Acer AT3720A Support Question
Acer AT3720A Support Question
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AT3720A Service Guide - Page 1
Acer AT3720A/3720B/3720 LCD TV
Service Guide
Service guide files and updates are available on the ACER/CSD web; for more information,
please refer to http://csd.acer.com.tw
PRINTED IN TAIWAN
AT3720A Service Guide - Page 2
Revision History
Please refer to the table below for the updates made on Acer LCD TV AT3720A/3720B/3720 service guide. Date
Chapter
Updates
II
AT3720A Service Guide - Page 4
... and pieces of procedures.
IV Alerts you to do specific actions relevant to the accomplishment of additional information related to any damage that appear on screen.
Gives precautionary measures to avoid possible hardware or software problems.
Reminds you to the current topic. Conventions
The following conventions are used in this manual...
AT3720A Service Guide - Page 7
...jack for audio line input
Video Functions T Support PAL/NTSC/SECAM video format (for AT3720A) T Support 480i/576i, 480p/576p, 1080i and 720p format T Build in Dynamic... LCD TV was designed with the user in Dynamic motion and edge adaptive De-interlacing T Film mode 3:2 and 2:2 pull down T Screen display model 16:9 / 4:3 / panorama / zoon / PIP /POP
Mechanical T Dimensions (W x H x D mm): 944 x...
AT3720A Service Guide - Page 11
Volume up : When the OSD is on , functions the same as the Right arrow.
AT3720A/AT3720B/AT3720 Front panle view
The panel view below is for AT3720A/AT3720B/AT3720.
1 2 3
4 5
#
Item
Description
1
Power On/Off
Power on or off the LCD TV.
2
Menu key
Turn s the OSD menu On and OFF.
3
Channel up/...
AT3720A Service Guide - Page 15
AT3720A Remote controller
General Keys
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 19 20 21
No. 1 2 3 4
5
Item POWER DISPLAY MUTE Input buttons (TV/AV/ ...
AT3720A Service Guide - Page 18
Press to 2X. Teletext
1
2
7
34 56
No. 1 2 3 4 5 6 7
Item Colour buttons (R/G/Y/B) INDEX SIZE SUBTITLE SUBPAGE HOLD REVEAL
Description Operates corresponding button on the screen. Press once to zoom teletext page to reveal hidden teletext information.
12
Chapter 1 Press to the index page. Press to go to pause the current ...
AT3720A Service Guide - Page 20
... page to sequentially select the TV channel.
1
2
7
34 56
No. 1 2 3 4 5 6 7
Item Colour buttons (R/G/Y/B) INDEX SIZE SUBTITLE SUBPAGE HOLD REVEAL
Description Operates corresponding button on the screen. Press again to reveal hidden teletext information.
14
Chapter 1 Press to resume. Press to go to access the teletext's subpages directly. Press to the index...
AT3720A Service Guide - Page 21
Connect the male plug to the wall outlet as shown. Connect the AC cord into the AC input on the back of the set. 2. For AT3720A:
For AT3720B:
For AT3720:
Chapter 1
15 Basic connection
Connecting the power cord
1.
AT3720A Service Guide - Page 23
... time you will also change the channel. The channel changes after 2 seconds.
Pressing the channel (CH) up / down button on the power switch beneath the screen.
Turn on the remote control will be given a choice of options: 1. Press 0-9 on the remote control. Adjusting the volume Adjust the volume level using the...
AT3720A Service Guide - Page 24
For AT3720A:
Source-IN
Y Yellow R Red W White Blue Green S S-video
NOTE: Acer recommends the following priority for connection types: HDMI -> DVI ->D-Sub ->COMPONENT > S-Video -> Composite.
18
Chapter 1 ...
AT3720A Service Guide - Page 27
For AT3720B:
Chapter 1
21 For AT3720A:
NOTE: For VGA and DVI input, Acer recommends setting your PC or notebook computer to 1360 x 768 pixel @ 60 Hz.
Connecting a PC or notebook computer
To display PC output on your TV, connect your PC's external monitor resolution to the TV as shown below.
AT3720A Service Guide - Page 29
... input sources. Chapter 1
23 Toggle AV1, AV2, AV3-CVBS* and HDMI between input sources.
Toggle AV1, AV2, AV3-CVBS* and HDMI between input sources. For AT3720A/AT3720B:
TV
AV COMPONENT PC
1
2
3
4
No 1 2 3
Item TV key AV key COMPONENT key
4
PC key
For AT3720:
Input Button Guide Toggle Analog TV (ATV) between...
AT3720A Service Guide - Page 35
... directional pad to interact with these menus using the front panel controls. Press the "Menu" button on the remote control or the "Menu" button on screen display) menus, as brightness, contrast, etc). The Up/Down directions will scroll through using the OSD (on the control panel.
2. Use the following method to...
AT3720A Service Guide - Page 36
... below. Press to pause the current teletext page in multi-page viewing mode. subtitle Press to reveal hidden teletext information. The teletext buttons on the screen Press to switch from TV/AV to overlay teletext page on the teletext page.
30
Chapter 1 Press once to zoom teletext page to resume. Teletext...
AT3720A Service Guide - Page 37
...PIP
PIP
PIP
PIP
PIP
1a. Chapter 1
31 PBP
PBP (Picture-by -picture (PBP). Then, the POP screens will display the TV
Channel programs on -picture (POP). Press the SIZE/MODE key to select the size of the... and the subscreen.
3. Press the POSITION key to select the location of the active screen.
2. Press the TV, AV, COMPONENT or PC keys, number keys or CH up or down to change...
AT3720A Service Guide - Page 55
... re-create the failure by running the diagnostic
test or by attempting to be replaced.
in as much detail as a guide for Acer LCD TV AT3720A/AT3720B and AT3720 problems. NOTE: The diagnostic tests are no obvious shorts or opens; there are intended to test this chapter's instructions. Chapter 3
Troubleshooting
Use...
AT3720A Service Guide - Page 56
no
LCD Panel
no
Check M/B
all cable
Replacement M/B Replacement Panel
Replacement Cable
Replacement M/B
50
Chapter 4
AT3720A Troubleshooting Guideline
1. LED Bright? NG
Replacement Remote control or IR board or Keypad board
Check panel's
no
can Display ? Can not power on
A
Power code ...
AT3720A Service Guide - Page 71
... chapter gives you should follow the rules set by your Acer office may have a DIFFERENT part number code from those given in global configurations of AT3720A/AT3720B/ AT3720. NOTE: To scrap or to return the defective parts, you should check the most up-to-date information available on your regional web...
AT3720A Service Guide - Page 72
We will add the FRU list as soon as the service guide released. AT3720A Exploded Diagram
AT3720A/AT3720B/AT3720 FRU List is not ready as possible.
66
Chapter 4
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