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Acer AT3720A AT3720A Service Guide - Page 69

Replace, Component no sound

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14. Component no sound N Component Cable plug in? Mute turn-off Volume =30 no Check Component cable or Replacement Component Cable Component Source can Display? no Check Component cable or Replacement Component Cable Component Sound no Normal? Replacement IO/B Component Sound Normal? no Replace L1 M/B END Chapter 4 63

Section	Page
Features	7
System Block Diagram	9
System Block and Wiring Diagram	9
LCD Main Board Block Diagram	9
Board Layout	10
LCD TV Overview	11
AT3720A/AT3720B/AT3720 Front panle view	11
T3720A Rear panel view	12
AT3720B Rear panel view	13
AT3720 Rear panel view	14
AT3720A Remote controller	15
AT3720B Remote controller	17
AT3720 Remote controller	19
Basic connection	21
Connecting the power cord	21
Connecting an antenna/cable	22
Getting started watching your TV	22
Connecting external audio/video device	24
Connecting a DVD, VCR, STB or audio/video equipment	24
Connecting a camera, camcorder, video am or headphones	26
Connecting a PC or notebook computer	27
Selecting the input source	28
OSD navigation	30
Navigating the OSD with the remote control	30
Adjusting the OSD settings	31
Empowering Technology	33
Set-up Empowering mode	33
Default setting in different Empowering mode	34
OSD Navigation	35
Teletext	36
Advanced Features	37
PIP/PBP/POP	37
Lock TV	38
Hardware Specifications and Configurations	40
Electro / Optical	40
Mains	41
Audio / Acoustical	41
Hard / Soft Performance	42
Connectors	45
Environmental Requirements	45
Transportation	45
General Information	48
Before You Begin	48
Disassembly Procedure Flowchart	49
Disassembling Steps	50
AT3720A Troubleshooting Guideline	56
AT3720A Exploded Diagram	72

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