Sony ICD-PX312 / ICD-PX312D / ICD-PX312F / ICD-PX312 M / ICD-PX312M (serv.man2) Service Manual ▷ View online
ICD-PX312/PX312D/PX312F/PX312M
ICD-PX312/PX312D/PX312F/PX312M
21
21
2
4
5
7
6
8
3
9
1
E
A
C
B
D
BOARD
(6/6)
3
MAIN
BOARD
(1/6)
2
MAIN
IC B/D
0
3
3
0
0
0
0
(4/6)
MAIN BOARD
C701
0.1u
C702
0.1u
C704
1u
R707
220
R712
47k
R704
220
R710
47k
R705
220
R708
220
R703
220
R711
47k
R706
220
R713
47k
R701
47k
R709
47k
SD1_DATA3
SD1_CMD
SD1_DATA1
SD1_CKO
SD1_DATA2
SD1_DATA0
VDD_REGMSSD
CARD_XDET
R716
1M
VDD_REGIO31
CARD_SDXMS
R715
470k
DGND
IC701
TC7SH08FU
MS DETECT
1
INB
2
INA
3
GND
4
OUTY
5
VCC
C705
0.1u
RW1A025ZPT2R
1
3
4
2
5
6
R702
470
CN701
8P
1
MS_BS
2
MS_VCC/DATA1
3
MS_SDIO/DATA0
4
MS_DATA2
5
MS_INS
6
MS_DATA3
7
MS_SCLK
8
MS_VCC
9
MS_VSS
10
Reserved
11
Reserved
12
SD_DATA2
13
SD_DATA3
14
SD_CMD
15
SD_VDD
16
SD_CLK
17
SD_VSS
18
SD_DATA0
19
SD_DATA1
IC701
M2/microSD
CN701
MS POWER SWITCH
Q701
(20)
(21)
3-8. SCHEMATIC DIAGRAM – MAIN Section (4/6) –
• See page 24 for IC Block Diagrams.
(Page 18)
(Page 23)
ICD-PX312/PX312D/PX312F/PX312M
ICD-PX312/PX312D/PX312F/PX312M
22
22
10
2
4
5
7
6
8
3
9
1
E
A
C
B
F
D
9
MAIN
BOARD
(1/6)
10
MAIN
BOARD
(1/6)
MAIN
BOARD
(1/6)
11
BOARD
13
(1/6)
MAIN
(1/6)
12
MAIN
BOARD
0
3.1
3.1
C405
0.001u
C403
0.1u
C404
0.1u
C402
0.1u
C401
0.1u
KEY0_AD
KEY1_AD
KEY_WAKE
CL401
Q401
DRA3114Y0L
KEY WAKE UP SWITCH
CL402
C453
1u
C454
1u
R408
1k
R401
10k
R406
1k
R402
10k
R418
10k
R417
22k
S402
S404
S406
S410
S408
S413
S414
R405
1k
R407
1k
R409
2200
R411
2200
R413
4700
R415
10k
S405
S403
S409
S411
S407
S412
R416
10k
R410
2200
R414
4700
R412
2200
R404
1k
R403
470k
S401
KEY_XNR
VDD_REGIO31
LCD_A0
CPU_XRST
SPI0_SCLK
LCD_XCS
DGND
SPI0_MOSI
CN451
10P
1
VG
2
XVO
3
V0
4
VSS
5
AVDD
6
SDA
7
SCLK
8
A0
9
RSTB
10
CSB
C452
0.1u
R451
220
R452
220
R453
220
VDR402
VDR401
-
+
ERASE
T-MARK
DISP/ MENU
SCENS
ON
OFF
( 5 / 6 )
M A I N B O A R D
ENTER
PLAY/STOP
REC/PAUSE
A-B
1
2
2
3
NOISE CUT
VOL
-
+
LIQUID
LCD101
DISPLAY
PANEL
CRYSTAL
3-9. SCHEMATIC DIAGRAM – MAIN Section (5/6) –
(Page 18)
(Page 18)
(Page 18)
(Page 18)
(Page 18)
