Acer at3730b Service Manual

Acer AT3730B 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 CHINA

Revision History

Please refer to the table below for the updates of LCD TV AT3730B service guide.

Date Chapter Updates

2007/7/27 Chapter 1 ~ 4 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

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.

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

18 CCFTs Backlight system

Display area: 37 inches

Display color: 16.7 M colors

Input Signal: 1-ch LVDS

Contrast ratio: 1200:1 (Typical)

Brightness: 500 Cd/m² (Typical)

Response Time: 8 ms

Viewing angle: 88° ( L ) / 88° ( R ), 88° ( U ) / 88° ( D )

I/O functions

RCA jack (YUV and CVBS) for YPbPr, YCbCr, Video and Audio

4 pin S-DIN for S-Video

15 pin D-Sub for VGA

19 pin HDMI connector

DIN45325 (IEC169-2) Terminal for TV / CATV input

DIN45325 (IEC169-2) Terminal for DVB-T input

3.5 mm∮Earphone jack for 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

Film mode 3:2 & 2:2 pull down

Screen display model 16:9 / 4:3 / panorama / Letterbox1/ Letterbox2/ Letterbox3

1 Chapter1

Mechanical

VESA mounting holes

Compatibility

Multi-Sound system

NICAM

FM Stereo (A2)

Power Source

Input voltage: 90 ~ 264 V, 47 ~ 63 Hz

Power consumption: 235 Watts

Stand-by: 5 Watts Max.

Remote controllers

Multi-function remote controller

Speaker

Internal speaker: 10 W x 2

Amplifier: 8 W x 2 stereo, volume adjustable

Others

On screen display adjustment function

ISP (In System Programming) function available for revising driver easily

Chapter1 2

System Block & Wiring Diagram

3 Chapter1

LCD Main Board Block Diagram

Chapter1 4

Remote Control

Key Functions

Remote Function des cription

R/C for Australia Key Functions Remark (for cardreader)
Power Power On/Off
Display Display Channel and Input Source
Mute Mute On/Off
TV Analogue TV / Digital TV
Component Component1/Component2
AV AV1/AV2/AV3/HDMI1/HDMI2
PC VGA
Sleep Sleep Timeer Off 15/30/45/60/90/120

5 Chapter1

Wide Scaling Mode ( 4:3 /16: 9 /Panorama /Letterbox )
Menu Open Menu or leave Menu

In digital TV mode, press the key to launch EPG main

EPG

CH List
Four way direction key

up

down

left

page
Enable in Digital TV mode only.

1. In Digital TV mode, Press the key to launch ch list
main page.

2. In Non Digital TV source, Press this key will show
“This function is only use in DTV source message”

Navigate up in the OSD,
ATV: next page or sub page in teletext mode
DTV: next page in teletext mode
Navigate down in the OSD,
ATV: previous page or sub page in teletext mode
DTV: previous page in teletext mode
Navigate left in the OSD,
DTV: previous sub page in teletext mode

Navigate right in the OSD,
right
OK Selection Confirm
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

DTV: next sub page in teletext mode

MPX

NICAM

STEREO Broadcast : Stereo/Mono

BILIGUAL Broadcast : Sound 1 / Sound 2

MONAURAL Broadcast: Mono

FM-FM

STEREO Broadcast: Stereo/Mono

BILINGUAL Broadcast : Sound 1 / Sound 2

Chapter1 6

DTV multi-audio selection

g

Volume up Volume up
Volume down Volume down
Teletext/Mix Teletext on -> Mixed mode on ->Teletext off
Index Go to index page (usually page 100) in teletext mode

ATV: Enter/Leave subpage mode

DTV: Simulated as Right key operation to change sub
Subpage
Reveal Display Hidden Information

Hold

Size
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

page in teletext mode.

