Sony NWZ-A826 Service Manual page 25

5-8. SCHEMATIC DIAGRAM - MAIN Board (4/7) -
1 2
MAIN BOARD (4/7)
A 9
VCC_VBUS
VDD_UNREG_J
MAIN
BOARD
(7/7)
USB_INT
(Page 28)
VDD_GP1_J
VDD_GP1_FB_J
B
AB0_XWR
RESETZ
USB_XRST
PSM_L0DET
AB0_XDMARQ
AB0_XDMARQ
AB0_XDACK
AB0_XDACK
C
AB0_XRD
AB0_XRD
AB0_XCS2
AB0_XCS2
AB0_A1
AB0_A1
AB0_A2
AB0_A2
8 AB0_A3
AB0_A3
AB0_A4
AB0_A4
MAIN
AB0_A5
D AB0_A5
BOARD
(1/7) AB0_A6
AB0_A6
(Page
AB0_A7
AB0_A7
22)
AB0_A8
AB0_A8
AB0_D0
AB0_D0
AB0_D1
AB0_D1
AB0_D2
AB0_D2
AB0_D3
AB0_D3
E
AB0_D4
AB0_D4
AB0_D5
AB0_D5
AB0_D6
AB0_D6
AB0_D7
AB0_D7
AB0_D8
AB0_D8
AB0_D9
AB0_D9
AB0_D10
AB0_D10
F AB0_D11
AB0_D11
AB0_D12
AB0_D12
AB0_D13
AB0_D13
AB0_D14
AB0_D14
AB0_D15
AB0_D15
DGND
G
H
NWZ-A826/A826K/A828/A828K/A829
• See page 32 for IC Block Diagrams.
3 4 5
R519 220k
IC502
RESET SWITCH
C510
IC502
0.1u
TC7SG08AFS
1 VCC 5
R528
2
0
3 4
IC504
AB0_D1
+1.8V REGULATOR AB0_D2
AB0_D3
AB0_D4
6 5 4
IC B/D
AB0_D5
AB0_D6
AB0_D7
AB0_D8
AB0_D9
AB0_D10
1 2 3
AB0_D11
AB0_D12
IC B/D
AB0_D13
AB0_D14
IC503
CL502
AB0_D15
+3.1V REGULATOR
B2
IC503
TK63731AB1G0B
CL501
A2 VCONT VOUT B1
CSP
(Chip Size Package)
R522
0
C512 C511
A1
1 1
6 7 8
R511
220k
IC B/D
H4 F2 F1 G1 D3 E2 C5 E1 C4
G5 CD1
H5 CD2
F5 CD3
E6 CD4
H6 CD5
IC501
G6 CD6
USB CONTROLLER
F6 CD7
IC501
S1R72V27B05E10B
H7 CD8
G8 CD9
CSP
(Chip Size Package)
F7 CD10
E7 CD11
F8 CD12
D6 CD13
E8 CD14
C6 CD15
FL501
A5 B3 C2 A2 A7 C7 G2 D7 B2
R521
0
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.
25 25
NWZ-A826/A826K/A828/A828K/A829
9 10 11
R510 22
C1 A
B1 GND
C518 0.1
A1 VCCA
R527 R507
0 1k
D2 F4 G4 E3 H2 F3
XWRL H3
AB0_XRD
XRD G3
CLKIN
D8
XRESET D1
C503
1
VBUS C3
VBUSEN C1
VBUSFLG B1
DM A4
A3
DP
R506
6200
A6
R1
R505
100k
BURNIN A8
R504
100k
ATPGEN
H8
R503
100k
TESTEN H1
R502
C501
0
18p
XO C8
X501
XI B8
12MHz
C502
15p
B4 B5 B6 B7 G7 A1
Note 2: IC501, IC503, IC508 and IC509 on the MAIN board cannot ex-
change with single. When IC501, IC503, IC508 and IC509 on the
MAIN board are damaged, exchange the entire mounted board.
12 13
IC B/D
CSP
B C2
(Chip Size Package)
IC509
DIR B2
SN74AVC1T45YZPR
A2
VCCB
IC509
LEVEL SHIFT
IC508
INVERTER
R520 100k
IC508
TC7SG04AFS
VCC
1 5
2 GND
3 NC
4
C516
0.1
C517
0.1
USB_DM
1
USB_DP
MAIN
BOARD
(7/7)
(Page 28)