ICD-PX312/PX312D/PX312F/PX312M
ICD-PX312/PX312D/PX312F/PX312M
23
23
3-10. SCHEMATIC DIAGRAM – MAIN Section (6/6) –
10
2
4
5
12
11
7
6
8
3
9
1
13
E
I
A
C
H
B
F
D
G
14
6
MAIN
BOARD
(3/6)
BOARD
(1/6)
14
MAIN
16
MAIN
BOARD
(1/6)
15
MAIN
(1/6)
BOARD
18
MAIN
(1/6)
BOARD
7
MAIN
BOARD
(3/6)
MAIN
BOARD
(4/6)
3
BOARD
(1/6)
17
MAIN
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
IC B/D
0
3.3
1.4
3.1
3
3
3
0
3.1
3.1
3.3
0
0.5
3
3
2.8
0
2.8
2.8
3
2.8
2.8
0
0
2.8
3
0
0
0
0
0
0
0
3
3
0
2.8
0
3.3
2.8
3.3
3.3
3.3
2.8
2.8
1
3.1
3.3
2.8
2.8
1
2.8
3.3
2.9
3.1
3.3
1.8
3.1
0
0
0
1.4
TOTAL CURRENT
PLAY:10.5mA
REC:11mA
STOP:5.8mA
FF:13mA
FR:13mA
MAIN BOARD (6/6)
IC911
IC903
IC904
IC909
IC905
IC906
IC908
IC910
IC902
IC901
IC961
IC962
KEY_XHOLD
KEY_POFF_XDET
PWR_ON
RTC_XINT
VBUS_XDET
AU_PWR_CTL
SD_PWR_CTL
KEY_XHOLD
BATT_AD
RTC_XINT
KEY_POFF_XDET
HP_MUTE
HP_MUTE
SD_PWR_CTL
BATT_AD
VB2
VBUS_XDET
PWR_ON
LDO_EN
VDD_BATT
AU_PWR_CTL
C905
0.1u
Q941
LSK3541FS8T2L
HOLD DETECT
Q942
DRC3144E0L
POWER SWITCH DETECT
Q943
DRA3114Y0L
INVERTER
D902
RR264M-400
Q945
RZM002P02T2L
REGULATOR ENABLE SWITCH
C904
0.1u
VDD_VBUS
VDD_REGIO31
VDD_REGANA29
VDD_REGMSSD
VDD_REGCORE
VDD_REGADA31
VDD_SP
PWR_ON
RTC_XINT
AU_PWR_CTL
SD_PWR_CTL
BATT_AD
KEY_XHOLD
KEY_POFF_XDET
VBUS_XDET
MM3404A10URE
IC905
REGCORE +1V REG
1 CE
2 GND
2 GND
VOUT
3
VDD
4
Q944
RUM002N02T2L
SWITCH
Q961
LSK3541FS8T2L
INVERTER
C941
0.1u
MM3404A29URE
IC906
REGANA +2.9V REG
1 CE
2 GND
2 GND
VOUT
3
VDD
4
IC961
TK77335AM4
OVER VOLTAGE PROTECT SWITCH
1
NC
2
Vin
3
GND
4
Vcont
5
Np
6
NC
7
Vout
8
NC
C965
0.1u
C963
0.47u
C962
0.1u
C917
1u
C916
1u
MM3273BURE
IC903
+3.1V REG
1
CE
2
GND
VOUT
3
VDD
4
C922
1u
C929
100u
6.3V
D965
RR264M-400
C914
1u
IC909
REGIO +3.1V REG
RP114N311D-TR-FE
1 VCC
2 GND
3 CE
2 GND
3 CE
4
NC
5
VOUT
C913
1u
C920
10u
C928
1u
C925
1u
C924
1u
S941
(HOLD/POWER)
1
2
4
5
3
6
7
C915
1u
MM3271AURE
IC904
REGRTC +1V REG
1
CE
2
GND
VOUT
3
VDD
4
VDD_REGRTC
CL905
CL961
CL904
CL903
CL909
CL907
CL906
CL965
CL901
R942
1M
R948
1M
R941
1k
R944
470k
R912
0
R943
1M
R906
10k
R965
470k
R915
330k
0.5%
R922
100
R962
0
R947
1M
