Sony ICD-ST25 Service Manual ▷ View online
25
ICD-ST25
• IC BLOCK DIAGRAMS
IC3001 LA7473V-TLM-E (MAIN BOARD)
IC3002 NJM2781RB1 (MAIN BOARD)
EXTNF2R
EXTNF1R
EXT IN-R
CTL-2
MIC VCC
HPFSW
INT IN-R
INTNFR
MIXOUTR
MIXINL
INTOUTR
GND
CTL-1
EXT IN-L
RF
INT IN-L
EXTNF1L
EXTNF2L
VCC
INTNFL
INTOUTL
MIXINR
MIXOUTL
HPF IN-L
OUT
-L
BIAS
SIT/MONO
HPF IN-R
OUT
-R
INT/EXT
1
2
3
4
5
6 7 8
9 10
11 12
13 14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
EXT MIC
DET
EXT MIC
AMP L
EXT MIC
AMP R
INT MIC
AMP L
MIX
AMP L
OUTPUT
AMP L
RIPPLE
FILTER
MIC
VCC
VCC
INT MIC
AMP R
MIX
AMP R
OUTPUT
AMP R
BIAS
ON
OFF
ON
OFF
EXT
INT
EXT
INT
1
2
3
4
8
7
6
5
REG
GND
V+
OUT
IN-
NOISE
REG
STBY
IN+
26
ICD-ST25
IC3003 MM3111XWLE (MAIN BOARD)
IC3004 AK4566VN-L (MAIN BOARD)
7
8
14
13
12
11
10
9
28
22
23
24
25
26
27
5
6
4
3
2
1
15
17
16
18
19
20
21
AUDIO I/F
CONTROLLER
CONTROL
REGISTER
PDN
CSN
CCLK
HP AMP
MOUT
CDTI
LRCK
MCLK
BICK
SDTI
SDTO
DVDD
DVSS
HVSS
HVDD
HPR
AINL1
AINR1
AINL2
AINR2
A
VDD
A
VSS
VCOM
VREF
LIN
RIN
MIN
MOUT
MUTET
HPL
IPGA & ADC
DAC
ADC
DAC
HPF
DATT
VCOM
VREF
BOOST
IPGA
AINL1
AINL2
AINR1
AINR2
1
2
3
4
8
7
6
5
BIAS
OUT-
GND
VDD
OUT+
SHUT
BIAS
IN+
20k
20k
IN-
27
ICD-ST25
IC5003 XC9502B092AR (MAIN BOARD)
1
2
3
4
RAMP WAVE
GENERATOR1
RAMP WAVE
GENERATOR2
EXT1
VDD
FB1
PWM1
5
10
9
8
7
6
EN1
EXT2
GND
FB2
PWM2
EN2
EN1 TO
INTERNAL CIRCUIT
VREF1=0.9V
WITH SOFT START1,
EN1
VREF1=0.9V
WITH SOFT START2,
EN2
PWM/PFM
CONTROLLER1
PWM/PFM
CONTROLLER2
OSC
GENERATOR
EN2 TO
INTERNAL CIRCUIT
PWM
COMPARATOR1
PWM
COMPARATOR2
ERROR AMP1
ERROR AMP2
IC6003 NJU6366AF1(TE1) (MAIN BOARD)
1/2
1/2
1/2
3-STATE
BUFFER
1
3
2
6
4
5
FOUT
VDD
XXT
VSS
XT
XCONT
RF
CG
CD
A
B
C
D
1 2
3
5 6 7 8
10
16 15 14 13 12 11
CONTROL
CIRCUIT
12 BIT
SHIFT
REGISTER
12 BIT
STORAGE
REGISTER
VDD
HPMUTE
XLIGHT2
MONOMIC
XBATTEN
XDSPRST
XFLMPWR
9
XADAPDN
SPAMP
XSTMIC
XREDLED
XGRLED
4
XLIGHT1
CLK
DATA
VSS
OUTPUT
BUFFER
(OPEN DRAIN)
IC7001 BU2090FS-E2 (MAIN BOARD)
28
ICD-ST25
IC7004 RX-4591CF (MAIN BOARD)
1
2
3
4
VDD
FOE
XIRQ
T1
5
10
9
8
7
6
FOUT
CE
CLK
DO
DI
CE
CLK
DO
DI
CE
CLK
DO
DI
GND
FOUT
CONTROLLER
DIVIDER
OSC
32.768kHz
INTERRUPTS
CONTROLLER
BUS
INTERFACE
CIRCUIT
CONTROL
REGISTER
AND
SYSTEM
CONTROLLER
TIMER
REGISTER
CLOCK
AND
CALENDAR
ARARM
REGISTER
IC8001 M66291GP-2 (MAIN BOARD)
CVDD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
4
3
5
6
14
13
8-10
11
GND
D-
D+
VBUS
TRON
TEST
DACK1
DREQ1
TC1
INT1
IVDD
XOUT
XIN
CVDD
GND
A1
A2
A3
A4
A5
A6
D0
D1
D2
D3
D4
D5
D6
D7
D11
D10
D9
D8
IVDD
GND
D12
D13
D14
D15/A0
HWR/BYTE
INT0
RD
LWR
CS
RST
DREQ0
DACK0
I/O BLOCK
USB-IP
OSCILLATION
BUFFER
/48MHzPLL
VBUS
INPUT CIRCUIT
D+ PIN PULLUP
CIRCUIT
USB
TRANSCEIVER
TRANSFER
CONTROLLER
SERIAL
INTERFACE
ENGINE
(SIE)
INTERRUPT CONTROLLER
ENDPOINT
CONTROLLER
FIFO MEMORY CONTROLLER
FIFO MEMORY
BUS
INTERFACE
UNIT
(BIU)
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