Sony ICD-AX412 / ICD-AX412F Service Manual ▷ View online
ICD-AX412/AX412F
25
IC102 PST8428UL (MAIN Board (1/7))
IC103 PST8208UL (MAIN Board (1/7))
IC901 PST8216UL (MAIN Board (7/7))
IC901 PST8216UL (MAIN Board (7/7))
IC104 PST8308UL (MAIN Board (1/7))
• IC Block Diagrams
VSS 1
VDD 2
+
–
–
VREF
VOUT
4
CD
3
2 VIN
1 VOUT
4
NC
Vref
3
VSS
GND 1
VIN 2
OUT
RD
4
CD
3
+
–
VREF
ICD-AX412/AX412F
26
IC301 TC7PA53FU (TE85L.F) (MAIN Board (3/7))
IC501 AK7903-L (MAIN Board (4/7))
IC701 TC7SH08FU (MAIN Board (5/7))
1
6
CH1
A
5 VCC
4 COM
2
GND
3
CH0
CURRENT LIMIT
8
4 EN1
3 PIN1
2 PIN2
1 NIN
7
SW
VIN
9
RT
10
COMP
11
FB
12
SENSE
13
CONT
14
EN2
15
VDD
16
OPOUT
6
GND
5
ISET
STD
Bulk
CURRENT
MONITOR
PWM
CONTROL
1
INB
2
INA
4 OUTY
5 VCC
3
GND
ICD-AX412/AX412F
27
IC601 SI4708-B-GMR (MAIN Board (4/7))
IC902 XC9129S001DR (MAIN Board (7/7))
2
3
13
12
11
8
9
7
6
1
10
LNA
AGC
DAC
15
14
GPIO
DAC
CONTROL
INTERFACE
I
ADC
PGA
DSP
LOW-IF
Q
ADC
LOUT
VD
VIO
RCLK
SDIO
SCLK
16
NC
GPO
VA
NC
ROUT
GND
FMI
RFGND
TUNE
RST
REG
AFC
0/90
4
SEN
RST
5
5
4
3
2
1
6
7
8
9
9
10
PHASE
COMPENSATION
CURRENT SENSE,
LIMIT,PFM
PWM/PFM
CONTROLLER,LOGIC
BUFFER
DRIVER
EN.
THERMAL SHUTDOWN
VREF WITH
SOFT START
NC
EN
BAT
ERROR AMP
PWM
COMPARATOR
LX
PGND
NC
AGND
MODE
VOUT
FB
RAMP WAVE
GENERATOR
OSC
MODE
ICD-AX412/AX412F
28
IC903 MM3271AURE (MAIN Board (7/7))
IC904 MM3404A10URE (MAIN Board (7/7))
IC905 MM3404A29URE (MAIN Board (7/7))
IC910 MM3404A18URE (MAIN Board (7/7))
IC905 MM3404A29URE (MAIN Board (7/7))
IC910 MM3404A18URE (MAIN Board (7/7))
IC911 PST8431UL (MAIN Board (7/7))
GND 2
VDD
4
VOUT
3
+
–
CURRENT
LIMIT
BIAS
VREF
CE 1
VOUT
3
CE 1
GND 2
VDD
4
+
–
VOLTAGE
REFERENCE
CURRENT
LIMIT
BIAS
GND 1
VDD 2
+
–
–
VREF
OUT
4
CD
3
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