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Model
KX-TG7851UAB KX-TG7851UAH KX-TG7861UAB KX-TGA785RUB KX-TGA785RUH
Pages
88
Size
6.65 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS PHONE
File
kx-tg7851uab-kx-tg7851uah-kx-tg7861uab-kx-tga785ru.pdf
Date
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Panasonic KX-TG7851UAB / KX-TG7851UAH / KX-TG7861UAB / KX-TGA785RUB / KX-TGA785RUH Service Manual ▷ View online

61
KX-TG7851UAB/KX-TG7851UAH/KX-TG7861UAB/KX-TGA785RUB/KX-TGA785RUH
12.2.4. How to Install the Shield Case
Note:
• If you don’t have special tools (ex. Hot air disordering tool), conduct the following operations.
• Shield case’s No. : PNMC1091Z
1. Put the shield case.
2. Solder the surroundings.
62
KX-TG7851UAB/KX-TG7851UAH/KX-TG7861UAB/KX-TGA785RUB/KX-TGA785RUH
12.3. Terminal Guide of the ICs, Transistors, Diodes and Electrolytic
Capacitors
12.3.1. Base Unit
12.3.2. Handset
B0JCDD000001
Anode
Cathode
C
B
E
B1ABDM000001, B1ADGE000012
B1GBCFYY0020, B1ABCE000009
Anode
Cathode
B0DDCD000001
*1 for KX-TG7861 only
PQVDRLZ20A
8
5
4
1
PNWI27861RUH
*1
PNWITG6721GH
B0ECKM000008
Cathode
Anode
B1ACGP000008
E
C
B
B
C
C
E
DSC7003S0L
C1CB00003837
1
(Reverse View)
C3FBLY000150
1
67
88
23
44
22
66
45
1
4
8
5
89 pin
(GND)
Cathode
Anode
3
2
1
4
C0DBEYY00102
B3AAB0000347
*1
Cathode
Anode
B0EDER000009
C
B
E
B1ADGE000012, B1ADCF000040
B1ABGE000011, 2SC6054JSL
B1GBCFGA0021
8
5
4
1
PNWIGA681EXR
B0JCDD000001
Anode
Cathode
C1CB00003837
1
C3FBMY000288
1
4
8
5
B3AFB0000570
(Reverse View)
Anode
Cathode
(Reverse View)
1
67
88
23
44
22
66
45
89 pin
(GND)
63
KX-TG7851UAB/KX-TG7851UAH/KX-TG7861UAB/KX-TGA785RUB/KX-TGA785RUH
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.
64
KX-TG7851UAB/KX-TG7851UAH/KX-TG7861UAB/KX-TGA785RUB/KX-TGA785RUH
13.2. Base Unit (Main)
13.3. KX-TG7851UA
SHORT
SHORT
SHORT
SHORT
SHORT
SHORT
TAM_CSn
KEYIN2
KEYIN1
CHARGE_DET
EEP_WP
KEYS_C
KEYIN3
KEYS_E
KEYS_D
SPI_DI
SPI_DO
SPI_CLK
TAM_CSn
SCL2
SDA2
QSPI_IO1
QSPI_IO2
QSPI_IO2
QSPI_IO1
QSPI_IO3
QSPI_SCK
QSPI_IO0
QSPI_CS
QSPI_CS
SPI_DO
QSPI_IO3
QSPI_SCK
QSPI_IO0
KEYIN2
KEYIN3
KEYS_C
KEYS_D
KEYS_E
KEYIN1
SPI_DI
SPI_CLK
MSG_LED
ANS_LED
C504
0.1u
R601 NC
+3.0_CP2
+3.0_CP
SPN
SPP
+3.0_CP
C505
0.1u
C506
2.2u
C510
NC
C512
NC
C51
3
0.1u
C601
NC
MSG_LED
KEYS_E
LED_VDD
C656
NC
KEYS_C
ANS_LED
C655
