9
KX-TG4753B/KX-TG470B/KX-TGA405B
4.2.
Block Diagram (Base Unit_Main)
Operational P.C. Board
D101
CHARGE_CONTAC
T
+
-
SP
X501
13.824 MHz
MIC
+-
ANT
2
ANT
1
TEL JACK
L1T
L1R
DCP
DCM
DC JACK
RLY
SIDE TONE
CIRCUIT
Q161
Q141
BELL
DETECT
HOOK
BELL
Q111
LIN
LOUT
RF_PART
HSMIP
HSMIN
IC501
BBIC
INUSE
DETECT 2
INUSE
DETECT 1
RECEIVE
AMP
DCIN 1
DCIN 2
IC302
VCCPA
VBAT_APU
VBAT
VCC_FE
VCC_IF
VCC_VCO
PDN DET
CHARGE_DET
3.0V
DOUBOUT
SCL, SDA
WP
VDD
ANS_LED
SP_LED
IC601
FLASH
MEMORY
IC611
EEPROM
MEMORY
KEYS
LCD
R151,R152
R131, R133
Q171
VBAT
DL,CS
MSG_LED
LCD_BLT
KEY 1
MIP
MIN
6
KEY A~E
CS_CDSID
SCL_RST
SPOUTN
SPOUTP
3.0 V
REGULATOR
CLK,DO
STM/CKM
R371
R372
Q701, Q702
CHARGE
DETECT
VCCA
VCC
KX-TG4753 BLOCK DIAGRAM (Base Unit_Main)
ANT2
ANT1
RXp
RXn
RXON
TXp
TXn
TXON
RESET
RSTN