Block Diagram (Handset) - Panasonic KX-TG4221N Service Manual

4.5.

Block Diagram (Handset)

Q4
CHARGE
BATTERY
BATTERY
CP+3.0 V
LED
(BELL)
CP_LED
LCD BACK LIGHT
CP+3.0 V
D7
C44
1.8V
D1
Q2
MIC
Receiver
Monitor SP
CKM/STM
CP+3.0 V
KX-TG4221N/KX-TG4222N/KX-TG4223N/KX-TG313SK/KX-TG4224N/KX-TG4225N/KX-TGA421N
IC3
X1
EEPROM
10.368 MHz
CHARGE
CHARGE_CTL
TXn
TXp
RESET
TXON
RXON
RF_RXn
RF_RXp
AVD
CP_VOUT2
LD0_CTRL
IC5
BBIC
VDDPA
MICp
MICn
VDD2
LSRp
VDD1
LSRn
CP_VOUT1
BELL_LED
PAOUTp
PAOUTn
CKM//STM
LCD
KEYS
KX-TGA421 BLOCK DIAGRAM (Handset)
19
ANT1
BATTERY
RF PART
CP_LED
BATTERY
1.8V
CP+3.0 V