Sony NW-A806, NW-A808 service manual Main Board 6/6

1

2

3

4

5

6

7

8

9

10

11

R902

5

0

VDD_UNREG

MAIN

IC903

IC B/D

DGND

BOARD

(2/6)

(Page 23)

DC/DC CONVERTER

1

IN

D1

10

L901

2

GND

INP

9

IC903

4.7∝H

3

SS

MAX1557ETB

LX

8

VDD_DDCOUT20

B

VDD_UNREG

VDD_DDCOUT20

VDD_GP1

11

XUSB_OK

XUSB_OK

XCHG_DET

XCHG_DET

MAIN

CHG_XFLT

CHG_XFLT

C

BOARD

(3/6)

CHG_ICTL

CHG_ICTL

(Page 24)

CHG_XCHGEN

CHG_XCHGEN

CHG_PEN2

CHG_PEN2

USB_SUSPEND

USB_SUSPEND

CHGXFLT

XUSBOK

C907 22

XCHGDET

R907

R923

R911

470k

470k

470k

C917

C915

0.1

C909

22

22

22

C906

5 4

OUT

PGND

6 7

C912

C921

PGND

22

22

XSHDN

D2

11

R913

2

10k

R914

47k

MAIN

BOARD

(1/6)

C913

R915

(Page 22)

33k

22

DGND

C908

C920

C910

R901

0.1

4.7

0.1

0

AGND

VCC_VBAT

D

CN901

CL901

BATT+

2P

1

BATT-

2

CL902

LITHIUM ION

STRAGE BATTERY

3.7V 610mAh

E

C901

10

C902

0.1

VCC_VBAT

CHG_XCHGEN

VCC_DCIN

CHG_PEN2

R903

470k

F

R921

220k

8

CL904

2.7

2.7

2.7

3.7

3.7

2.7

IC B/D

25

24

23

22

21

20

19

GND

/FLT

/UOK

/DOK

SYS

SYS

/CHG

CL903

IC901

18

3.7

2.9

/DONE

BAT

3.7

1

2

DC

POWER CONTROL,

BAT

17

0

2.9

16

R908

10k

3

DC

CHARGE CONTROL

USB

2.7

IC901

15

0

4

/CEN

USB

R904

470k

2.7

MAX8677AETG

14

PEN1

TSET

5

0

0

13

6

PEN2

USUSS

PSET

VL

GND

CT

ISET

THM

7

8

9

10

11

12

CL905

MAIN

CL906

BOARD

CL907

(4/6)

(Page 25)

CL908

CL909

G

CL910

CHG_ICTL

DGND

VCC_VBUS

AGND

0

0

0

0

0

R919

10k

0

0.1

0.068

22k

R909

R906

C904

C905

S

3300