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
MAXTG069
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
A
VQ
D
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.