Sony ICD-BX112 Service Manual ▷ View online
ICD-BX112
ICD-BX112
21
21
1
MAIN
BOARD
(2/5)
BOARD
(1/5)
12
MAIN
BOARD
(1/5)
11
MAIN
9
MAIN
BOARD
(4/5)
10
MAIN
BOARD
(1/5)
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
3.3
3.1
3.3
3.1
3.3
2.9
2.8
1.1
2.8
2.9
3.1
3.1
3.3
0.5
2.9
1.1
2.9
2.9
2.9
2.8
2.9
2.9
0
2.8
2.9
0
0
2.9
2.9
2.9
C3631
1u
C3641
1u
C3681
1u
C3021
0.1u
C3620
0.1u
C3630
0.1u
C3683
0.1u
C3640
0.1u
C3053
0.1u
C3621
1u
C3680
0.1u
C3682
4.7u
C3603
10p
C3600
10u
C3601
10u
C3051
100u
6.3V
6.3V
C3015
220u
10V
D3051
DA2J10100L
ADA_PWR
NAND_PWR
BATT_XEN
VDD_NAND3.1
BATT_AD
VDD_UNREG
VDD_RTC
VDD_DDCOUT3.3
DGND
VDD_CPU3.1
VDD_MCPU1.1
VDD_ANA2.9
DGND
MM3359A11URE
IC3680
+1.1V REG.
1
CE
2
GND
Vout
3
Vdd
4
XC6213B292NR
IC3640
+2.9V REG.
1
CE
2
GND
Vout
3
Vdd
4
MM3273BURE
IC3620
+3.1V REG.
1
CE
2
GND
Vout
3
Vdd
4
MM3271BURE
IC3051
+1.1V REG.
1
CE
2
VSS
VOUT
3
VIN
4
XC6120N142NR
IC3021
BATTERY LOW VOLTAGE DETECT
1
NC
2
Vss
Vout
3
Vin
4
XC6213B312NR
IC3630
+3.1V REG.
1
CE
2
GND
Vout
3
Vdd
4
IC3600
XC9129D45CDR
DC/DC CONVERTER
1
PGND
2
Lx
3
BAT
4
EN
5
F0
6
AEN
7
AGND
8
FB
9
MODE
10
VOUT
11
@CirP
JL3006
JL3213
JL3007
JL3211
JL3004
JL3215
JL3212
JL3002
JL3217
L3601
4.7uH
Q3024
RTM001P02T2L
ENABLE SWITCH
Q3022
FG6943010R
BATTERY SWITCH
R3025
0
R3023
220k
R3027
1M
R3690
1M
R3026
10k
R3169
1M
R3051
100
R3034
100k
+-0.5%
R3032
1M
R3033
100k
+-0.5%
R3022
68k
R3028
1M
R3600
470k
+-0.5%
R3603
150k
+-0.5%
R3601
470k
+-0.5%
JL3008
DGND
(5/5)
MAIN BOARD
IC3600
IC3021
IC3630
IC3640
IC3680
IC3620
IC3051
LR03
2PCS,3V
IEC DESIGNATION
SIZE"AAA"
DRY BATTERY
S
S S 1
4
2
6
3
5
10
2
4
5
7
6
8
3
9
1
E
A
C
B
D
3-8. SCHEMATIC DIAGRAM – MAIN Section (5/5) –
• See page 24, 25 for IC Block Diagrams.
(Page 20)
(Page 17)
(Page 18)
(Page 17)
(Page 17)
ICD-BX112
ICD-BX112
22
22
• IC Block Diagrams
IC1001 MM3111AWLE (MAIN Board (4/5))
IC3061 PST8429UL (MAIN Board (1/5))
IC8021 PST8309UL (MAIN Board (1/5))
IC3062 PST8209UL (MAIN Board (1/5))
GND 1
VDD 2
OUT
RD
4
CD
3
+
–
VREF
VSS 1
VDD 2
VOUT
RD
4
CD
3
+
–
VREF
VOUT 1
VIN 2
VSS
4
NC
3
+
–
VREF
1
BIAS
3
4
2
8
6
5
7
nSHUTDOWN
BIAS
IN+
IN-
OUT-
GND
VDD
VDD
OUT+
ICD-BX112
23
IC2001 AK4645AEZ-L (MAIN Board (4/5))
PMLO
PMAINL4
PMAINR4
PMHPL
PMHPR
PMMIN
D/A
DATT
SMUTE
BASS
BOOST
AUDIO
I/F
CONTROL
REGISTER
ALC
STEREO
SEPARATION
HPF
PMDAC
PMAINR2
PMAINL2
PMADL
OR PMMICL
PMADR
OR PMMICR
PMMP
PMAINR3
MIC
POWER
SUPPLY
MIC AMP
25
LIN4/IN4+
26
ROUT/LON
27
LOUT/LOP
A/D
WIND-NOISE
REDUCTION
ALC
STEREO
SEPARATION
HPF
PMDAL OR PMADR
28
MIN/LIN3
29
RIN2/IN2-
30
LIN2/IN2+
31
LIN1/IN1-
32
RIN1/IN1+
16 TVDD
15 DVDD
14 BICK
13 LRCK
12 SDTO
11 SDTC
10 CDTI/SDA
9 CCLK/SCL
1
MPWR
2
VCOM
3
AVSS
4
AVDD
5
VCOC/RIN3
6
I2C
7
PDN
8
CSN/CAD0
24
RIN4/IN4-
23
MUTET
22
HPL
21
HPR
20
HVDD
19
HVSS
18
MCKO
17
MCKI
ICD-BX112
24
IC3051 MM3271BURE (MAIN Board (5/5))
IC3620 MM3273BURE (MAIN Board (5/5))
IC3620 MM3273BURE (MAIN Board (5/5))
IC3600 XC9129D45CDR (MAIN Board (5/5))
VSS 2
VIN
4
VOUT
3
+
–
CURRENT
LIMIT
BIAS
VREF
CE 1
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
F0
EN
BAT
ERROR AMP
PWM
COMPARATOR
LX
PGND
AEN
AGND
MODE
VOUT
FB
RAMP WAVE
GENERATOR
OSC
MODE
NC 1
VSS 2
VIN
R1
R2
4
VOUT
VREF
3
+
–
IC3021 XC6120N142NR (MAIN Board (5/5))
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