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 CHINA
Page 2
Revision History
Please refer to the table below for the updates of LCD TV AT2635 service guide.
Date Chapter Updates
2007/10/5 Chapter 1 ~ 3 1st edition
2007/10/8 Chapter 3 2nd edition
II
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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.
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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.
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Conventions
The following conventions are used in this manual.
SCREEN MESSAGES Denotes actual messages that appear on screen.
NOTE
WARNING
CAUTION
IMPORTANT
Gives bits and pieces of additional information related to
the current topic.
Alerts you to any damage that might result from doing
or not doing specific actions.
Gives precautionary measures to avoid possible
hardware or software problems.
Reminds you to do specific actions relevant to the
accomplishment of procedures.
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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.
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Chapter 1
System Specification
Specification
LCD Panel
Max. resolution: 1366 x 768
12 CCFTs Backlight system
Display area: 26 inches
Display color: 16.7 M colors
Input Signal: 1-ch LVDS
Contrast ratio: 800:1 ( Typical )
Brightness: 500 Cd/m² ( Typical )
Response Time: 6.5 ms ( Typical )
Viewing angle: 88° ( L ) / 88° ( R ), 88° ( U ) / 88° ( 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
15 pin D-Sub for VGA
19 pin D-Sub for HDMI
DIN45325 ( IEC169-2 ) Terminal for TV / CATV input
3.5 mm∮Earphone jack for Audio Line input (option )
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
Film mode 3:2 & 2:2 pull down
Screen display model Auto/4:3/16:9/Panorama/Letterbox1,2,3
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Mechanical
VESA mounting holes
Compatibility
Multi-Sound system
NICAM
FM Stereo ( A2 )
Power Source
Input voltage: 90 ~ 264 V, 47 ~ 63 Hz
Input current: 220Vac/0.87A
Power consumption: 190 Watts
Stand-by: 1 Watts Max.
Remote controllers
Multi-function remote controller
Speaker
Internal speaker: 5 W x 2stereo,volume adjustable
Others
On screen display adjustment function
ISP ( In System Programming ) function available for revising driver easily
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System Block & Wiring Diagram
OUTPUT
PANEL
INPUT
Bidirectional
1366x768
System Power
+12V
5VSB
VCC
TMDS
TMDS341A
3:1 MUX
HDMI
HDMI
Single LVDS
MT5371
Scale
R
L
MT8291
ADC & DAC
Audio IIS
TS
FB
ARD
SIFSIF
YPbPr-SCART
YPbPr-AV3
Y/C1
Y/C2
TV_CVBS
CVBS1
CVBS2
CVBS3
PC-RGB
AV3 Audio
DAC Audio R/L
PC Audio
BUFR
SCART-RGB Audio
SCART-YUV Audio
IO_SW2
SW
ARDx2
SW
IO_SW1
FBx2
RGB
YUV
TPA3100D2
Amplifier
AudioOUT
Video OUT
AudioOUT
MT5131
DEMON
FQD1216 MK5
Video OUT
SCART1-RGBSCART2-RGB
PHILIPS
TI
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Remote Control
Key Functions
Remote Function des cription
Remark (for
R/C for Europe Key Functions
Power Power On/Off
Display Display Channel and Input Source
Mute Mute On/Off
TV TV Turner
SCART SCART1/SCART2
cardreader)
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AV Composite/Component/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
Navigate down in the OSD or pevious (sub) page in teletext
down
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
mode
Enter Enter to confirm channel selection by number key
Channel UP Channel up
Channel Down Channel down
Volume key
STEREO Broadcast: Stereo/Mono
MPX
Volume up Volume up
Volume down Volume down
Teletext Teletext on/off
Index Go to index page (usually page 100)
Subpage Enter/Leave subpage mode
BILINGUAL Broadcast : Sound 1 / Sound 2
Reveal Display Hidden Information
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Temporarily holds the current teletext page if TEXT on
Hold Froze the picture if TEXT off
Zoom page toggle 1X/2X
Size
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
Page select by Up-arrow and Down-arrow
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Hardware Specification and Configuration
Electro/Optical
Model AT2635
Panel specificat ion
Resolution(pixels) 1366x768
Brightness(min.) 500 cd/m²
Contrast ratio(min.) 800:1(Typ.)
