Sony NW-E305 Service Manual page 24

NW-E305/E307
• IC Block Diagrams
– MAIN Board –
IC1 TEA5767HN
IGAIN
32
GAIN
STABILIZATION
AGND 33
34
VCCA
RESONANCE
AMPLIFIER
1/Q-MIXER
÷
2
1st FM
N1
IF CENTER
RREQUENCY
ADJUST
35
RFI1
AGC
RF GND 36
RFI2 37
TAGC
38
programmable divider output
LOOPSW TUNING SYSTEM
39
reference frequency divider output
VCO
2 3 4 5
IC401 RV5C348A-E2
32K OUT 1
32kHz
OUTPUT
CONTROL
SCLK
2
DIVIDER
DIV
CORRECTION
SO 3
SI 4
VSS 5
OSC
INTERRUPT
CONTROL
OSC
DETECT
NW-E305/E307
29 28 27 26 25 24 23
POWER
SUPPLY
DEMODULATOR
SOFT
LIMITER
MUTE
SDS
IF
LEVEL
COUNTER
ADC
MPX
DECODER
Iref
CRYSTAL
OSCILLATOR
SOFTWARE
MUX PROGRAMMABLE
PORT
pilot
mono
2
I C-BUS
AND
3-WIRE BUS
1,10,20,,21,,30,31,40
6 7 8 9
ALARM_W REGISTER
COMPARATOR_W
(WEEK, MIN, HOUD)
ALARM_D REGISTER
VOLTAGE
COMPARATOR_D
(MIN, HOUR)
DETECT
TIME COUNTER
(SEC, MIN, HOUR, WEEK, DAY, MONTH, YEAR)
ADDRESS ADDRESS
DECODER DECODER
I/O
CONTROL
SHIFT
REGISTER
IC301 TB2173FTG
22
BEEP OUTA 1
OUTA 2
OUTC 3
PW GND 4
OUTB 5
BEEP OUTB 6
VCC2 7
BST TC 8
19 PILFIL AGC DET 9
AGC IN 10
18 PHASEFIL
BST OUT 11
17 XTAL2
16 XTAL1
15 SWPORT2
14 SWPORT1
13 BUSENABLE
12 BUSMODE
IC507 PST3629RL
WRITE/READ
11
CD 3
VDD 4
10 VDD
IC2 XC6219B272MR
9 OSCIN
8 OSCOUT ON/OFF
NC 4
each circuit
Control
VOUT 5
7 CE
Voltage
Reference
Current
Limit
6 /NTR
24 24
44 43 42 41 40 39 38 37 36
VOLUME/SWITCH
PORT
/PORT CONTORL
+
–
–
+
– +
+
–
ATTENUATOR
ATTENUATOR
BIAS
12 13 14 15 16 17 18 19
IC508 PST3624RL
CD 3
VDD 4
R
D
2 VOUT
1 GND
IC502 MM3077KYRE
DS
4
3 CE
Transmitter
2 VSS
R1 VD1
R2
Over Charge
1 VIN
VD2
Over Discharge VD3
Discharge Current Surge
3 2
V DD
VSS
35 34
MODE
33 C-SW
SWITCH
32 GND
VOLUME 31 IN2A
30 VOL OUTA
29 PRE INA
28 PRE INB
27 VOL OUTB
VOLUME 26 IN2B
25 IN1A
24 IN1B
23 PRE GND
BEEP
20 21 22
R
D
2 VOUT
1 GND
V–
C OUT
5
6
Counter
Logic Circuit
Level Shift
Delay Short Curcuit
Detect
Logic Circuit
1
D OUT