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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

85
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
Memo
86
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
13.4. Schematic Diagram (Handset)
BATT+
BATT-
0.1
R45
BATTERY
+1.8V
GND
R65
NC
1k
R66
5.6n
F1
D8
C36
NC
C45
K0.1u
C121
NC
C35
NC
+1.8V
GND
1u
C47
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
C44
K0.1u
GND
1.2k
R7
100
R8
CP+4.0V [RU]
+1.8V
k0.1u
C40
RF_RXp
ANT2
PON
PSEL
VDD_PADRV
TXp
TXn
TXON
RXON
ANT1
RF_RXn
CP+3.0V
0
R215
Q7
Q2
Q4
C41 NC
BATTERY
0
*R252
NC
*R251
1u
C50
1u
C49
Q10
GND
CP+4.0V
CP+4.0V
DOWN
1     2
UP
1     2
SOFT_C
1     2
SOFT_B
1     2
SOFT_A
1     2
SHARP
1     2
AST
1
2
GND
8
1     2
TALK
1
2
R
1
2
4
1     2
7
1     2
3
1     2
9
1     2
SP
1     2
1
1     2
6
1     2
2
1     2
0
1     2
5
1     2
S1
1     2
100
R63
F56k
R203
10k
R64
BATTERY
NC
L8
GND
C147
1u
R4
NC
3.9k
R2
GND_0
C43
10p
C46
10p
150
*R310
150
*R309
150
*R308
C39
NC
GND
CP+3.0V
CP+3.0V [EX]
Q9
0
*R249
10
R20
D7
1k
R6
0
R31
*LED4
*LED9
*LED8
*LED6
*LED7
*LED5
*LED3
*LED2
*LED1
0
R12
LED12
D1
1M
R330
1u
C332
Q11
Q12
GND
GND
27k
R332
BATTERY
27k
R331
GND
GND
1k
RA1
1
2
3
45
6
7
8
GND
K10u
C53
K10u
C52
D10p
C54
GND
D10p
C55
K1u
C51
820
R27
K10u
C12
NC
*C17
K0.1u
C11
K0.1u
C13
NC
*R22
3.3k
RA4
1
2
3
4
VREFm
NC
*C18
D10p
C96
NC
*C16
820
R28
NC
*C14
NC
C7
D10p
C97
NC
*C184
NC
C48
1k
RA2
1
23
4
NC
*R25
0
R225
K2.2u
C10
27k
R30
560
*R300
560
*R301
560
*R302
560
*R303
560
*R304
560
*R305
6.3V
330u
CP2
C2
GND
NC
C4
GND
VREFm
RE2
RF-SHIELD
12
3
4
5
6
GND
UTX
URX
GND
JTAG
BAT
CP4.0V
CP3.0V
POWER
X_CLK
1.8V
CHG(+)
CHG(-)
K1u
C15
NC
C6
NC
L4
NC
L5
TEST
K0.1u
C5
NC
(    )
C3
NC
(    )
C150
220
RA61
1
2
4
3
6.3
330u
C1
CP1
1u
C331
C182
3p
X1
10.368M
1
3
2
10p
C138
NC
*R248
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
PARADET/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
PAOUTp/P3_1
34
VDDPA
35
PAOUTn/P3_0
36
VBAT1
37
CP_C1x
38
CP_C2x
39
CP_C1y
40
VBAT2
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
JTAG
63
P2_5/PCM_FSC/SF
64
P2_4/SCL1/PCM_DO/DP3
65
P2_3/SDA1/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_SUPPLY2
72
RFP0n
73
RFP4
76
VSS_PADR1
79
VSS_PADR2
77
RF_TXp
80
RFP2
75
VDD_PADR
78
RF_TXn
74
RFP3
GND
10p
C139
10p
*C38
LDO_CTRL
COL0
CHARGE_CTRL
SOCp
CHARGE
UTX
COL0
COL1
COL2
COL3
COL4
ROW2
ROW3
ROW2
ROW1
CHARGE
CHARGE_CTRL
COL1
COL2
COL4
KEY_LED
KEY_LED
ROW0
BELL_LED_A
URX
SOCn
LDO_CTRL
LCD_RESET
LCD_CD
LCD_SCL
LCD_SDA
JTAG
SOCp
LCD_CSB
ROW0
ROW3
COL3
ROW1
SOCn
BELL_LED_A
CHARGE
Terminal
BATTERY
KEY BACKLIT 
BELL LED
TO RF BLOCK
LCD BACKLIT
[EX]
[RU]
LCD BACKLIT
 (Amber) 
 (Amber) 
To PA
(MAX500mA)
KEY BACKLIT CP+3.0V (Amber) 
KEY BACKLIT CP+4.0V (Blue) 
