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
29
29
5-12. SCHEMATIC DIAGRAM - SW Board (2/2) -
• See page 31 for IC Block Diagrams.
IC B/D
SW
BOARD
(1/2)
21
C806
1
DGND
FB809
SPI0_CLK
0
R831
FB803
LCD_BLTCTL
LCD_B5
1
C808
LCD_PWM1
LCD_R5
FB816
FB810
JL805
LCD_G0
4700
R801
FB804
CN801
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
LCD_R3
0.47
C805
LCD_PON
FB817
LCD_B4
1
C807
FB811
LCD_G2
LCD_B1
LCD_R0
FB805
LCD_B0
0.22
C801
LCD_R4
LCD_R2
LCD_HSYNC
FB818
JL802
LCD_G5
VDD_LOG_F
FB812
LCD_B2
0.47
C804
FB806
LCD_G3
LCD_G4
LCD_VSYNC
JL803
FB819
SSM3K15FV(TL3SONYZ)
Q801
S
LCD_G1
LCD_B3
FB813
JL804
LCD_PXCLK
FB807
SPI0_MOSI
3300
R804
VDD_UNREG_J
100k
R830
VDD_ANA_F
FL801
JL801
LCD_ENABLE
1
C803
FB814
SPI0_LCD_XCS
100k
R829
0
R810
FB808
FB802
TPS60231RGTR
IC801
1
ISET
2
NC
3
NC
4
D3
5
D2
6
D1
7
PGND
8
VOUT
10
C1+
11
C1-
12
C2-
13
VIN
14
GND
15
EN1
16
EN2
9
C2+
LCD_R1
FB815
0
R808
0
R809
0
R803
R1
B3
B2
SDI
G4
R4
B4
DEN
GND
G2
VSYNC
RET
SDO
VDD(1.8V)
R5
R3
HSYNC
B0
GND
G0
G3
GND
R2
CATHODE(3)
NC
B5
DOTCLK
GND
ANODE
VCI(2.9V)
G1
CS
B1
GND
G5
R0
SCK
CATHODE(2)
CATHODE(1)
39P
LED CONTROL
IC801
INVERTER
SW BOARD (2/2)
ASSY
LCD
7
D
B
6
9
F
5
3
G
1
C
E
8
4
A
2
Note: CN801 and IC801 on the SW board cannot exchange with single. When CN801 and
IC801 on the SW board are damaged, exchange the entire mounted board.
(Page 28)
NWZ-A726/A726B/A728/A728B/A729
NWZ-A726/A726B/A728/A728B/A729
30
30
5-13. PRINTED WIRING BOARD - SW Board -
•
: Uses unleaded solder.
CL890
CL891
FB802
FB803
FB804
FB805
FB806
FB807
FB808
FB809
FB810
FB811
FB812
FB813
C807
C808
JL801
JL802
JL803
JL804
JL805
R881
R882
R883
R884
R887
R888
C881
C882
S890
S891
S892
S893
S894
S895
S896
CL888
17
1
4
5
8
S
G
D
12
9
16
13
R801
R803
FB814
R804
FB815
FB816
FB817
FB818
R808
FB819
R809
R810
CN801
R829
R830
R831
1
2
39
38
C801
C803
C804
C805
C806
CN881
41
42
1
2
IC801
Q801
FL801
SW BOARD
(SIDE A)
SW BOARD
(SIDE B)
1-875-442-
11
(11)
1-875-442-
11
(11)
A
B
C
D
1
2
3
4
5
6
7
8
9
10
11
12
13
LCD ASSY
HOME
BACK
PWR OFF
OPTION
A
MAIN
BOARD
CN601
Note: CN801, CN881 and IC801 on the SW board cannot exchange with single. When CN801, CN881
and IC801 on the SW board are damaged, exchange the entire mounted board.
