Sony NWZ-A726 / NWZ-A726B / NWZ-A728 / NWZ-A728B / NWZ-A729 Service Manual ▷ View online
NWZ-A726/A726B/A728/A728B/A729
NWZ-A726/A726B/A728/A728B/A729
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25
5-8. SCHEMATIC DIAGRAM - MAIN Board (4/6) -
• See page 31 for IC Block Diagrams.
IC B/D
IC B/D
IC B/D
(6/6)
BOARD
1
MAIN
(6/6)
MAIN
BOARD
9
(1/6)
MAIN
BOARD
8
IC B/D
IC501
S1R72V27B05E10B
B8
XI
C8
XO
H1
TESTEN
H8
ATPGEN
A8
BURNIN
A6
R1
A3
DP
A4
DM
B1
VBUSFLG
C1
VBUSEN
C3
VBUS
D1
XRESET
D8
CLKIN
G3
XRD
H3
XWRL
F3
XWRH
H2
XCS
E3
XINT
G4
XDREQ
F4
XDACK
D2
XBEL
C4
CA1
E1
CA2
C5
CA3
E2
CA4
D3
CA5
G1
CA6
F1
CA7
F2
CA8
H4
CD0
G5 CD1
H5 CD2
F5 CD3
E6 CD4
H6 CD5
G6 CD6
F6 CD7
H7 CD8
G8 CD9
F7 CD10
E7 CD11
F8 CD12
D6 CD13
E8 CD14
C6 CD15
A5
HVDD
B3
HVDD
C2
HVDD
A2
LV
D
D
A7
LV
D
D
C7
LV
D
D
G2
LV
D
D
D7
CVDD
B2
VSS
B4
VSS
B5
VSS
B6
VSS
B7
VSS
G7
VSS
A1
NSS(NC)
X501
12MHz
C502
15p
DGND
R502
0
C501
18p
R507
1k
C503
1
R503
100k
R504
100k
R505
100k
R506
6200
AB0_XRD
AB0_XWR
AB0_XCS2
AB0_D1
AB0_D0
AB0_D3
AB0_D2
AB0_D7
AB0_D6
AB0_D5
AB0_D4
AB0_D10
AB0_D8
AB0_D9
AB0_D11
AB0_D15
AB0_D12
AB0_D14
AB0_D13
AB0_A1
AB0_A2
AB0_A3
AB0_A4
AB0_A7
AB0_A6
AB0_A5
AB0_A8
USB_INT
IC503
TK63731AB1G0B
A1
GND
B1
VOUT
B2
VIN
A2 VCONT
PSM_L0DET
VDD_UNREG_J
C504
0.1
C511
1
R511
220k
RESETZ
C510
0.1u
USB_DP
USB_DM
VCC_VBUS
C512
1
C506
0.1
USB_XRST
R519 220k
IC502
TC7SG08AFS
1
2
GND
3
4
5
VCC
IC504
TK63718HCL-G
1
VIN
2
GND
3
VOUT
4
NC
5
GND
6
VCONT
R521
0
R522
0
0.1
C505
0.1
C507
0.1
C508
0.1
C509
FL501
CL501
CL502
VDD_GP1_FB_J
SN74AVC1T45YZPR
IC509
A1 VCCA
B1 GND
C1 A
C2
B
B2
DIR
A2
VCCB
0.1
C517
0.1
C518
R527
0
AB0_XDMARQ
AB0_XDACK
R510 22
R528
0
VDD_GP1_J
TC7SG04AFS
IC508
1
2 GND
3 NC
4
5
VCC
0.1
C516
100k
R520
AB0_XRD
AB0_A2
AB0_A3
AB0_A4
AB0_A5
AB0_A6
AB0_A7
AB0_A8
AB0_D0
AB0_D1
AB0_D2
AB0_D3
AB0_D4
AB0_D5
AB0_D6
AB0_D7
AB0_D8
AB0_D9
AB0_D10
AB0_D11
AB0_D12
AB0_D13
AB0_D14
AB0_D15
AB0_A1
AB0_XRD
AB0_D0
AB0_A8
AB0_A7
AB0_A6
AB0_A5
AB0_A4
AB0_A3
AB0_A2
AB0_A1
AB0_D1
AB0_D2
AB0_D3
AB0_D4
AB0_D5
AB0_D6
AB0_D7
AB0_D8
AB0_D9
AB0_D10
AB0_D11
AB0_D12
AB0_D13
AB0_D14
AB0_D15
AB0_XCS2
AB0_XDMARQ
AB0_XDACK
AB0_XDMARQ
AB0_XDACK
AB0_XCS2
INVERTER
IC508
LEVEL SHIFT
IC509
USB CONTROLLER
IC501
IC502
RESET SWITCH
IC504
+1.8V REGULATOR
(Chip Size Package)
CSP
+3.1V REGULATOR
IC503
CSP
(Chip Size Package)
CSP
(Chip Size Package)
MAIN BOARD (4/6)
7
11
D
B
6
9
10
F
5
3
G
1
12
C
E
H
8
4
13
A
2
Note 2: IC501, IC503, IC508 and IC509 on the MAIN board cannot exchange with single. When IC501, IC503,
IC508 and IC509 on the MAIN board are damaged, exchange the entire mounted board.
