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

Page 45
Schematic Diagram

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

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Contents Acer B243W Service Guide Version Service Guide Version and RevisionRelease Date Revision HistoryDisclaimer CopyrightTrademarks ConventionsWarning For FCC Certified Models PrefaceSpecial Notes On LCD Monitors PrecautionsTable Of Contents Chart of B243W Monitor FeaturesChapter IntroductionStandard Test Conditions Electrical RequirementsLCD Monitor General Specification LCD Panel Specification General SpecificationsMechanical Information Electrical Characteristics Optical Specifications Support Timing VESA MODES HorizontalVertical Monitor Block Diagram Crystal Main Board DiagramSoftware Flow Chart Remark Symbol Main Board LayoutInstallation Screen Position Adjustment Height AdjustmentAttaching/Removing The Base Tilt SwivelMonitor Pivot Operating Instructions External ControlsFront panel controls eColor Management OSD How to Adjust a Setting Adjusting the picture Page Logo How To Optimize The DOS-Mode Plug And Play Plug & Play DDC2B FeatureUsing The Right Power Cord Disassembly Procedure Machine Disassembly3. Release the shield inverter and lamp connectors. Fig Page Page Troubleshooting This chapter provides troubleshooting information for the B243W1. No Power 2. No Picture LED is orange 3. White screen Is Key Pad Board connecting normally? Y NG Is Button Switch normally? 4. Key BoardConnect Key Board Replace Button Switch Replace Key Board OSD is unstable or not working NG5. Adapter/Inverter Board No power W/LED No Backlight Connector Information The following figure shows the connector locations on the monitorD-SUB connector DVI Connector Exploded Diagram Model B243W ChapterFRU Field Replaceable Unit List Picture Part ListAdapter Board Inverter Board Main Board USB Board LVDS Cable Main Board Schematic DiagramPOWER INPUT FOR SCALER POWERCABLE DVICONNECTMCUCONNECTION CABLE NOTREVC MST9200A-LF1M X 16bit =512K X 2Bank AUDIOMUTE For HDCPAUDIO AUDIOSTDBY HILVDS INTERFACE CONNECTCN703 CONNON/OFF Adapter boardT5A 250VAC PSON400V THE PIN ADDED FERRITE BEAD THE SOLUTION FOR EMIIn SVT Add it Improve EMIInverter board OVP Over Voltage ProtationQ810 C829 POWER CONNECTORPOWERKey POWER KeyEEPROM/Config PowerPower Regulator Upstream
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