Schematic Diagram - Main Section (6/6) - Sony NW-A805 Service Manual

5-9. SCHEMATIC DIAGRAM – MAIN Section (6/6) –
1 2
MAIN BOARD
A
B
VDD_UNREG
VDD_DDCOUT20
VDD_GP1
11
XUSB_OK
XCHG_DET
MAIN
CHG_XFLT
BOARD
C
(3/6)
CHG_ICTL
(Page 24)
CHG_XCHGEN
CHG_PEN2
USB_SUSPEND
VCC_VBAT
D
CN901
2P
BATT+ 1
BATT- 2
LITHIUM ION
STRAGE BATTERY
3.7V 610mAh
E
VCC_VBAT
VCC_DCIN
F
8
MAIN
BOARD
(4/6)
(Page 25)
G
DGND
VCC_VBUS
AGND
NW-A805/A806/A808
• See page 28 for IC Block Diagrams.
3 4
(6/6)
XUSB_OK
XCHG_DET
CHG_XFLT
CHG_ICTL
CHG_XCHGEN
C917
CHG_PEN2
USB_SUSPEND
CL901
CL902
CL903
C901
10
2.9
C902 0.1
2.9
R908 10k
CHG_XCHGEN 2.7
2.7
R904 470k
CHG_PEN2 0
R903
470k
R921
220k
CL904
CL905
CL906
CL907
CL908
CL909
Q903
2SK3541T2L
CL910
CHARGE CONTROL
2.9
CHG_ICTL
S
5 6
C911
0.001
C903
0.1
R923
R907
470k R911
470k
470k
C909
C915
22
22
22
IC B/D
25 24 23 22 21 20 19
3.7
IC901
/DONE BAT
3.7
DC BAT
POWER CONTROL,
0
DC CHARGE CONTROL USB
0
IC901
/CEN USB
MAX8677AETG
PEN1 TSET
0
PEN2 USUSS
7 8 9 10 11 12
R912
R919
10k 8200
0
R905
1500
R906 TH901 R910
3300 33k
27 27
7 8 9
IC903 IC B/D
DC/DC CONVERTER
IN D1
GND INP
IC903
SS MAX1557ETB LX
C912
OUT PGND
22
XSHDN D2
11
C908 C910
C920
0.1
0.1 4.7
R922
220k
USB_SUSPEND
NW-A805/A806/A808
10 11
5
R902
0
VDD_UNREG
MAIN
DGND BOARD
(2/6)
(Page 23)
L901
µ
4.7 H
VDD_DDCOUT20
C921
22
R913
10k
2
R914
47k
MAIN
BOARD
(1/6)
R915
(Page 22)
C913 33k
22
DGND
R901
0
AGND
10
DGND
MAIN
VDD_UNREG
BOARD
(5/6)
(Page 26)