(Page 27)
(Page 22)
(Page 27)
Note 1: When the MAIN board is replaced, format it according to the “NOTE OF MAIN
BOARD REPLACING” (refer to page 4) of the servicing notes.
NWZ-A726/A726B/A728/A728B/A729
NWZ-A726/A726B/A728/A728B/A729
26
26
5-9. SCHEMATIC DIAGRAM - MAIN Board (5/6) -
• See page 31 for IC Block Diagrams. • See page 33 for IC Pin Function Description.
IC B/D
IC B/D
BOARD
2
MAIN
(6/6)
(6/6)
BOARD
MAIN
5
(1/6)
BOARD
MAIN
10
IC302
CS43L21-CNZR
1
2
3
4
5
6
7
8
9
101
1
121
31
41
51
6
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
VDD_HP_F
C308
1
C311
1
C314 1
ADA_XRST
PCM0_DADT
CPU_REFCLKO
C107
0.068
SPI0_MOSI
SPI0_CLK
SPI0_XCS2
DGND
AGND
C303 0.1
VDD_DDC2_J
C310 0.1
C315 1
C313 0.1
C306
0.1
C110
0.22
R1
10
2.2
R210
2.2
C210
0.22
C207
0.068
R108
470
R209
470
R208
470
R109
470
C302 0.1
LINE_OUT_R
LINE_OUT_L
HP_XMUTE
C312 22
XCRD_LINEOUT
D101
RSB6.8STE61
D201
RSB6.8STE61
Q302
EMX18
-1
-2
Q303
EMX18
-1
-2
Q301
UNR31A600LS0
C305
10
IC301
XC6401FF58DR
1
2
3
4
5
6
7
C307
10
R310
0
R312
0
R302
0
C319
4.7
C321
0.022
Q304
UNR31A600LS0
R314 0
CL101
CL201
PCM0_BCK
PCM0_ADDT
FB201
FB301
FB101
PCM0_LRCK
IC305
MAX4745ELB+TG069
1
CB1
2
NO1
3
GND
4
NO2
5
CB2
6
COM2
7
NC2
8
VCC
9
NC1
10
COM1
C208
0.1
R106
5.6
R206
5.6
11P
CN301
1
MIC_RIN
2
MIC_RIN
3
HP_R
4
HP_R
5
COM
6
COM
7
COM
8
MIC_L
9
MIC_L
10
HP_L
11
HP_L
R123
0
R223
0
150k
R304
220k
R305
220
R315
47
R105
47
R205
0.001
C301
470
R220
470
R120
0.0047
C116
0.0047
C216
1k
R313
1k
R307
D301
VMZ6.8NT2L
CL102
CL202
0.47
C326
6.3V
C316
22
0
C327
0
C328
0
C329
0
C330
EN1
GND
VOUT2
VOUT1
VSS
EN2
VIN
MUTING
MUTING
Q301, 304
MUTING CONTROL
SWITCH
SELECTOR
HEADPHONE/WM-PORT
IC305
(CHASSIS)
TB301
ADC_FILT+
VQ
DAC_FILT+
AGND
VA
AOUTA
AOUTB
VSS_HP
AIN1B
AIN1A
AFIL
TB
AFIL
TA
AIN2B/BIAS
AIN2A
MICIN2/AIN3B/BIAS
MICIN1/AIN3A
VL
VD
DGND
SDOUT
MCLK
SCLK
SDIN
AGND
LRCK
FL
YN
SDA/CDIN
SCL/CCLK
AD0/nCS
VA_HP
FL
YP
GND_HP
nRESET
IC302
A/D CONVERTER,
D/A CONVERTER,
HEADPHONE AMP
IC301
+1.8V REGULATOR
(5/6)
MAIN BOARD
J301
J
HP FLEXIBLE
PRINT BOARD
7
11
D
B
6
9
10
F
5
3
G
1
12
C
E
8
4
13
A
2
Note 2: IC301, IC302 and IC305 on the MAIN board cannot exchange with single. When IC301, IC302
and IC305 on the MAIN board are damaged, exchange the entire mounted board.
