Acer AT2621/22 User manual

Acer AT2621/22 LCD TV
ServiceGuide
PRINTED IN CHINA
Service guide files and updates are available on
the ACER/CSD web. For more information,
please refer to http://csd.acer.com.tw

Revision History
Pleaserefer tothe table below for the updates ofLCD TV AT2621/22 serviceguide.
Date Chapter Updates
2007/10/10 Chapter 1 ~ 3 1st edition
II

Copyright
Copyright®2006 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.
III

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 Incorporated.
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, you should check the most up-to-date information available
on your regional web or channel. For whatever reason, if 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.
VI

Chapter 1
System Specification
Specification
LCD Panel
Max. resolution: 1366 x 768
6 CCFTs Backlight system
Display area: 575.769 (H) x 323.712 (V)
Display color: 16.7 M colors
Input Signal: 1-ch LVDS
Contrast ratio: 800:1 ( Typical )
Brightness: 500 Cd/m² ( Typical )
Response Time: 8 ms ( Gray to Gray )
Viewing angle: 80° ( L ) / 80° ( R ), 80° ( U ) / 80° ( D )
I/O functions
21 pin Euro-SCART ( RGB ) for Video, S-Video, R.G.B. and Audio
21 pin Euro-SCART ( RGB ) for Video, S-Video, R G B and Audio
RCA jack ( YUV and CVBS ) for YPbPr, YCbCr, Video and Audio
RCA jack ( R and L) for Audio Line Out (the output will change according to user’s selection)
15 pin D-Sub for VGA
19 pin HDMI connector * 2
DIN45325 ( IEC169-2 ) Terminal for TV / CATV input
3.5 mm∮Earphone jack for PC Audio Line input
Video Functions
Support PAL / NTSC / SECAM video format
Support 480i/576i, 480p/576p, 1080i and 720p format
Build in Teletext functions
Build in Dynamic adaptive smoothing filter
Build in Dynamic temporal frame-filtering Noise Reduction
Build in Dynamic motion and edge adaptive De-interlacing
1Chapter1

Film mode 3:2 & 2:2 pull down
Screen display model: Auto / 4:3 / 16:9 / panorama / Letterbox 1,2,3
Mechanical
VESA mounting holes
Compatibility
Multi-Sound system
NICAM
FM Stereo ( A2 )
Power Source
Input voltage: AC: 90 ~ 264 V, 47 ~ 63 Hz
Input current: 1A (AC 220V)
Power consumption: 161 Watts
Stand-by: 2 Watts Max.
Remote controllers
Multi-function remote controller
Speaker
Internal speaker: 5 W x 2 stereo
Others
On screen display adjustment function
ISP ( In System Programming ) function available for revising driver easily
Chapter12

System Block & Wiring Diagram
I/O Board
Scart RGB
Scart RGB
Tuner
SPEAKER-L
IR & power button B
d
Key Board
SPEAKER-R
INVERTE
R
PANEL
Board
POWER
M
AIN Board
Line Out
3Chapter1

LCD Main Board Block Diagram
Chapter14

Remote Control
Key Functions
Remote Function description
R/C for Europe Key Functions Remark (for cardreader)
Power Power On/Off
Display Display Channel and Input Source
5Chapter1

Mute Mute On/Off
TV TV Turner
SCART SCART1/SCART2
AV AV3/HDMI1/HDMI2
PC VGA
Sleep Sleep Timeer Off 15/30/45/60/90/120
Wide Scaling Mode ( 4:3 /16:9 /Panorama /Letterbox )
Menu Open Menu or leave Menu
Four way direction key
up
Navigate up in the OSD or next (sub)page in
teletext mode
down
Navigate down in the OSD or pevious (sub) page in
teletext mode
left Navigate left in the OSD
right Navigate right in the OSD
OK Selection Confirm
Channel key
1 Number key 1
2 Number key 2
3 Number key 3
4 Number key 4
5 Number key 5
6 Number key 6
7 Number key 7
8 Number key 8
9 Number key 9
0 Number key 0
Recall Return to previous channel
Enter Enter to confirm channel selection by number key
Channel UP Channel up
Channel Down Channel down
Volume key
NICAM
STEREO Broadcast : Stereo/Mono
BILIGUAL Broadcast : Sound 1 / Sound 2
MONAURAL Broadcast: Mono
FM-FM
STEREO Broadcast: Stereo/Mono
MPX BILINGUAL Broadcast : Sound 1 / Sound 2
Volume up Volume up
Chapter16

Volume down Volume down
Teletext Teletext on/off
Index Go to index page (usually page 100)
Subpage Enter/Leave subpage mode
Reveal Display Hidden Information
Temporarily holds the current teletext page if TEXT
on
Hold Froze the picture if TEXT off
Zoom page toggle 1X/2X
Size Page select by Up-arrow and Down-arrow
Teletext Turn teletext mode on/off
Subtitle Show subtitle on the screen
R Colour button to operate the teletext
G Colour button to operate the teletext
Y Colour button to operate the teletext
C Colour button to operate the teletext
7Chapter1

