Panasonic KX-TG8551CAB / KX-TG8561CAB / KX-TGA855RUB Service Manual ▷ View online
73
KX-TG8551CAB/KXTG8561CAB/KX-TGA855RUB
13 Schematic Diagram
13.1. For Schematic Diagram
13.1.1. Base Unit (Base Unit (Main))
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 (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.
2. The schematic diagram may be modified at any time with the development of new technology.
13.1.3. Charger Unit (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.
74
KX-TG8551CAB/KXTG8561CAB/KX-TGA855RUB
13.2. Base Unit (Main)
13.2.1. KX-TG8551CA
EEP_WP
ACFL
CHARGE_DET
SCL2
SDA2
SDA2
KEYIN1
KEYIN1
+3.0_CP2
+3.0_CP
RA501
220
1
2
3
4
JTAG
R506
NC
GND
UTX
URX
RSTN
C505
0.1u
C510
NC
C511
1u
C512
NC
R508
10
C513
0.1u
R507
100k
STM/CKM/P15
VDD5
VDD4
C509
2.2u
C858
100p
+2.85V
C822
10p
RF_TXp
R806
220
C826
10p
R807
220
TXON
ANT1
L803
4.7n
C810
1p
C809
10p
C855
10p
ANT2
C808
NC
C812
10p
RF_TXn
RXON
C813
1p
C857
10p
C811
10p
C837 0.9p
ANT_1
RF_RXp
C823
100p
C856
100p
ANT_2
C805
2.4p
DA801
1
2
3
ANT2_TP
12
C804
1.8p
ANT1_TP
12
RF_RXn
C806
2.4p
L802
4.7n
C820
0.7p
C864
7p
C863
7p
C803
1.5p
C802
1.8p
DA802
1
2
3
Shield
1
2
6
7
9
11
3
4
5
8
10
12
+2.85V
STM
R503
NC
R504
10k
R505
1k
C825
10p
C525
NC
SW501
1
2
3
4
+5.5V
R502 2.2k
C524 0.1u
IC501
29
NTC/ADC2
30
SOCp
31
SOCn
32
CHARGE_CTRL
33
P1_7/CHARGE
34
DP1/PAOUTp/P3_1
35
VDD_PA
36
DP0/PAOUTn/P3_0
37
ULP_XTAL
38
CP_C1x
39
CP_C2x
40
CP_C1y
41
VBAT_CP
42
CP_C2y
43
CP_VOUT1
44
CP_VOUT2
45
PON/P1_6
46
VDD1
47
P2_7/BXTAL
48
P1_5/INT5/RDI/VDDE
49
P1_4/INT4/TDOD
50
P1_3/INT3/SIO
51
P1_2/INT2/SK
52
P1_1/INT1/LE
53
P2_6/WTF_IN
54
P0_7/SPI_DI/PWM1
55
P0_6/SPI_DO
56
P0_5/SPI_CLK
57
P0_4/SPI_EN
58
P0_3/SCL2/URX2
59
P0_2/SDA2/UTX2
60
P0_1/URX/PWM0
61
P0_0/UTX
62
RSTn
63
JTAG
64
P2_5/PCM_FSC/SF
65
P2_4/SCL1/PCM_DO/DP3
66
P2_3/SDA1/PCM_DI/DP2
67
P2_2/PCM_CLK/CLK100
68
WLED_CUR_0
69
WLED_CUR_1
70
WLED_CUR_2
71
P2_1/ECZ2/PWM1/LED4
72
P2_0/ECZ1/PWM0/LED3
GND
C851
10p
C853
10p
ANT2-Short
ANT2-S-GND
C531
10p
C532
10p
C508
1u
C507
1u
C533 10p
Balun
W 0.15mm
L 20+/-2mm
3rd layer
L 20+/-2mm
3rd layer
W 0.15mm
L 5.0mm
1st layer
L 5.0mm
1st layer
BPF
W 0.15mm
L 20+/-1mm
3rd layer
L 20+/-1mm
3rd layer
Pre-matching
W 0.15mm
L 22+/-4mm
1st or 4th layer
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 22+/-4mm
1st or 4th layer
L 22+/-4mm
1st or 4th layer
W 0.125mm
L 7.6mm
Gap 0.125mm
1st layer
L 7.6mm
Gap 0.125mm
1st layer
W 0.15mm
L 20+/-2mm
3rd layer
L 20+/-2mm
3rd layer
W 0.15mm
L 22+/-4mm
1st or 4th layer
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 5.0mm
1st layer
L 5.0mm
1st layer
ANT Matching
Pattern
ANT
ANT
(1)
(2)
1/2
Rx RF
Tx RF
75
KX-TG8551CAB/KXTG8561CAB/KX-TGA855RUB
KX-TG8551CA SCHEMATIC DIAGRAM (Base Unit (Main))
QSPI_CS
QSPI_IO3
K
C
S
_
I
P
S
Q
2
O
I
_
I
P
S
Q
QSPI_IO1
QSPI_IO1
QSPI_CS
QSPI_CS
EEP_WP
QSPI_IO0
ACFL
SCL2
SDA2
CHARGE_DET
QSPI_IO2
QSPI_IO0
QSPI_SCK
QSPI_IO3
QSPI_SCK
QSPI_IO3
RF_TXp
TXON
RF_TXn
R891
220
RF_RXn
ANT1
RF_RXp
C520
NC
C502
1u
C503
10p
L1T
L1R
R311
10k
C104
0.01u
C107
0.01u
R106
1M
C108
0.01u
R105
1M
R104
180k
R102
4.7M
R103
180k
C103
0.01u
R101
4.7M
R312
10k
+1.8V
R107
1k
R108
1k
C1
1
0
820p
R1
1
0
82k
C109
820p
R109
82k
C611
0.1u
R611
10k
C516
0.1u
C515
NC
C514
10p
ANT2
R892
220
+3.0_CP
+2.4V
R121
1k
3
1
1
C
u
2
8
0
.