NC
KEYIN3
KEYIN2
KEYS_D
C652
NC
C65
3
NC
C657
NC
C654
NC
KEYIN1
STM/CKM/P15
VDD5
RF_TXp
ANT1
C855
10p
ANT2
RF_TXn
C857
10p
ANT_2
RF_RXp
ANT2_TP
12
ANT1_TP
12
RF_RXn
DA802
1
2
3
R504
NC
R505
1k
RA651
NC
1
2
3
4
5
6
7
8
R663
NC
R664
1k
ANT1-Short
ANT1-S-GND
C851
10p
C853
10p
C508 1u
IC501
33
CHARGE_CTRL
47
QSPI_IO2
48
QSPI_IO1
49
QSPI_CS
50
VDDIO_QSPI
51
QSPI_IO3
52
QSPI_SCK
53
QSPI_IO0
54
VDD1
55
P2_7/BXTAL
76
P2_2/PCM_CLK/CLK100
77
WLED_CUR_0
78
WLED_CUR_1
3
4
P1_7/CHARGE
3
5
P
3
_1/DP1/PAOUTp
3
6
VDDPA
45
CP_VOUT2
46
P1_6/PON
56
P1_5/INT5/RDI/VDDE
57
P1_4/INT4/TDOD
58
P1_3/INT3/SIO
74
P2_4/SCL1/PCM_DO/DP
3
75
P2_
3
/SDA1/PCM_DI/DP2
3
7
P
3
_0/DP0/PAOUTn
59
P1_2/INT2/SK
GND
3
8
CP_VBAT1
3
9
CP_C1x
40
CP_C2x
41
CP_C1y
42
CP_VBAT2
4
3
CP_C2y
44
CP_VOUT1
60
P1_1/INT1/LE
61
P2_6/WTF_IN
62
P0_7/SPI_DI/PWM1
63
P0_6/SPI_DO
64
P0_5/SPI_CLK
65
P0_4/SPI_EN
66
P0_3/SCL2/URX2
67
P0_2/SDA2/UTX2
68
P0_1/URX/PWM0
69
P0_0/UTX
70
VDD2
71
*RSTn
72
JTAG
7
3
P2_5/PCM_FSC/SF
IC502
8M FLASH (WSON)
1
*CS
2
DO/IO1
6
CLK
7
*HOLD/IO3
3
*WP/IO2
8
VCC
4
GND
5
DI/IO0
IC601
NC
1
*CS
2
DO/IO1
6
CLK
7
*HOLD/IO3
3
*WP/IO2
8
VCC
4
GND
5
DI/IO0
+3.0_CP
CP2.8V
C540
1u
D501
C651
NC
VBAT
+3.0_CP2
RA601
NC
1
2
3
45
6
7
8
C511
1u
C509
2.2u
SW501
1
2
VBAT
GND
C803
10p
GND
GND
C473
NC
C472
NC
C475
NC
D47
3
NC
AK
C476
NC
D472
NC
AK
C477
NC
R475
NC
C478
NC
C474
NC
C479
NC
R474
NC
URX
UTX
GND
STM
R502
3
.3
k
R507 33
k
CP2.8V
JTAG
RSTN
VDD4
E1
1
2
6
7
9
11
3
4
8
10
5
2
1
SHORT2
SHORT1
SHORT3
SHORT4
SHORT5
SHORT6
C806 2.2p
C805 2.2p
C820 1.5p
R511
1k
C518
10p
C661
NC
C660
NC
9
1
W 0.15mm
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 22+/-4mm
1st or 4th layer
ANT Matching
Pattern
ANT
MODEL
open-stub
SL
W=0.6mm
L=20.0mm
LPF
SL
W=0.2mm
L=20.0mm
Pre-matching
4layer GND
open-stub
SL
W=2.9mm
L=3.8mm
SL
W=0.3mm
L=6.5mm
*open-stub
SL
W1=0.2mm
L1=3.3mm
W2=0.7mm
L2=5.0mm
SL
W=0.3mm
L=6.95mm
open-stub
SL
W=2.0mm
L=10.8mm
*
C
C=3.6pF
10.5mm2
TX-balun
SL
W=0.3mm
L=39.0mm
open-stub
SL
W1=0.2mm
L1=3.3mm
W2=0.7mm
L2=4.3mm
RX-balun
SL
W=0.175mm
L=3.6mm
S=0.125mm
open-stub
SL
W=2.2mm
L=5.0mm
MSL
W=0.25mm
L=5mm
MSL
W=0.25mm
L=5mm
50ohm Line
L=4mm
MSL
W=0.25mm
L=2mm
MSL
W=0.25mm
L=2mm
50ohm Line
L=4mm
SHORT
SHORT7
R479
R476
NC
NC
1/2
(1)
(2)
(3)
Rx RF
Tx RF
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