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Model
KX-TG6421CAM KX-TG6421CAT KX-TG6422CAT KX-TGA641RUM KX-TGA641RUT
Pages
106
Size
2.62 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS ANSWERING SYSTEM
File
kx-tg6421cam-kx-tg6421cat-kx-tg6422cat-kx-tga641ru.pdf
Date
PREV: Panasonic KX-TG6412CAM / KX-TG6422CAT / KX-TG6412CAT / KX-TG6412RU1 / KX-TG6422RU1 Service Manual / Supplement

Panasonic KX-TG6421CAM / KX-TG6421CAT / KX-TG6422CAT / KX-TGA641RUM / KX-TGA641RUT Service Manual ▷ View online

81
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
13 Schematic Diagram
13.1. For Schematic Diagram
13.1.1. Base Unit (Schematic Diagram (Base Unit))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. The schematic diagrams may be modified at any time with the development of new technology.
13.1.2. Handset (Schematic Diagram (Handset))
Notes:
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagram may be modified at any time with the development of new technology.
13.1.3. Charger Unit (Schematic Diagram (Charger Unit))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. The schematic diagram may be modified at any time with the development of new technology.
82
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
13.2. Schematic Diagram (Base Unit)
3.0V
2.5V
TX _RF
TX _RF
RX _RF
Beep
Bell signal
GND
SPm
SPp
GND GND
GND
*C505
NC
*C502
NC
*SW1
NC
1
2
GND
NC
*C501
GND
+3.0V
100
R75
270k
*R425
UTX
URX
GND
ANT_1
ANT2
NC
C854
ANT1
GND
GND
ANT_2
GND
NC
C850
GND
GND
0
R511
0
*R542
0
*R516
0
*RA501
1
2
3
4
5
6
7
8
1k
R76
0
*R532
ANT1_TP
ANT2_TP
GND
GND
GND
1u
C616
GND
+3.0V
GND
AP1
*CN5
.
PARALLEL WIRE
GND
10k
R77
R78
NC
GND
+2.5_CP
1u
C625
*C503
NC
NC
C430
GND
CL1
CL2
GND
10p
C81
1
GND
100n
C808
GND
GND
GND
PON
1k
R804
RF_RXp
RF_RXn
GND
GND
GND
TXp
GND
10p
C819
220
R806
GND
TXn
GND
PSEL
3.3n
C814
10p
C825
VDD_PADRV
TXON
1k
R803
GND
1
PSET
2
VCCS
3
PI
4
PIX
7
PSEL
8
POX
9
PO
10
VCC
11
GND
5
PRAMP
6
PAON
GND
GND
GND
RXON
220
R807
10p
C809
GND
47
R805
GND
10n
*C421
GND
GND
10k
*R424
NC
*C423
GND
*Q421
VDD5
GND
100n
*C422
560
*R426
560
*R427
560
*R428
3.3k
*R429
GND
10k
*R135
GND
10
R430
10p
C827
GND
GND
C859
10p
10p
C855
10p
C857
100p
C856
100p
C858
10p
*C145
10p
*C146
10p
C812
10p
C630
10p
C631
GND
GND
10
100n
C60
CLK
GND_C
*Q24
NC
*C504
NC
GND
NC
C506
+1.8V
C837
NC
CN5-10
CN5-9
CN5-8
CN5-7
CN5-6
CN5-5
CN5-4
CN5-3
CN5-2