LCD BACKLIT CP+3.0V (Amber) 
LCD BACKLIT CP+4.0V (Blue) 
study to 
Study LCD
driver
*IC1
(1)
(2)
(3)
(4)
(6)
(5)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(7)
NC: No Components
Charge Current
0.75V
0V
250mVp-p
3.0V 4.0V
TX _RF
RX _RF
1.8V
87
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
KX-TGA641  SCHEMATIC DIAGRAM (Handset_Main)
NC: No Components
10k
R40
10k
R41
BATTERY
GND
GND
10k
R42
GND
CP+3.0V
64k
1
A0
2
A1
3
A2
4
GND
5
SDA
6
SCL
7
WP
8
VCC
CP+3.0V
VREFm
NC
*C110
GND
GND
NC
*L71
NC
*C108
VREFm1
NC
*R306
VREFm
GND
Headset Jack
*CN4
NC
1
4
2
3
5
NC
*C82
NC
*C128
*L72
NC
NC
*C185
GND
VREFm1
NC
*L73
NC
*L74
VREFm1
NC
*R100
NC
*C127
NC
*C83
VREFm1
NC
R307
NC
*C86
VREFm
VREFm1
GND
NC
*L3
GND
VREFm
NC
*C111
VREFm
NC
*C109
0
*R35
0
*L9
NC
*R311
K1u
C188
10p
C70
D21
D22
10p
C71
GND GND
NC
C76
D10p
C113
VREFm
MIC+
VREFm
MIC-
NC
R313
GND
NC
R312
GND
GND
GND
D3
NC
2
1
D4
NC
2
1
NC
C77
VREFm
VREFm
0
R209
0
R208
D13
D14
GND
D10p
C72
GND
D10p
C73
K0.1u
C172
GND
3.3n
C814
220
R806
GND
TXp
47
R805
GND
GND
VDD_PADRV
1k
R804
TXON
GND
10p
C825
GND
100n
C808
GND
PON
10p
C812
10p
C819
1k
R803
GND
BATTERY
GND
1
PSET
2
VCCS
3
PI
4
PIX
7
PSEL
8
POX
9
PO
10
VC C
11
GND
5
PRAMP
6
PAON
GND
TXn
10p
C809
PSEL
10p
C811
GND
GND
GND
GND
RF_RXp
RXON
GND
GND
GND
GND
RF_RXn
220
R807
NC
C837
10p
C827
GND
VSS
CN5
10
GND
CN5
1
RESETB
CN5
4
V0
CN5
11
VDD
CN5
8
SCLK
CN5
6
LCD_CSB
CN5
3
       A0
CN5
5
OPT_PWR
CN5
2
VDDA
CN5
9
SID
CN5
7
GND
CN5
12
k1000p
C152
GND_0 GND_0
GND_0
GND_0
DA801
1
2
3
27n
L801
2p
C802
2p
C804
1.5p
C803
AP1
MIC
1
2
SP-PHONE_SPEAKER
1
+
2
-
TP_ANT1
1
+
2
-
GND
3p
C861
10p
C822
0.7p
C820
2p
C826
100p
C103
3.3k
R53
C106
NC
10k
R54
GND
100p
C105
GND
GND
NC
C107
470
R51
GND
GND
GND
GND
2p
C187
2p
C186
GND
GND
NC
L804
1k
R55
1k
R52
10k
R50
1u
C175
R578
NC
GND
NC
*C33
NC
*R34
NC
*R33
NC
*R32
GND
GND
3.6n
L802
3.6n
L803
3.3p
C806
1.6p
C810
1.6p
C813
3.3p
C805
10p
C860
0.7p
C862
GND
R808
NC
VREFm
NC
C74
NC
C75
VREFm
GND
GND
NC
C78
NC
C79
82
R73
82
R74
10p
*C104
10p
*C580
3p
*C859
10p
*C863
10p
*C864
680
*R801
100
*R802
0.5p
*C834
LCD_CD
LCD_CSB
LCD_RESET
LCD_SCL
LCD_SDA
LSRp
LSRn
MICp
MICn
to LCD UNIT
VREFm
MICh
LSRp
HEADSET_DET
LSRn
LSRp
Pre-matching
W 0.15mm
L 4.0mm x2
1st layer
W 0.15mm
L 20+/-2mm
3rd layer
W 0.15mm
L 20+/-1mm
3rd layer
Balun
BPF
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 0.125mm
L 7.6mm
Gap 0.125mm
1st layer
IC3
IC801
(1)
(2)
(3)
(4)
(6)
(5)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(7)
RX_RF
TX_RF
TX _AF
RX-AF (Handset)
Sp-phone RX/Beep
88
KX-TG6421CAM/KX-TG6421CAT/KX-TG6422CAT/KX-TGA641RUM/KX-TGA641RUT
13.5. Schematic Diagram (Charger Unit)
J1
2
1
TP3
G
TP2
TP1
TP4
R1 10
D1
A
K
F1
SCHEMATIC DIAGRAM (Charger Unit)
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