Panasonic KX-TDA0155CE, Service Manual, Page: 20 / 55

20
KX-TDA0155CE
3.
2V
3.
2V
3.
2V
IC
103 p
in21
AC
S
2
IC
103 p
in19
RD
N
IC
103 p
in42
D[
3
]
D3
R
2
V
P
A
_
V
3.
3V
R
F
2R
5V
5.
25V
3.3V 2.5
V
3.
2V
DC
DC
O
U
T
1.8
V
1.
5V
D1
R
8
V
D1
R
5
V
40V
5.
25V
DC
DC
IN
DC
DC
O
U
T
40V
IC
203 p
in
2
IC
203 p
in
7
3.
2V
T
101 p
in
2
PD
R
3.
2V
3.
2V
IC
104 p
in39
PD
X
1
IC
104 p
in38
PD
X
0
3.
2V
3..
2V
3..
2V
3.
2V
IC
104 p
in26
HW
_F
H
IC
104 p
in25
HW
_C
L
K
IC
104 p
in20
HW
_UP
IC
104 p
in21
HW
_D
N
3.
2V
IC
103 p
in
7
1
PS
Y
N
C
C
heck
v
o
lt
a
g
e p
in 19 21 35 36 40-45 o
f
IC
103.
(
R
D
N
A
C
S
2
D
0-7
)
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t I
C
101.
Re
p
la
ce I
C
101 i
f s
o
ld
er
in
g
is
O
K
.
C
heck
v
o
lt
a
g
e p
in 20,
21,
25,
26 o
f I
C
104
(HW
_UP
HW
_D
N
HW
_C
L
K
HW
_F
H
)
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t R
201,
R
202,
R
203,
R
2
04,
C
2
00,
C
201,
C
2
02,
C
203,
Q
200.
C
heck
v
o
lt
a
g
e p
in 38,
39 o
f I
C
104
(PD
X
0
,PD
X
1
)
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t I
C
104.
Re
p
la
ce I
C
104 i
f s
o
ld
in
g
is
O
K
.
C
heck
v
o
lt
a
g
e p
in 2 o
f T
101 (P
D
R
)
C
heck
s
o
ld
er
co
nd
iti
o
n a
b
o
u
t a
ro
u
nd
p
a
rt
s
a
n
d
I
C
104,
R
1
51 R
254,
R
2
94.
R
e
p
la
ce I
C
104 i
f s
o
ld
in
g
i
s
O
K
.
C
heck
P
S
Y
N
C
p
in71 o
f I
C
103
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t I
C
103,
R
490,
R
830.
R
e
p
lac
e
I
C
1
0
3
if
s
o
ld
in
g
is
O
K
.
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t I
C
101.
Re
p
la
ce I
C
101 i
f s
o
ld
in
g
is
O
K
.
W
hen r
e
p
la
c
in
g
I
C
101,
the 9.
1.
4.
2.
C
S
ID
I
n
fo
rm
a
ti
o
n W
ri
ti
n
g
, t
he 9.
2.
3.
A
d
ju
s
tm
ent
fo
r 1.
8V
,
the 9.
2.
4.
A
d
ju
s
tm
ent
fo
r R
F
C
lo
c
k
, t
h
e 9.
3.
3
. A
d
ju
s
tm
e
nt
fo
r R
S
S
I a
n
d
9.
3.
4
. A
d
ju
s
tm
e
nt
fo
r
M
o
du
la
ti
o
n
a
re
r
e
qu
ir
e
d
.
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t I
C
103,
R
2
84
, R
2
85.
R
e
p
lac
e
I
C
1
0
3
if
s
o
ld
e
rin
g
is
O
K
.