0
R11 1
3.9k
R1
1
2
120k
C1
1
1
0.033u
R125
270
R178
3.3k
C172
10p
*R355
680
*R354
10k
CHARGE-
C351
1u
CHARGE+
DCP
+5.5V
F301
3.0A
CHG+
DCM
+3.0_CP
C517
0.1u
C518
0.1u
C501
0
.1u
C123
10p
C1
1
2
10p
C124
10p
C125
10p
*Q351
CHG+
+3.0_CP2
D361
NC
AK
D362
A
K
C352
NC
*R352
56k
*IC351
2
VIN
1
VOUT
3
NC
4
VSS
*R351
3.9k
*R373
1.8k
R358
10k
+1.8V
R371
1
(0.5W)
R372
1
(0.5W)
C519
0.1u
C311
1u
C312
1u
VDD1
VDD2
X501
10.368M
1
3
2
Q301
Q302
R360
56k
+1.8V
R166
8
.2k
R144
TP10
D142
NC
AK
Q142
B
C
E
R151
100k
GAP
R161
100k
3
7
1
C
u
1
.
0
R181
NC
C181
NC
*Q144
R152
470k
C184
K1.0u
C168
NC
D101
4
3
1
2
*R148
680
R142
2.7k
(3216)
Q161
B
C
E
27k
TP9
SA103
NC
2
1
C165 NC
C142
K0.01u
Q141
B
E
C
*R145
2.2k
*R147
10k
R141
100k
C163 NC
C152
0.01u
C859
10p
RXON
R703
1k
*Q701
B
E
C
*R701
*C701
NC
R702
10k
R314
0.1
C346
1
80p
+5.5V
R316
0.1
VDD3
R320
NC
R310
680
C341
1
u
Q311
NC
C322
100u
16
R313
330
R315
0.1
R317
22k
C323
0.01u
+2.85V
C344
2
20p
*C345
_
1000
C321
NC
D302
NC
C34
2
1
000u
6.3
C34
3
NC
R3
1
94
.7
k
R318
12k
C530
NC
L2R
L2T
C121
NC
D104
NC
A
K
R120
NC
D103
NC
AK
C120
NC
*C141
*C143
NC
R1
1
7
100k
C1
1
6
100n
R11 6
5.6M
R11 5
5.6M
C1
1
5
100n
R1
1
8
100k
D132
NC
D133
NC
D153
NC
RA101
1
k
1
23
4
*C167
*R160
0
7
4
*C164
*C171
*R164
k
7
.
