Block Diagram - Sony ICD-B25 Service Manual

ICD-B25

3-2. BLOCK DIAGRAM

MIC101 IC101
MAIN BOARD
MIC AMP
MIC
J101 3
VIN+
MIC
4 VIN-
Q101
MIC
SENS
• Signal Path
: PB
: REC
F-SW BOARD (2/2)
S701 - 705
S706, 707
IC102
ALC AMP
IN OUT
VOUT 1 3 5
IC103
VOR CONTROL
1 INPUT OUT1 6
IC106
IC706
FLASH MEMORY
R/B 7
29
ı
IO1 RE 8
32
• ı
CE 9
41
IO8
ı CLE 16
44
ALE 17
Q702
WE 18
12
ZVCC +B
•
VCC
WP 19
37
SW
S702
PLAY SPEED
SLOW NORMAL
Q705, 706
WAKE-UP
SW
P-SW BOARD
S722
S721, 723 - 725 S726
IC107
IC112
A/D, D/A CONVERTER
AMP
VIN VOUT
4 22 4 VIN- VOUT
PDWN 20
XTI 17
8
BCK
FS 9
Q106
LPF
DIN 10
SW
DOUT 11
IC109
DSP
SI2 38
13
35
SO2
SIEN2 37
SOEN2 34
IC105 SOT2
SCK2 36
59
CLKIN
29 SCK1
/RESET 72
27
SI1
31 SO1
28 SIEN1
33
SOEN1 15
42 P3
43 P2
IC104, 108
IC712
CLOCK GEN
SYSTEM CONTROL
DSPSYSCK 9 6 CLKIN
96 DSPIFREQ
AVCC
3
Q0
13 DCOMDT
1 CE
12 XDIFEN
DSPPWR 6
14 SIN1
1 CE
15
SOT1
Q0 3
16 7 6
SCK1 ADASYSCK CLKIN
57 XVORIN
XDSPRST 58
REAL-TIME CLOCK
DSPACK 11
103 FLMIO00
SOT2 36 4
ı ı
110 FLMIO07
SIN2 35 3
SCK2 37 2
Q707
SW
SIPCS 41
5 FLMRB
XFLMRE
3 RTCCE 1 7
101 XFLMCE0
98 6
RTCINTR
56 FLMCLE
SUBCLK 74 1
55 FLMALE
46
4 XFLMWE BATT
120 XFLMWP BEEP 2
HPJACK 51
52
FLMSEL
XHSTBY
86
90 1
XRESET
XTALIN 92
X701
4.096MHz
49 SPEED
XTAL 93
FAST
95
WAKEUP
COM0 59
53 KEYPUP
ı ı
COM3 62
LCD101
17
LIQUID
ı
CRYSTAL
32
DISPLAY
•
SEG00
64
PANEL
ı ı
72
47 KEYIN0 SEG31
•
75
KEYIN1 ı
48
81
100 HOLDSW
8 8
IC110
POWER AMP
1 17
RV101 IN1
13
VOL
+
-
6
Q107, 108
Q102 INV
IN2
LPF
OUT
MUTE
3
SW
IC715
SI/PO DRIVER
MICSENSE LMUTE 7
XSPPWR 11
D703
XHPPWR 12
OPR
HPMUTE
8
2 DATA
XREDLED 5 RED (REC)
3
CLOCK
XGRNLED 6 GRN (PB)
APOWER 10
ADAPWR 9
XLIGHT 4
XFLMPWR
XBATTEN 14
Q710
SW
F-SW BOARD (1/2)
AVCC
3V
IC504
DSPVCC
DC-DC
IC716
2.3V
CONVERTER
SI
SO IC505
X702
+2.9V REG
32.768kHz
SCLK
OSCIN 9
MICVCC
2.9V 5 VOUT VIN 2
OSCOUT 8 CE
CE 3
INTR
IC506
32KOUT
+2.9V REG
ADAVCC
2.9V 5 VOUT VIN 2
CE
IC710
3
RESET
IC502
+3.1V REG
ZVCC
3.1V
5 VOUT VIN 2
CE
SVCC
3
D701, 702
(BACK LIGHT) Q504
DECODER
Q105
AVCC
BUFFER
15
SP101
RF
SPEAKER
11
8
STNBY
1
Q103
SW
J102
EAR
IC508, Q503
DC-DC
CONVERTER
(3.2V)
DRY BATTERY
SIZE"AAA"
(IEC DESIGNATION LR03)
IC507
2PCS,3V
VOLTAGE
DETECTOR