Acer AT3705-DTV User manual

AT3705
Service Guide
PRINTED IN TAIWAN
Service guide files and updates are available
on the AIPG/CSD web; for more information,
please refer to http://csd.acer.com.tw

II
Revision History
Please refer to the table below for the updates made on AT3705 service guide.
Date Chapter Updates

III
Copyright
Copyright © 2005 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in
any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without
the prior written permission of Acer Incorporated.
Disclaimer
The information in this guide is subject to change without notice.
Acer Incorporated makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular
purpose. Any Acer Incorporated software described in this manual is sold or licensed "as is". Should the
programs prove defective following their purchase, the buyer (and not Acer Incorporated, its distributor, or its
dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential
damages resulting from any defect in the software.
Acer is a registered trademark of Acer Corporation.
Intel is a registered trademark of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their respective holders.

IV
Conventions
The following conventions are used in this manual:
Screen messages Denotes actual messages that appear
on screen.
NOTE Gives bits and pieces of additional
information related to the current
topic.
WARNING Alerts you to any damage that might
result from doing or not doing specific
actions.
CAUTION Gives precautionary measures to
avoid possible hardware or software
problems.
IMPORTANT Reminds you to do specific actions
relevant to the accomplishment of
procedures.

V
Preface
Before using this information and the product it supports, please read the following general information.
1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION
decided for Acer's "global" product offering. To better fit local market requirements and enhance product
competitiveness, your regional office MAY have decided to extend the functionality of a machine (e.g.
add-on card, modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered
in this generic service guide. In such cases, please contact your regional offices or the responsible
personnel/channel to provide you with further technical details.
2. Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information
available on your regional web or channel. If, for whatever reason, a part number change is made, it will
not be noted in the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer
office may have a DIFFERENT part number code to those given in the FRU list of this printed Service
Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and
service of customer machines.

1
Chapter1 System Specifications ...............................................1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Chapter3 Machine Disassembly and Replacement ............32
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Chapter 4 Troubleshooting.........................................................50
Chapter 6 FRU (Field Replaceable Unit) List .........................94
Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
FRU List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Chapter 1 1
Introduction
This chapter describes the product specification for the LCD TV AT3705
Model AT3705-MGW AT3705-DTV
Panel spec
Panel manufacturer CMO CMO
Panel model name V370H1-L01 V370H1-L01
Technology Super MVA Super MVA
Resolution 1920x1080 1920x1080
Brightness (typ.) 550 nits 550 nits
Contrast Ratio (typ.) 800:1 800:1
Display color 16.7 M 16.7 M
Viewing Angle (typ.) H:176 ; V:176 H:176 ; V:176
Response Time (typ.) 12 ms (Gray to Gray) 12 ms (Gray to Gray)
Power Supply
Input 100V~240V-AC. 100V~240V-AC.
Max.Power Consumption 280W280W
Power Saving 5W 5W
Mechanical
Dimensions (WxHxD mm) 1018 (L) x 616 (H) x 210 (W)
mm
1018 (L) x 616 (H) x 210 (W)
mm
Weight (Kg) 36.0 36.0
Weight (lb) 79.3 79.3
Gross Weight (Kg) 42 42
Gross Weight (lb) 92.6 92.6
Wall Mounting 400mm x 200mm 400mm x 200mm
Mechanical
Dimensions (WxHxDmm) 1185 x 724 x 285 1185 x 724 x 285
Weight (Kg) 36.0 kg 36.0 kg
Weight (lb) 79.3 lb 79.3 lb
Gross Weight (Kg) 42kg 42kg
Gross Weight (lb) 92.6 lb 92.6 lb
Wall Mounting 400mm x 200mm 400mm x 200mm
Analog TV system
TV Color system NTSC NTSC
Sound system M M
Stereo system BTSC/ A2 BTSC/ A2
Analog TV Tuner quantity 1 1
Digital TV system
Digital TV Standard DVB-T DVB-T
Sound system
System Specifications
Chapter 1