Display color 16.7 M
Viewing an gle 160(H)/160(V)
Response(typ.) 6.5ms
Power supply
Input 90-264 V, 47-63 Hz
Max. power Consumption 190W
Power saving 1W
Mechanical
Dimensions(WxHxD mm) 692.9*531.6*201
Weight(Kg) 4.5
Analog TV system
TV Color system DVB-T
TV Color system PAL.SECAM
Sound system B/G/D/K/I/L
Stereo system NICAM/ A2
Subtitle Teletext 1.5 (1000 pages)
Digital TV System
Digital TV standard DVB-T
ISO11172-3 layer1 & layer2 Sound system
32KHz,44.1KHz,48KHz
Stereo system MPEG ( Layer I & II ) Stereo 32 / 44.1 / 48KHz
Teletext Yes
Subtitle Yes
EPG 7days EPG
Frequency 7/8 MHz
Video format 16bit YUV
Resolution SD(576i/480i)
Terminal
RF 75Ω 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
Composite & Component RCA for YPbPr or Video and Audio R/L
HDMI1/HDMI2 HDMI connect for hdmi time and DVI mode
PC Analog Port D-Sub 15 pin VGA
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Service Port ISP through D-Sub
Audio system
Speaker 5 W x 2
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.
Preset mode Pixel Format Hor. Freq. (kHz)Hor. Polarity Vert. Freq. (Hz)Vertical Polarity Standard
1 720*400 31.47 - 70 + VGA
2 640*480 31.47 - 60 - VGA
3 640*480 32.861 - 72 - VESA
4 640*480 32.5 - 75 - VESA
5 640*480 43.4 - 85 - VESA
6 800*600 35.156 - 56 + VESA
7 800*600 32.879 + 60 + VESA
8 800*600 48.077 + 72 + VESA
9 800*600 46.875 + 75 + VESA
10 800*600 53.7 + 85 + VESA
11 1024*768 48.363 - 60 - VESA
12 1024*768 56.476 - 70 - VESA
13 1024*768 60.023 + 75 + VESA
14 1360*768 47.7 + 60 + VESA
This LCD TV shall have 10 or more user modes for user to creat own timing.
This LCD TV would detect the used mode automatically.
Power Saving
While VGA is selected to be input, this LCD TV is equipped with a power-management according to VESA
DPMS. There is a delay of 30 seconds before the transition from On-state to power saving state to avoid
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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 VGA CONNECTION “.
Transition from any power saving state to another can be instantaneous. The recovery from Off-state
requires no manual power on.
Mode Hsync Vsync Video Power Indication Recovery time
Power-On On On Active < 191W Green --
Off-state Off Off Off < 1W Red <10s
Power off × × × < 1W Red Turn on <10s
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 or Composite or Component inputs.
Performance Specifications
The performance shall be check at 25oC environment.
White Balance and U niformity
Set contrast and brightness at 50.
Adjustment Brightness min. 400 nits in all color temperatur.
The R, G, B gain could not exceed 512. (R, G, B could not saturation)
White Balance ( 255/255 ) Dark Balance ( 60/255 )
COLD x 0.268 (+/-0.005); y 0.273(+/-0.005) x 0.268 (+/-0.005); y 0.273(+/-0.005)
STANDARD x 0.280(+/-0.005; y 0.288(+/-0.005) x 0.280(+/-0.005; y 0.288(+/-0.005)
WARM x 0.295(+/-0.005); y 0.304(+/-0.005) x 0.295(+/-0.005); y 0.304(+/-0.005)
Inspection tolerance for FV2E as below: Brightness 400 nits
White Balance ( 255/255 ) Dark Balance ( 60/255 )
COLD x 0.268 (+/-0.005); y 0.273(+/-0.005) x 0.268 (+/-0.005); y 0.273(+/-0.005)
STANDARD x 0.280(+/-0.005; y 0.288(+/-0.005) x 0.280(+/-0.005; y 0.288(+/-0.005)
WARM x 0.295(+/-0.005); y 0.304(+/-0.005) x 0.295(+/-0.005); y 0.304(+/-0.005)
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Display Area, Phase, Cente r an d Tilt
Display Area: 32 inches diagonal
H-Phase: A-B Less than 1.5mm
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
E
F
C
A
B
D
Max. Brightness
The brightness should exceed 350Cd/m
temperature of Standard is selected. ( Typical value would be500Cd/m
2
while set both of contrast and brightness to max. and color
2
).
