Diagrams; Block Diagram -Base Unit Section - Sony SPP-A973 Service Manual

SPP-A973/A974
4-1. BLOCK DIAGRAM — BASE UNIT SECTION —
ANT4001
TELESCOPIC
ANTENNA
RF UNIT (BU)
RX AUDIO 4
10
TX DATA
1
PLL REF
RSSI
5
PLL EN 9
SER DATA OUT 8
SER CLK 7
RX PWR 3
RF POWER
11
TX PWR CONTROL
Q4001
J1002
BATT DET
Q1001
RECHARGEABLE
BATTERY
BP-T23
DC 3.6V
J1005
SPARE BATTERY
J1001
DC IN 9V
!
REG
U1001
J1003
CHARGE
TERMINAL
J1004
Q1007
HANDSET
CHARGE
Q1006
04
SECTION 4

DIAGRAMS

SYSTEM CONTROL
67 DSIN
TXDATA
64
68 PLL REF
79 APIN2
58 GPIO2/MONO2
EEPROM
U4002
CS 1 55 GPIO5/TST1
SK 2 63 SCLK
DI 3 62 SOUT
DO 4 59 SIN
57 GPIO3/MON3
48 XTAL2
X4001
18.4MHz
REG
49 XTAL1
U4005
S4001
DIAL MODE
56 GPIO4/TST0
T
P
S4002
VOL
D7
43 GPIO1
H
42 GPIO0
M
L
5V
74 VBAT
76 REG CTRL
2 DVCC1
POWER
CONTROL 78 AVCC1
Q4003
3.2V
CHARGE DET
14 P1.3
Q1008
– 21 –
U4001
83
APO
AON 84
P1.1 12
AIN 90 1
ADIN1 80 8
P1.0 11 14
AMP
U1003
FSK 89
RINGER 86
P1.4 15
DIGITAL TELEPHONE ANSWERING
U1
SPKRP
LIFMIN2
36
MICP
EAIN 88 39 LIFPOUT
ROW0-4
56 LE
COL0-2
P1.7
18 20 SCL
P6.2 5 21 SDA
P1.5 16 50 TI MA5
EXIN
P1.6 17 48 MA6
EXON
8 47 MA7
P6.5
D1 NEW CALL
P6.1 MA2
4
RESET
55 RSTN
D8 CHARGE
Q3
MA0
P6.0 3
MA1
D9 IN USE
P6.3 6 62 57 58 59 8
P5.4 34
S14
4 5 6 7 24
HANDSET
LOCATOR
P4.0 35
MEMORY
U3
T1001
HOOK DET
U1002
3
2
10
9
12
13 7
23
25
KEY MATRIX
14-18 ROW0-4
S1-S13
75-77 COL0-2
LED CONTROL
U1
12 PCLK
9
Q1-6,CD
10 11 SCLK
14 SER
11
LED DRIVE
6
Q3
D2,4,5,6
4
LED DRIVE
Q1,2
5
REG
+5V +2.8V
U2
– 22 –
D1007-1009
J1006
LINE
5
6
SPEAKER AMP
U4004
VIN VO1
5
SP1
4
VO2
8 SPEAKER
CD
1
U4003
MIC
D3
• Signal Path
: TX (To Tel Line)
: RX (From Tel Line)
: bell