2
R143
NC
(3216)
*R146
10
+5.5V
+5.5V
+5.5V
+2.85V
+2.85V
+2.85V
+2.85V
RA601
1
0k
1
2
3
4
D141
C301 0.1u
C353
N
C
*Q702
C186
560p
R353
22k
R359
10k
C702
1000p
GND1
GND1
LINE_DC
+1.8V
C161
10u
C363
N
C
C362
N
C
IC611
128k
1
A0
2
A1
6
SCL
7
WP
3
A2
8
VCC
4
GND
5
SDA
Q352
Q354
Q310
IC302
C174
2200p
R501
56k
F
*IC502
32M FLASH
1
*CS
2
DO/IO1
6
CLK
7
*HOLD/IO3
3
*WP/IO2
8
VCC
4
GND
5
DI/IO0
1
VSS_LNA1
2
RF_RXn
3
RF_RXp
4
VSS_LNA2
5
RFP1
6
RFP0
7
REF_RES
8
AVS_XTA L
9
XTAL2
10
XTAL1
11
AVD_XTA L
12
RF_SUPPLY1
13
PARADET/P3_4
14
RINGOUT/RINGING/P3_5
15
RINGn/P3_6
16
RINGp/P3_7
17
CIDINp/P3_2
18
VREFp
19
CIDINn/MICp
20
CIDOUT/MICn
21
MICh
22
VREFm
23
LSRp
24
LSRn
25
AV
D
26
LDO_CTRL
27
ADC0/P3_3
28
ADC1/INT0/P1_0
73
VDD2
74
LDORF_CTRL
75
RFP0n
76
RF_SUPPL
Y
2
77
RF_SUPPL
Y_P
A
78
RF_TXn
79
RF_TXp
80
RFP2
97
IC501
81
ONE_CELL
83
DC_DCI
82
DC_SENSE
84
DC_CTRL
85
VBAT
86
DC_CTRLN
87
ULP_MAIN
88
ULP_VBAT
89
ULP_PORT
98
DUMMY1
99
DUMMY2
100
DUMMY3
101
DUMMY4
102
DUMMY5
103
DUMMY6
104
DUMMY7
105
DUMMY8
106
DUMMY9
107
DUMMY10
108
DUMMY11
109
DUMMY12
11 0
DUMMY13
11 1
DUMMY14
11 2
DUMMY15
11 3
DUMMY16
90
QSPI_IO3
91
QSPI_SCK
92
QSPI_IO0
93
VDDIO
94
QSPI_IO2
95
QSPI_CS
96
QSPI_IO1
C166
N
C
+5.5V
R168
4.7k
L301
22u
*R16
9
*R16
24
7
k
*R170
R163
12
(0.5W)
R167
27
(0.5W)
SA101
2
1
P101
C101 680p
C102 680p
C105
680p
C106
680p
(GREEN)
(YELLOW)
RX
TX
DC_IN
3V DCDC convertor
DC Monitor
IC501
GND
NC
NC
NC
NC
NC
NC
0.033u
0.0012u
R165
0.027u
470
(1)
(2)
2/2
Caller ID
Bell Signal
Bell Signal
Bell
Signal
Signal
Loop current
Tx AF
Rx AF
Tx RF
Rx RF
Cha rge Current
!
76
KX-TG8551CAB/KXTG8561CAB/KX-TGA855RUB
13.2.2. KX-TG8561CA
SPI_DI
SPI_DO
SPI_CLK
TAM_CSn
SPI_DO
SPI_CLK
TAM_CSn
MSG_LED
SCL2
ANS_LED
TAM_CSn
SPI_DI
SPI_CLK
SDA2
SPI_DO
LCD_BLT
KEYIN2
KEYIN1
CHARGE_DET
KEYS_D
MSG_LED
ANS_LED
KEYIN2
KEYIN3
KEYIN3
EEP_WP
ACFL
KEYS_C
KEYS_E
LCD_RST
LCD_CS
LCD_CD
LCD_DO
LCD_CD
LCD_DO
LCD_CLK
LCD_BLT
KEYS_C
KEYS_D
KEYS_E
KEYS_D
KEYS_E
TAM_WP
TAM_WP
KEYIN1
KEYIN3
R602
560
R604
560
R601
3.3k
R606
10k
R603
560
+3.0_CP2
+3.0_CP
RA501
220
1
2
3
4
JTAG
R506
NC
GND
UTX
URX
C478
10p
C477
10p
SPN
SPP
C472
10p
C473
10p
RSTN
+3.0_CP2
C505
0.1u
C506
2.2u
C510
NC
C511
1u
C512
NC
R508
10
C513
0.1u
C603
0.01u
C602
NC
C601
0.1u
KEYS_E
LCD_SID
LCD_CD
LED_VDD1
ANS_LED
LCD_BLT
L661
NC
C662
NC
LCD_VDD
LCD_SCL
C654
NC
MSG_LED
C665
NC
C664
NC
C651
NC
L664
NC
KEYS_C
LCD_CS
C653
NC
KEYS_D
KEYIN3
LED_VDD2
LCD_GND
L665
NC
C657
NC
C666
NC
C655
NC
C656
NC
C652
NC
KEYIN1
C663
NC
KEYIN2
LCD_RST
