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
17
17
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM - MAIN Section -
USB DATA0 – USB DATA15
SD-RAM
IC701
DP
A3
DM
A4
USB CONTROLLER
IC501
CD0 – CD15
SDR_DATA0 –
SDR_DATA31
SDR_DATA31
SDR_A0 – SDR_A12
XINT E3
A/D CONVERTER,
D/A CONVERTER,
D/A CONVERTER,
HEADPHONE AMP
IC302
LEVEL SHIFT
IC509
IC508
AB0_D0 – AB0_D15
AB0_A1 – AB0_A8
USB_INT1
AC5
XCS H2
AB0_CSZ2
F22
XRD G3
AB0_RDZ
J19
XDACK F4
AB0_XDACK
F23
XDREQ G4
AB0_XDMARQ
E24
XWRH F3
XWRL H3
AB0_WRZ
H16
XRESET D1
RESETZ
P10
SDR_BA0
AB5
USB_XRST
AB13
USB_INT2
AB14
SDIN
PM0_SO AC22
32
11
SDA/CDIN
SPIO_SO AC8
2
SCL/CCLK
SPIO_SK AC7
3
AD0/nCS
SPIO_SCZ2 AD7
4
MCLK
REFCLKO U18
30
SDOUT
PM0_SI AD22
29
SCLK
PM0_CLK AC21
31
LRCK
PM0_SEN AB22
1
nRESET
ADA_XRST AC20
HP_XMUTE Y3
25
MUTING
Q302
CN851 (1/3)
17
AU_R_OUT
14
AU_L_OUT
3
D+
4
D–
(WM-PORT)
B8
XI
C8
XO
USB ADDRESS1 – USB ADDRESS8
CA1 – CA8
DQ0 – DQ31
BA0 J7
SDR_BA1
T4
BA1 H8
SDR_CLK
AA5
CLK J1
SDR_CSZ0
T3
CS J8
SDR_CKE0
T1
CKE J2
SDR_WEZ
R5
WE K8
SDR_CASZ
U8
CAS K7
SDR_RASZ
T5
RAS J9
SDR_DQM0
P5
DQM0 K9
SDR_DQM1
R4
DQM1 K1
SDR_DQM2
R3
DQM2 F8
SDR_DQM3
R2
DQM3 F2
A0 – A12
SDR_D0O – SDR_D31
SDR_A00 – SDR_A12
NAND FLASH
MEMORY
IC751
NAND_DA0 –
NAND_DA7
NAND_DA7
NAND_ALE
D3
I/O1 – I/O8
ALE 17
NAND_CLE
E9
CLE 16
NAND_CEZ0
M9
XCE1 9
NAND_CEZ1
C2
XCE2 10
NAND_CEZ2
B3
NAND_CEZ3
C3
NAND_REZ
E3
XRE 8
NAND_WEZ
A4
XWE 18
NAND_RBZ0
D2
R/B1 7
NAND_RBZ1
H8
R/B2 6
NAND_RBZ2
J8
NAND_RBZ3
K8
NAND_D0O – NAND_D07
NAND FLASH
MEMORY
IC752
I/O1 – I/O8
ALE 17
CLE 16
XCE1 9
XCE2 10
XRE 8
XWE 18
R/B1 7
R/B2 6
RESET SWITCH
IC502
(NWZ-A729)
(NWZ-A728/A728B)
X501
12MHz
AOUTA
10
AOUTB
MUTING
Q303
MUTING
CONTROL
Q304
MUTING
CONTROL
Q301
SPIO_XCS0 AC6
CN851 (2/3)
(WM-PORT)
(WM-PORT)
: AUDIO
SIGNAL PATH
(NWZ-A729)
(NWZ-A728/A728B/A729)
(NWZ-A728/A728B/A729)
(NWZ-A728/A728B/A729)
SYSTEM CONTROLLER
IC601 (1/2)
J301
J
HP_R
HP_L
SPIO_SO
SPIO_SK
SPIO_SK
SPIO_LCD_XCS
SPIO_SO,
SPIO_SK,
SPIO_LCD_XCS
COM1
10
COM2
6
1
7
NC2
9
NC1
4
NO2
2
NO1
HEADPHONE/WM-PORT
SELECTOR
IC305
CB1
5
CB2
A
CRD_LINEOUT AA1
NWZ-A726/A726B/A728/A728B/A729
NWZ-A726/A726B/A728/A728B/A729
18
18
5-2. BLOCK DIAGRAM - PANEL, POWER SUPPLY Section -
POWER CONTROL
IC901
VCC_DCIN
SYSTEM CONTROLLER,
POWER CONTROL
IC601 (2/2)
VCC_VBUS
VCC_VBAT
VDD_UNREG_J
VDD_DDC2_J
20
DCIN
11
USB_DET
12
UNREG_OUT
10
TXD/SLEEP
8
RXD/WAKE
9
CRD_AD
KEY_AD0
C6
KEY_AD1
B6
EXTRST
G4
XHOLD_KEY
AD4
KEY_WAKE
AD5
SHEET KEY
&
S890 - 896
WAKE UP SWITCH
Q603
T26
CKI
U26
CKO
X603
11.2896MHz
AC26
OSCIN
AB26
OSCOUT
X602
32.768kHz
BKBAT
