Read Sony NW-E403 / NW-E405 / NW-E407 Service Manual online
22
22
NW-E403/E405/E407
NW-E403/E405/E407
•
IC Block Diagrams
IC301 TB2173FTG
– MAIN Board –
IC401 RV5C348A-E2
IC503 MM3032JULE
IC505, IC506 TPS62200DBVR
IC507 PST3629UL
IC508 PST3624UL
34
MUTE SW
C-SW
OUTA
MODE
SWITCH
VOLUME
VOLUME/SWITCH
/PORT CONTORL
2
35
PW SW
36
RESET
37
CK
38
DATA
39
STB
43
P1
44
P2
40
VDD
41
PRE NFA
33
IN2A
31
PRE INA
29
PRE INB
28
VOL OUTA
30
VOLUME
IN2B
26
IN1A
25
VOL OUTB
27
GND
32
PRE GND
MODE TC
23
+
–
+
–
42
PRE NFB
BEEP OUTA 1
BEEP OUTB 6
VCC2 7
BST TC 8
AGC DET 9
AGC IN 10
OUTC 3
PW GND 4
OUTB 5
ATTENUATOR
IN1B
24
ATTENUATOR
22
MUTE TC
21
BEEP
20
VCC1
19
BIAS IN
18
BEEP
OUT ADJ
17
RF
16
LPF1
14
LPF2
12
BST NF
13
BIAS OUT
15
BIAS
+
–
+
–
+
–
BST AGC
BST OUT 11
PORT
32kHz
OUTPUT
CONTROL
OSC
DETECT
DIVIDER
CORRECTION
TIME COUNTER
(SEC, MIN, HOUR, WEEK, DAY, MONTH, YEAR)
COMPARATOR_D
INTERRUPT
CONTROL
SHIFT
REGISTER
COMPARATOR_W
ALARM_W REGISTER
(WEEK, MIN, HOUD)
ALARM_D REGISTER
(MIN, HOUR)
OSC
DIV
ADDRESS
DECODER
DECODER
ADDRESS
DECODER
DECODER
VOLTAGE
DETECT
I/O
CONTROL
1
32K OUT
2
SCLK
3
SO
4
SI
5
VSS
6 /NTR
7 CE
8 OSCOUT
9 OSCIN
10 VDD
1
GND
2
VDD
4
CE
10k
3
VOUT
Vref
+
–
Current Limit
1
V1
2
GND
3
EN
5
SW
4
FB
R1
REF
Skip Comparator
Conpensation
Gm
VREF=0.5V
Comparator High
Comparator
S
R
Comparator Low
Comparator Low2
+
+
–
–
Undervoltage
Lockout
Blas Supply
V
I
Sawtooth
Generator
+
–
V(Comp)
Control Logic
Comparator High
Comparator Low
Comparator Low2
1MHz
Oscillator
Soft Start
+
–
REF
Current Limit Comparator
+
–
Driver
Shoot-Through
Logic
+
–
OUT
4
CD
3
+
–
VREF
VDD 2
GND 1
OUT
4
CD
3
+
–
VREF
VDD
R
D
2
GND 1
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