 'l" .1.rn�W!!' 'i:!.'!: va t.U-..t; t.Lok f'·L.
  • Page 47 H O . 6 SYM?HONf F I G U R E "8" - - -...
  • Page 48 R E A R V I E W � � r- - - � MO DE L...
  • Page 49 f'IGtlitt .110 . �lcSSIS \!IE'h SYNPJIO�OLA PAftTS LI P . E l P . lie. usiro P.li\T NO. D E S C RI P T I O!i "PR I CE t't'a. r � F-!00� ;<r.er $ •.io • • • •...
  • Page 50 F l G U R E H O . 7 - S Y M P H O H llll...
  • Page 51 >LA C H A S S ! S E H D V I Ell USED l' Af'. T N(). JJESCRI?TIO� i 'RI C E $ .ss F -101 0 =�•l>le SpWle. • • • F-lora fum\'al>l• S ln<il llro.cl<ot. l..l.O stop �..,a,y F -:!lll...
  • Page 52 � S Y M P H O H O L A C H A S S I S - F R O N T V I EW F I G U R E N O . • PAAT 110. ilES'.)RifUON NO.
  • Page 53 "' "' ..� "' � I • I _____ •...
  • Page 54 NO. 9 nGIJte Sat&!Al\ t FO• TYPE 6?S- jQ JMPllFI 014Jla� �f'tl� •rs s1oa.s �S3 \la�� U'iJ S ,600 � • • 824!:.Z. �'oU � 500 Q1>!c l / 2 • • • f-!076 � 1£,000 ¢tan Vol- 'io»t.nil. l<ltt n l\-4 �...
  • Page 55 rlGUR£ NO, 12 SCKHlATIC OfAGRAM ro�. TYPE 825-5 •�PllHEB XTE-1 .?IJl'! O£SCJ<J:FTICN llO. PP.IC& �ESISTORS s,S3oo 0: "1 > · r l/t. 82455 1.'et.. t l� • fi� sec Dhloo 62432 1/1- wott 1\-5 OhtttS Vo t� f'-3074 ,,000 c Cohti:ol. ,o:>�...
  • Page 56 M O · F I GU R E BOTTOM V I EW 0 1' TYP E 8 2 5 - 5 AMPL I F I ER C•ll'tltll'TIOM l'l\!C� C:V. � : I'l'iM 1 1 � Ou:t1\t?t:JJ1;· PAKr RF.Q. !Ti.ii P J . . F. esooa �...
  • Page 57 >­ "" ..::i: ..::c: <.> a> L-------------.
  • Page 58 FIGU�E 6 1 5-3 SCttEMATIC O I AGRAM AMPL I F I E R � ITJ'M P.<11\ T liO. DESCRIPTION PP.IC& �ESISTORS 82455 5,600 l / 2 Ohms lfP.tt • 92462 500 O ilt.ls watt • • ..Z O bm V..ltvr.e Control 82448 lOG,ooo Olll l"'...
  • Page 59 G lJ R E N O . F R O N T V I E l'/ O F T Y P E 6 1 5 - 3 A M P L I F l ITE M PAR'f tlO. DESCRil'"£ION DESCRI?TION !TE'\ l' AP .
  • Page 60 H O . 6 1 5- 3 AMPL I F I ER F l G U R E B O T T O M V I E W O F TYPE D&SCllIPTIO� Vol\ F..J.049 - )\ll n 5:11 tel\ .015 Mro. 400 •...
  • Page 61 : : : : : : : : : : : : : : ;, J � I f f I t I I !!?;:s�e.: ... • • ..� ... - •...
  • Page 62 SELECT 0 R SCHEMA T T Y P E D I AGRA 14 El EC TR 1 C A L GU R E • ••• PiRt wo.1'!1). liO . !Gl l. . o�trnoH PRICE I1'llX l>JiSCl<[l'tl'.O ll P .lr.P. T f'lO. PlllQZ n·...
  • Page 63 F I G U R E H O . S C H E M A T I C O I A G R A M S E R I E S R E L A Y ( SE L E C T I O N ) C I R C U I T _ _ _ 1 @ �...
  • Page 64 © - - __ F I G U R E SCHEMA T I C D I AGRAM C R E O l T C I RC U I T MO . lml Pt.l!T HO. NO. REQ. PRI<::E @ >D D' (M .C .s.
  • Page 65 - ® ® ..........,, _ ·-- ..- . . _� . --· \l'l .."­ �) > .."" ..<..) ..<..) ©...
  • Page 66 S W I T C H A S S E M B L Y TYPE S A - 6 Z F I G U R E H O . Pl l l !l! F-6224..J­ S•loct>r &rltcb. ·'•••>l>ly :t-.>01< -kot. (rell'4la). P-�62:;.
  • Page 67 Kc.l� do�. , :IQ 1'!cw��in& l'-9llS - S:>len9�d Brscket F-38'11 I; !-�gr.et - Cro:ii pr . l.00 (a-..r) 7800> itl.lbbex - C::.-01r0tet eqz . • • F-!.'119 - S:>.lehoid Brseic.et F-9433 Retehet. AC.t.\Utt.IJ!' ( P.ron ..
