Block Diagram - Handset Section - Sony SPP-A2770 Service Manual

SPP-A2770
6-2. BLOCK DIAGRAM – HANDSET Section –
ANT201
RF61
(ANTENNA)
RF UNIT
RXAD PCM 13
8 ANT
TXAD PCM 12
PCMB CLK 15
PCM SYNC 14
POW DWN 17
RESET B 18
SPI EN 19
SPI CLK 20
SPI IN 22
SPI OUT 23
IRQ CAP 11
(JOG DIAL)
Ref No. PANEL DESIGNATION
K2 CALL WAITING/FLASH
K3 REDIAL/PAUSE
K4 INTERCOM
K5 PGM
K7 EZ ACCESS
K2 – K5, K7 – K21,
K8 HOLD/PLAY
K9 ERASE
K10 1/REPEAT .
K11 4 GHI
K12 7 PQRS
K13 TONE
K14 2 ABC
K15 5 JKL
K16 8 TUV
K17 0 OPER
K18 3 DEF/SKIP >
K19 6 MNO
K20 9 WXYZ
K21 #
S11 TALK
S16 OFF
• SIGNAL PATH
: RX
: TX
: BELL
CODEC
IC1
IR PCMRO PCMRI
24 23 22
ADPCM
IS PCMSI PCMSO
25 26 27
COMPRESSOR
29 BCLK
28 SYNC
20
SYSTEM CONTROLLER
CLOCK
GENERATOR
IC3
X31
10.368MHz
45 SS PWR DOWN CONT
46 SS RESET
47 SS SPI EN
1 SS SPI CLK
63 SS SPI DOUT
64 SS SPI DIN
52 SS IRQ
EEPROM
IC122
SDA 5 38 E2PROM SDA
SCL 6 37 E2PROM SCL
S2
PUSH ENTER
PUSH
12 JOG PUSH
JOG1
A
22 JOG A
B
23 JOG B
COL1, COL2,
S11, S16
COL3 – COL5
ROW2 – ROW6
SDA
2 LCD SDA
CS
3 LCD CS
SCL
4 LCD SCL
LCD201
LIQUID
CRYSTAL
DISPLAY LCD RS
19 LCD RS
PANEL
RESET
VFRO
PCM D/A
11
L. P. F.
EXPANDER CONVERTER
AIN–
PCM A/D
B. P. F. 3
CONVERTER
15
IC121
CODEC RESET 44
TX MUTE 43
INTERCOM CONT 34
RX MUTE 42
BUZZER DRIVE
RING OUTPUT 6
Q101
BUZZER VOL 30
SYSTEM CONTROLLER (IC121),
X121
CF2 58 6MHz
CF1 57
D122 – 124
(LCD BACK LIGHT)
LED CONT (LCD) 8
WD C127,
D125 – 128
WDT 49
TIMER R137
(KEY BACK LIGHT)
LED CONT (KEY) 7
RF UNIT
(RF61) B+
SS POWER CONT (STB) 28
CLOCK GENERATOR
(IC3) B+
SS POWER CONT (TALK) 29
AF AMP
(IC2) B+
SP AMP POWER CONT 27
LOW BATT DET 31
BATT POWER FAIL 51
CHARGE CONT 5
CHARGE DET 61
DIS CHG (WAKE UP) 48
WAKE UP 50
INTERMITTENT C126,
53
SCAN TIMER R136
RESET
SIGNAL
GENERATOR
IC123
26 26
RX
MUTING
Q4
ATTENUATOR AF AMP
Q3 IC2
H
S1
M
VOL
L
MIC AMP
Q5
TX
MUTING
Q2
EEPROM (IC122) B+
L1
CODEC
(IC1) B+
LED
DRIVE
Q121
LED
DRIVE
Q122
B+ SWITCH
Q61
B+ SWITCH
Q1
+3.3V
B+ SWITCH
REGULATOR
Q6
IC101, Q103
LOW BATTERY
DETECT
IC102
CHARGE
CONTROL
Q7
CHARGE DETECT CHARGE
WAKE-UP DETECT
Q105 Q104
J1
I
SP1
(SPEAKER)
MIC1
(MIC)
BZ101
BUZZER
RECHARGEABLE
BATTERY PACK
D102
(BP-T38)
DC3.6V
CHARGE
900mAh
CURRENT
CONTROL
Q102
+
CHARGE
TERMINAL
–