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.
Input Voltage and Frequency Ra nge
The operating range of line voltage shall be:
AC 90 volts to 264 volts, 47 Hz to 63 Hz
Power consumption shall be under 185 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
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Once hot plug occurs, at the very first time, the initial current should be limited at 2.3 amps or lower when
power offÆ on. Current will stay below 50m amps at AC 120 volts while power onÆoff, t hen ramp up t o full
power ( about 2.3 amps at AC 120 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 50m
amps at AC 120 volts 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
11 Chapter1
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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: 10 % to 90 % ( non-condensing )
Storage and Shipping
Storage temperature: -20°C to 60°C
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Shipping temperature: -20°C to 60°C
Storage humidity: 10 % to 90 % ( non-condensing )
Shipping humidity: 10 % to 90 % ( non-condensing )
Altitude
Uni t s test e d at a n al t i tu d e u p t o 1 2,00 0 feet m ust o perate at normal conditions without exhibiting abnormal
behavior such as arcing or shutdown.
Operating altitude: 0 to 12,000 feet
Shipping altitude: 0 to 40,000 feet
Storage altitude: 0 to 40,000 feet
Vibration Test
The packaged display shall be capable of passing sinusoidal vibration test as specified in follows.
1. Test condition as below:
a. Package sinusoidal vibration 7Hz, 1.05G acceleration, 20min/axe, 3axes
b. Random vibration, 10-500 Hz, 1.47G RMS
2. The unit under test shall be run for a duration of 30 minute in each of following orientations :
a. Top and bottom side ( z axis ).
b. Left and right side ( x axis ).
c. Front and rear side ( y 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
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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.
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.
VESA DDC
The VGA/HDMI inputs shall be capable of continuously transmitting its Extended Display Identification
( EDID ) information using Display Data Channel. It shall automatically switch to DDC2 mode if a DDC2
capable host is detected in accordance with the VESA DDC standard.
In addition, the display can respond to a request for EDID, to be transmitted using DDC2, level B commands.
If a DDC2 capable host is detected by the display, the display shall switch to DDC2 communication.
The EDID shall contain the manufacture name code QCI, product code, date of manufacture, and serial
number.
For complete EDID data structure, please refer to VESA Extended Display Identification Data Standard.
Hardware implementation may be either integrate into micro-controller or be a separate electrical
component. EDID memory must be protected against writing or other corruption through
customer-accessible electrical connection and required communication channels. Password protection, use
of an unpublished enable register, or use of direct electrical connection is acceptable levels of protection
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provided that the power-on Default State is that disabling writing. The serial number fields in the EDID must
contain a unique identifying numbers among units of the same model. EDID Table is defined as below:
For VGA input:
For HDMI input (Optional)
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Chapter 2
General Information
This chapter contains step-by-step procedures on how to disassemble the AT2635 series for
maintenance and troubleshooting. To disassemble the TV, you need the following tools:
Wrist grounding strap and conductive mat for preventing electrostatic discharge
Small Philips screwdriver
Philips screwdriver
Hexagonal screwdriver
Tweezers
Note:
The screws for the different components vary in size. During the disassembly process, please group
the screws with the corresponding components to avoid mismatch when doing assembly. When you
remove the boards, please be careful not to scrape them.
Warning!
The module is drived by high voltage. If you need to handle the module during operation or just after
powered off, you must take proper precautions against electric shock and must not touch the drive
circuit portion and metallic part of module within 10 minutes. The capacitors in the drive circuit portion
remain temporarily charged even after the unit is powered off. If the residual voltage is strong enough,
it could result in electric shock. Thus, we strongly suggest that you put on the wrist ground strap and
put the component on the conductive mat or bag. Besides, please keep the unit grounde d dur i n g the
whole process of disassembly and assembly.
Before You Begin
Before you proceed with the disassembly procedure, make sure that you do the following steps:
1 Turn off the power to the TV and all peripherals.
2 Unplug the AC adaptor and all power and signal cables from the TV.
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1. Release 2pcs screws and take off base.2. Release 8pcs screws from rear cover.
3. Release 7pcs screws from rear cover and take off it.
4. Release 8pcs screws from joint.
5. Release 3pcs screws from shielding.6. Release 7pcs screws from sheilding.
17 Chapter2
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7. Release 3pcs screws from Power/B and LVDs
,
p
p
cable and disconnect the cables.