(Page 20)
NWZ-A726/A726B/A728/A728B/A729
31
• IC Block Diagrams
– MAIN Board –
– MAIN Board –
IC301 XC6401FF58DR
CONTROL
ON / OFF
CONTROL
ON / OFF
REGULATOR 2
REGULATOR 1
REFERENCE
VOLTAGE
1
EN2
2
VIN
3
EN1
6
VOUT2
5
VOUT1
4
VSS
7
GND
CON2
6
VCC
8
NO2 4
NC2
7
CB1 1
GND 3
COM1
10
NC1
9
NO1 2
CB2 5
IC305 MAX4745ELB+TG069
B8
CHANNEL
OSCILLATOR
USB
NC
CPU INTERFACE
CONTROLLER
MULTI
TRANSCELVER
FIRST-IN FIRST-OUT
C8
F3
H2 E3 G4 F4
E1 C5 E2 D3 G1 F1 F2
H4
A1
C6
E8
D6
E8
D6
F8
E7
F7
E7
F7
G8
XWRH
CD0
CA8
CA7
CA6
CA5
CA4
CA3
CA2
XDACK
XDREQ
XINT
XCS
CD15
CD14
CD13
CD12
CD14
CD13
CD12
CD11
CD10
CD9
XI
XO
G3
XRD
TEST
MUX
H1
TESTEN
H8
ATPGEN
A8
BURNIN
MACRO
DEVICE SERIAL
INTERFACE
ENGINE
HOST SERIAL
INTERFACE
ENGINE
A6
R1
A3
DP
A4
DM
B1
VBUSFLG
C1
VBUSEN
C3
VBUS
D1
XRESET
D8
CLKIN
CONTROLLER
FIRST-IN FIRST-OUT
USB
DMA
CONTROLLER
H3
XWRL
VSS
G7 B7 B6 B5 B4 B2
CVDD
D7
LV
D
D
G2
LV
D
D
C7
LV
D
D
A7
LV
D
D
A2
HVDD
C2
HVDD
B3
HVDD
A5
H7
CD8
F6
G6
H6
H6
E6
F5
H5
F5
H5
G5
CD7
CD6
CD5
CD4
CD3
CD2
CD1
CD6
CD5
CD4
CD3
CD2
CD1
C4
CA1
D2
XBEL
VSS
VSS
VSS
VSS
VSS
/ENDPOINT
IC501 S1R72V27B05E10B
OVER CURRENT
THERMAL &
PROTECTION
CONTROL
ON / OFF
REGULATOR
VOLTAGE
B2
VIN
VCONT
GND
A1
REFERENCE
A2
B1
VOUT
OVER CURRENT
THERMAL &
PROTECTION
CONTROL
ON / OFF
REGULATOR
VOLTAGE
1
VIN
2
GND
3
VOUT
VCONT
5
GND
4
NC
REFERENCE
6
IC503, 602 TK63731AB1G0B
IC504 TK63718HCL-G
NWZ-A726/A726B/A728/A728B/A729
32
35
SYS
REF
1
USUS
2
DC
Li+/Li-PoLY
BATTERY
CHARGER &
SYSTEM LOAD
SWITCH
SMART
POWER
SELECTOR
SMART
POWER
SELECTOR
& CHARGER
BIAS
36
PEN1
37
CST2
38
/UOK
39
CST1
40
PEN2
41
EP
31
CISET
32
CT
33
THM
12
/DOK
17
BVSET
13
REG3L
19
FB1
18
GND
30 DISET
29 FB3
28 VL
28 VL
27 PV3
26 LX3
25 PG3
26 LX3
25 PG3
24 PG1
23 LX1
22 PV1
23 LX1
22 PV1
21 SSKP
4
FB5
5
PV5
6
OUT5
7
PG2
8
LX2
9
PV2
20
EN
16
PV4
15
OUT4
14
BP
11
FB2
3
USB
34
BA
T
10
/CEN
3.3V LOW
DROPOUT
HIGHEST
VOLTAGE
SELECTOR
REG1 DC-DC
CONVERTER
CONVERTER
REG3 DC-DC
CONVERTER
CONVERTER
REG4 LOW
DROPOUT
REG5 LOW
DROPOUT
REG2 DC-DC
CONVERTER
CONVERTER
14
GND
15
EN1
16
EN2
13
VIN
11 C1−
12 C2−
10 C1+
9 C2+
2
NC
1
ISET
3
NC
4
D3
6
D1
5
D2
8
VOUT
7
PGND
CHARGE
PUMP
CURRENT
SINKS
CONTROL
REFERENCE
– SW Board –
IC801 TPS60231RGTR
IC901 MAX8671CETL+TG069
C1
A
B1
GND
A1
VCCA
C2
B
B2
DIR
A2
VCCB
IC509 SN74AVC1T45YZPR
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