+3.0_CP2
L662
NC
L663
NC
C661
0.1u
D473
NC
AK
D472
NC
AK
C474
2200p
C475
2200p
R507
100k
STM/CKM/P15
VDD5
VDD4
R474
1
R475
1
C476
150p
C479
150p
C509
2.2u
C858
100p
+2.85V
C822
10p
RF_TXp
R806
220
C826
10p
R807
220
TXON
ANT1
L803
4.7n
C810
1p
C809
10p
C855
10p
ANT2
C808
NC
C812
10p
RF_TXn
RXON
C813
1p
C857
10p
C811
10p
C837 0.9p
ANT_1
RF_RXp
C823
100p
C856
100p
ANT_2
C805
2.4p
DA801
1
2
3
ANT2_TP
12
C804
1.8p
ANT1_TP
12
RF_RXn
C806
2.4p
L802
4.7n
C820
0.7p
C864
7p
C863
7p
C803
1.5p
C802
1.8p
DA802
1
2
3
Shield
1
2
6
7
9
11
3
4
5
8
10
12
+2.85V
R605
270k
Q650
STM
R668
560
RA653
1k
1
2
3
45
6
7
8
+3.0_CP2
R665
10k
R503
NC
R504
10k
R505
1k
C825
10p
C525
NC
C381
1u
C383
1
u
IC381
4.0V
1
VIN
2
VSS
3
ENB
5
VOUT
4
NC
C382
NC
IC601
16M FLASH
1
*CS
2
DO/IO1
6
CLK
7
*HOLD/IO3
3
*WP/IO2
8
VCC
4
GND
5
DI/IO0
R650
1.2k
Q601
+5.5V
C524 0.1u
R502 2.2k
IC501
34
NTC/ADC2
35
SOCp
36
SOCn
37
MIC2n
38
MIC2p
39
CHARGE_CTRL
40
P1_7/CHARGE
41
DP1/PAOUTp/P3_1
42
VDD_PA
43
DP0/PAOUTn/P3_0
44
P4_5
45
P4_6
46
P4_7
47
CP_VBAT1
48
CP_C1x
49
CP_C2x
50
CP_C1y
51
CP_VBAT2
52
CP_C2y
53
CP_VOUT1
54
CP_VOUT2
55
PON/P1_6
56
VDD2
57
P2_7/BXTAL
58
P1_5/INT5/RDI/VDDE
59
P1_4/INT4/TDOD
60
P1_3/INT3/SIO
61
P1_2/INT2/SK
62
P1_1/INT1/LE
63
P2_6/WTF_IN
64
P5_0
65
P5_1
66
P5_2
67
P5_3
68
P5_4
69
P0_7/SPI_DI/PWM1
70
P0_6/SPI_DO
71
P0_5/SPI_CLK
72
P0_4/SPI_EN
73
P0_3/SCL2/URX2
74
P0_2/SDA2/UTX2
75
P0_1/URX/PWM0
76
P0_0/UTX
77
RSTn
78
JTAG
79
P2_5/PCM_FSC/SF
80
P2_4/SCL1/PCM_DO/DP3
81
P2_3/SDA1/PCM_DI/DP2
82
P2_2/PCM_CLK/CLK100
83
P5_5
84
WLED_CUR_0
85
WLED_CUR_1
86
WLED_CUR_2
87
P2_1/ECZ2/PWM1/LED4
VSS/GND
RA651
1k
1
2
3
4
5
6
7
8
R663
1k
R664
1k
+5.5V
ANT2-Short
ANT2-S-GND
C853
10p
C851
10p
R666
NC
SW501
NC
1
2
3
4
C531
10p
C532
10p
C507
1u
C508
1u
R607
10k
R669
NC
+1.8V
R667 47k
L381
NC
10
1
1
8
Balun
W 0.15mm
L 20+/-2mm
3rd layer
L 20+/-2mm
3rd layer
W 0.15mm
L 5.0mm
1st layer
L 5.0mm
1st layer
BPF
W 0.15mm
L 20+/-1mm
3rd layer
L 20+/-1mm
3rd layer
Pre-matching
W 0.15mm
L 22+/-4mm
1st or 4th layer
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 22+/-4mm
1st or 4th layer
L 22+/-4mm
1st or 4th layer
W 0.125mm
L 7.6mm
Gap 0.125mm
1st layer
L 7.6mm
Gap 0.125mm
1st layer
W 0.15mm
L 20+/-2mm
3rd layer
L 20+/-2mm
3rd layer
W 0.15mm
L 22+/-4mm
1st or 4th layer
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 5.0mm
1st layer
L 5.0mm
1st layer
ANT Matching
Pattern
ANT
ANT
1/2
(1)
(3)
(2)
Rx RF
Tx RF
Beep Tone, Ringer Tone
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