2Chapter 1
ISO11172-3 layer1 & layer2
32KHz,44.1KHz,48KHz
ISO11172-3 layer1 & layer2
32KHz,44.1KHz,48KHz
Stereo system Dolby AC3 / PCM / MPEG (
Layer I & II ) Stereo 32 / 44.1 /
48KHz
Dolby AC3 / PCM / MPEG (
Layer I & II ) Stereo 32 / 44.1
/ 48KHz
SPDIF 2/4/6 Channel 2/4/6 Channel
Teletext Ye s Yes
Subtitle Yes Yes
EPG 7days EPG 7days EPG
Frequency 6 MHz 6 MHz
Video format 16bit YUV 16bit YUV
Resolution SD(480i) SD(480i)
Digital TV Tuner quantity 1 1
Audio system
Speaker 15W+15W 15W+15W
Audio Enhancement "BBE, SRS WOW" "BBE, SRS WOW"
Digital Audio Dolby Digital Dolby Digital
Terminal
Analog Tuner In Yes Yes
Digital Tuner In Yes Yes
Component1(HD) in "YPbPr/YCbCr,Audio R/L" "YPbPr/YCbCr,Audio R/L"
Component2(HD) in "YPbPr/YCbCr,Audio R/L" "YPbPr/YCbCr,Audio R/L"
Component3(HD) in "YPbPr/YCbCr,Audio R/L" "YPbPr/YCbCr,Audio R/L"
AV1 in "CVBS, S Video, Audio R/L" "CVBS, S Video, Audio R/L"
AV2 in "CVBS, S Video, Audio R/L" "CVBS, S Video, Audio R/L"
AV3 in "CVBS, S Video, Audio R/L" "CVBS, S Video, Audio R/L"
AV4 in "CVBS, S Video, Audio R/L" "CVBS, S Video, Audio R/L"
AV5 in "CVBS, Audio R/L" "CVBS, Audio R/L"
AV out "Analogy TV-CVBS out, Audio
R/L"
"Analogy TV-CVBS out,
Audio R/L"
SPDIF out Yes Yes
DVI-D in yes (with HDCP) yes (with HDCP)
HDMI in yes (with HDCP) yes (with HDCP)
PC D-sub in Yes Yes
PC Audio in Yes Yes
Headphone out Yes Yes
RJ45 in Yes NA
Media Gateway
Card Reader "CF, MMC, MS, MS PRO, SD," NA
Audio "LPCM, MP3, WMA7/8/9,
WAV"
NA
Video "MPEG1/2/4, DivX, XViD,
WMV9, Quicktime (*.mp4);"
NA
Video(HD) "MPEG2 (up to 1080i), MPEG4
(720p), WMV9 (720p)"
NA
Photo "JPEG, TIFF, BMP, GIF, PNG" NA
Playlist "M3U, PLS" NA
Model AT3705-MGW AT3705-DTV

Chapter 1 3
On-line media Live365 NA
Compliance "UPnP compliant, INMPR
compliant, DLNA"
NA
Operating system Linux NA
Networking (WLAN) 802.11b/g: 11/54Mbps NA
Networking (Fast Ethernet) 10/100Mbps NA
Model AT3705-MGW AT3705-DTV

Abbreviations / symbols
The main abbreviations used in this document are listed below with their meanings:
CCIR International Radio consultative committee
CVBS Composite Video Baseband Signal
dBm dB milliWatt
dBµV dB microVolt
DAR Display Aspect Ratio
DV Digital Video
DVI Digital Video Interface
ESD Electro Static Discharges
FP Front panel keypad
IC Integrated Circuit
IF Intermediate Frequency
IR Infra Red
KP Keypad
MN Menu
MTBF Mean Time Between Failure
OIRT International Radio and Television Organization
OSD On Screen Display
PLL Phase Locked Loop
PIP Picture-in-Picture
PAP Picture And Picture
RC RemoteControl
RF Radio Frequency
RGB Video Components : Red / Green / Blue
SCART 21 pins SCART plug
SWR Standing Wave Ratio
TBD To Be Defined
TV Television Set
VBI Vertical Blanking Interval
VCR Video Cassette Recorder