Hardware Specification and Configuration
Electro/Optical
Model AT2621/22
Panel specification
Resolution(pixels) 1366x768
Brightness(min.) 500 cd/m²
Contrast ratio(min.) 800:1(Typ.)
Display color 16.7 M
Viewing angle 160(H)/160(V)
Response(typ.) 8ms
Power supply
Input 90-264 V, 47-63 Hz
Max. power Consumption 161W
Power saving 2W
Mechanical
Dimensions(WxHxD mm) 692.9*531.6*201
Weight(Kg) 4.5
TV system
Destination PAL / SECAM
Color System CCIR B/G, D/K, I and L/L’
Sound System Sound 1 and Sound 2
Stereo System NICAM and FM Stereo ( A2 )
Channel System Full frequency range from 48.25 MHz to 863.25 MHz
Terminal
RF DIN45325 ( IEC169-2 ) Type
SCART 1 Euro-SCART ( RGB ) for Video, S-Video, RGB and Audio
SCART 2 Euro-SCART ( RGB ) for Video, S-Video, RGB and Audio
AV RCA for YPbPr or CVBS and Audio R/L
Line Out Audio R/L Output
HDMI1/HDMI2 HDMI connect for HDMI and DVI mode
PC Analog Port D-Sub 15 pin VGA
3.5 mm∮Earphone jack PC Audio Line input
Service Port ISP through D-Sub
Audio system
Speaker 5 W x 2
Chapter18

Firmware Specifications
Preset Mode for VGA Input
16 factory pre-set modes for VGA inputs are saved during the manufacturing process.
Please press "Volume-" + "Channel+" + "POWER" to enter the LCD TV factory mode.
This LCD TV would detect the used mode automatically.
9Chapter1

Power Saving
While VGA is selected to be input, this LCD TV is equipped with a power-management. There is a delay of
8 seconds before the transition from On-state to power saving state to avoid unintentionally entering of a
power saving state during display resolution and timing mode changes. During the period of delay, the LED
shall indicate green color and OSD will show “ NO SIGNAL “. Transition from any power saving state to
another can be instantaneous. The recovery from Off-state requires no manual power on.
Mode Signal Power Indication Recovery time
Power-On On < 190W Green --
Stand-by Off < 3W Red <5s
Power off × < 3W Red Turn on > 6s
Sync on means: normal operation
Sync off means: Hsync: f < 1 KHz, duty cycle > 25 %, Vsync: f < 10 Hz, duty cycle > 25 %
The power-consumption is valid over the specified voltage and frequency range.
Power comsuption is measured from AC source.
There are no power saving modes for TV, SCART1/2 or HDMI1/2 inputs.
Performance Specifications
The performance shall be check at 25oC environment.
White Balance and Uniformity
Set contrast and brightness at 50.
Set backlight at 80.
Please use HDMI 720P for white balance adjustment.
Chapter110

Display Area, Phase, Center and Tilt
Display Area: 26 inches diagonal
H-Phase: A-B Lessthan1.5mm
V-Center: C- D Less than 1.5mm
Tilt: E-F Less than 1.5mm, but non-active area must be larger than zero for four sides
A
E
D
CF
B
Max. Brightness
The brightness should exceed 350 Cd/m2 while set both of contrast and brightness to max. and color
temperature of Standard is selected. ( Typical value would be 500 Cd/m2 ).
Power Supply Electrical Specifications
The power supply for this product is an internal converter, with a non-replaceable fuse internally.
This converter shall be well designed to meet CE mark requirement.
11Chapter1

Input Voltage and Frequency Range
The operating range of line voltage shall be:
AC 90 volts to 264 volts, 47 Hz to 63 Hz
Power comsuption shall be under 190 Watts
Variation of the line voltage throughout the applicable operating range shall not result in any visible image
anomalies such as image movement, changes in light output, nor changes in image stability or quality.
Line Fuse
The AC input shall be fused and become electrically open as a result of an unsafe current condition. This
fuse is inside the power supply converter and is not user replaceable, and must be returned for
replacement.
This fuse shall be well selected to handle inrush current for all combinations of line voltage and frequency.
Hot plug and power on/off sequence
Once hot plug occurs, at the very first time, the initial current should be limited at 0.87 amps or lower when
power off. Current will stay below 100 m amps while power on, then ramp up to full power ( about 0.87
amps at AC 220 volts ) within 5 seconds when power-up signal is triggered. For the shut down sequence,
the current will stay at full power for about 150 m seconds or less, then ramp down to 100 m amps within
1 second.
Power on LED Location and Type
Power on indicator shall be easily visible from the front of the display.
Inverter
The inverter which is used to light up back-light of LCD panel shall be well designed to meet requirement of
panel’s specification.
Overall Dimensions
Height: 531.6 mm
Width: 692.9 mm
Depth: 201 mm
Chapter112

Environmental Requirements
This display shall meet the following environmental requirements under normal operating conditions.
Operating
25° ± 5° for Purity, White Point, Mis-convergence, Luminance measurements and White uniformity
measurement
Operating temperature: 0°C to 35°C
Operating humidity: 20 % to 80 % ( non-condensing )
Storage and Shipping
Storage temperature: -20°C to 60°C
Shipping temperature: -20°C to 60°C
13Chapter1

Storage humidity: 20 % to 80 % ( non-condensing )
Shipping humidity: 20 % to 80 % ( non-condensing )
Vibration Test
The packaged display shall be capable of passing sinusoidal vibration test as specified in follows.
Test condition as below :
1) Package sinusoidal vibration 7Hz, 1.05G acceleration, 20min/axe, 3axes
2) Random vibration,10-500 Hz, 1.47G RMS
The unit under test shall be run for a duration of 30 minute in :
Top and bottom side ( z axis ).
The unit shall suffer no visible cosmetic damage and should operate no degradation indisplay quality after
test.
Additionally, prior to production and prior to implementation of any design or manufacturing change that
might affect vibration performance, a minimum of 2 units shall be demonstrated to meet the requirements
of specification.
Drop Test
The packaged display shall be capable of passing drop test as specified in following specification without any
measurable degradation in performance or detectable mechanical or cosmetic damage.
Dropping way: 1 corner, 3 edges, 6 flats
Dropping Height: follow the below table
Chapter114