C
heck
D
C
D
C
IN
( p
in8 o
f I
C
203 )
C
heck
v
o
lt
a
g
e p
in 2,
7 o
f I
C
203
C
heck
D
C
D
C
O
U
T
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t C
N
100,
T101
,L1
0
1
,L1
0
2
,D1
0
2
C
heck
D
1
R
8
V
C
heck
D
1
R
5
V
C
heck
RF2R5V
C
heck
PAV3.3V
C
heck
D
3
R
2
V
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t I
C
203
,
C
305,
C
306,
R
3
15,
D
301,
R
3
03,
R
3
04,
Q
3
0
2
Re
p
la
ce I
C
203 i
f s
o
ld
er
in
g
is
O
K
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t I
C
202
,
R3
01,R555,R556,C634,C636.
R
e
p
lac
e
I
C
2
0
2
if
s
o
ld
e
rin
g
is
O
K
.
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t D
3
03,
L
302
,
R
3
11
,R
312.
Re
p
la
ce D
3
03
,L
3
02 i
f s
o
ld
er
in
g
is
O
K
.
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t Q
3
20
,R
330
,
D320,R320. R
e
p
la
ce Q
320 i
f s
o
ld
er
in
g
i
s
O
K
.
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t Q
3
21
,R
331
R
3
3
2,R
3
3
4,C323,D321,R321.
Re
p
la
ce Q
321 i
f s
o
ld
er
in
g
is
O
K
.
C
h
eck
s
o
ld
er
co
nd
iti
o
n a
b
o
u
t I
C
200
,R
345,
R
8
33,
C
3
30.
R
e
p
lac
e
I
C
2
0
0
if
s
o
ld
e
rin
g
is
O
K
.
C
heck
s
o
ld
er
co
nd
it
io
n a
b
o
u
t I
C
201
,
R3
0
0
,C612,C615.
R
e
p
lac
e
I
C
2
0
1
if
s
o
ld
e
rin
g
is
O
K
.
Check DC voltage
( DC
DC
O
U
T
, D3
R
2
V
, D1
R
8
V
,
D
1
R
5
V
, PAV3.3V
, RF2R5V
)
ou
t of F
low
c
h
a
rt
F
ig.
PB
X
r
e
c
e
iv
e
si
gn
a
l (2
)
F
ig.
PB
X
r
e
c
e
iv
e
si
gn
a
l (3
)
F
ig.
H
igh
w
a
y
si
gna
l
F
ig
. S
y
n
c
h
ron
ou
s
s
ig
n
a
l
F
ig
. I
C
103(
F
P
G
A
) a
c
ces
s
Fi
g
. D
C
vo
lt
ag
e
(s
tar
t u
p
)
F
ig.
D
C
v
o
lt
a
g
e
(st
a
rt
u
p
)
Fi
g
. D
C
vo
lt
ag
e
(s
tar
t u
p
)
F
ig
. DC
DC
IC
c
h
e
c
k
W
hen r
e
p
la
c
in
g
I
C
101,
the 9.
1.
4.
2.
C
S
ID
I
n
fo
rm
a
ti
o
n W
ri
ti
n
g
, t
h
e 9.
2.
3.
A
d
ju
s
tm
e
nt
fo
r 1.
8V
,
the 9.
2.
4.
A
d
ju
s
tm
e
nt
fo
r R
F
C
lo
c
k
, t
he 9.
3.
3
. A
d
ju
s
tm
ent
fo
r R
S
S
I a
n
d
9.
3.
4
. A
d
ju
s
tm
ent
fo
r
M
o
du
la
ti
o
n
a
re
r
e
qu
ir
e
d
.
Make sure to set all DIP switches OFF after measurement.
1
2
NG NG
NG NG NG NG NG NG NG NG NG
NG NG
OK OK OK OK
OK OK OK OK OK OK OK OK OK
P
o
w
er is supplied b
y
the A
C
adaptor and each v
oltage can
be chec
k
ed with a tester
. When using the A
C
adaptor
,
the maxim
um v
o
ltage of IC203 pin8 (DCDCIN) and pin 7 is
the same as the v
oltage output of the A
C
adaptor
.