Read Panasonic KX-TG7851RUH / KX-TG7851RUJ / KX-TG7851RUR / KX-TG7852RU1 / KX-TG7861RUH / KX-TG7861RUW / KX-TG7862RU2 / KX-TGA785RUB / KX-TGA785RUH / KX-TGA785RUJ / KX-TGA785RUR / KX-TGA785RUW Service Manual online
14
KX-TG7851RU/KX-TG7852RU/KX-TG7861RU/KX-TG7862RU/KX-TGA785RU
4.5.
Block Diagram (Handset)
QSPI
FLASH MEMORY
IC4
Reset
Reset
Pin 71
SPEAKER
RECEIVER
MIC
CHARGE
CIRCUIT
Q2, Q3, Q4,
Q9, R8
CHARGE
CONTACTS
CHARGE(+)
CHARGE_CTRL
CHARGE_DET
EEPROM
SCL
SDA
BATTERY
TERMINAL
R45
VBAT
BATT-
1.8 V
Q1
1.8 V
LCD
CD
RESET
CSB
SDA
SCL
CPU
Analog
Front
End
D/A
A/D
3
5
3
7
21
22
17
18
3
4
33
66
67
3
2
24
44
45
7
3
6
3
64
77
76
ADPCM
Codec
Filter
DSP
Speech
Decoding
Speech
Encoding
BMC
Burst
Decoding
ANT1
Burst
Encoding
RF
PLL
MOD/DEMOD
1
2
87
86
RXn
ANT1
RXp
TXp
TXn
7
8
XTAL
X1
10.368
MHz
BATTERY
46
ON SWITCH
KEYPAD
Charge
Pump
ROWS
COLUMNS
CP3V
D3
CP2.8V
CP4V
57, 58, 59, 60
11, 12, 1
3
, 14, 55
47, 48, 51, 5
3
QSPI-IO 0-
3
BBIC
IC1
IC3
65
LCD-BACK LIGHT
KEY LED
61
LDO_CTRL
CP 3.0 V
CP3V
QSPI
Control
5 QSPI-SCK
4 QSPI-CS
TGA785 only
KX-TGA785/786 BLOCK DIA
GRAM (Handset)
CP 2.8V
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