1.When in teletext pages, press this button temporarily

holds the current teletext page

2.When in the TV Mode, pressing Hold key do freeze

function on active video

When in teletext pa

and page selection by Up-arrow and Down-arrow

HDMI1/HDMI2

Select Scan mode Auto -> Underscan -> Overscan

es, this key Zoom page toggle 1X/2X

Functionalities of color keys
vary in different
screens/modes, which could
be for navigation or special
function, subject to be

C Colour button to operate the teletext

specified on individual screen

7Chapter1

Hardware Specification and Configuration

Electro/Optical

Model AT3730B
Panel specificat ion
Resolution(pixels) 1366x768
Brightness(min.) 500 cd/m²
Contrast ratio(min.) 1200:1(Typ.)
Display color 16.7 M
Viewing an gle 176(H)/176(V)
Response(typ.) 8ms
Power supply
Input 90-264 V, 47-63 Hz
Max. power Consumption 135W
Power saving 5W
Mechanical
Dimensions(WxHxD mm) 877*514.6*54.7
Weight(Kg) 10.3
Analog TV system
TV color system PAL/SECAM
Sound system Sound 1 and Sound 2
Stereo system NICAM and FM Stereo (A2)
Analog TV-tuner Quantity 1
Terminal
RF 75Ω DIN45325 ( IEC169-2 ) Type
RF (DVB-T) 75Ω DIN45325 ( IEC169-2 ) Type
AV 1 RCA Jack for CVBS, S-Video and Audio

AV 2 RCA Jack for CVBS, S-Video and Audio
AV 3 RCA for YPbPr or CVBS and Audio R/L

Component 1 RCA Jack for YUV and Audio
Component 2 RCA Jack for YUV and Audio
PC Analog Port D-Sub 15 pin VGA
PC Stereo input

3.5 mm∮Earphone Jack

HDMI1 19 pins HDMI single link
HDMI2 19 pins HDMI single link
Service Port ISP through D-Sub
Audio system
Speaker 10 W x 2

Chapter1 8

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 37.861 - 72 - VESA
4 640*480 37.5 - 75 - VESA
5 640*480 43.4 - 85 - VESA
6 800*600 35.156 - 56 + VESA
7 800*600 37.879 + 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 68.7 + 85 + VESA
15 832*624 49.7 - 75 - MAC
16 1024*768 60.2 - 75 - MAC

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.

Preset Mode for HDMI Input

16 factory pre-set modes for DVI inputs are saved during the manufacturing process.

Preset mode Pixel Format Hor. Freq. (kHz) Hor. Polarity Vert. Freq. (Hz) Vertical Polarity Standard

1 640*480 60 31 - 60 - VGA

2 640*480 72 37 - 72 - VESA

3 640*480 75 37 - 75 - VESA

4 640*480 85 43 - 85 - VESA

5 800*600 56 35 + 56 + VESA

6 800*600 60 37 + 60 + VESA

7 800*600 72 48 + 72 + VESA

8 800*600 75 46 + 75 + VESA

9 800*600 85 53 + 85 + VESA

9 Chapter1

10 1024*768 60 48 - 60 - VESA
11 1024*768 70 56 - 70 - VESA
12 1024*768 75 60 - 75 - VESA
13 1024*768 85 68 + 85 + VESA
14 1280x768 60 48 - 60 + VESA
15 1360x768 60 48 + 60 + VESA
16 1280x720/50 40 50
17 1280x720/60 45 60
18 576P/50 31 50
19 1920x1080i/50 28 50
20 1920x1080i/60 34 60

This LCD TV shall have 10 or more user modes for user to creat own timing.

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

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 < 235W Green --

Stand-by Off On Off < 5W Red <5s

Suspend On Off Off < 5W Red <5s

Off-state Off Off Off < 5W Red <5s

Power off × × × < 5W Dark Turn on < 5s

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, AV1, AV2 or AV3, compoment 1/2 and HDMI 1/2 inputs.

Chapter1 10

Performance Specifications

The performance shall be check at 25oC environment.

