Acer B243W Schematic Diagram, Main Board, Chapter, Power Input, For Scaler Power, Power On, R714

Schematic Diagram

Main Board

POWER INPUT

Chapter 7

CN701

1+12V

2+12V

3+12V

4GND

5+5V

6+5V

7+5V

8GND

9GND

10GND

11ON_OFF

12Dimming

13PS_ON

14GND

CONN

POWER ON	PANEL_EN
	LOW
POWER OFF	HI
	R714
	NC
6 PANEL_EN
	R717
	4K7 1/10W 5%

		+12V
				+12V		6
		REV:C
		+	NC C701		NC C702
	+5V		1000uF/16V		0.1uF
		+5V	3,6
REV:C
	+			+5V				PS_ON/OFF BKLT-PWM
	C705
	1000uF/16V						POWER ON
			REV:C		R701			LOW	LOW
					10K 1/10W 5%		POWER SAVING	HI	HI
						Q701	POWER OFF	HI	HI
						2N3904SREV:C -RTK/PS
			C727				PS_ON/OFF 6
			0.1uF			R702
						4K7 1/10W 5%
	+5V
		R703	REV:C
		10K 1/10W 5%		R704
				1K 1/10W 5%
		R705
	C709	4K7 1/10W 5%				BKLT-EN	6
	0.1uF	Q702
		2N3904S-RTK/PS			+5V
						R706
						1K 1/10W 5%
		REV:C
		R707
		1K 1/10W 5%			Q703
	REV:C
					2N3904S-RTK/PS
	NC C713						BKLT-PWM 4
	22uF 16V					R708
						4K7 1/10W 5%
						+VLCD
							+VLCD 7
	+5V
	REV:C					5 6 7 8
						Q705	+5V
	R710					D1 D1 D1 D1
R711	100K 1/10W 5%
10K 1/10W 5%		REV:C				G1 S1 S1 S1
		R712
		100K 1/10W 5%					AO4403
						4 3 2 1
						C718
	Q706					0.068uF
Q707	2N3904S-RTK/PS
2N3904S-RTK/PS		Q708			NC C721
C723		2N3906S-RTK/PS /NC			0.22uF /NC
NC

					+3.3V
					+3.3V		4
FOR SCALER POWER					FB701
+5V			U701		120 OHM		VCPU
		3	VIN VOUT	2	1	2	VCPU 6
REV:C		1	ADJ		REV:C
+	C706		AIC1084-33PM	C707	C704		+3.3AVDD
C703	0.1uF		SOT-263	0.1uF	22uF 16V
1000uF/16V
							+3.3AVDD 4

+5V

		U702SOT-252						+3.3V_SD
	3									+3.3V_SD 4,5
		Vin			Vo2	2
			ADJ				REV:C
							C710		C712
C708		AIC1084-		33PE		22uF 16V			0.1uF
0.1uF		1

+5V									+1.8V
			Q704				L701
			AO3401				22uH
									+1.8V	4
								REV:C
						D701	R709	+ C714	C715
						SSM54PT22R 1/10W 5%		470UF 16V	0.001uF
			U703				C716
		8	VIN		FB	4	0.001uF
R713		7	PGATE	N.C		3
33K 1/10W 5%	C719	6	PWGND AGND			2		C720
	0.001uF							0.001uF
		5				1	R716
			ADJ	ISENSE
							15K 1/10W 5%
			LM3485
							R719
							31.6K	1% 1/10W

	+12V
	+
FOR USB POWER	C724
	NC

5

4

6 USB_CTRL USB CTRL 3

2

1

CN702

NC

45