BILL SYSTEM PRACTICES Pla•t series

SECTIOlt 512-620~400 Issue 5, April, 1964

AT&TCo Standard

SPEAKERPHONE SYSTEMS- 3 TYPE

CONTROL UNITS AND TRANSMITTER UNITS

CONNECTIONS

I. GENERAL

1.01 This section shows connections between components in the 3-type speakerphone system.

1.02 This section is being reissued to:

• Add the SSB control unit.

• Add the 666B. 669A. 670A and 671A transmi.tter.

8

470 R2

7

R3 1600

CR4

CR2 CR3

SEE NOTE

NOTE : 55A CONTROL UNITS MANUFi\C TURED BETWEEN APRIL AND OCTOBER OF 1962 ARE PRONE TO NO f SE PROBLEMS. THESE CONTROL UNITS WERE WI RED ACCORD-ING TO FIG. 1 A. THESE UNITS SHOULD BE REPLACED WITH CONTROL UNITS WIRED PER FIG. 1. DO NOT MOD I FY CONTROL UNIT IN HlE FIELD.

P-12E658

3

2

Fig. lA- Modification of P-12E658 Printed Wiring Board

© American Telephone and Telegraph Company, 1964 Printed in U.S. A. Page I

ReistM,Ji i

i.CTION 512-620-400

NOTE 3

558 55A* CONT CONT UNIT UNIT

e4

-3

.2

• I

Tl 2563A

5. 6 -7.

8 •

----------, \ ,

I I • • I I el2 •" eiO .9 I I • • I I I

NOTE I T2

2!1638

• 4 5 •

(0) • 3 6 •

e2 7e .I (BR)

/

~/ • • 2 .._ ____ ---,

•a .7 • 6 .5 .4 .3 .2 . .I • • • • •

I I I I I I I I

r-;=t:==L~~+--TEST TERMINAL ~-------- -----~~-R~~A~--------- ____ j

~;;;;;:...--+--M--=::---1-- STRAP • MODIFIED 55A CONTROL UNIT

'+--:::--"'-+--USE IF REDUCED VOLUME IN LSPKR IS DESIRED

NOTE 1 : VIEWED FRO!~ TOP OF 55-TYPE CONTROL UNIT.

NOTE 2: MAKE THE FOLLOWING CHANGES TO THE 55A CONTROL UNIT FOR USE vJ I TH TOUCH-TONE DIALS:

( 1.) CONNECT TERr-11 ~AL 32 OF TS TO TERMINAL 2 OF ~1 RELAY. (2.) CONNECT TERMINAL 1 OF TS TO TERMINAL 8 OF Kl RELAY.

(3 .) CONNECT 1 OOA VARISTOR BEn:EE:J TER~ll NALS 20 AND 25 ON TS, (4 . ) CONNECT 100A VARISTOR BETWEEN TERMINALS 30 AND 25 ON TS.

HOTE 3: PLACE STRAP WHEN USED WITH TOUCH-TONE DIAL .

NOTE 4: THE STRAP BETWEEN 11 AND 20 WILL BE REMOVED BY WESTERN ELECTRIC CO.

Fig. I B -Modification of 55A Control Unit for Use With TOUCH-TONE Dial Telephone Sets

---------Rl5 4300

RIO 20,000

P-i2E~OI Pll JIJ

r----....--i

t--~H ).~~ Rl6 4700

..--

P!' I )J_I_K ---------, I

~leo-.-- --:-44_oo_i_-- ------------ - --------- -,......----..,.._.3"v~ll':o.--..--.....-:ll':ll:,-~ ')J-4_K _____ __,

! ~~ ~o ::00 •Jfo'o :~oo ~~~000 ~~ · :~~ I

I '="' 2564A it I 01 '""U_H--....----,..:::-.,_ C 8 T2 J I_ CRI J r. CR3 2M3F o•A ~ ~c 1\_ Q3~ ( "'-il-l-\.j-4-..--11f-.!.0

-. ,,..!. ,. Rl6 R21 Tl 10228 ~I+} __ _... 128 .,.l} II' P4L R3 F-" P"' :::x, .I i ~ t-- 10,000 I

,.....~~J;..:4~A(I P4A ~ ~~~7sJ c2 16,000 :~ R5 g~s ~~::Oo Re Ro2 4 t:; J,:~:oo JJCR4 II 0·2 0 2400 -HmE~ & 3900 23' 7 Rl4 Rlt

100 uo

r f-r 1

1 ~ R9 ~ L...f-__ ___..__.,RIVI'Ir7-.-.-t-'ll"v221.-_.P_4_w~ I >J-4-"-----,

r 33oo ~ .9 39,ooo I

J4L

J48

~~ ~ ~ I C7 14,700 •.