White Balance and U niformity

Set contrast and brightness Contrast=50 Brightness=50.

Inspection tolerance for 76PA as below: Brightness 325~425 nits

Cold:14000 degree K(x=0.266,y=0.270)±0.015, on x and y value.

Standard:9300 degree K(x=0.285,y=0.293) ±0.015, on x and y value.

Warm: 6500 degree K(x=0.314,y=0.324) ±0.015, on x and y value.

Display Area, Phase, Cente r an d Tilt

Display Area: 37 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 400 Cd/m

temperature of Standard is selected. ( Typical value would be 500 Cd/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 100 volts to 240 volts, 50 Hz to 60 Hz. Power comsuption

shall be under 291 Watts. Variation of the line voltage throughout the applicable operating range shall not

11 Chapter1

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 2.3 amps or lower when

power off. Current will stay below 100 m amps while power on, then ramp up to 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 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: 692 mm

Width: 944 mm

Depth: 261 mm

Chapter1 12

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

Shipping temperature: -20°C to 60°C

Storage humidity: 10 % to 90 % ( non-condensing )

Shipping humidity: 10 % to 90 % ( non-condensing )

13 Chapter1

Altitude

Uni t s test e d at a n alt i tude u p to 1 2 ,000 f eet m u st op erate 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.

A. Test condition as below :

B. 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

might affect vibration performance, an minimum of 2 units shall be demonstrated to meet the requirements

of specification.

Chapter1 14

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.

Filter: 330 Hz

Dropping way: 1 corner, 3 edges, 6 flats

Dropping Height: follow the below table

Weight(kg) Corner, edge, F, R, Btm(cm) L, R, Up side(cm)

0~9 76 76

9~17 61 61

18~27 46 46

27~45 31 20

45~100 25 15

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

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:

15 Chapter1

Product
Revision

0 1 2 3 4 5 6 7 8 9 A B C D E F

0 0 FF FF FF FF FF FF 0 4 72 2 32 0 0 0 0

1 2D DF 1 3 68 46 28 78 E8 DC 10 A2 58 45 9C 25

2 13 49 4B AF EE 0 31 40 45 40 61 40 0 0 0 0

3 0 0 0 0 0 0 69 21 50 B0 51 0 1B 30 40 70

4 36 0 2 90 31 0 0 1E 0 0 0 FD 0 32 55 1E

5 50 8 0 0A 20 20 20 20 20 20 0 0 0 FF 0 30

6 30 30 30 30 0A 20 20 20 20 20 20 20 0 0 0 FC

7 0 61 63 65 72 20 41 54 33 32 30 32 0A 20 0 5A

For HDMI input (Optional)

Product
Revision

0 1 2 3 4 5 6 7 8 9 A B C D E F

0 0 FF FF FF FF FF FF 0 4 72 4 27 1 1 1 1

1 0 0F 1 3 80 3C 22 78 2A 3B 90 A7 54 46 98 24

2 10 49 4B 20 0 0 1 1 1 1 1 1 1 1 1 1

3 1 1 1 1 1 1 1 1D 80 18 71 1C 16 20 58 2C

4 25 0 C4 8E 21 0 0 9E 0 0 0 FD 0 32 55 1E

5 50 0B 0 0A 20 20 20 20 20 20 0 0 0 FF 0 31

6 32 33 34 0A 20 20 20 20 20 20 20 20 0 0 0 FC

7 0 41 63 65 72 20 41 54 32 37 30 34 0A 20 1 41

Chapter1 16

Chapter 2

General Information

This chapter contains step-by-step procedures on how to disassemble the AT3730B 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.

17 Chapter2

p

f

1. Remove 6

p

cs screws from base take off it.

2. Remove 8pcs screws from top of
rear cover.

3. Remove 5
rear cover and 2pcs screws from
middle of rear cover and take off it.

cs screws from bottom o

4. Remove 2pcs screw IO NUT from VGA joint and 7pcs screws from IO/B joint.

5. Remove 3pcs screws from clamp of B/B and 2pcs screws from HDMI joint.

Chapter2 18

6. Remove 6pcs screws from top o

f

p

f

p

p

p

B

shielding.