  • Page 68 F I GU R E H O . SOlHIO I D DRUM TYPE ( TOP V I EW} A S S EMBtY S D 2 0 - 7 Z ?-t"..a.l\;!; ? A?.'.i' � .. J!EStR!??Jl).ri I'.!'!;.l! P .R!l:!: PAA! !IO. �Su�...
  • Page 69 GU R E H DRUM OM V I EW) 26 - S O L A S S E M B L Y T Y P E S 0 2 0 - 7l 8 OTT "" IW1 PART NO. DESCRIPT!O!: NO,!l. 'LQ.. PRICE ITEi'( PART...
  • Page 70 G U R E K O . 2 SCHEMA T I C M O T O R COKTROL C I R CU I T D I AGRAM OLENOIO ORUM SO 20-7t r - - - - - - - - - - - - 1 ®...
  • Page 71 F I GU R E SOL£HO I D DRUM N O . S C H £t.IAT I C D I AGRAM T Y P E S02.0-7Z M ·I • • " " .__ _ _ _ _ _ , -- - ..
  • Page 72 29 - F I G U R E M 0 • CO I N t.1 [ C H AH I SM A $ $EM l!L Y !U!Q. Pi'..t G E F..&7Q�-A Coil\ llax _:,sseo;ru.y (Co,._ plet�) . • F...6lJl 7 Coln Sl'Ou:t Th..'mel !.sseotl>l;r.
  • Page 73 F I G U R E H O . S L U G R E J E C T O R FR O N T •...
  • Page 74 3 I - ER A s s EM Gu RE N 0 . co r N T I p p 8 L y }!l.:rl? ONT VtEW "8'-REAR VIEW USE CARBON TETRACHLORIDE TO CLE/IN SILVER CCNTACTS APPLY WITH SMALL BRUSH.
  • Page 75 F l G U R E H O . MO!>EL C A B I N E T F R O MT V I E W 7800 w M.t. n..u. • ..FbT � • · - - - � Kla&c-.
  • Page 76 MODEL 7800 CAB I HET F I GU R E OPEN N O . ( F RONT V I EW) D O O R P ll!C:: - � r- 71l4 ..&•�••- f-1801 IW1'°"W b!"lec\or (L1cl) • • • •...
  • Page 77 F I GU R E CA811'1£T ( RE A R V I [\'/) 7800 3 11 M O D E L K O . '''" "" "" t�-1� �.;..Q.cu - t.:J1 �4lll li>! Mal.. ••• • • ��7.
  • Page 78 F I G U R E N O . H O DEL ( F R O N T I EW) 7 8 5 0 CAB I H E T • i=:? . L "l"l: l oo.mi. ffi1CS r .ut T �o. lll:scalnl O:I rl'f)4 F �...
  • Page 79 1 G U R E. N O . 36 - M O D E L 7 8 5 0 C A 8 1 ET ( F RONT E.W) O O O R O P E N rm< ::ro.�. r n:: -t rro.a.c.�.
  • Page 80 F l G ll R E ( R E A R \ll E W ) N O . 37 MOO£L 7 8 5 0 CAS N E T rret !'l.!IT 110. l)fSC Rll' T 1 o;l 110. 0£1;. Df.SC ? .lP rt O�l PP.ICE :l£Ct PRICE...
  • Page 81 F t 6U R E MODEL 8 8 0 0 CAS I H ET ( F R ONT V l E W ) H O . l' � t t1.oc ?M� ..• ..• • <it'lr..L.
  • Page 82 F I GU R E H O . 39 - M O D E L $ 8 0 0 C A B I N E T ( F RO H T V I E W ) l>O. =· DES:.RIF"ITOM PP J:Cll P J,1.
  • Page 83 V 1 E.11) CAB I G U R E H I - T O N E HET A S S E M B L Y ( R E. AR N O . ltO • f(J;Q. i'R ll:E If () . D ESCIUPTI Oll Itf>I P Alt T...
  • Page 84 F I G U R £ � I - H I - T O N E C A S I M E T A CC ES SO R I E S ( U P P E R R E A R V I EW) 11 0 .
  • Page 85 H I - T O N E C A B ) N ET A C C E S S O R I E S ( L O W E R E A R ! E �1) �2 N O . F I G U R E O!SC:U.:"'TiOU 1'110,...
  • Page 86 F I G U R E H O . H l - l O H E C A 8 1 H E T ACCESSO R I ES { FROMT DOOR O P E H ) "" · "= · � J �...
  • Page 87 G U R E H O . tp� F R O H T D O O R L I GHT I KG A S S E M B L Y DESCRl?rIO JIO. R£.Q. .l"Rl Ci: I'i:Di PkRr JIC. p nr. >r i10 t l .2S $ .ss - Sottom FTont Door...