43,000 Rl8 '* PJl : ~ ~- ---------·-- ·-----0- ·-00_3_9 ________ ... _·~-:-:-P4J-:--:--~4-C-:-:----- ·- - - ---1 d--!--:-P~4-:0------1'

+--c~"*'--,v:V:'II-0-~~-----------------------~ I ~J~J:~;==~============~==t:==~~::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::J:4~Fl~~~==~=4=c:t~~================j:J:4:o::::::::::::::::::::=,-tt-----"l

c~ 60 +

~ r- __ I" J3C

rwiM. STRIP r--

20 [ r-4(

1 INDICATES GROUND

-=-STRIP OF PRINTED WIRING BOARD

l INDICATES CHASSIS GROUND

P- 1 2E604~==~~~====================~~~======================~::~~ C~ -~ P3E _L ~ J~ r F P-12[607 Rl5 "'P3C I

.120 rf---;:::::.:t;::++H-.:.:I.O:j--Hf--'J0::3!:.(K P3K --+---------------, RS 8800 CR 1

, H

0 25 CR5 . I 0.12 11!11<10 12 MEG T2 CR7 CRII I J3H I P3H 2564E CR3 Re CR5 C4 r

~'-1--4'-l-+-.....!.=::.:(1 :JJTI:,...-4t--M~.....,t-Wv----MI~~r--if--i RIO _1 : IIi :~RIO Cll P3f J3F 18,0J'ci o~J, ~!~: ~RI 6110

o.1 02 o&,ooo 10~ ~ J3J ~~ !!!. c; li~CR6 /":12:>et""""._t------lf------+{_\-1{ ....._)c~.~ ' 5 CR9 + 20 I

' 01 -=- + .--LEt:) ::!::±"_ ; 5,'65 ce '-...!) I 120 CR2 1.0

j 2564F 1 1 1 Tl CRI Rll I

~~--~2-M-EG---1r~R-e6-.ooo------------l--=:;J:~~ !~1~4~R3l7 I;~~ --t-c-e-1-'PI!..z::..:IH? ~~ r.;;..._--+-~::---j--ffii \02 ~ 100

~~~ IoP2:::.;F-'VR>III r-<6.-1---1_{-i'y' lol ~J_ g·.~ C4 ~)120 8_~2 ~-c .. Rz+-----".._..._ __ ,_•..._ _ _,r-..:.s:: II2"71L I~ 0.1 1 4700 \0...../128 5 C5 CR4 1 ~ 1 ,P2E ~ r-- .--- R

7 - \·+ ~c ~~~ ~--.!-~------i ~ r-- 0.05 CR8

R! CR4 - C5 Rll r---------------t~2~7~t--------T-F--2 TRANSFORMER 36 TF I J TO 20128

R3 10,000

R4 - Cl 3920 25 ~ ! 2000 + ~ C3 R9 ~

Ct6

I 42.2 R8 + 5 7150 I R2 R7 2000 C6 24

r-------------t-~-1----------- (NOTE3B4l CIO

Q~-~---~------------~-~~-o_p_oo_~~-----o-~-0_4_7------~,~2-~~~ , ,...-~-H-~~7 ~ ~ C3 R9 :~~ Rl3 ~:~ l \ • i {

+ 20 56.2 1000 r----, I...- I ;g_1.... 33 s PI J 'I TO

t I'lL L _J,P-:3·A ·--------' r-.. ----------.-,..-_-_-t-+;;:-~-G3:4-:t:-:::_:-:::_-:::_-:::_~s~P:'2 'Jil"'KER Jl l.. y YJliA 19 Tl ...,

r.h r.h ..--------r-1~~----~~A~G b~

R~ r-- 0.01 Ill 1000

'l: ~· "'' ~ '" ,,::: [ :: •:o :::-: I ~:.::....~ o"'. ooov.,...-...,...-J,.P-~-J_-_-_-_-_ -_ +_ -_P-::_2A-=--=-~~~-=--=-"'.~~P-2_8-::_-::_-::_-::_-::_-::_-_--_---------------_-_-:____j

r~::::::::::::::::f:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::~~~~~~~~~~~~~~:[l~~======t~~t1~~f~~~~~T;[~9~~~2t:~~===A=I=- ~SG ~ 1 -~2 Go i'-~o

·Mr~~~~~C~7~l:============~==!!~~~~~~==f~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~:IJ:~ , L~211

TELSET

T 114 I 01 NOTE~ pl . lflTE 182) SEll.. 4700 4 ~0 _1P4 /Jr

1111 . .I ..r::::::_ 1'"-++-+-1+--+--+-2~8-+-+---_..:.;.R 1:...) .Jt / ·

