BenQ G2450HM, GL2450HE, GL2450HM Service Manual
1
Applicable Country & Regions: Global
Service Manual for BenQ:
G2450HM: D-SUB + HDMI + DVI + AUDIO
P/N: 9H.L7NLA.TBW
GL2450HM: D-SUB + HDMI + DVI + AUDIO
P/N: 9H.L7CLA.TBE
GL2450HE: D-SUB + HDMI + DVI + AUDIO
P/N: 9H.L7CLA.FBE
Glossy Black Chassis Colors
Product Service Manual – Level 1~2
Version: 2nd
Date:10-31-2012
Notice:
For RO to input specific “Legal Requirement” in specific NS regarding to responsibility and
liability statements.
Please check BenQ’s eSupport web site, http://esupport.benq.com
, to ensure that you have the
most recent version of this manual.
First Edition (Sep. 2011)
©
Copyright BenQ Corporation 2011. All Right Reserved.
2
Content Index
Abbreviations & Acronyms ........................................................................................................................................ 3
1. About this Manual ................................................................................................................................................... 5
1.1 Important ............................................................................................................................................................ 5
1.2 Trademark .......................................................................................................................................................... 5
2. Introduction ............................................................................................................................................................. 6
2.1 RoHS (2002/95/EC) Requirements – Applied to all countries require RoHS. .................................................... 6
2.2 Safety Warning and Notice ................................................................................................................................. 6
2.3 Compliance Statement ....................................................................................................................................... 7
3. General Description ................................................................................................................................................ 8
4. Related service information ................................................................................................................................... 8
5. Product Overview ................................................................................................................................................... 9
5.1 Monitor Specifications ........................................................................................................................................ 9
5.2 Panel Inspection Specification .......................................................................................................................... 21
Level 1 Cosmetic / Appearance / Alignment Service ............................................................................................ 26
Visual Inspection & Cleaning .................................................................................................................................. 26
F/W Upgrade SOP .................................................................................................................................................. 26
Adjustment / Alignment Procedure ......................................................................................................................... 43
Level 2 Circuit Board and Standard Parts Replacement ...................................................................................... 58
Product Exploded View .......................................................................................................................................... 58
Six Angles’ View ..................................................................................................................................................... 60
Product Disassembly/Assembly ............................................................................................................................. 61
Block Diagram ........................................................................................................................................................ 71
Schematic Diagram ................................................................................................................................................ 74
Troubleshooting ...................................................................................................................................................... 85
PCB LAYOUT ............................................................................................................................................................. 91
Appendix 1 – Screw List / Torque ........................................................................................................................... 99
3
Abbreviations & Acronyms
A
ADC Analog to Digital Converter
AFC Automatic Frequency Control: control signal used to tune to the correct frequency
B
BenQ BenQ Corporation
BTSC Broadcast Television System Committee
C
CPU Central Process Unit
CVBS Composite Video Blanking and Synchronization
D
DLP Digital Light Processing / Texas Instruments®
DMD Digital Micro mirror Device
DRAM Dynamic RAM
DVI Digital Visual Interface
DVI-D Digital Visual Interface-digital
DVI-I Digital Visual Interface-Integrated
E
EEPROM Electrically Erasable and Programmable Read Only Memory
F
FLASH FLASH memory
G
G-TXT Green Teletext
H
HDMI High Definition Multimedia Interface, digital audio and video interface
HP Head Phone
I
I2C Integrated IC bus
L
LED Light Emitting Diode
LVDS Low Voltage Differential Signal, data transmission system for high
M
MOSFET Metal Oxide Semiconductor Field Effect Transistor
N
4
NC Not Connected
NVM Non Volatile Memory: IC containing TV related data (for example, options)
O
OSD On Screen Display
P
PC Personal Computer
PCB Printed Circuit Board (or PWB)
R
RC Remote Control transmitter
RGB
Red, Green and Blue. The primary color signals for TV. By mixing levels of R, G
and B, all colors (Y/C) are
ROM Read Only Memory
S
SDA Data signal on I2C bus
SDRAM Synchronous DRAM
SW Sub Woofer / Software
T
THD Total Harmonic Distortion
V
VGA Video Graphics Array
Y
YPbPr
Component video (Y= Luminance, Pb / Pr= Color difference signals B-Y and R-Y,
other amplitudes w.r.t. to YUV)
Y/C
Video related signals: Y consists of luminance signal, blanking level and sync; C
consists of color signal.
5
1. About this Manual
The purpose of Service Manual is to provide a guide line to engineers to repair different models. The appearance
and capability is introduced in this Service Manual. It is better for repair engineer to have a rough idea of this model
through reading the Service Manual. Please do pay attention to the item part of the disassembly when repair the
machine and also do the protection of panel any time. When repairing the circuit board, please follow the
requirement of RoHS and refer to the circuit diagram and repairing process that attached in the Service Manual.
The method of firmware updated, the way of using the menu and some information that may be used when
repairing are also attached in the Service Manual that provide repair engineer various choice.
1.1 Important
Only trained service personnel who are familiar with this BenQ Product shall perform service or maintenance to it.
Before performing any maintenance or service, the engineer MUST read the “Important Safety Information”.
1.2 Trademark
6
2. Introduction
This section contains general service information, please read through carefully. It should be stored for easy
access place.
2.1 RoHS (2002/95/EC) Requirements – Applied to all countries require RoHS.
The RoHS (Restriction of Hazardous Substance in Electrical and Electronic Equipment Directive) is a legal
requirement by EU (European Union) for the global electronics industry which sold in EU and some counties also
require this requirement. Any electrical and electronics products launched in the market after June 2006 should
meet this RoHS requirements. Products launched in the market before June 2006 are not required to compliant
with RoHS parts. If the original parts are not RoHS complaints, the replacement parts can be non ROHS
complaints, but if the original parts are RoHS compliant, the replacement parts MUST be RoHS complaints.
