Read Panasonic KX-TG6451CAT / KX-TGA641RUT Service Manual online
7
KX-TG6451CAT/KX-TGA641RUT
4 Technical Descriptions
4.1.
Block Diagram (Base Unit)
T
E
L Line
D101
Q
111/Q115
RLY
T
ra
n
si
st
o
r
RLY
T
ra
n
si
st
o
r
RLY
T
ra
n
si
st
o
r
RLY
T
ra
n
si
st
o
r
-
+
~
~
-
+
~
~
Hook
SW
Hook
_C
T
R
L
Puls
e
Q
112/Q114
Q
131
LSRp
Side
T
one
Ci
rcu
it
TP
1
0
TP
9
MI
C
h
P3_6
P2_1
Fil
te
r
-
+
~
~
-
+
~
~
Ringer
IC
CIDINp
CIDINn
R
ingi
ng
Fil
te
r
D161
IC101
IC301
IC304
IC801
RF PA
3.75V
3.5V
Q
351
1.8V
2.5V
IC303
VDD/AVD
L
D
O_
CT
RL
RF_SUPPLY
4.3V
D138
BAT
Key
sw
itch
Ma
tr
ix
P5_5-0
P1_5-2
,P2_
0
LED
LED1-4
Q
6
01-Q
604
LC
D
M
odule
Serial
EEPRO
M
TA
M
I
C
IC201
X
511
X
tal
(10.368Mhz)
XT
AL1
XT
AL2
IC501
Hands
et
Spea
k
e
r
Mi
c
LCD_CS,LCD_CD,L
CD_RESET
Q6
0
5
-Q6
0
7
SPI_CLK,SPI_DO
CP_
VOUT
1
3.0V
2.5V
SCL2,SDA2
EEP_
W
P
SCL2,SDA2
P5_6
SPI_DI
P5_7
SPI_CLK,SPI_DO
KEY
5-0
RO
W
4
-0
G
P
IO
3-0
IC561
P4_7-5
BB
IC
BXT
AL
CL
K
CLK(10.2
68M
Hz
)
T
A
M
_
RESE
T
RST
2.5V
1.8V
2.5V
P3_0
PC
M
_
CLK,DI,DO,FSC
PC
M
_
CLK,DI,DO,FSC
PC
M
_
CLK,D
I,DO,FSC
VDDAVD.
VDDIO
VDD
LC
D
bac
kl
ight
3.5V_PD
3.5V_PD
VCC
SPI2_CLK,DI,DO
,EN
SPI2_CLK,DI,DO
,EN
IC
IC301
3.5V
Q
351
2.5V
IC303
3.5V_PD
IC
IC301
3.5V
Q
351
2.5V
IC303
Q
341
3.5V_PD
PC102
Ringer
DET
Q
331
PO
W
E
R_F
AIL
INT
1
DC
6.5V
Q
162
Q
608
3.2V_PD
3.2V_PD
VDDPA
22
24
29
85
27
26
30
30,20
54,89
19
12,91
42,45,50
10
9
61
82,7
5-71
57-60
,86
45-43
65,6
4
52
63
84
67,6
8
83
56
41
81-78
17-14
RX
o
n
RX
n
RX
p
VDD-PADRV
Tx
on
PSEL
Pon
TX
n
TX
p
BPF
ANT
1
ANT
2
ANT
1
ANT
2
D
A
801
D
A
802
6
5
3
2
95
97
98
93
94
100
92
RFP0
RFP1
RF_RX
n
RF_RX
p
VDD-PADR
RF_T
X
p
RF_T
X
n
RFP4
RFP3
RFP2
RFP0n
VCC
KX-TG6451 BLOCK DIAGRAM (BASE UNIT)
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