~~~~~~~~~~~~~~~~~~~~~~~~~!jf-----~r===~----~~--~~~~~~~~f~Pc--1112~!66l l~ 1 R& Ta , IOM .6 .l C 10 I 51~J 24 3 l e 10 · ~ ~0 FIG.IO WHEN T 0.01 I : C9 -.J PROVIDED

2EM .6 .._:l~ii>-'S:;_._-1 :\ j I---t 4 M 1 ~ S'

311~-~~~~~~~~~~~~:~~~~~~~~:t~~T~~~-~-~--~!~~-~-~-~-~~~~~-f~~i~~~:::-~~~~~7~=~C~=~=~=~=~=~=~~~=~=~~~=~=~=====~:-~~~P~-~~~2

~FE~S~~58

~~~~~~:R:?~~~~:4~~2~,0~~~~~~~~~~~·~-~-~~·f>~-~-~·~~--r--r-&14-1--------M~2, ~,~ , f.,""'Y), IJ 470 R3 J_, 5VCR2 r--------+--------"'_'lly----...:1,..J:Ol-:-------------+--' I 13 PI II TO XMTR ~... 3 4~ 'f ~~s--~~ ~2 ~~ T~~cR! ~~==;--~~! ====J2~4~-=-~sc=---------~--~~==tt=j==t=t2~9~_j====JA~~=· ~- 3 , 4 , s.~7

71 ._ I & £~go I n '-----t---t+--t----t-12~~-++--.......;.F-:-1 W 4"' t• I :!. s ,

__toi= ' ~ J CR _L I 18 ROR RI'J 51_][_ rl7 C 7 r---1r-41.,_-Hr-R-OR_R_I TO KTU FOR

111_][_ !c§. ~ 3 I r7 r--+-~-H--"....::-''-':'-'- COMMON SIGNAL I + ~- + C4 CRe s 1 r-t-~lt-+t--;:.B;..:o":R:...B;:.I:... coNTROL 12EII A_ 40- 1'40 NOTE 6 1 I 8 OR 81

~~.~.~ ~ J '

--------lf]r[]:!l;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~CR~~·4~~~~~~~~~-~~~~2~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~:~~~~:~:~:~:~:] ~e~g~~~~N UZZER CKT 7 R OR Rl

9 R OR Rl 2V ~ 8L) TO FI G. 9 WHEN

l_-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------t~~j----------- PROVIDED

YJZJ yJ2A yJ2B

ISS 5, SECTION 512-620:-48.

NOTE 1 : FOR TEW jON£ ' n CONNECTIONS, REFE R TO APPI'OPR ifTE SECT 10., . NOTL 1: !~ · MOO I FY 1 HE SSA CONTROL uNIT TO WORK WITH TOUCH - Ttl<E DIAL TElEPHONE SETS, SEE FIG. 1B.

NOTE 3 : DUE TO THE LGOJER VOLTAGE RATING, THE 1011A TRANSFDRI'ER SHOUlD HOT UE USED TO PMR THE SSA CONTROl UNIT.

NOTE 4: DO NOT USE ANY GROUNDED PO\JER SU PPLY TO PO\JER THE SSA CONTROl UNIT , SUCH AS THE 1 BV AC TA P ON THE 101 TYP£ POWER SUP PL Y. USE OF ft GROUNDED POIJER SUPPlY Will AFFECT OPERAT I 00 OF THE UN 11.

NOTE 5: RE' I STANCE VAlUES ~RE IN Olf4S, AND CAr•,•C I TllNCE ~'AlUE ARE I" >IICRO I ARAOS , UNlESS OTH ERWISE NOTED. ·

~OTE b : SSA Ctl<TRIJ.. UN ITS MANUFACWREO BETIEEN A?Ril ~NO OCTOBER OF 1%2 ARE PROOE TO NOISE PROBLEMS. THESE COOTROl UNITS wE"E WIRED ACCORD ING TO FIG. 1-1 • THESE UNITS SHOULD BE I:EPlACED WITH C£JHROL UN ITS URED .~S PER Fl() , 1. DO NOT ·.teDIFY CONTR OL UN IT IN THE 1: 1El0

