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Model
KX-TG7341UAM KX-TG7341UAT KX-TGA731RUM KX-TGA731RUT KX-TGA731RUC KX-TGA731RUS
Pages
104
Size
2.9 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / TELEPHONE EQUIPMENT
File
kx-tg7341uam-kx-tg7341uat-kx-tga731rum-kx-tga731ru.pdf
Date
PREV: Panasonic KX-TG7341RUM / KX-TG7341RUT / KX-TGA731RUM / KX-TGA731RUT / KX-TGA731RUC / KX-TGA731RUS (serv.man5) Service Manual / Supplement

Panasonic KX-TG7341UAM / KX-TG7341UAT / KX-TGA731RUM / KX-TGA731RUT / KX-TGA731RUC / KX-TGA731RUS Service Manual ▷ View online

81
KX-TG7341UAM/KX-TG7341UAT/KX-TGA731RUM/KX-TGA731RUT/KX-TGA731RUC/KX-TGA731RUS
GND
GND
Q8
1u
C55
GND
+1.8V
GND
GND
GND
56k F
R64
GND
GND
GND
L2T
L1T
L1R
L2R
SA1
L1
L2
GND GND
J101
GND
GND
+8.0V
DCM
DCP
100u
16
C52
GND
IC1
4
Fin
1
ADJ/GND
3
Input
2
Output
VDD3
GND
GND
(1608)
NC
C54
GND
10k
R16
GND
GND
GND
GND
100k
R14
NC
C12
GND
2.7k
R15
D3
4
1
3
2
LINE_DC
GND
GND
2.2k
R17
27k
R18
GND
K2.2u
C17
0.1u
C26
100k
R27
K1u
C15
GND
TP10
100
R25
4700p
C14
8.2k
R19
100k
R23
820
R31
27
R22
+1.8V
NC
C18
GND
GND
GND
GND
GND
NC
C24
0.047u
C25
NC
C20
47k
R24
GND
GND
12
R21
GND
TP9
K0.22u
C23
470k
R28
K0.1u
C19
K0.22u
C21
GND
1u
C22
NC
C2
68k
R36
1k
R33
1k
R35
220p
C28
68k
R32
220p
C29
68k
R34
GND
1M
R4
10p
C13
K1000p
C6
180k
R5
GND
1M
R6
GND
10p
C11
180k
R3
K1000p
C5
GND
100k
R10
NC
R9
GND
+1.8V
GND
GND
100k
R8
NC
R7
100n
C62
GND
100n
C61
GND
3.3k
R61
3.3k
R26
+1.8V
1n
C58
TP16
TP16-sub
TP15
R53
NC
NC
1n
C56
1n
C57
GND
TP15-sub
3.3k
R52
GND
GND
GND
100n
C401
GND
GND
GND
100n
C64
ANT1
RXON
TXn
RF_RXn
RF_RXp
RXON
RF_RXn
RF_RXp
TXON
TXON
TXn
TXp
TXp
VDD_PADRV
VDD_PADRV
PSEL
PSEL
PON
PON
ANT2
+3.0V
D1
A
K
D12
Q4
B
C
E
Q2
B
C
E
Q5
D22
Q22
D23
+3.0V
100
R67
C67
NC
VDD1
1u
C66
GND
1k
R54
10k
R58
3A
F1
1k
R68
D21
10k
RA401
1
2
3
4
100n
 C7
100n
C8
Q23
R63
NC
D5 NC
A
K
D6
A      K
D9
A      K
1u
C59
Q401
+2.4V
+2.4V
GND
C402 1u 6.3
140
R51
100
R50
GND
R12
10k
R13
680
2.2k
R20
470
R30
10p
C65
10p
C63
DP1
DP0
EEP_WP
SCL2
SDA2
220
R65
220
R66
1k
R71
C69
NC
C70
N
C
1k
R72
1k
R73
1k
R74
+2.5_CP
GND
1u
C404
C403
NC
+2.5_CP +3.0V
NC
R402
R404
NC
GND
NC
R62
GND
C51
K1.0u
C50
K
1.0u
(3216)
10
R1
NC
(3216)
R2
NC
(6332)
R55
NC
C32
VDD2
VDD5
GND
Q3
1.5n
C3
1.5n
C4
680p
C9
680p
C10
50
10u
C27
22n
C30
0.1n
C31
120
R29
X1
1
3
2
