PCB (KT1
&
KT4 Series Telephones)
Basic L 0 Version
R1
(21)
3
2
R18
R9
1M
T
R
2
R7
S10
C1�
2.2
R2
1k
TR1
OUT
SU
IC 1 a;1
02
(231
R3
130
XL1
C3 133)
R8
03
R4
1SO
LkM
100n
TMC 1302
9
IN
8 REF
14 DSC
CS
7 MIC
'
-
100n
Ratio
6
RS
11
EAR
S1
S2
S3
S4
SS
S6
S7
SB
S9
S1 0
.l.(11 .l(2) .l.(3)
.l..{4)
L(SJ .l.16)
.Lm
.L(8)
.L(9)
.l.IOl
33k
016
1231
c1s
(311
LkO
01S
9.1V
PLE
PLF
SKE
S
1
3
SKF
1221
PL02
B
L
inecord
C
onnec
to
2
087
Lkl PLC
SKC 1_Jt8
c
(171
(231
_
S11/1
LkG LkJ
(20)
�
S12
R11
100
S11/2
100
R16
1.1k
R17
1.1k
PLOS
A
BC1
BC2
=XL3
2
Tone
Caller
8
3
IC
2
o/1
1
119)
7
s
4
XL2
22
R20
30k
R19
100
4
PL04
LkH LkK
116)
3.3k
SK
G
1
1
(161
ri-
PLH
�
2
Message Waiting
Numbers
in
brackets () refer to explanatory paragraphs
not used 6
FIGURE 2: Basic LD Version - Circuit Diagram