NOTE 7 : If REOLCEO VOUM£ FRJM THE LOUDS PEAKER o; L'ESIRED, CONNECT SP1 LEAD TO TERM INAl 24.

I~CTE ! : "SE FOR DI AL CliCK SUPPRESS ION WITH ROTARY DIAl TEu·· HONE SETS THAT ARE DIALED FRIJ4 AN "ON HOOK" Ctl<OITI!lL

NOTE 9 : CONNECT lOCAl G~aJNO.

Fig. I "'5SA_, Ofttr~ Unit

,..,.a

ISS I, SICTIOII & 12-.820 'I n

l.nc ... ~., r----------.,..,..--------·-------~ ...:JIH _..tit: J48 48 -...---.--....--iii.ft4~_.,-----...-------. RIIS ...:;zo--;;;ctJ4K

rljC--r'f.IH-pj£ ---------------- --·-P-"'IS"""'so"" ~------.. ~ .Jiol ++l~'C) !t_.l . 2400":"J:C6 .------........o3'WIIlOo..,.....,._ __ ¥:5itiC~~ ~>-------. ~~A~~:'*' CONI£tTIDIIS, IlEfER TO

~ I ~~~:__ 4Rl~ v .--- 1 ..... R2 "1'100 lt7 ltiO ltta Rt8 I 1

"""' 1110

JVV

1 ---p.,:zu

61 1

1 2200 = ·4100 24,000 100 ezo 1 NOTE 2: ouE To THE LMR vCl.TAG£ RATING, THE zouA

.. 1 I b-.. 2•*4A ! I TRAIISfOftHER SllaJLD HOT BE USED TO 1'01.0 nfE 551\

I I Rl .~· 20,000 I $10' .J_, ~\ ""' ".ii~ .... C(liTROl UIIIT.

II j !1! 1 2200 ..

4

.. ~ Rl4 I'll<~ II",.JII< T.oel 01o"J 'T CRI I I 2!143F ~~ ~1+1...._..-__ 0_2_!(7<:"1-1\+-e--• 03( 'U • ~1 I T2

a ~c11

111

1 .. • CRll NDlE 3: oo HOT use ANY GROUNOED PCW:R SUPPlY TO ,. ~ 100 1 ) . ,'T!!~--11------.-+ ..... ..=..:.1--1 -~t--__J __j~ f'4L Tl I"-' I2B\ ,.~. 1 128\_.!V ') ~~ " R2l PCJ.ER TH£ 5511 tDHTROL UNIT, su~ As THE t8Y At uP

I 4 220 1 11!1 ~/L-7-4---111"""1 ..--H\1• :. c4 ~ .__-i\1-1,. 1~ L------- I ' 1 II :o R3 r="' Rio =:,0 4 ~ 8 11,000 ~ 10/)00 I ~P~~ ~~~;:T!~~E~~~~-oru~~~T~RruroEO PCW:R

~! ~ I ~220 ... - r .... ~1· I •IOO ~.no,.o• fll• '= - , . .. I ...... 4 7 C2 -~ ~ ,r.,c.o'!. 'J;;o t ... I• .. '- I I .. -.. .. ~I ., .. I " ~-. I ..._ ,L ~L- ' r- " • 'It • ... I NOTE 4: RESISTAHCE VALUES ARE IH I»MS, Alii) CAPAC ITANCE

~~. A l'- 2"eoo~ .--:Of ~;2 ·t• Cf':: 3~ zJ'J~~.,..•--'+..._rc_z~ __ _.c4~o~ ~~ ~·L ~~~JIL n3 .z~7- a~~6--n')~ I 1_ I.,...,.. ~~ ::.., :~ ~~21,.' • ~: ·;: ... "' I~""· i~~~~~~:~£~:~::::-- · ~~- I" j_,.---- THAT ARE DI ALED IN-All " ill'l HOOK' C<l'IOITIDN .

R8 R8 GO 1 + 1118 PI~ I JIB .._ __ ~ II 1 ~7 14,700 I300 C8 38•000 I NOTE 7: USE FOO DlAL ·CLICK SUPPRESSION WITH ROTARY I 8200 43000 . _.L --.. ll.. ~~ ii _j DI AL TELEPHONE SETS THAT ARE DI ALED FRQ<I All '(lj HOOK" I • 711 ; I I 0.00~8 1r-- COHDITI (Ij ,