7. Remove 8
shielding and take off it.

cs screws from bottom o

8. Remove 8pcs screws from speaker. 9. Remove 2pcs screws from IR/B.

10. Remove 3
and 2

cs screws from TUNER/B

cs screws from CPU/B.

11. Remove 3

cs IO NUT from IO/

and 2pcs IO NUT from CPU/B.

19 Chapter2

12. Remove 1pcs screw from P/B and

p

f

p

p

p

1pcs screw from M/B, then remove
3

cs screws from bracket and take of

13. Remove 5pcs screws from P/B and
3pcs screws from M/B, then take off
them.

14. Remove 3

cs screws from P/B and

take off it.

16. Remove 10pcs screws from panel.

15. Remove 3pcs screws from B/B,
and take off it.

17. Remove 10

cs screws between

anel and bezel.

Chapter2 20

18. Remove 5pcs screws from panel

/

p

,

bracket.

19. Remove 5pcs screws from panel
bracket and GND cable of B

B.

20. Remove 6
bracket.

cs screws from panel

21. Remove 6pcs screws from panel
bracket

and take off it.

21 Chapter2

Chapter 3

Troubleshooting

Use the following procedure as a guide for Acer LCD TV AT3730B series problems.

Note: The diagnostic tests are intended to test this model. Non-Acer products, prototype cards, or

modified options could occur false errors and invalid system responses.

1. Duplicate symptom and obtain the failing symptoms in as much detail as possible.

2. Distinguish symptom. Verify the symptoms by attempting to re-create the failure by running the

diagnostic test or by repeating the same operation.

3. Disassemble and assemble the unit without any power sources.

4. If any problem occurs, you can perform visual inspection before you follow this chapter’s instructions.

You can check the following:

Power cords are properly connected and secured;

ٛ

There are no obvious shorts or opens;

ٛ

There are no obviously burned or heated components;

ٛ

All components appear normal.

ٛ

5. Use the following flow chart determine which part to be replaced.

Chapter3 22

Problem List 1

Power

No

On

Yes

LCD

No Back Light

Remote

no function

B

C

A

Next

Page

Button Key

no function

RF no Display

Component 1,2

no Display

AV1,AV2

no Display

Speaker

no Sound

D

E

F

G

H

Chapter3

23

Problem List 2

Front

Page

VGA no Display

I

HDMI no Display

J

HDMI no Sound

K

VGA/DVI no sound

L

Component

no Sound

M

AV1/S-V

no Sound

N

24

Capter3

Can not power ON

A

Power code

plug in?

LED Bright?

LED Bright

Green Color?

LCD panel

can display?

no

no

no

no

Check Power code

Replace P/B or M/B

or IO/B or all cable

Check R.C
and keypad

NG

Replace R.C or

IR/B or keypad/B

Check panel’s

all cable

/

OK

no

Check M/B

Replace M/B

Replace panel

END

Chapter3

Replace cable

25

Replace M/B

LCD No Back Light

B

I/V power cable

had plug in?

LCD panel

backlight bright?

no

no

Change I/V
power cable

Replace P/B

LCD panel

backlight bright?

no

Replace

LCD panel I/V

LCD panel

backlight bright?

no

26

END

Replace M/B

Capter3

Remote no function

C

Remote control

Have battery?

IR/B cable plug in?

Press remote manual key

OSD can display?

no

no

no

Change battery

Check IR/B or

Replace IR/B cable

Replace IR/B

Press remote manual key

OSD can display?

no

Replace M/B

END

Chapter3

27

Button Key no function

D

Key board cable

Plug in?

