Read Sony NW-S21 / NW-S23 Service Manual online
NW-S21/S23
9
9
NW-S21/S23
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM
S702
S703
CN400 (1/2)
3
2
3 IN1
128 UDM
129 UDP
186 XCS0
BEF
D0 – D15
STB
DQ0 – DQ15
38 – 53
29 – 36,
38 – 45
A0 – A18
1 – 8,
16 – 24
A1 – A19
197 – 207,
2 – 9
27
187 XCS1
BES 13
182 XRE
OE 28
185 XWE
WE 11
184 XUB
UBS 14
183 XLB
LBS 15
NOR FLASH MEMORY,
S-RAM
IC450
29 XFCE0
CE
FAD0 – FAD7
I/O1 – I/O8
15 – 22
29 – 32,
41 – 44
9
24 FALE
ALE 17
23 FCLE
CLE 16
27 XFRE
RE 8
26 XFWE
WE 18
28 XFWP
WP 19
30 FRB0
102 AN4
R/B 7
NAND FLASH MEMORY
IC460
75 SI1
SO 3
74 SO1
SI 4
73 XSCK1
SCLK 2
76 XSCS1
9 OSCIN
8 OSCOUT
CE 7
REAL TIME CLOCK
IC700
–
VOLUME
104 INT8
+
S709
+ >
S701
.
–
+2.3V
103 AN5
S704
SOUND
REPEAT
S708
GROUP
81 INT3
105 INT9
S705
MENU
+2.3V
S707
Nx
S706
HOLD
83 INT4
87 INT5
HOLD
OFF
X700
32.768kHz
137
XTAL
138
EXTAL
X400
22.5792MHz
141
TX
142
TEX
X401
16MHz
AOUTL 134
8 IN2
AOUTR 133
OUT2 9
OUT1 2
PF3 84
BEEP 85
7
PI3 174
XRST 106
PC2 59
SO0 58
SDA
XSCK0 57
SCL
XSCS0 60
XCS1
PR0 156
A0
PI5 176
PI2 173
PR4 160
XRES
LIQUID
CRYSTAL
DISPLAY
UNIT
EL
BACK LIGHT
UNIT
HEADPHONE AMP
IC301
11 ENA1
VDD
LDR
PI1 172
10 ENA2
OUTCM 16
OUT2 15
OUT1 18
13
EL DRIVER
IC801
1
CHV
20
D801
+2.8V
D702
ACCESS
LED DRIVE
Q702
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION LR03)
1PC. 1.5V
BATTERY
DETECT
IC500
DC/DC
CONVERTER
IC503, Q500
+1.2V
REGULATOR
IC504
+2.8V
REGULATOR
IC508
+2.3V
REGULATOR
IC509
+3.3V
REGULATOR
IC506
+2.8V
REGULATOR
IC461
VOLTAGE
DETECT
IC502
VOLTAGE
DETECT
IC505
SWITCHING
Q503
SWITCHING
IC501
SWITCHING
Q506, 507
SWITCHING
Q501
DC/DC
CONVERTER
IC507, Q505
D501
D504
D502
D503
+1.2V
+2.8V
+2.3V
+3.3V
+2.8V
NAND FLASH MEMORY
B+
RESET SWITCH
Q502, 504
VOLTAGE
DETECT
IC510
CN400 (2/2)
1
VBUS
DATA+
DATA–
: USB output to PC
: PLAYBACK
: USB input from PC
SIGNAL PATH
J301
i
D703
C700
PAS SECONDARY
BATTERY
(BACK-UP)
SYSTEM CONTROLLER,
D/A CONVERTER
IC400
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