Manual de servico televisor semp toshiba dl2970(a)w, dl3270(a)w e dl3970(a)f

Page 25

ESQUEMAS ELÉTRICOS PCI Principal DL2970(A)W

5V Standby Power(option) 3.3V Standby Power

3

AGND

PGND

8 R14

4

4

51K/0402/1%

R18

1N4148/SMD223/NC R7 D86 20K/0402/5%/NC

R2

CA2 +

C6

470uF/16V/CE8 0.1uF/0402/16V

1

1nF/0402/16V 0.1uF/0402/16V 1nF/0402/16V R6 15K/0402/5%

R1

U10

3

C19 C16

FB

10uH_4A

IN

C17

SS

NC

L1

9

OUT

7

LX

ADJ

CE2 220uF/16V/CE6.3 + C7 0.1uF/0402/16V

R29 2 33K/0402/5% VIN R2 6 EN 100K/0402/5% 5 COMP

+5V_Standby

2

U50 AOZ1034PI/SOP8

1

+12V_PWR

+5V_Standby

+3.3V_Standby

AMS1117-3.3/SOT23

R39 1.2K/0402/5%/NC

9.1K/0402/1%

Vout=0.8V*(1+R1/R2)

C71 C73 2.2uF/0603/16V 2.2uF/0603/16V

R41 0R/0402/5%

C72 C70 0.1uF/0402/16V 0.1uF/0402/16V

If power input has change, this part will do option

VDDC POWER

C22

3

100uF/16V/CE6.3 1nF/0402/16V 0.1uF/0402/16V 0.1uF/0402/16V R28 15K/0402/5%

SS AGND

NC FB PGND

8 4

4

R11 100R/0402/5% R46

R1

CA4 220uF/16V/CE6.3 +

1 DCDC R47

C13 0.1uF/0402/16V

4.7K/0402/1%

R2

10K/0402/1%

U9 AMS1117-3.3/SOT23

3

7

4.7uH_3A

VCC_VSENSE

EN COMP

L4

IN

C14

5

9

OUT

CE5 +

C23

6

LX

VDDC1.15V

ADJ

R44 100K/0402/5%

VIN

1.8A

2

2

U52 AOZ1051PI/SOP8

1

+12V_NORMAL

+5V_Normal R48

+3.3V_Normal

1.2K/0402/5%/NC C49

C55

2.2uF/0603/16V 2.2uF/0603/16V C51 0R/0402/5% C50 0.1uF/0402/16V 0.1uF/0402/16V R49

Vout=0.8V*(1+R1/R2)

25


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Manual de servico televisor semp toshiba dl2970(a)w, dl3270(a)w e dl3970(a)f by Portal da Eletrônica - Issuu