(Page 27)
(Page 22)
(Page 27)
Note 1: When the MAIN board is replaced, format it according to the “NOTE OF MAIN
BOARD REPLACING” (refer to page 4) of the servicing notes.
NWZ-A726/A726B/A728/A728B/A729
NWZ-A726/A726B/A728/A728B/A729
27
27
5-10. SCHEMATIC DIAGRAM - MAIN Board (6/6) -
• See page 31 for IC Block Diagrams.
IC B/D
4
MAIN
(1/6)
BOARD
BOARD
2
MAIN
(5/6)
BOARD
MAIN
(4/6)
1
BOARD
(1/6)
MAIN
3
BOARD
(5/6)
MAIN
5
BOARD
9
MAIN
(4/6)
0
0
3.7
3.3
3.7
0
0
0
0
3.7
2
3.7
2.9
2
2.9
1.8
2
0
3.3
3.7
0
2.7
2.7
3.7
3.7
0
0
3.7
2.9
0
TOTAL CURRENT
PLAY: 150mA
JL907
CN901
1
BATT +
2
BATT -
VCC_DCIN
VCC_VBUS
4.7uH
L902
4.7uH
L901
3300
R923
SSM3K15FV(TL3SONYZ)
Q901
S
TH901
150k
R922
0.1
C922
220k
R908
VDD_GP1_FB_J
USB_SUSPEND
CHG_XCHGEN
VCC_VBAT
VDD_UNREG_J
VDD_DDC3_J
VDD_DDC2_J
CHG_PEN2
CHG_XFLT
XCHG_DET
JL908
DGND
AGND
CHG_ICTL
10k
R920
22k
R919
C909
22
22
C910
220k
R910
470k
R911
10
C908
4.7
C902
4.7
C903
10
C904
10
C905
10k
R909
470k
R913
470k
R914
470k
R916
8200
R918
22
C912
0.1
C918
4.7
C919
10
C920
10
C921
10k
R926
68k
R927
0.01
C913
2.2
C914
1
C916
XC61GN3102HR
IC902
1
SS
2
OUT
3
IN
0.1
C917
CL910
CL911
CL912
CL913
CL915
CL916
0.001
C924
10
C925
0
R935
MAX8671CETL+TG069
IC901
1
USUS
2
DC
3
USB
4
FB5
5
PV5
6
OUT5
7
PG2
8
LX2
11
FB2
12
/DOK
13
REG3L
14
BP
15
OUT4
16
PV4
21
SSKP
22
PV1
23
LX1
24
PG1
31
CISET
32
CT
41
EP
33
THM
34
BA
T
35
SYS
36
PEN1
37
CST2
38
/UOK
39
CST1
40
PEN2
9
PV2
10
/CEN
17
BVSET
18
GND
19
FB1
20
EN
25
PG3
26
LX3
27
PV3
28
VL
29
FB3
30
DISET
0
R931
0
R930
0
R928
R912
0
0
R901
0
R906
0
R907
R904
0
0
R929
FB852 0
VDR851
470p
C855
LINE_OUT_R
USB_DP
R855 47k
DBG_UART_TXD
CRD_DET
USB_DM
D851
RB060M-30TR
FB857
0
R853
1k
R851
1k
CRD_AD
LF851
DBG_UART_RXD
R857
470k
0.01
C854
LINE_OUT_L
0.47
C856
C853
100p
R858 10k
FB854
0
VDD_GP1_J
FB851 0
FB855
0
R859 1k
FB858
R862 10k
TXD_PUCTL
VDR852
CN851
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
VDD_UNREG_J
VCC_VBUS
(CHASSIS)
TB901
LITHIUM ION
STORAGE
3.7V 610mAh
BATTERY
