Block Diagram - Handset Section - Sony SPP-A1071 Service Manual

SPP-A1070/A1071
5-2. BLOCK DIAGRAM – HANDSET Section –
A2
RF UNIT
RF TX DATA
PLL EN
PLL CLK
PLL I2C DATA
RX DATA
CAR DET/LOW BAT
EARO
SDA 5
EEPROM
SCL 6
U4
SP1
MIC
J8
I
MIC1
K1 – 21,
SW1, 2
KEY MATRIX
K1 K2 K3 K16 SW1
1 2 ABC 3 DEF TALK
VOL V
CID
K4 K5 K6 K17 K21
4 GHI 5 JKL 6 MNO FLASH SELECT
K7 K8 K9 K19
7 PQRS 8 TUV 9 WXYZ HOLD
K11 K10 K12 SW2
TONE 0 OPER #
VOL v
DIR
K13 K14 K15 K20 K18
ONE TOUCH PGM CHANNEL OFF
PAUSE
REDIAL
29 TX DATA
14 PLL EN
15 PLL CLK
16 PLL I2C DATA
17 I2C CLK
11 RX DATA
12 CAR DET
BUZZER 27
SYSTEM
CONTROLLER
U2
BACK LIGHT 30
CRADLE 9
RESET 8
V4 95
V3 96
D10 – 12
13 KEY INT
V2 97
V1 98
2 3 6 7
X2 X1
8MHz 32.768kHz
12 12
• SIGNAL PATH
: TX
: RX
LCD1
LIQUID CRYSTAL
DISPLAY MODULE
BUZZER
DRIVE BUZ1
Q4
D5, 6
LCD
BACK LIGHT
(A1071)
D14 – 17 B+
(KEY BACK LIGHT)
LED DRIVE
Q2
CRADLE
DETECT
Q1
D2
RESET SIGNAL
GENERATOR
Q3, 5
D7
+2.3V
REGULATOR
U3
+
CHARGE
TERMINAL
–
RECHARGEABLE
BATTERY PACK
(BP-T18)
3.6V 600mAh