Main Section -1 - Sony ICD-ST25 Service Manual

4-1. BLOCK DIAGRAMS – MAIN SECTION -1 –
MIC1
(ZOOM)
MIC2
(L-CH)
MIC3
(R-CH)
J3001
m
PLUG IN POWER
Q3002
J3002
SP3001
(SPEAKER)
46
IC3002
MIC AMP
4 IN+ OUT 6
2 REG STBY 3
Q3004
26 MICVCC
6 INTINL
24 INTINR
29 EXTINR
2 EXTINL
1 CTL1
IC3003
POWER AMP
5 VO1 -IN 4
8 1
VO2 XSHUT-
DOWN
SI/PO DRIVER
13
MONOMIC
8 SPAMP
RED(REC) 6
XREDLED
D902
(OPR)
(REC/PB)
GREEN(PB) XGRLED
5
XBATTEN
B
12 XBATTEN
3 CLK
2 DATA
116 115
IC3001
MIC AMP
ADC, DAC, HEADPHONE AMP
25 AINR2
26 AINL2
OUTL 13 28 AINL1
OUTR 17 27 AINR1
Q3001
INT/EXT
16
Q5008
VCC 7 AVDD
B+ SWITCH
HPR
14
15 HPL
17 MOUT
1 PDN
Q3003
MUTE
X6001
11.2896MHz
IC7001
HPMUTE 15
XSTMIC 7
9
XADAPDN
11
XDSPRST
XLIGHT1 4 D7002
(LCD PANEL LIGHT)
XLIGHT2
14 D7003
45 12
IC7003 (1/3)
CPU
13 13
IC3004
STDO
STDO 9
BCLK
BICK
7
LRCK
LRCK 5
A
SO
SDTI 8
XRST
MCLK
MCLK 6
CDTI 4
CCLK 3
MIN 18
CSN 2
IC6003
CLOCK GEN
5
XT
FOUT 1
3
XXT
4 XCONT
REAL TIME CLOCK
9 CLK
7 DI
8 DO
CE
10
102 18 100 99 98 101
ICD-ST25
Signal path
: PB
: REC
IC7004
XIRQ
3
FOUT
5
13 111