8. Release 4pcs screws from Power/B and GND
then take off it.
cable
9. Release 7pcs screws from Main/B.
10. Release 2
take off it.
cs screws from GND cable and
11. Release 6pcs screws as above show.12. Release 4pcs screws from brackets.
13. Release 2pcs screws from bezel.
14. Release 8
off them.
cs screws from speakers and take
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15. Release 2pcs screws from IR/B.16. Release 3pcs screws from Button/B.
p
17. Release 5pcs screws from GND cables.
18. Release 5
bezel.
19. Release 4pcs screws from right brackets and take off them.
cs screws from panel and take off
20. Release 4pcs screws from left brackets and take off them.
19 Chapter2
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21. Disconnect all cables.
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Chapter 3
FRU (Field Replaceable Unit) List
This section gives you the FRU (Field Replaceable Unit) list in global configurations of AT2635 series. Please
refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization).
Please note that WHEN ORDERING FRU PARTS, you should check the most up-to-date information available
on your regional web or channel. For whatever reasons a part number change is made, it will NOT be noted
on the service guide. For Acer authorized service providers, your Acer office may have a different part
number code from those given in the FRU list of this printed service guide. You MUST use the local FRU list
provided by your regional Acer office to order FRU parts for repair and service of customer machines.
Note: To scrap or to return the defective parts, you should follow the local government ordinance or
regulations on how to dispose it properly, or follow the rules set by your regional Acer office on how to
return it.
21 Chapter3
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PARTS
PART NAME DESCRIPTION TVE PART NO. ACER PART NO.
Accessory
REMOTE REMOTE CONTROL EURT54B009 GP DQ754B00901 25.M6707.001
BATTERY BATTERY LR03GW/2SK (ALKALINE 1.5V) GP AHDALR03006 23.M480E.002
BOARD
MAIN/B FV2E M/B ASSY(EU)(FOR FV6E)AUO GP 21FV2EMB021 55.M6707.001
IO/B FV2E IO/B ASSY GP 23FV2EIB009 55.M6707.002
IR/B IV2E IR/B ASSY GP 23IV2EIB012 55.M6707.003
KEYPAD/B IV2 KEYPAD/B ASSY GP 23IV2EKB001 55.M6707.004
POWER/B PWR 161W,DPS-161AP-2 A(90~264VAC) GP AF161B00000 55.M5307.001
Cable
CABLE LVDS CABLE LVDS(50P/30P,225MM) IV6E(AUO)V2 GP DDIV6ELC024 50.M6707.002
CABLE INVERTER CABLE INV(14P/4P/6P,320MM) AUO V2 GP DDIV6EIV003 50.M6707.001
CABLE MB-PWR CABLE MB-PWR(10P,110MM,R3A)VA1 GP DD0VA1PB013 50.M01V7.004
CABLE KEY-IR CABLE KEY-IR(10P/9P/8P,670MM)IV6E GP DDIV6EMX003 50.M6707.003
CABLE ASSY CABLE ASSY HV9 GND(1P/1P,2A) GP DD0HV9TH108 50.M26V7.004
CABLE SPEAKER CABLE SPEAKER(4P/3P+2P,R1A)HX6A GP DDHX6ASP009 50.M5307.003
PWR CORD PWR CORD B 1.8M SP-027/10A SWI GP DM333181J29 27.M11V7.001
Case/Cover/Bracket/Assembly
LCD BEZEL ASSY FV6E FRONT BEZEL ASSY GP 32FV6EFB006 60.M6707.002
REAR COVER JL9J REAR-COVER ASSY GP 37JL9RCSA01 60.M26V7.002
STAND ASSY IV6E STAND ASSY GP 26IV6ESA000 60.M6707.001
STAND BASE STAND BASE IV6E(EAIV6E02,REV3A)GP EAIV6E02016
PANEL BKT TOP PANEL BKT TOP HX6(FAHX6003,REV3C) GP FAHX6003013 33.M26V7.001
PANEL BKT DOWN PANEL BKT DOWN HX6(FAHX6004,REV3D) GP FAHX6004010 33.M5307.001
SUPPORT BKT SUPPORT BKT HX6(FAHX6005,REV3A) GP FAHX6005016 33.M26V7.003
PANEL BRACKET PANEL BRACKET H26(FBH26001,REV3A) GP FBH26001019 33.M11V7.006