USB +1.8V
USB +3.1V
AD17
PSM_LODET U14
CN851 (3/3)
(WM-PORT)
(WM-PORT)
35
2
DC
3
USB
CHG_ICTL
34
BAT
CHARGE
LITHIUM ION
STORAGE
BATTERY
3.7V 610mAh
SYS
8 LX2
VDD_DDC3_J
23 LX1
20 EN
31
Y2
CISET
12 /DOK
CHG_XCHGEN
10
V10
/CEN
CHG_PEN2
40
W8
PEN2
USB_SUSPEND
1
AB8
USUS
XCHG_DET
39
AC4
CST1
CHG_XFLT
37
AB4
U70_SOUT T17
U70_SRIN T18
CRD_DET AB3
CRD_AD C8
CST2
VOLTAGE
DETECT
IC902
CHARGE
CONTROL
Q901
TXD_PUCTL AB2
+3.1V
REGULATOR
IC602
+1.8V
REGULATOR
IC504
+3.1V
REGULATOR
IC503
HP/WM-PORT +1.8V
+1.8V
REGULATOR
IC301
VDD_ANA_F
VDD_ECO_J
VDD_ECO_J
VDD_GP1_J
VDD_GP1_FB_J
VDD_GP3
VDD_GP5
VDD_GP5
VDD_HP_F
VDD_LO_F
VDD_LOG_F
VDD_PLL_S
S601
RESET
S602
HOLD
OFF
ON
LCD_PXCLK P23
LCD
ASSY
R0 – R5
LCD_R0 – LCD_R5
6
G0 – G5
LCD_G0 – LCD_G5
B0 – B5
DOTCLK
LCD_HSYNC K22
HSYNC
LCD_VSYNC K24
LCD_PON W3
LCD_BLTCTL V17
LCD_PWM1 AD23
VSYNC
CATHODE (1)
Q801
CATHODE (2)
CATHODE (3)
CATHODE (3)
SDI
SCL
CS
RESET
LCD_ENABLE K23
DEN
ANODE
LCD_B0 – LCD_B5
LED
CONTROL
IC801
SPIO_SO
SPIO_SO
SPIO_SK
SPIO_LCD_XCS
SPIO_LCD_XCS
A
SPIO_SO, SPIO_SK, SPIO_LCD_XCS
6
6
SIGNAL PATH
: VIDEO
NWZ-A726/A726B/A728/A728B/A729
NWZ-A726/A726B/A728/A728B/A729
19
19
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specifi ed.
•
C : panel designation.
•
A : B+ Line.
• Power voltage is dc 3.7 V and fed with regulated dc pow-
er supply from CN901 pin
1 and pin 2 on the MAIN
board.
• Voltages and waveform are dc with respect to ground un-
der no-signal conditions.
no mark : PLAY BACK
• Waveform is taken with a oscilloscope.
Voltages variation may be noted due to normal production
• Waveform is taken with a oscilloscope.
Voltages variation may be noted due to normal production
tolerances.
• Voltages are taken with a VOM (Input impedance 10
MΩ).
• Voltage variations may be noted due to normal production
tolerances.
• Circled number refer to waveform.
• Signal path.
F :
AUDIO
L :
VIDEO
• The voltage and waveform of CSP (chip size package)
cannot be measured, because its lead layout is different
form that of conventional IC.
form that of conventional IC.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note:
•
•
Y : parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• MAIN and SW boards are multi-layer printed board.
However, the patterns of intermediate-layers have not
However, the patterns of intermediate-layers have not
been included in diagrams.
• Indication of transistor.
C
B
These are omitted.
E
Q
Caution:
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts on the parts face side seen from
the pattern face are indicated.