JTAG
NC
C71
GND
10p
C33
GND
NC
C34
NC
C35
10p
C36
GND
10p
C37
10p
C38
10p
C72
GND
10p
C39
GND
NC
R37
C16
100n
C73
GND
CHARGE
10k
R405
SA2
NC
GND
10
330u
C53
R57
5.6
5.6
R56
D26
NC
3p
C74
*IC401
1
A0
2
A1
3
A2
4
GND
5
SDA
6
SCL
7
WP
8
VCC
IC7
4
VSS_LNA2
5
RFP1
6
RFP0
7
REF_RES
8
AVS_XTAL
9
XTAL2
10
XTAL1
11
AVD_XTAL
12
RF_SUPPLY1
13
VDD1
14
SPI2_EN/P4_0
15
SPI2_CLK/P4_1
16
SPI2_DO/P4_2
17
SPI2_DI/P4_3
18
P4_4
19
LDO_CTRL
20
AVD
21
LSRn
22
LSRp
29
RINGn/P3_6
30
RINGOUT/RINGING/P3_5
31
PARADET/P3_4
32
ADC0/P3_3
33
ADC1/INT0/P1_0
34
NTC/ADC2
35
SOCp
36
SOCn
37
CHARGE_CTRL
38
P1_7/CHARGE
39
DP1/PAOUTp/P3_1
40
VDDPA
41
DP0/PAOUTn/P3_0
42
VBAT1
43
P4_5
44
P4_6
45
P4_7
46
VBAT2
47
CP_C1x
54
PON/P1_6
55
VDD2
56
P2_7/BXTAL
57
P1_5/INT5/RDI/VDDE
58
P1_4/INT4/TDOD
59
P1_3/INT3/SIO
60
P1_2/INT2/SK
61
P1_1/INT1/LE
62
P2_6/WTF_IN
63
P0_7/SPI_DI
64
P0_6/SPI_DO
65
P0_5/SPI_CLK
66
P0_4/SPI_EN
67
P0_3/SCL2
68
P0_2/SDA2
69
P0_1/URX/PWM0
70
P0_0/UTX
71
P5_0
72
P5_1
79
P2_4/SCL1/PCM_DO/DP3
80
P2_3/SDA1/PCM_DI/DP2
81
P2_2/PCM_CLK/CLK100
82
P5_5
83
P5_6
84
P5_7
85
P2_1/ECZ2/PWM1/LED4
86
P2_0/ECZ1/PWM0/LED3
87
NC
88
VSS
89
VDD3
90
LDORF_CTRL
91
RF_SUPPLY2
92
RFP0n
93
RFP4
94
RFP3
95
VDD_PADR
96
VSS_PADR1
97
RF_TXn
1
VSS_LNA1
2
RF_RXp
3
RF_RXn
23
VREFm
24
MICh
25
CIDOUT/
MICn
26
CIDINn/MICp
27
CIDINp/VREFp
28
RINGp/P3_7
48
CP_C2x
49
CP_C1y
50
VBAT3
51
CP_C2y
52
CP_VOUT1/LED1
53
CP_VOUT2/LED2
73
P5_2
74
P5_3
75
P5_4
76
RSTn
77
JTAG
78
P2_5/PCM_FSC/SF
98
RF_TXp
99
VSS_PADR2
100
RFP2
101
GND
PCM_FSC
PCM_CLK
PCM_DO
PCM_DI
KEY5
EEP_WP
TAM_WP
TAM_RESET
Low_Rad
LED4
LED3
LED2
LED1
SPI2_DI
SPI2_DO
SPI2_CLK
TAM_EN
SCL2
SDA2
CHARGE
EEP_WP
DC_IN
Charge -
Charge +
To RF
 NC
NC
(1)
(2)
(3)
(4)
(5)
(7)
(6)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
(27)
(28)
(30)
(29)
(8)
Charge Current
Bell signal
Bell
signal
RX_AF
TX_AF
Caller ID, 
Bell Signal
Loop Current
0V
0.85V
TX_RF
RX_RF
1.2V p-p
3.0V
2.5V
1.8V
2.4V
KX-TG7341UA  SCHEMATIC DIAGRAM (Base Unit_Main)
NC: No Components
B3AEB0000116
B3AEB0000116
82
KX-TG7341UAM/KX-TG7341UAT/KX-TGA731RUM/KX-TGA731RUT/KX-TGA731RUC/KX-TGA731RUS
13.3. Schematic Diagram (Base Unit_RF Part)
RX_RF
RX_RF
TX_RF
TX_RF
VDD_PADRV
TXp
RF_RXn
RXON
TXn
TXON
PON
RF_RXp
PSEL
GND
D801
D802
GND
7p
C801
2.4p
C802
1.3p
C803
2.4p
C804
1k
R803
3p
C815
3p
C816
1k
R804