R921
470k
R916
68k
0.5%
R964
470k
R918
470k
R945
10k
C906
220u
10V
C912
10p
L901
4.7uH
Q905
RW1A025ZPT2R
BATTERY VOLTAGE SWITCH
R913
470k
D962
DB2J31700L
R905
100k
0.5%
R904
100k
0.5%
PST8216UL
IC901
LOW BATTERY VOLTAGE DETECT
1
VOUT
2
VIN
NC
3
VSS
4
R908
47k
R914
100k
0.5%
DGND
JL901
JL902
HP_MUTE
Q903
LSK3541FS8T2L
SWITCH
C961
0.1u
R946
1M
Q904
RZM002P02T2L
SWITCH
C907
0.1u
R911
470k
R907
15k
D964
RR264M-400
C901
0.1u
IC902
XC9129D45CDR
DC/DC CONVERTER
1
PGND
2
Lx
3
BAT
4
EN
5
NC
6
NC
7
AGND
8
FB
9
MODE
10
VOUT
11
GND
C903
0.1u
MM3404A18URE
IC908
REGADA +1.8V REG
1 CE
2 GND
2 GND
VOUT
3
VDD
4
VDD_REGADA18
C919
1u
C927
1u
CL908
R910
1M
D901
DB2J31700L
D966
RB160M-30TR
D903
DA2J10100L
D941
DA2J10100L
D942
DA2J10100L
D943
DA2J10100L
D944
DA2J10100L
D963
DA2J10100L
IC910
REGMSSD +3.1V REG
1
VOUT
2
VSS
3
SSC
4
CE
VSS
5
VIN
6
C930
0.01u
R949
1k
R902
100
C931
47u
6.3V
R923
0
IC911
POWER CONTROL
PST8117UL
1
VOUT
2
VDD
NC
3
GND
4
C932
0.1u
Q902
LSK3541FS8T2L
BATTERY DETECT
IC962
VBUS DETECT
PST8134UL
1
VOUT
2
VDD
NC
3
GND
4
CL966
CL964
CL962
C921
47u
6.3V
CL910
R967
0
R968
47k
R969
47k
C909
22u
16V
C910
10u
16V
C911
10u
16V
C908
10u
16V
R972
0
R973
10k
DGND
VDD_REGIO31
S-1137A31-I6T2G
SIZE
AAA
IEC DESIGNATION
DRY BATTERY
LR03
2PCS,3V
( )
HOLD OFF
HOLD ON
POWER ON/OFF
3
4
1
2
5
6
S
S
S
S
S
S
S
(Page 18)
(Page 18)
(Page 20)
(Page 20)
(Page 21)
(Page 18)
(Page 18)
(Page 18)
• Refer to page 24 for IC Block Diagrams.
Note: When IC902 and IC908 on the Main board are damaged, exchange
the new Main board for the Main board which IC damaged.
ICD-PX312/PX312D/PX312F/PX312M
ICD-PX312/PX312D/PX312F/PX312M
24
24
IC101 PST8428UL (MAIN Board (1/6))
IC102 PST8208UL (MAIN Board (1/6))
IC901 PST8216UL (MAIN Board (6/6))
IC901 PST8216UL (MAIN Board (6/6))
IC103 PST8308UL (MAIN Board (1/6))
• 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
IC701 TC7SH08FU (MAIN Board (4/6))
1
INB
2
INA
4 OUTY
5 VCC
3
GND
IC601 SI4708-B-GMR (MAIN Board (3/6))
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
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