Press Menu key check

have function?

no

no

Check K/B cable or

replace K/B cable

Replace K/B cable

Press Menu key check

have function?

no

Replace K/B cable

END

END

28

Capter3

RF no Display

E

RF cable

plug in?

no

Check RF cable or

Replace RF cable

Replace I/O B

RF can

Display?

no

Replace M/B

END

Chapter3

29

Component 1, 2 no Display

F

Component cable

plug in?

no

Check component cable or

Replace component cable

Replace IO/B

Component can display?

no

Replace M/B

END

30

Capter3

AV1,AV2 no Display

G

CVBS cable

plug in?

no

Check CVBS cable or

replace CVBS cable

Replace IO/B

CVBS can

Display?

no

Replace m/B

END

Chapter3

31

Speaker no Sound

H

Audio R/L source

had plug in?

no

Check audio R/L

Source cable

Video can display?

no

Check video cable or

replace video cable

Mute turn off

Volume set 50

Speaker R/L

cable plug in?

no

Check speaker cable or

Replace speaker cable

Speaker have

sound output

no

Replace IO/B or speaker

Speaker have

Sound out put?

no

Replace M/B

END

32

Capter3

VGA no Display

I

VGA cable

plug in?

no

Check VGA cable or

replace VGA cable

Read EDID data

EDID data normal?

no

Write EDID data

VGA can display?

no

Replace M/B

END

Chapter3

33

HDMI no Display

J

Plug in HDMI cable?

no

Check HDMI cable or

replace HDMI cable

Read EDID data

EDID data normal?

no

Write EDID data

HDMI can display?

no

Replace M/B

END

34

Capter3

HDMI no Sound

K

HDMI cable plug in?

Read EDID data

EDID data normal?

Sound output? Replace M/B

no

no

no

Check HDMI cable

or replace HDMI cable

Write EDID data

END

Chapter3

35

VGA no sound

L

PC can display?

no

Check video cable or

PC or replace VGA cable

Mute turn off

Volume set to 50

Audio line in

Cable plug in?

no

Check line in cable or

Replace line in cable

Sound normal?

no

Replace M/B

36

END

Capter3

Component no Sound

M

Component

cable plug in?

no

Check component cable or

Replace component cable

Mute turn off

Volume=30

Earphone remove

Component

Source can display

Component

Sound normal?

no

no

Check component cable or

Replace component cable

Replace IO/B

Component

Sound normal?

END

no

Replace M/B

Chapter3

37

AV1/S-V no Sound

N

AV1/S-video/R-L

Cable plug in?

Mute turn off

Volume =30

Earphone remove

AV1/S-video source

Can display?

AV1/S-video source

Can display?

no

no

no

Check video and R-L cable
Or replace video or R-L cable

Check video and R-L cable
Or replace video or R-L cable

Replace IO/B

AV1/S-video

Sound normal?

no

Replace M/B

38

END

Capter3

Chapter 4
FRU (Field Replaceable Unit) List

This section gives you the FRU (Field Replaceable Unit) list in global configurations of AT3730B 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.

Chapter4

39

PARTS

Part Name Description TVE Part No. Acer Part No.
Accessory

REMOTE REMOTE CONTROLLER (EURT54B006) GP DQ754B00600 25.M4307.001
BATTERY BATTERY LR03GW/2SK (ALKALINE 1.5V) GP AHDALR03006
IO&TUNER LABEL LABEL (IO&TUNER) 7FPA(HC7FP001,REV3A)GP HC7FP001010 40.M4407.001