IC901
POWER CONTROL
CHARGE CONTROL
IC902
VOLTAGE DETECT
2P
(6/6)
MAIN BOARD
D+
CRD_AD
GND
DCIN
VIDEO-IN/OUT/OPEN
AU_L_OUT
VIDEO-GND/GND
VIN
UNREG_OUT
(WM-PORT)
RXD/WAKE
D-
GND
RESERVE
USB_DET
DIGITAL_OUT/OPEN
22P
AU_COM
AU_R_OUT
AU_R_IN
GND
TXD/SLEEP
RESERVE(OTG)
AU_L_IN
12
2
B
3
10
E
4
9
5
6
D
G
C
A
7
F
8
1
11
TB851
Note 2: IC901 and IC902 on the MAIN board cannot exchange with single. When IC901 and IC902 on
the MAIN board are damaged, exchange the entire mounted board.
(Page 22)
(Page 25)
(Page 26)
(Page 25)
(Page
22)
(Page 26)
Note 1: When the MAIN board is replaced, format it according to the “NOTE OF MAIN
BOARD REPLACING” (refer to page 4) of the servicing notes.
NWZ-A726/A726B/A728/A728B/A729
NWZ-A726/A726B/A728/A728B/A729
28
28
5-11. SCHEMATIC DIAGRAM - SW Board (1/2) -
MAIN
A
BOARD
CN601
(1/6)
(2/2)
21
BOARD
SW
15k
R887
10k
R882
C881
0.047
0.01
C882
22k
R884
15k
R883
10k
R881
CL890
CL891
CL888
LCD_G4
LCD_G5
LCD_R0
LCD_R1
LCD_R2
LCD_R3
LCD_R4
LCD_R5
SPI0_CLK
SPI0_MOSI
SPI0_LCD_XCS
LCD_BLTCTL
LCD_PWM1
LCD_B1
LCD_B0
LCD_B2
LCD_B3
LCD_B4
LCD_B5
LCD_ENABLE
LCD_PXCLK
DGND
VDD_UNREG_J
100
R888
LCD_G3
LCD_G2
LCD_G1
LCD_G0
LCD_HSYNC
LCD_VSYNC
LCD_PON
VDD_ANA_F
VDD_LOG_F
42P
CN881
1
KEY_AD0
3
KEY_AD1I
5
SPI0_LCD_XCS
7
DGND
9
LCD_BLTCTL
11
LCD_PWM1
13
DGND
15
VDD_UNREG_J
17
LCD_B0
19
LCD_B1
21
LCD_B2
23
LCD_B3
25
LCD_B4
27
LCD_B5
29
LCD_ENABLE
31
LCD_PXCLK
33
LCD_HSYNC
35
LCD_VSYNC
37
LCD_PON
39
VDD_ANA_F
41
VDD_LOG_F
2
KEY_GND
4
KEY_AD1O
6
KEY_WAKE
8
DGND
10
SPI0_MOSI
12
SPI0_CLK
14
DGND
16
VDD_UNREG_J
18
LCD_G5
20
LCD_G4
22
LCD_G3
24
LCD_G2
26
LCD_G1
28
LCD_G0
30
LCD_R5
32
LCD_R4
34
LCD_R3
36
LCD_R2
38
LCD_R1
40
LCD_R0
42
DGND
S896
HOME
BACK
S891
S894
S892
S893
S895
S890
OPTION
PWR OFF
SW BOARD (1/2)
G
4
A
C
B
D
3
E
2
5
1
8
6
F
7
Note: CN881 on the SW board cannot exchange with single. When CN881 on
the SW board is damaged, exchange the entire mounted board.
(Page 29)
(Page 22)
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