L------~~-~-------------------~----------~~~,>~~=~-~--~-~--~+--++--~~~--~-P--~_E_6_~-------~~~~~~~~~===~========---~~~~~~~~~-;-~_:~~~~-~-~-;'~~:~:-c~c~=:=------'~_~~: ::=~~~~~M~ ~ . I I I " I. , CIRCU IT FOR USE WITH 750A Oft 755A PBX .

~ ~---------~-~~-~----1-----+~~~---~T~~~-)TO 2~~ ~ I~ I~T~G~ STR I P~~mnD WIRmG~MD .

r_12iic)4-. --------- --·-----·----·--------~,,J2D ~~~--------~~---+----+-----+--<~4---....IJ Tr .. :.z._~_ ~~'laza~ ;b IND ICATESCHASSISGROUIID •.

Cl'll 1'~-f-{(:)l ..... f--NOTE 5 ~ CRYSTAL (CR-) OOIENTATI(Ii MARKS

2M4F CRI 1 1-rlt~==~~~=r~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~;;;;;;;t;;~=t=====+==~~~~~====R~PI!] ew Tl Rll 1 J TO I ~~,]~4 8200 I I SP2 SPEAKER

II ~~ ~ ~ ld!1 3~LR~~~-~~~7~~~~~-~~-~-~-~~-~++-~----------------------~-~--~~~~-------~---~ ~~ ~

r r-)02

J_ 8 a r- 1000 - ce r------------------------+-+---------l------f--+--+----1--__::~· • 14 ~... ..,-;:::. L.....f--.0 r-NO:':_E 8 .___,paoo<.~ Au~RNI..--4.,.._-IrHrt" \QI ~Ic2 j_c4 \1!: 12D ~~. ..__CI!.....,2__;._..__ ... +,_..l_loo--t---!:.P2t.~ .. ~' I~ .-1-.f_::;,a w ....

-~- I, --4100 \!!::)128 .... 0.1· !I co I VM - CR4 "7 ( <::: I

~ ~ R4 nCI ' ~~20 ~r-~ . .r P2~ ~~~ ::~~ . . ~~- ..., R3 2000 + !I c~1 R9 ,.;,.II Ml -

L' 10,000 Re ......__.. o.~T :0 1000 eRa II .. fr..a (,..,.2. . .&1-sc;. ,~-1 ll!l u 1 ,.";-b-1-NOTt~l . ., . . L SET

~21( l....,ICIO ~~~-- ·~-----_~:~!-o~-+I-... -.2A-+-l:-~~--+.-.... -.. ~1-----1 -----------;~~ --'-Tl4 .::•,+;' -e----' RV2]~ !~~ .~NoTi ~ . ·. .TE I) ~ __ f'2J .,..., ............ _ .__~ ~~~

1-~-~4-:~~ 1 "-f+--:::.a · - .~ · ,_."":: '

· m --y~--y~2a ------- 1 :" r1 2. 4 4700 'I. 1 1 1 1 I' R7 .. liB. . . nJO ltl ··<.t

24 'l·" L ~ I NOTE 9 ~ ·:U·' .as 7 _....13K - ___ po·_t_S£818 41'1ot.a...-tl-o----t=+=+=+----I-I---+-+..J ~ .. GRD ... . -Jrt. FIG. IO

P'<r:;;---1-~,~----------P .... -ir~------~~;---·--·-------------·--~~JJ~~~_J :! aE .. :~~ r.7 ·· ::- ... . . . ~Eo I~ aaoo ..., T ::::ea M% . l)/.,.:1

._-llr.llilll('.-.'1 ,P38 R6 '-t-1 ........ ---+--+-+-----~ ~ . . I'

1 ~ OJZ 2S64D c~:ij I ~ ~ Ptw.} / TO LmH.

1

,P3