BOARD

MAIN/B HV4E M/B ASSY(FOR 7FPA)AU GP 21HV4MB0030 55.M4407.001

IO/B HH6A IO/B ASSY(PAL-AUSTRALIA) GP 22HH6IB0029 55.M12V7.005
TUNER/B HH2 DVB-T TUNER/B ASSY(FOR 72PA) GP 29HH2TTB005

CPU/B VWA7 CPU/B ASSY(FOR74PA)HD DVB-T,AUS-A G 32VWACB0010 55.M4307.002

IR/B JL7 IR/B ASSY(FOR HV7) GP 33JL7IB0014 55.M25V7.003

KEYPAD/B JL7 KEYPAD/B ASSY GP 34JL7KB0001 55.M25V7.002
POWER/B PWR 235W,DPS-235CP-2 A(90~264VAC) GP AF235B00000

Cable

CABLE LVDS CABLE 7FPA LVDS(50P/30P,220MM,REV1A)GP DD7FPALC006

CABLE INV CABLE INVAU(14P/10P/4P,2A)HX4E GP DDHX4EIV000 50.M34V7.003
CABLE SPEAK CABLE SPEAKER(4P/2P/3P,R1A)HX7 GP DD0HX7SP004
CABLE MB/IR CABLE MB/IR/BTN(10/9/8,R1A)HV7 GP DD0HV7IR005

CABLE P/MB/DT CABLE P/MB/DT(14P/10P/8P,R1A)HX7 GP DD0HX7TH106 50.M3507.004
CABLE AUDIO-PW CABLE ASSY HV2 AUDIO-PW (8P/7P,1A)GP DD0HV2AB007

CABLE GND CABLE ASSY HH2 GND(1P/1P,1A)GP DD0HH2TH004 50.M12V7.007

CABLE MB/DT CABLE MB/DT(80MM,36P/36P,3A)HV4E GP DDHV4ETH301 50.M3507.005

PWR CORD PWR CORD SP-502B+IS-14 3P 1.8M(AUST)B GP DM333181T91 27.M12V7.001

Case/Cover/Bracket/Assembly

LCD BEZEL ASSY HV7 LCD-BEZEL ASSY GP 36HV7LBTN05 60.M24V7.001

BACK COVER JL7J REAR-COVER ASSY GP 37JL7RCSA04 60.M24V7.002
STAND ASSY HV7 STAND ASSY GP 27HV7SATN08
STAND BASE STAND BASE HV7E(EAHV7003,REV3A) GP EAHV7003011
STAND ROD BKT STAND ROD BKT R/L HX7E(FBHX7001,REV3A)GP FBHX7001015

STAND BKT

STANDOFF STANDOFF M3L6.5 AH2(FBAH2007,REV3A) GP FBAH2007016 86.M3507.001

STANDOFF STANDOFF M3L29.4 AH2(FBAH2008,REV3A) GP FBAH2008012 86.M3507.002

STANDOFF STANDOFF M3L37.5 AH2(FBAH2009,REV3A) GP FBAH2009019 86.M3507.003

PANEL BKT LCD PANEL BKT UP HV7E(FAHV7006,REV3A) GP FAHV7006011 33.M24V7.004

D-TUNNER BKT D-TUNNER BKT AH2(FBAH2001,REV3A) GP FBAH2001018 33.M3507.003
WIRE SADDLE CHA-4 WIRE SADDLE CHA-4 VV3(EBVV3006,REV3A) GP EBVV3006014

40

Capter4

STAND BRACKET-L AH2(FBAH2003,REV3C)GP FBAH2003011
STAND BRACKET-R AH2(FBAH2004,REV3C)GP FBAH2004017

WIRE SADDLE MWS-7 WIRE SADDLE MWS-7 VV3(EBVV3010,REV3A) GP EBVV3010011

LCD

LCD LCD(TFT ) 37.0" T370XW02 V5(WX GA) GP AA0370XW102
LCD LCD(TFT) 37.0" T370XW02 V5 STN B/S GP AA0370XW103

SPEAKER

SPEAKER ASSY SPK ASSY HV2A H122CC50-51C-L(2P,1A) GP DN22CC50005 23.M25V7.001

SPEAKER ASSY SPEAKER ASSY AH2T H122CC50-51C-R(3P) GP DN22CC50013 23.M25V7.002

LABEL

LABEL (POWER) LABEL (POWER) HV7N(HCHV7002,REV3A) GP HCHV7002017 40.M24V7.001
LABEL (BUTTONS) LABEL (BUTTONS) HV9(HCHV9006,REV3B) GP HCHV9006010