50
10p
C817
NC
50
10p
C818
NC
47
R805
100p
C822
220
R807
220
R806
IC801
1
PSET
2
VCCS
3
PI
4
PIX
7
PSEL
8
POX
9
PO
10
VCC
11
GND
5
PRAMP
6
PAON
1p
C806
NC
100n
C808
3.3n
C814
+3.0V
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
A_1
Pow_Adj
10p
C819
15p
C825
0.75p
C820
C807
NC
7p
C832
7p
C833
1.6p
C813
GND
GND
10p
C811
1n
L805
50
0.9p
C840
GND
C837
NC
4.7n
L803
10p
C809
R802
NC
50
10p
C113
C111
10p
50
GND
3.3p
C812
2.2p
C810
2.7n
L802
3.3n
L804
50
0.75p
C834
22n
L801
10p
C827
0.8p
C826
680
*R801
 TOP filter
  LPF
BB-PA
Power control
 isolator
 Rx Balun
Tx Balun
KX-TG7341  SCHEMATIC DIAGRAM (Base Unit_RF Part)
NC: No Components
83
KX-TG7341UAM/KX-TG7341UAT/KX-TGA731RUM/KX-TGA731RUT/KX-TGA731RUC/KX-TGA731RUS
13.4. Schematic Diagram (Base Unit_Operation)
LED2
SP-PHONE_LED
A
K
*LED3
ANSWER_LED
A
K
*LED4
NEW-MSG_LED
A
K
LED1
IN USE_LED
A
K
CN1-5
CN1-6
CN1-7
CN1-8
CN1-9
CN1-10
CN2-2
CN2-3
CN2-4
CN2-5
CN2-6
CN1-1
CN1-2
CN1-3
CN1-4
CN2-1
1
1        2
2
1        2
3
1        2
4
1        2
5
1        2
6
1        2
7
1        2
8
1        2
9
1        2
*
1        2
0
1        2
#
1        2
REDIAL
1        2
SP-PHONE
1        2
PAUSE
1        2
RECALL
1        2
MUTE
1        2
INT
1        2
AUTO
1        2
NEWMSG
1        2
RPT
1        2
SKIP
1        2
UP
1        2
DOWN
1        2
GREETING
1        2
ERASE
1        2
ANS
1        2
STOP
1        2
NEWMSG2
1        2
KEY5
KEY4
KEY0
KEY3
ROW3
KEY2
KEY1
ROW4
ROW2
ROW0
ROW1
KX-TG7341 SCHEMATIC DIAGRAM (Base Unit_
Operation
)
NC: No Components
84
KX-TG7341UAM/KX-TG7341UAT/KX-TGA731RUM/KX-TGA731RUT/KX-TGA731RUC/KX-TGA731RUS
13.5. Schematic Diagram (Handset)
BATT+
BATT-
0.1
R45
C34
NC
BATTERY
GND
UTX
URX
GND
POWER
CHG(+)
CHG(-)
BAT
R65
NC
1k
R66
5.6n
F1
D8
C149
NC
C36
NC
C45
K0.1u
C121
NC
C35
NC
C12
10uF
1u
C15
+1.8V
GND
1u
C47
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
C138
NC
GND
C44
K0.1u
0
R11
2.2u
C48
C150
NC
GND
GND
1.2k
R7
100
R8
CP+4.0V
+1.8V
k0.1u
C40
RF_RXp
ANT2
PON
PSEL
VDD_PADRV
TXp
TXn
TXON
RXON
ANT1
RF_RXn
CP+2.5V
CP2.5V
0
R215
Q7
Q2
Q4
C41
NC
BATTERY
K0.1u
C13
K0.1u
C11
R46
NC
R47
NC
R237
NC
R244
NC
0
*R252
NC
*R248
NC
*R251
3.3k
RA4
1
2
3
4
1u
C50
1u
C49
GND
Q12
GND
VREFm
820
R28
820
R27
GND
GND
VREFm
CP4.0V
CP+4.0V
CP+4.0V
DO
WN
12
UP
12
RIGHT
12
LEFT
1
2
INT
12
SOFT_C
12
R.