H 2M4E MEG n CR7 Ptll , 1 "F rt---------·-------- .J 1 , " · .· · ' x1FM1rft · .I~ ~ Tl CR3 ft!l eRe C4 u" I • R2 fTR.. J:· . ce ~·Cft2 po-1211181 ..... , ~ 7B~ w lj-<:~---+-~-1-------+- ~·•• A:l~.... G.3,4,11,

;::u; Dl~' I ~''f~ ~I " ~ 1- r;:~ftfb( 'OR 7) .. .ocru o.:il ~~~ 6 Rl 6810 3.1 02 ra~ ~ J 4.~! 8 CRIO Cll "470 1600 T0.2 II CR3 iii: 2Eiot.&. ; . "' •

1..11.1 1: ,Pl!J ~ • ~ C2 ~ ~ ~ CR6 _12"'>8.....--41-+------l----·~r ) l " 1 = CS I TL..f--- -4-- _l ~II . S J!Jf 1\ 1~ "* • L.tf") T 1 u. ?io 5 .... ~ 20 1 oo ..... __ . · 1 ~ CR2 7 + ....- ~ f8~e i=:c8 ~ '"' 1 +

5 I IOM + 1 ..... - • OR AI 1

R2 ::.2 ~-C~R41--+-----. ~ r- ;;: •': T '"' I II +_:-~/5-~.-+~-404 ___ t'ii CftJ:;-------- ----+-: ---, ILt, ...... - --..______ .-t---+-:-=-~-=--=--=--=--=-~-=--=--=-~-=--{-v.:'2>~~:2~~~~-=--=--=-_J..JBA~: ::~:.::: i~~lotON ~ R7 .1~1!-, L.i~.,_.,_ ____ _. ...... ~ CR~l~~. 3

1

1 sa• ' ~!'.B 8M81

osoo 10,000 ~ Too47 r is+ 1 ..., 1 ~o + ro ". .r~~ 1113 ~~~ , l4,t-- 2 ~24 a OR a•] ! .

L _____________________ 08_'_

2·----- ------_;·.,..--P-3L,.;.,--- }:aA ~_jl i._ 1-----~4 __________ j :~ : .__~=====:=====~===:=~~:=:~~~~~~~===~:~==~:: l;!lotON

J3L J3A - ..., ...,.21

·~~~ .... ~.~------------------------~----~~~~~ TL.~-------------------------~----+---~-v_~~·L-~----~81 ~-).TO~~~ rOVIDED

TEitM. STRII'

r>28

n.56 ..., ,..,.27

1!5 :_;,o r 20

..... 20

-.:29

Cl

Fie. 2- ••JttJal Uldt:

SECTION 512-621-4

MTGa>RO

T7A Til A

SPARE { !BR-W)

(BR-Y)

(8R-Rl (BR-G)

T _LK_ ( 81<·01 TOTELSE OR TO i.m <f AUX RELAY\ CKT FOR U WITH750A 7~!1A PBX !FIG. IO)

(BK)

TO · CONTROL

UNIT (AG.I OR2)

SE OR

Fl

s PI

M2

AI

Ml

(G-Y) (Y)

(O·BK) (R}

(BL-R) (:BL)

(BI<-S) W)

(Y-O) G)

(S-BK) (BR- BL),

TERM, STRIP KEY AND VOLUME

I CONTROL ON-MUTE 3

6 .. ~ ...... -1

II OFF

10

8

4

.! Rl7

MOO

Rl5 Rl6 13,000 3000

5

9

2

NOTE: ~ESISTAtll.:t. VALUES Ak~ IN Oh,~S, 'APki:IIANU VALUI:.S ARE · IN ~~~ CllUFA~AliS, UNlt.SS 01 Ht.HWI S£ SPI:.C If I t.o.

XMTR AND LAMP

ACII

51 A LAMP

ON~ Rl4 lBO

Fi&. 3 - 666A Transminer

Pag~ Revlltd

PRINTED WIRING BOARD \

Cl ' 11.0 Rl 300

R5 1 R4

261 2710 r,r±\ 01 R6 128 R2

271< I BOO I~ R3

~2 . IOK

8.0

R7

6800 C3 RB

02 1\

_ 47 lf~2B .0.0!) RIO R9

l 4300 9100 C4

