Acer RB23WABAS service manual Acer H233H Block digram

Page 41

8.BLOCK DIAGRAM AND SCHEMATIC

8.1 BLOCK DIAGRAM

1

2

3

4

Backl i ght

A

USB BD

P301

B

 

Power &

P301

 

Invertor

Power

C

Board

Con.

 

 

 

 

 

D

AC

AUDIO

 

110/220V

P308

Input

 

Input

Audio

 

 

 

 

 

 

 

 

 

E

ACER H233H Block digram

F

G

5

6

7

8

9

10

11

12

LCD Modul e

VLCD

P307

 

Panel Con.

 

Brightness, Inv_On/Off

 

 

 

 

LVDS

I307

 

Audio EN,VOLUME,MUTE

 

 

 

 

 

 

24LC16B

 

 

 

 

 

 

 

 

USB EN

 

 

 

 

 

 

NVRAM

P309

 

 

 

 

 

 

 

 

 

 

 

 

 

+5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Key

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I308

 

Con.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I304&I305

 

 

 

 

 

 

 

 

DC-DC

 

 

 

 

Scal er

 

P306

5V-3.3V

 

 

 

 

 

 

 

3.3V-1.2V

 

 

RTD2482/RTD2482D/RTD2482RD

 

Key

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Con.

X301

I309

Flash ROM

 

 

 

 

XTAL

 

 

 

 

27MHZ

SST 25VF010A

 

 

 

 

 

 

 

 

 

PMC 25LV010A

 

 

 

 

 

I306

 

I303

 

 

I302

DDC

TMDS

DDC

 

 

DDC

24LC02B

24LC02B

TMDS

R,G,B,Hs,Vs

24LC02B

 

 

 

 

HDMI_DDC_SCL,

 

DVI_DDC_SCL,

 

 

VGA_DDC_CLK,

HDMI_DDC_DAT

 

DVI_DDC_DAT

 

 

VGA_DDC_DAT

P305

 

 

P303

 

P302

HDMI

 

 

DVI-D

 

D-SUB

HDMI

Di gi tal

Anal og

Vi deo

Vi deo

Input

Input

Input

 

13

POWER KEY BD

OSD KEY BD

A

B

C

D

E

F

G

ACER H233H

 

40

 

 

 

Go to cover page

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PCB No.

Image 41
Contents Service Go to cover Scope Video Signal Amplitudes Content Analog input VGA treats all timings as PC-timings Defects 5.1Visual Inspection Diameter, they must be at least 15mm apart Main OSD Menu OSD Volume management OSD Go to cover Exploded Diagram Packing Exploded Diagram Exploded Diagram Product Exploded Diagram Plug in parallel direction Angel 5 degrees S11 S17 S18 S21 Go to cover Open the carton with a proper tool S10 S17 S21 Does OSM display when you push Menu key Next Circuit section Printed wire broke between P301 pin2, R304 and I308 pin Troubleshooting Abnormal screen for VGA Go to cover Troubleshooting Abnormal OSM display adjust problem Troubleshooting Abnormal plug and play operation for VGA Go to cover Troubleshooting Troubleshooting Checking the resolution change IC movement Troubleshooting Checking the DC/DC converter circuit Firmware Upgrade Process Go to cover Ssmeans Samsung Panel Hdmi Transfer DVI Connection Hdmi Transfer DVI Connection Acer H233H Block digram PCB No P01 TO263 ACERLCDH233HSCHEMATICSINTERFACEBDVGA & DDC Input ACERLCDH233HSCHEMATICSINTERFACEDVI & DDC Interface HDMI19P Acer H233H NC/A-POINT 6PIN ACERLCDH233HSCHEMATICSOSD Keybd Ledorange Ledwhite Power Board TOP Silk ACERLCDH233HLAYOUTSINTERFACE Board 1234567