Parts on the pattern face side seen from
the parts face are indicated.
the pattern face are indicated.
Parts on the pattern face side seen from
the parts face are indicated.
• Lead layouts
surface
CSP (Chip Size Package)
Lead layout of conventional IC
NWZ-A726/A726B/A728/A728B/A729
NWZ-A726/A726B/A728/A728B/A729
20
20
5-3. PRINTED WIRING BOARD - MAIN Board (Side A) -
•
: Uses unleaded solder.
E
E
1
1
2
41
42
S
G
D
1C 2B 2E
1E 1B 2C
3
4
1
2
AF2
E4 D4
B4 A4
Y4
AA4
AB4
AC4
AE4
AF4
B3 A3
AE3
AF3
D6
B6 A6
AC6
AE6
AF6
D5
B5 A5
AC5
AE5
AF5
H4
J4
K4
L4
M4
N4
P4
AF1
D9
B9 A9
AC9
AE9
AF9
D10
B10
W1
G1 F1
AE25
H26
J23
K23
J26
K26
L26
M26
N26
P26
R26
T26
U26
V26
W26
G26 F26 E26 D26 C26 B26 A26
Y26
AA26
AC26
AE26
AE24
AF23
AF26
AF19
D20
H25
J25
K25
L25
M25
N25
P25
R25
T25
U25
V25
W25
G25 F25 E25 D25 C25 B25 A25
Y25
H23
AB25
AC25
AD26
AD25
AC16
AE16
L23
M23
N23
P23
R23
T23
U23
V23
W23
G23 F23 E23 D23
B23 A23
Y23
AB23
AC23
AE23
B19
B24 A24
AE19
AC14
AE14
B20 A20
AC20
AE20
D21
B21 A21
AC21
AE21
D22
B22 A22
AC22
AE22
AC12
AE12
D17
B17 A17
AC17
AE17
D18
B18 A18
AC18
AE18
D19
A19
AC19
AC10
AE10
D15
B15 A15
AC15
AE15
D16
B16 A16
A12
A7
AF12
D13
B13 A13
AC13
AE13
D14
B14 A14
A10
AF10
L11
D11
B11 A11
AC11
AE11
AF25
AF24
AF16
AF14
AF20
AF21
AF22
AF17
AF18
AF15
AF13
AF11
D12
B12
D7
B7
AC7
AE7
AF7
D8
B8 A8
AC8
AE8
AF8
E2
H1
J1
K1
L1
M1
N1
P1
R1
T1
E1
U1
V1
D1 C1 B1 A1
Y1
AA1
AB1
AC1
AD1
AE1
H2
J2
K2
L2
M2
N2
P2
R2
T2
U2
V2
W2
G2 F2
D2 C2 B2 A2
Y2
AA2
AB2
AC2
AD2
AE2
R4
T4
U4
V4
W4
G4 F4
C4
C3
C6
C5
C9
C10
C23
C19
C24
C20
C21
C22
C17
C18
C15
C16
C13
C14
C11
C12
C7
C8
AD4
AD3
AD6
AD5
AD9
AD24
AD16
AD23
AD19
AD14
AD20
AD21
AD22
AD12
AD17
AD18
AD10
AD15
AD13
AD11
AD7
AD8
H24
J24
K24
L24
M24
N24
P24
R24
T24
U24
V24
W24
G24 F24 E24 D24
Y24
AB24
AC24
E3
H3
J3
K3
L3
M3
N3
P3
R3
T3
U3
V3
W3
G3 F3
D3
Y3
AA3
AB3
AC3
E5
Y5
AA5
AB5
H5
J5
K5
L5
M5
N5
P5
R5
T5
U5
V5
W5
G5 F5
J22
K22
H22
L22
M22
N22
P22
R22
T22
U22
V22
W22
G22 F22 E22
Y22
AB22
AB26
AA25
AA23
AA24
AA22
E6
E9
E10
E20
E21
E17
E18
E19
E15
E16
E13
E14
E11
E12
E7
E8
AB6
AB9
AB16
AB14
AB20
AB21
AB12
AB17
AB18
AB19
AB10
AB15
AB13
AB11
AB7
AB8
J19
K19
H19
L19
M19
N19
P19
R19
T19
U19
V19
W19
J18
K18
H18
L18
M18
N18
P18
R18
T18
U18
V18
W18
H8
J8
K8
L8
M8
N8
P8
R8
T8
U8
V8
W8
H9
J9
K9
L9
M9
N9
P9
R9
T9
U9
V9
W9
H10
J10
K10
L10
M10
N10
P10
R10
T10
U10
V10
W10
J17
K17
H17
L17
M17
N17
P17
R17
T17
U17
V17
W17
H15
H16
H13
H14
H11
H12
J15
J16
J13
J14
J11
J12
K15
K16
K13
K14
K11
K12
U16
U14
U15
U13
U11
U12
V16
V14
V15
V13
V11