CN5-1
1.5p
C803
27n
L801
DA802
1
2
3
DA801
1
2
3
10p
*C51
1
10p
*C512
10p
*C513
10p
*C514
10p
*C515
10p
*C516
C853
2p
1.8p
C804
1.8p
C802
Shield
12
3
4
5
6
3n
L802
3n
L803
GND
C851
2p
10p
C822
3.3p
C805
3.3p
C806
2.2p
C810
2.2p
C813
VDD4
*C163
NC
10p
*C517
10p
*C518
10p
*C519
GND
C520
NC
GND
JTAG
3p
C860
GND
10p
C861
GND
1.5
*R86
1.5
*R87
220
RA80
1
2
3
4
NC
*R132
2.2n
*C149
2.2n
*C150
GND
GND
100p
C823
GND
0.9p
C826
0.75p
C820
120
R802
0.5p
C834
1
*CE
2
SO
3
*WP
4
VSS
5
SI
6
SCK
7
*HOLD
8
VDD
1.5k
*R808
1.5k
*R801
SDA2
SCL2
TAM_CSn
SPI_CLK
TAM_WP
KEY0
KEY1
ROW1
ROW2
KEY2
ROW0
LED1
CHARGE
TAM_WP
SPI_DI
SPI_DO
SPI_DO
TAM_CSn
SPI_DI
SPI_CLK
Low_Rad
LED2
ROW1
ROW2
KEY0
KEY1
KEY2
ROW0
ROW0
for TG8421/6421
for TG6411/8411
CP_OUT1=3.0V
Pow_Adj
Pre-matching
Balun
BPF
W 0.15mm
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 5.0mm
1st layer
W 0.15mm
L 5.0mm
1st layer
W 0.15mm
L 20+/-2mm
3rd layer
W 0.15mm
L 20+/-2mm
3rd layer
W 0.15mm
L 20+/-1mm
3rd layer
W 0.125mm
L 7.6mm
Gap 0.125mm
1st layer
W 0.15mm
L 4.0mm x2 1st layer
IC801
*IC421
(1)
(2)
(3)
(4)
(5)
(7)
(6)
(8)
(9)
NC: No Components
83
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
1.8V
3.0V
TX _RF
RX _RF
TX _AF
Bell signal
Caller ID
0.75V
0V
250mVp-p
Loop Current
Charge Current
RX_AF
Bell signal
GND
GND
Q8
1u
C614
GND
+1.8V
GND
GND
GND
GND
56k F
R615
GND
GND
GND
SA1
L1
L2
GND
GND
J101
GND
GND
+8.0V
K2.2u
C31
GND
4
Fin
1
ADJ/GND
3
Input
2
Output
GND
GND
GND
10k
R16
GND
GND
GND
GND
NC
(3216)
R123
100k
R14
2.7k
R15
D3
4
1
3
2
GND GND
2.2k
R17
GND
NC
*C16
27k
R18
GND
K2.2u
C17
GND
0.1u
C28
100k
R27
K1u
C15
GND
TP10
100
R116
4700p
C14
8.2k
R19
100k
R23
+1.8V
NC
C18
GND
GND
GND
GND
GND
NC
C24
NC
C57
47k
R24
GND
GND
12
R21
GND
TP9
K0.22u
C23
470k
R28
K0.1u
C56
K0.22u C141
GND
GND
1u
C22
(1005) NC
C155
1k
R33
1k
R35
GND
GND
10p
C136
GND
100k
R10
GND
+1.8V
GND
GND
100k
R8
100n
C72
100n
C61
GND
3.3k
R81
3.3k
R117
+1.8V
1n
C157
TP16
TP15
NC
*C48
NC
*C156
GND
GND
GND
3.9
R55
GND
GND
100n
C51
GND
GND
GND
100n
C75
NC
*D16
A
K
D1
A
K
Q4
D23
NC
*D15
AK
+3.0V
2.2u
C84
C306
NC
1u
C305
GND
GND
1k
R130
10k
R129
3A
F1
*R2
NC
D21
10k
RA402
1
2
3
4
*Q23
NC
*D5
A
K
*D6
AK
D9
AK
1u
C615
Q9
+2.5V
+2.5V
GND
F 140
R39
F 100
R38
220
R106
220
R109
NC
C2
GND
C167
NC
VDD2
100n
C7
100n
NC
NC
C8
10p
C65
+2.5_CP
C623
NC
L2T
L1T
L1R
DCM
DCP
L2R
C12
NC
10p
C137
GND
C166
NC
100u
16
C32
50
10u
C27