12
SOFT_B
12
SOFT_A
12
SHARP
12
AST
1
2
1u
C51
GND
RG+3.1V
RG+3.1V
DD+4.0V
NC
R247
R250
NC
R260
NC
NC
R257
DD+4.0V
X_CLK
GND
RG+3.1V
GND
R1
NC
3.1V REG
NC
1
VIN
2
VSS
3
CE
5
VOUT
4
NC
GND
NC
1
CE
2
VOUT
3
NC
5
EXT
4
GND
NC
C6
GND
L1
NC
C101
NC
C4
NC
DD+4.0V
GND
GND
C3
1u
1k
R233
1k
R238
1k
R235
1k
R234
8
12
TA
L
K
1
2
CANCEL
1
2
4
12
7
12
3
12
9
12
SP
12
1
12
6
12
2
12
0
12
5
12
S1
1
2
R258
NC
100
R63
1k
RA61
1
2
3
4
C38
NC
56k
R203
F
10k
R64
R16 NC
0
R18
0
R19
0
R17
BATTERY
10u
L4
10u
L5
L8
C7
NC
C8
NC
C9
NC
GND GND
GND
GND
4.7u
C183
FET/DIODE
NC
1
G
2
S
3
K
4
A
5
NC
6
D
470
R23
C147
1u
R4
NC
3.9k
R2
0
R270
JTAG
560
*R304
560
*R302
GND_0
C43
10p
C46
10p
0
R10
R9
NC
C20
NC
GND
+3.0V
GND
1k
R15
C22
NC
C21 NC
NC
1
VIN
2
C+
3
C-
4
ON/*OFF
5
GND
6
VOUT
GND
150
*R310
150
*R309
150
*R308
C39
NC
GND
CP+2.5V
CP+2.5V
3.3p
C182
Q9
6.3
330u
C2
CR2
0
R5
C5
NC
X1
1
3
2
560
*R300
560
*R301
560
*R303
560
*R305
0
*R249
10
R20
D7
27k
R30
1
VSS_LNA1
2
RF_RXp
21
CIDINp/VREFp
3
RF_RXn
4
VSS_LNA2
5
RFP1
6
RFP0
7
REF_RES
8
A
V
S_XT
A
L
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_V
OUT1/LED1
43
CP_V
OUT2/LED2
44
PON/P1_6
45
VDD1
46
P2_7/BXT
AL
81
GND
9
XT
AL2
10
XT
AL1
11
A
VD_XT
AL
12
RF_SUPPL
Y1
13
LDO_CTRL
14
AV
D
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/SD
A2
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
1k
R6
0
R31
100p
C96
100p
C97
*LED4
*LED9
*LED8
*LED6
*LED7
*LED5
*LED3
*LED2
*LED1
0
R12
LED12
C52
10uF
C53
10uF
D1
6.3
100u
C1
CR1
LDO_CTRL
COL0
SOCn
CHARGE_CTRL
SOCp
CHARGE
LCD_RESET
UTX
COL0
COL1
COL2
COL3
COL4
RO
W
3
RO
W
2
RO
W
1
RO
W
3
RO
W
2
RO
W
1
ROW0
CHARGE
CHARGE_CTRL
COL1
COL2
COL3
COL4
COL5
RO
W
0
BELL_LED_A
KEY_LED
LCD_SCL
LCD_CD
LCD_SD
A
JTAG
URX
KEY_LED
BELL_LED_A
COL5
SOCn
SOCp
LCD_CSB
LDO_CTRL
CHARGE
Terminal
BATTERY
BBIC
KEY BACKLIT 
BELL LED
NC: No Components
TO RF BLOCK
LCD BACKLIT
[EX]
[RU]
[RU]
[EX]
LCD BACKLIT
DCDC_REG_CS
To PA
IC13
IC10
IC11
IC20
*IC1
(1)
(2)
(3)
(4)
(5)
(7)
(6)
(9)
(10)
(11)
(12)
(8)
Charge Current
0.75V
0V
250mVp-p
2.5V 4.0V
TX _RF
RX _RF
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Display

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