AT&T BELL SYSTEM Touch-A-Matic 870A1 Identification, Installation, Connections, Operation, And Maintenance page 37

SECTION 501-164-201
FIG,
I
FIG,
G
VDD (R)
<
WDC (BK)
RCD (m)
L
(0-!.4) J2
(!J-s) !
(Y-G) ~~ ;
I
-5
%6
7
(w-o) !< B
(G-w) !<
(u-BR) ' ,:
J~
vGL
1
2
>;
Dll
SPR
3 >;
4*
OT
Pc
5 >:
6
SH
>1
7
CM
I
8 >;
DT
9
>;
VOD-1
10 >;
RESET
11 w
VR
12 y
VDO-2
B+
13 >;
14 >;
PF.3
15
NEG
1
1
1
17 >;
Pos
-1
?0
PL
FIG
G
BATTERY
KS-20590, L4
1
P4
B- (Y)
r
1 >
-EB
(6K) i
(6K) 1
=
+
B+ (R) 1
'4
B- (Y)
4),
I
(BK)
5 >:
(BK)
?,
I
1>
\ B+ (R)
1
I
NOTE :
OIAL FACTORY WIRED FOR @
AND @ CONNECTIONS OPTION:
@L4 THOUT OIAL TONE OETECTOR
@WITHOUT ONE-TOIJcH cALLING
@ ONE-TOUCHCALLING [ASSOCIATE TELEPHONE
MuST BE EOUIPPEO wITH SPEAKERPHONE)
FIG. B
PUR SUPPLYBWIKI
PSE (SEE NOTE)
1
I
(BR-U)
Al
(o)
(Wa)
2@
T1
I
30
(R-G)
&*
4@
[s-w)
PR
SPARE
(w-s)
SPARE
PB
I
10QJ
I I
(R-BL) RI
(o-w)
RI
INPuT
LT
T6
INPUT
17
l+QQ-1
;1
NEG
e
;1 CE
';
CE
;; c~
;ICC%?F
~
;1 CA
;1
cc
'; Cn
,,-
(G-W)
Wi
18@
F
- @!@
19Q
(o-Y)
DT
L
&
21
+@ 0,0 (R-O) Voo
(w-G)
vOD
22
STRAP (fiK)
FIG.
25@
c
- @,@
24@
(Y-o)
DR
I
(EL-v) PL
J
- @.@
25
(O-R;
P1
Jo. . @.@
26fl
(EL-Y;
D T1
27 (Y-BL)
SPR
STRAP
(s) S1
:~
FIG.
(s)
S2 ~
(BK-03
C OM
~o@
(Y)
AC1
710
(BK)
AC2
(BR) j2~ (w-BR)
'c
,, ,
53
-0
(Y-G)
LK
(G-w)
1. K
34
.0
(G-Y)
SPO
(W-G)
SPO
I
I
9
(BL-BK)
T1
550
FIG.
D
@ DIAL TONE DETECTOR ONLY
* INSULATE ANO STORE
Fig. 11 –$2870A1 Dial, Connections (Sheet 1 of 2)4
Page 40