7
KX-TS620BX1
4 Technical Descriptions
4.1.
Block Diagram (Base Unit)
T1
D
3
, D5
C1
PC1
R1
IC1
D4
, D6
Speaker
Q1
0
3
, Q
1
04
D7
, D9
T
R
Q
401
D
8
, D
1
0
M
IC
D
3
06
D
3
04
IC
304
Q
701
Q
7
02
6.5V
DC Po
w
e
r
IC
903
IC
902
IC
303
, Q
3
01
LC
D
IC
305
H
and
s
et / H
e
ad
s
et
MIC
SP
IC
904
Q4
0
2
Q
108
Ri
nger i
ndi
c
a
ti
on LE
D
LE
D 804 (1A
P
- S
U
B
)
IC901
DSP M
ICON
NS
BBI
C
JOHN SMITH
1
234567890
Key
boar
d
Sw
itc
h
RINGER
IC
BEL
L
Line
O
N/OFF
H
and
s
et
Sending
Am
p
H
ead
s
et
D
e
tection
FLA
S
H
ME
MO
R
Y
CIDI
N+
CIDI
N -
V
SP-Phone
Am
p
MI
C -
LS
R +
Head
s
et
DE
T
MI
C +
LS
R -
LI
N
E
I
N
-
L
INE
OUT
Sidetone
Bridge
Re
g
.
1.8V
R
eg.
3
.2V
RS
T
n
VDD,
A
V
D
VDDI
O
VB
A
T
2
Re
s
et IC
Re
g
u
lator
4.0V
Re
g
u
lator
4.0V
ACFL
Pow
e
r Dow
n
D
e
tection
KX-TS620 BLOCK DIA
GRAM