~~~ C5 \

100 Rll 2400

Rl2 03 2200 120

C6 200 C7

1\ 0.01

T

Rl3 0 .11

< MEG

~

ca 00~ ro-

T7A NTG CORD

TERM. STRIP

KEV AND VOLUME CONTROL

ISS 5, SECTION 512.-620-400

XMTR AND LAMP PRINTED WIRING BOARD

OFF ON-MUTE I

~ lf • 1...[4--+----11--A-C_I ~-=·r:~r·_IO-+---IH-...-.-C~~{~-,--1--C-1 --rt7_R_I_· -t-.---,

TO TEL SET OR K.T.U. t .. -· ~RELAY :LK~--~tiB~K~-O~l-~---~~8--~--~

•·CI(T . FOR USE. ,.. Wl'rH 750A OR ~SA P8X (FIG.IO)

'"'' t,J. d.1(_.cFL-I_.l::: ((G....!-YL......jll---<~(0-7!.....-------' or¥ l~s~~- ~~o-~~~~~~--~Q· ~s~l------~

TO· CONTROL UNIT (FIG. I OR 2l

.+. Rl7

RIS Rl6

~JV pA~I~NL·-~~~-· ~--~~6~1----~------+-~-J~ YIJ M2 IBK·SI ~3

RS R4

R6 R3

l R7

C3 R8

.RIO R-9

C4 l Rl4

Rl2

C6 T C7

tJfll Ll! M!!.ll_..,liS~·-1110~-t' f---j~~··t__._ ________________ --lf--------_J

'

NOTE: RESISTANCE VALUES ARE IN CH'IS, CAPACI TANCE VALUES ARE IN MICROFARADS, UNLESS OTHERWI SE SPECIFIED.

Fig. 4- 6668 Transmitter

Rl3

R2 ca

~f+-NOTE

Rll

SECTION 512-62~480

TG M co

CONNECTOR RD TERMINALS

~ hl6

~ 37

I~ 42 ~ PI L~ 12~

TO CONTRO

UNIT (F'IG.I OR

1 ~ 14 17

TO TEL SET

P3 P4 AG

Tl Rl LK AI

18

~ I~ 13 ~ 38 ~ I( 41 ~ 1(40

~ !..=--7 )1!1

10·01 (Y-GI

(O-BL) (G-Y) (0) IO·YI

IO,:Gl (Y-8L)

(O·Rl. · (BL-Y) c-o·.JK> (Y-O)

(Yl (0-V)

667A 6678 XMTR XMTR

I

KEY AND VOLUME CONTROL

ON-MUTE

•

OF'F'

T

-~RI7 '1!1000

NOTE: RESISTANCE VALUES ARE IN OII!St CAPACITANCE VALUES ARE IN MICROfARADS, UNLESS 0 HERWISE SPt.CIFIEII.

XMTR AND LAMP

A82[): ~ 1 I

!51 A LAMP

ON@_

I

PRINTED WIRING BOARD

Cl Rl K + \ -

D r.o 300

B 1 R R!l R4

147 2710~01 M R6 128 R2 27,000

N

~~ 1800 R3

Rl4 J + ~,2_ 10,000 220

P'- 7.0 R7

6800 R8 C3

~\ 012 47 0.0(1=~128

RIO R~

T 4300 9100

C4 +,-

.~'o +cs_ 1\

100 Rll

IG 2400

H Rl5

13,000 (i-~?23

0 Rl2 A

2200

Rl6 C6 200 C7 3000

+I~- ~·~I c +"- T

Fll. 5 • 661-Type Transmitter

Pap 8

Rl3 0.11 MEG

a 0002 ::~

ISS 5, SECTION 512~20-400

SPADE TIP LEADS KEY AND VOLUME XMTR AND LAMP PRINTED WIRING BOARD CONTROL

g

k

d Cl

"' IS-BKI C8 " Ml f

51A ~~3'" I-NOTE 2 Rl PI (BL"Rl

~~ ::: J. Ill b y R5 R4 1-

.·(/DQI 0 a Rl7 h z Ill p h u RG

~ Rl5 Rl6 Rl4 17 T- R2 1- f - " ... (I) M2 (BK-Sl 9 R7 m ..J

R3 Ill 1-

Ill AI (Y-Ol R8 C3 C!l (I)

~ #1)2 (I) C4

..J OFF ON-MUTE . c r ~ z ,.. ,.._-- ... RIO R9 5

Rll

a: Ill 1-

IG-Yl [\_ cr;; I:!

Fl

P-2~EOI7 l " LK- (0-Y) ~y. s (O·BKI ~

1\ 1 ~~Q3 R12

' XMTR UNif"' -, ; C7

NOTE 1: THE oo9A TRANSMITTER IS DESIGNED FOR MOUNT-ING INS I DE CERTAIN TELEPHONE SETS. SEE SECTIONS COVERING CONNECTIONS FOR PARTICULAR TELEPHONE SET.

NOTE 2: RES I STANCE VALUES ARE IN Otfo1S. CAPACITANCE VALUES ARE IN Ml CROFARADS. UNLESS OTHERIJ I SE SPEC IFIED.