LABEL (IO&TUNER) LABEL (IO&TUNER) 7FPA(HC7FP001,REV3A)GP HC7FP001010 40.M4407.001
BOX LABEL BOX LABEL(130WX150L)VT1(HCVT1004,R3A) GP HCVT1004017
RATING LABEL RATING LABEL HV7(HCHV7005,REV3A)AT3720 HCHV7005016

MISCELLANEOUS

GASKET (LCD SUPPORT) GASKET (LCD SUPPORT)HX7E(GBHX7002,3A) GP GBHX7002011
GASKET (IO SIDE) GASKET (IO SIDE)HX7E(GBHX7001,REV3A) GP GBHX7001015

GASKET TUNER GASKET TUNER ESD HX7E(GBHX7003,REV3A) GP GBHX7003018 47.M24V7.001

SCREW

SCREW SCREW T4*12-B(BNI) GP ME40120BJ24 86.M25V7.003
SCREW SCREW T3*8-B(BNI) GP MT30080BJ20 86.M08V7.007
SCREW SCREW M4*10-P(BNI)SPRING+PLANE WASHE GP MS40100PCF1 86.M24V7.001
SCREW SCREW M3*6-B(BNI ) GP MM30060BJ25 86.M08V7.003
SCREW SCREW M4*6-B(BNI ) GP MM40060BJ27 86.M25V7.005
SCREW SCREW M4*6 P (NI) GP MM40060PCE2 86.M01V7.002
SCREW SCREW T3*8-B(BNI) GP MT30080BJ20 86.M08V7.007
SCREW SCREW F3.0*6-B(NI)GP MF30060BBJ6
SCREW SCREW F3.0*8,B(BNI) GP MF30080BJ27
SCREW SCREW M3*6-B(BNI ) GP MM30060BJ25 86.M08V7.003
SCREW SCREW T4*7-B(NI) GP MT40070BBJ5
SCREW SCREW M4.0*8-B (N I)GP MM40080BBJ 4
NUT IO EA1 NUT IO EA1(MBEA1001,REV3D)GP MBEA1001012

Chapter4

41

Exploded parts list

ITEM PART NAME DESCRIPTION ACER PART NO. QTY

>>STAND ASSY(27HV7SATN08)

1 EAHV7003011 STAND BASE HV7E(EAHV7003,REV3A) GP 1
2 FBHX7001015 STAND ROD BKT R/L HX7E(FBHX7001,REV3A)GP 2
3 FBAH2003011 STAND BRACKET-L AH2(FBAH2003,REV3C)GP 1
4 FBAH2004017 STAND BRACKET-R AH2(FBAH2004,REV3C)GP 1
5 GAVV3001011 RUBBER FOOT VV3(GAVV3001,REV3A)GP 6
6 MT40070BBJ5 SCREW T4*7-B(NI) GP 8
7 MM40080BBJ4 SCREW M4.0*8-B(NI)GP 12
8 GAHX2001016 RUBBER FOOT HX2(GAHX2001,REV3A)GP 2

>>LCD BEZEL ASSY(36HV7LBTN05)

1 EAHV7002015 FRONT BEZEL HV7E(EAHV7002,REV3C) GP 1
2 EBHV7004010 LED LENS HV7E(EAHV7004,REV3A) GP 1
3 EBHV7003010 IR LENS HV7E(EBHV7003,REV3A) GP 1
4 EBHV7002016 AV3 DUMMY FRAME HV7E(EBHV7002,3A) GP 1
5 FFVWE002012 LOGO ACER 32 VWE2(FFVWE002,REV3A)GP 1
6 HCHV9006010 LABEL (BUTTONS) HV9(HCHV9006,REV3B) GP 1
7 MF30060BBJ6 SCREW F3.0*6-B(NI)GP 1