*C49 NC
GND
10.368M
X1
1
3
2
120
R29
NC
D26
ANT1
RF_RXn
RXON
TXON
TXn
TXp
VDD_PADRV
PSEL
PON
ANT2
RF_RXp
GND
C626
NC
10
330u
C36
10k
R657
GND
GND
GND
GND
Q5
Q3
10p
*C148
10p
*C147
10p
C170
10p
C169
10p
C168
10p
C74
680p
C9
500
680p
C10
500
1k
RA1
1
2
3
45
6
7
8
*C622
NC
D22
LINE_DC
NC
*R126
HAK_CL1
3.9
R56
TEST
VDD3
VDD1
NC
C1
10p
C171
120k
R36
C617
1u 10
5p
C29
5p
C30
C37
5p
1M
R4
1M
R6
180k
R3
180k
R5
C5
10n
10n
C6
10n
C42
10n
C43
4.7M
R42
4.7M
R43
680p
C3
680p
C4
33n
C54
C55
82n
1k
R37
82k
R32
82k
R34
820p
C52
820p
C53
GND
10p
C70
1
VSS_LNA1
2
RF_RXp
21
CIDINp/VREFp
3
RF_RXn
4
VSS_LNA2
5
RFP1
6
RFP0
7
REF_RES
8
AVS_XTAL
22
RINGp/P3_7
23
RINGn/P3_6
24
RINGOUT/RINGING/P3_5
25
P
ARADET/P3_4
26
ADC0/P3_3
27
ADC1/INT0/P1_0
28
NTC/ADC2
41
CP_C2y
42
CP_VOUT1/LED1
43
CP_VOUT2/LED2
44
PON/P1_6
45
VDD1
46
P2_7/BXTAL
81
GND
9
XTAL2
10
XTAL1
11
AVD_XTAL
12
RF_SUPPLY1
13
LDO_CTRL
14
AVD
15
LSRn
16
LSRp
17
VREFm
18
MICh
19
CIDOUT/MICn
20
CIDINn/MICp
29
SOCp
30
SOCn
31
CHARGE_CTRL
32
P1_7/CHARGE
33
P
A
OUTp/P3_1
34
VDDP
A
35
P
A
OUTn/P3_0
36
VBA
T1
37
CP_C1x
38
CP_C2x
39
CP_C1y
40
VBA
T2
47
P1_5/INT5/RDI/VDDE
48
P1_4/INT4/TDOD
49
P1_3/INT3/SIO
50
P1_2/INT2/SK
51
P1_1/INT1/LE
52
P2_6/WTF_IN
53
P0_7/SPI_DI
54
P0_6/SPI_DO
55
P0_5/SPI_CLK
56
P0_4/SPI_EN
57
P0_3/SCL2
58
P0_2/SDA2
59
P0_1/URX
60
P0_0/UTX
61
RSTn
62
JT
A
G
63
P2_5/PCM_FSC/SF
64
P2_4/SCL1/PCM_DO/DP3
65
P2_3/SD
A1/PCM_DI/DP2
66
P2_2/PCM_CLK/CLK100
67
P2_1/ECZ2/PWM1/LED4
68
P2_0/ECZ1/PWM0/LED3
69
VDD2
70
LDORF_CTRL
71
RF_SUPPL
Y2
72
RFP0n
73
RFP4
76
VSS_P
ADR1
79
VSS_P
ADR2
77
RF_TXp
80
RFP2
75
VDD_P
ADR
78
RF_TXn
74
RFP3
*Q22
NC
*C25
0.047
NC
*R7
NC
*R9
*Q2
10
(3216)
*R124
10k
*R12
680
*R13
470
*R30
820
*R31
2.2k
*R20
27
R22
1
A0
2
A1
3
A2
4
VSS
5
SDA
6
SCL
7
WP
8
VCC
CHARGE
SCL2
SD
A2
EEP_WP
Lo
w_Rad
LED2
LED1
EEP_WP
DC_IN
Charge -
Charge +
TO RF BLOCK
IC1
*IC401
*IC7
(1)
(2)
(3)
(4)
(5)
(7)
(6)
(8)
(9)
KX-TG6421/6422CA SCHEMATIC DIAGRAM (Base Unit)
NC: No Components
84
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
13.3. Schematic Diagram (Base Unit_Operation)
KX-TG6421/6422  SCHEMATIC DIAGRAM (
Base Unit_Operation
)
NC: No Components
ANS1
1
2
STOP
1
2
ERASE
1
2
MSG2
1
2
MSG1
1
2
RPT
1
2
SKIP
1
2
UP
1
2
DOWN
1
2
LOCAT/INT
1
2
LED902
A
K
LED901
A
K
MEG_LED
KEYIN2
KEYS_B
ANS_LED
KEYS_E
KEYS_C
KEYIN1
2APVCC
KEYIN3
KEYS_D
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