Fig. 6 - 669A Transmitter

Page 9

SECTION 512-620·400

SET TO TEL OR K.T AUX RE CKT F WITH 7 OR 7l55A (FIG.IO

.u. ( LAY LK OR USE 50 A

PBX )

(FI

5

T9A MTG CORD

IBK-Ol

(G-Y)

(O-BK)

MTR TO 1171-TYPE X OR XM IF PROV (FIG. 8)

TRS IDED

(~ ~rHIEL~ (SEE

ROL TO CONT UNIT (FIG. I OR 2)

Page 10

AI (Y-o)

_M_2 IBK-Sl

PI IBL-R)

Ml (S-BK)

'

TERM. STRIP

,.a "-'

,.,7 ~

,.,5

CONDUCTOR ES Ia~-

......

"-..~& ......

,.,3

,.,z ......

,-,.I "-'

KEY AND VOLUME XMTR AND LAMP PRINTED WIRING BOARD CONTROL

ROTATE AUX

ON-MUTE OFF DISC rh Rl ~ ~ + Cl

r ~1 CIO ~~ \.

ACI

R5 R4 RIS R2 ::: C8

RS ~1t Rll

1 X C2 NOTE 3

lt7

51 A ~~ 1'18

1 ... ~ruoz Rl7

. RIO It&

Rl5 Rl6 C4 I Rl4

Cf,5

/ Rll

Rl2 ct1L3 C& r 1\

crz 1\

NOTE 1 : THE SH I ELOEO CONDUCTOR OF HTG CORD T9A HAS TWO LEADS (THE SHIELD AND THE CONDUCTOR) . THE SHIELD IS THE LONGER OF THE TWO LEADS. CONNECT SHIELD Of THE HTG. CORD TO SHIELD OF CONDUCTORS FROM THE 671 XIITR OR XHTRS.

NOTE 2: E~CH b7DA XMTP. UNIT IS LIMITED TO NO !~ORE THAN FIVE AUX ILIARY TRANSIIITTER UNITS. (671-TYPE XMTRS).

NOTE 3: RESISTANCE VALUES ARE IN 0111S, CilPACITA~CE VALUES ARE IN MICROFARADS, UNLESS OTHERWISE SPECIFIED .

Fig. 1 - BlOA Transminer

ISS 5, SECTION 512-620-400

SHIELDED CONDUCTOR

TERM. STRIP AND COMPONENT

BOARD

XMTR

3

NOTE 1: T~E SHIELDED CONDUCTOR IS NOT A PART DF THE TRANSMITTER, AND MUST BE OBTAINED SEPARATELY.

NOTE 2: CONNECT SHIELD TO TERMINAL 3 AND CONDUCTOR TO TERMINAL 4.

NOTE 3: RESISTANCE VALUES ARE IN OHMS, CAPACITANCE VALUES ARE IN MICROFARADS, UNLESS OTHERWISE SPECIFIED.

NOTE

ACI XMTR UNIT

Ftg. 8 - 611 A Transmlner

[:' _ __.-......___

,f] TO KEY TEL SYS lA OR IAI KEY AND TEL CKT I 29 I 0

MIO I

23 I I I

I 24 EBM8 i ! 0 25

I 0 I 26

27 EBM6 I ! 0 28

I 0 I I 39

13o M4 f I; 2

L ~ UMS 0 I

I -20V PART~227A~

Fig. 9 -Station Busy-Lamp Control Circuit

G o• ••o] TO LAMP PWR SUP.

BAT. OR ±

BLJ TO FIG. I OR 2

Page II

SECTION 512-620-400

L TO KEY TEL [ SYS lA OR IAI STA BUSY LAMP LG

CIRCUIT [ TO LAMP PWR SUP.

G OR GND

BAT. OR±

TO FIG . eLK 3 OR 5

227 KTU

II

1

0~----------------jlL+~-E~~-M-8-------------el~ I 14

0~----------------~! : E B M6 16

~-~~~=---------------00 M4 ___l_._o

f I 5 CAl

20 --~6 o----r:-I fMIO I

21 : i EBM6 _.....v 22 ! 17

f I 18 I

EBM8 f : IJ 0

:5 0 ___l_._o

10 1 4 M4 f I - 20V

I~ 8 I I ;'2

CA2

0 :53 0 :54 0 :55 0 :56

:57 v 0 38

MIO f' J 29 0 1..---23

24 I t EBM8 l l

261 25 ! I EBM6 f' : I

~ -zt 28

I 39 M4 f 40

MSQ

-20V 2

---

Fig. 10- Auxiliary Relay Circuit tor Use with 150A or l55A PBX

Page 12 12 Pages

AG J TO FIG. I OR 2 GRD

G )

TO 750A OR 755A PBX STA CKT

TRI

BL j 'omsn