Read Panasonic KX-T7665RU (serv.man3) Service Manual online
5
KX-T7665RU-B
4 Technical Descriptions
4.1.
Block Diagram
T
E
L Jack
DX
DP Jack
JK2
ASIC
IC2
H/S Jack
TO
LCD
(CN5)
EEPROM
IC5
JK1
Q1
PDX
0
PDX
1
PDR
Data
Communication
T1
Q2
Q3
DDX
0
DDX
1
DDR
Q4
Q6
Q5
Data
Communication
Po
w
e
r
IC1
Q
21,
L21
D3V
A3
V
OS
R
OS
X
O
EP0
OCK
DX
DR
BCL
K
FS
LE
D
D32~
D42
Q31~
Q3
5
NROW0~
3
CLM0~
5
Ke
y
SW1~
3
2
Hook
SW
JK3
Reset
IC7
S
peaker
P
hone
IC3
3.3V 5.0V
IC8,D63
CODEC
IC4
CP
U
IC6
Tone
DB0~
7
ADR0~
5
W
E
N,REN,INTN
SCK,
DATA
LCD-D4~
7
E,W
,RS
SCL,SDA
X1
LE
D
D43
D44
MIC
CN2
SP
CN1
CN3-CN4
MAIN P. C. Board
KX-T7665RU-B : BLOCK DIAGRAM
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