Block Diagram -Handset Section - Sony SPP-A973 Service Manual
Cordless telephone sony spp-a973/ spp-a974
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Also See for SPP-A973:
- Operating instructions manual (115 pages) ,
- Operating instructions manual (115 pages)
Table of Contents
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4-2. BLOCK DIAGRAM — HANDSET SECTION —
ANT1001
HELICAL ANTENNA
RF UNIT (HS)
PLL REF
1
4
RX AUDIO
TX DATA
10
RSSI
5
PLL EN
9
SER DATA OUT
8
SER CLK
7
RF POWER
RX PWR
3
CONTROL
Q1006
RF POWER
TX PWR
11
CONTROL
Q1007
J1003
RECHARGEABLE
BATTERY
BP-T23
DC 3.6V
J1004
D1003,1004
J1001
REG
Q1010,1012
CHARGE
TERMINAL
J1002
CHARGE DET
Q1008
04
SYSTEM CONTROL
64 PLL REF
67
DSIN
TXDATA
68
79
ADIN2
58
GPIO2/MON2
CS
1
55
GPIO5/TST1
SK
2
63 SCLK
EEPROM
DI
3
62 SOUT
U1006
DO
4
59 SIN
48 XTAL2
X1001
18.4MHz
49 XTAL1
56 GPIO4/TST0
GPIO3/MON3
57
S103
VOL
H
REG
U1007
M
80
ADIN1
L
S102
(ROTARY ENCODER)
3.6V
13 P1.2
14 P1.3
15 P1.4
3.1V
2 DVCC1
POWER
CONTROL
78
AVCC1
Q1004
76 REG CTRL
11 P1.0
– 23 –
U1001
APO
83
AON
84
RINGER OUT
RINGER
86
Q1009
90
AIN
(LCD/KEY BACK-LIGHT)
LED DRIVE
P1.1
12
Q1002
LCD1001
LCD MODULE
P6.0
3
11
LCD DB4
4
12
P6.1
LCD DB5
P6.2
5
13
LCD DB6
6
14
LCD DB7
P6.3
LCD E
P1.5
16
10
17
9
LCD R/W
P1.6
LCD RS
P1.7
18
8
KEY MATRIX
S1004-S1022
30
P5.0
I
I
ROW0-ROW4
P5.4
34
P4.0
35
I
I
COL0-COL4
P4.4
39
SPP-A973/A974
U1005
SPEAKER
U1002
BUZZER
U1003
MIC
• Signal Path
: TX (To Tel Line)
: RX (From Tel Line)
: bell
– 24 –
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