AOC 177Sa-1 User Manual download pdf (Page 19)

17" LCD Color Monitor AOC 177Sa

TSUM56AK

R716

R720 0 1/16W

R704

100 1/16W

R32

1UF

P.S: The 1N4148 Vf=0.7V~1V can't meet

LDO spec. The BAT42, Vf is OK but the

If=200mA(forward current) can not

meet current spec.

VLCD 5

For RSDS and Panel VCC=12V

C704

Q701

PMBS3904

VLCD_12V 5

+3V3

Adj_BACKLIGHT

+5V3,4 PC5V 3

PC5V

BL_ADJ(DC)

C32

C718

0.1uF

+5V

R715

TO-263

+3V3

C707

100uF/25V

C715

0.1uF

GND

+5V

R725

4.7K 1/16W

+12V

Q705

AO3401L

+3V3

R726 NC/4K7

C708

1uF

C710

100uF/25V

POWER

15Monday , May 09, 2005

Tit le

Size Document Number Rev

Date: Sheet

+12V

R732

10 1/16W

R31

R705

4.7K 1/16W

+3V3

VCC1.8 4

+5V

CN701

CONN

C714

0.1uF

+12V

+5V

VLCD

+5V

R722

1uF

Q707

PMBS3904

on_BACKLIGHT 4

P W M

D702

1N4148

MMBT3904

VCTRL 4

4.7K

R729

NC/10K

+5V3,4

+5V

C51

C709

0.1uF

GND

4K7

+5V

C720

NC/0.1uF

U702

AIC1084-33PM

VIN

ADJ

VOUT

R721

0 1/16W

VCC3.3 4

R707

4.7K 1/16W

VLCD_12V

VCC1.8

R713

C702

4.7uF/16V

R723 51K 1/16W

C717

10uF/16V

R714

10K 1/16W

GND

VCC3.3 4

C713

0.1uF

+5V

GND

R730

0 1/16W

+5V

R710 NC

D C

Q703

PMBS3904

Recommond to used "Blue" parts circuit

for VCC1.8V if you want to suppoert DDC

function when system power off

0V ~ 3.3V

C716

0.1uF

R703

2K 1/16W

+5V

R706

Q706

PMBS3904

1UF

VCC5V

C701

C703

100uF/25V

4.7K

R717

10K 1/16W

N.C

R29

R708

10K 1/16W

+12V

R701

1K 1/16W

R728

NC/4K7

C705

1uF/16V

D704

SMAL140

on_Panel_12V4

D704(SSM12L) Vf=0.38V and If=1A.

So when system power on, the

system loading is about 400mA

(3.3V is about 200mA and 1.8V is

about 200mA), So D35 changed

from 1N4148(or BAT42) to

SSM12L(schottky diode).

C711

0.1uF

VCC3.3

BL_ADJ

R731

R709

0 1/16W

R724 51K

+12V 4

+5V3,4

D701

1N4148

+12V

SOT-223

12/21 MODIFY

C706

0.1uF

on_Panel4

R719

NC/10K

R712 4.7K 1/16W

D703

BAT54C

+5V

C719

NC/10uF / 16V

C712

100uF/25V

R727

10K 1/16W

BL_ADJ

R702

51 1/16W

0V ~ 5V

R33

BL_ON

GND GND

R711

10K 1/16W

U701

NC/LT1117-18

3 2

VI VO

GND

Q702

CHT2907

+5V

R718

NC/10K

4.7K

R31

Q704

AO3401L

VCC3.3

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AOC 177Sa-1 User Manual Page 19

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