8 MT30080BJ20 SCREW T3*8-B(BNI) GP 86.M08V7.007 2
9 JXHV2003015 WEAVE CUSHION 60X20 HV2(JXHV2003,R3A)GP 2

>> LCD PANEL ASSY(237FPLATN01)

AA0370XW102 LCD(TFT) 37.0" T370XW02 V5(WXGA) GP 1

1

AA0370XW103 LCD(TFT) 37.0" T370XW02 V5 STN B/S GP 1
2 DD7FPALC006 CABLE 7FPA LVDS(50P/30P,220MM,REV1A)GP 1
3 AF235B00000 PWR 235W,DPS-235CP-2 A(90~264VAC) GP 1

4 DDHX4EIV000 CABLE INVAU(14P/10P/4P,2A)HX4E GP 50.M34V7.003 1

5 MM40060BJ27 SCREW M4*6-B(BNI) GP 86.M25V7.005 2

>> LCD CHASSIS ASSY(247FPCSTN00)

1 357FPCKTN00 7FP CABLE KIT ASSY(&SPK) GP 1
2 EBHV7001010 FUNCTION KEY HV7E(EBHV7001,REV3A)GP 1
3 37JL7RCSA04 JL7J REAR-COVER ASSY GP 1
4 3AHV7LBTN01 HV7 LCD SUPPORT BKT-R ASSY GP 1
5 3BHV7LBTN01 HV7 LCD SUPPORT BKT-L ASSY GP 1
6 3CHX7PTBQ00 HX7E MAIN PCB TRAY ASSY GP 1
7 FAHV7006011 LCD PANEL BKT UP HV7E(FAHV7006,REV3A) GP 1
8 FBHH7004018 SIDE BRACKET-D/N HH7(FBHH7004,REV3B) GP 1
9 FBHH7007017 SIDE BRACKET-R/L-AUO HH7(FBHH7007,REV3A) 1

10 ME40120BJ24 SCREW T4*12-B(BNI) GP 41
11 MT30080BJ20 SCREW T3*8-B(BNI) GP 5

42

Capter4

12 MS40100PCF1 SCREW M4*10-P(BNI)SPRING+PLANE WASHE GP 6
13 MM30060BJ25 SCREW M3*6-B(BNI) GP 465
14 MM40060BJ27 SCREW M4*6-B(BNI) GP 16
15 MM40060PCE2 SCREW M4*6 P (NI) GP 1
16 GBHX7003018 GASKET TUNER ESD HX7E(GBHX7003,REV3A) GP 1
17 JXHX7001016 CONDUCTIVE TAPE (INV.) HX7E(REV3A) GP 1
18 JXHX7002012 CONDUCTIVE TAPE (TOP)HX7E(REV3A) GP 1

19 HCHV7002017 LABEL (POWER) HV7N(HCHV7002,REV3A) GP 40.M24V7.001 1

>> FLOATING ASSY

1 FA7FP001010 WALL MOUNT SHIELD 7FP(FA7FP001,REV3A)GP 1
2 MT30080BJ20 SCREW T3*8-B(BNI) GP 7
3 MBEA1001012 NUT IO EA1(MBEA1001,REV3D)GP 2
4 36HV7LBTN05 HV7 LCD-BEZEL ASSY GP 1

5 FBAH2001018 D-TUNNER BKT AH2(FBAH2001,REV3A) GP 33.M3507.003 1

6 FBAH2007016 STANDOFF M3L6.5 AH2(FBAH2007,REV3A) GP 86.M3507.001 2

7 FBAH2008012 STANDOFF M3L29.4 AH2(FBAH2008,REV3A) GP 86.M3507.002 2

8 FBAH2009019 STANDOFF M3L37.5 AH2(FBAH2009,REV3A) GP 86.M3507.003 1

9 MM30060BJ25 SCREW M3*6-B(BNI) GP 86.M08V7.003 2

Chapter4

43