V12
W16
W14
W15
W13
W11
W12
2
4
3
1
2
4
3
1
6
10
1
5
H8
G8
F8
E8
D8
C8
B8
A8
H7
G7
F7
E7
D7
C7
B7
A7
H6
G6
F6
E6
D6
C6
B6
A6
H5
G5
F5
C5
B5
A5
H4
G4
F4
C4
B4
A4
H3
G3
F3
E3
D3
C3
B3
A3
H2
G2
F2
E2
D2
C2
B2
A2
H1
G1
F1
E1
D1
C1
B1
A1
5
1
3
4
A1
B1
C1
D1
E1
F1
G1
H1
J1
K1
L1
M1
N1
P1
R1
A2
B2
C2
D2
E2
F2
G2
H2
J2
K2
L2
M2
N2
P2
R2
A3
B3
C3
D3
E3
F3
G3
H3
J3
K3
L3
M3
N3
P3
R3
A7
B7
C7
D7
E7
F7
G7
H7
J7
K7
L7
M7
N7
P7
R7
A8
B8
C8
D8
E8
F8
G8
H8
J8
K8
L8
M8
N8
P8
R8
A9
B9
C9
D9
E9
F9
G9
H9
J9
K9
L9
M9
N9
P9
R9
2
4
3
1
2
3
R210
FB608
R601
R606
R607
R608
R220
R223
R611
R615
R616
R617
R618
R619
CN601
R620
R621
R622
R623
R624
R625
R626
R627
R628
R629
C208
R633
C210
R634
R636
R637
R638
R639
CL101
R252
CL102
JL006
JL007
C601
R256
C602
C603
R640
C604
R641
C606
C607
R643
C608
R644
C609
R646
R647
R648
R649
C610
VDR851
X602
C612
VDR852
X603
C613
FB854
R651
FB855
CL501
C616
FB856
CL502
FB857
R653
FB858
C619
R655
R656
R657
R658
C620
R660
C625
S602
R662
C626
R664
C629
R666
R669
R476
R477
C632
R672
R674
C638
R675
R676
R678
CL910
R679
CN851
(WM-PORT)
CL91
1
CL912
CL913
C640
CL914
C641
CL915
CL916
C643
C644
R681
C645
C646
R683
C648
R684
R686
Q301
Q302
Q303
Q304
C651
C652
C654
C656
C855
C661
C662
C856
C664
C666
C668
C669
C673
C674
LF851
C675
C679
FL501
IC601
C681
C683
FL701
C690
FB101
C691
C698
C699
FB301
R106
R108
R109
R110
R307
R502
D851
R506
R313
R507
R120
R123
R702
R519
R527
R528
C1
10
C305
C307
C116
C501
C502
C503
C504
C505
1
22
C506
C507
C508
CL201
C509
CL202
C701
C319
C703
C510
C705
X501
R935
C707
C321
C709
TH901
C71
1
C713
CL603
CL604
CL610
CL613
CL614
JL907
JL908
C925
CL622
CL623
CL624
CL628
CL629
D101
CL631
D301
CL641
CL644
CL645
CL646
Q603
IC305
L601
L602
CL851
CL852
CL853
CL854
CL855
IC501
CL856
IC502
CL857
CL858
FL601
IC701
FB201
R206
R208
R209
2E
2B
1C
2C
1B
1E
MAIN BOARD
(SIDE A)
1-875-443-
11
(11)
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
HOLD
OFF
ON
A
SW BOARD
CN881
CN881
Note 2: CN601, IC305, IC501, IC601 and IC701 on the MAIN board cannot exchange
with single. When CN601, IC305, IC501, IC601 and IC701 on the MAIN board
are damaged, exchange the entire mounted board.
are damaged, exchange the entire mounted board.
Ref. No. Location
• Semiconductor Location
Ref. No. Location Ref. No. Location
D101
C-4
D301
A-5
D851
G-2
IC305
D-5
IC501
E-3
IC502
G-6
IC601
F-4
IC701
D-4
Q301
C-2
Q302
C-5
Q303
C-3
Q304
C-2
Q603
H-13
(Page 30)
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.
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