If the product service or maintenance require replacing any parts, please confirming the RoHS requirement before
replace them.
2.2 Safety Warning and Notice
Installation
1. Do not use your monitor under any of the following environmental conditions:
Extremely high or low temperature, or in direct sunlight
Dusty places
Highly humid, exposed to rain, or close to water
Exposed to vibrations or impacts in places such as cars, buses, trains, and other rail vehicles
Near heating appliances such as radiators, heaters, fuel stoves, and other heat-generating items (including
audio amplifiers)
An enclosed place (such as a closet or bookcase) without appropriate ventilation
An uneven or sloping surface
Exposed to chemical substances or smoke
2. Do not block vents and openings by clothes or curtains.
3. Carry the monitor carefully.
4. Do not place the monitor face down on the floor or a desk surface directly. Otherwise, scratches on the panel
surface may occur.
5. Do not place heavy loads on the monitor to avoid possible personal injury or damage to the monitor.
6. Ensure that children do not hang or climb onto the monitor.
7. Keep all packing bags out of reach of children.
7
Operation
1. To protect your eyesight, please refer to the user manual to set the optimal screen resolution and the viewing
distance.
2. To reduce eye fatigue, take a break on a regular basis while using the monitor.
Avoid taking either one of the following actions for a long time. Otherwise, burn marks may occur.
Use the monitor in the aspect ratio of 16:9.
Place a still image (such as an OSD menu, fixed text or image) on the screen.
3. To avoid possible damage to the monitor, do not touch the monitor panel by hand, pen, or any other sharp
objects.
4. Excessively frequent plug and unplug of video connectors (D-sub / DVI) may cause damage to the monitor.
5. This monitor is designed mainly for personal use. If you want to use the monitor in a public place or a harsh
environment, contact your nearest BenQ service center for assistance.
6. To avoid possible electric shock, do not dissemble or repair the monitor.
7. If a bad smell or an abnormal sound appears to come from the monitor, contact your nearest BenQ service
center for assistance immediately.
Cleaning
1. Ensure that the power is unplugged before cleaning your monitor
2. Use a monitor cleaner and a soft cloth to clean your monitor.
3. Do not use solvents such as alcohol to clean your monitor.
Power
1. To avoid possible damage to the monitor, do not use it in a region where power supply is unstable.
2. Ensure that the power cord is connected to a grounded power outlet before turning on the monitor.
3. Use only the power cord provided by BenQ.
4. Never use a power cord that appears to be damaged or frayed.
5. To avoid possible danger, observe the total electric load when using the monitor with a (multi-outlet) extension
cord.
6. Always turn off the monitor before unplugging the power cord.
2.3 Compliance Statement
Caution: This Optical Storage Product contains a Laser device. Refer to the product specifications and your local
Laser Safety Compliance Requirements.
8
3. General Description
This new LCD (Liquid Crystal Display) monitor BenQ G2450HM&GL2450HM/GL2450HE offers numerous features
and functions, for example:
Panel Type: TN + CCFL (For G2450HM)
Panel Type: TN + LED (For GL2450HM/GL2450HE)
Minimal space requirements thanks to slim casing
Optimum ergonomic characteristics (totally distortion-free, excellent picture definition and color purity right into
the corners)
Contrast ratio 50000:1 (DCR), brightness 300nits (For G2450HM)
Contrast ratio 12 million:1 (DCR), brightness 250nits (For GL2450HM/GL2450HE)
MAX. resolution (1920X1080)
Presentation of up to 16.7 M colors (in conjunction with an appropriate graphics card)
Automatic scanning of horizontal frequencies from 30 to 83 kHz and refresh rates (vertical frequencies) from 50
to 76 Hz (absolutely flicker-free)
Digital screen controller with microprocessor for storing 15 different display modes
Freely adjustable color alignment for matching the screen colors to the colors of various input and output devices
Convenient operation via integrated OSD (On-Screen-Display) menu
VESA-DDC compatibility
Plug & play capability
Power management for reducing power consumption when the computer is not in use
This operating manual contains important information you require to start up and run your LCD monitor.
This specification defines the requirements for the 24″ MICROPROCESSOR based Multi-mode supported high
resolution color LCD monitor. This monitor can be directly connected to general 15-pin VGA connector and 24-pin
DVI-D connector, also supports VESA DPMS power management and plug & play function.
Additional information
Due to the nature of liquid crystal display (LCD) technology, the picture resolution is always fixed. For the best
display performance, please set the display resolution to 1920X1080 pixels with an aspect ratio of 16:9. This is
called “Native Resolution” or maximal resolution - that is, the clearest picture. Lower resolutions are displayed on a
full screen through an interpolation circuit. Image blurring across pixel boundaries can occur with the interpolated
resolution depending upon the image type and its initial resolution.
4. Related service information
This Service Manual contains general information. There are 2 levels of service:
Level 1: Cosmetic / Appearance / Alignment Service
Level 2: Circuit Board or Standard Parts Replacement
Service Web Site
eSupport URL: http://esupport.benq.com
9
5. Product Overview
5.1 Monitor Specifications
G2450HM GL2450HM/GL2450HE
Conf. 2
D-sub (include component source) +
DVI-D + HDMI + speaker
Conf. 3
D-sub (include component source) +
DVI-D + HDMI + speaker
Panel / Display
Panel Type (TN / VA /
IPS)
TN + CCFL TN + LED
Panel Size 24"W(16:9) 24"W(16:9)
Display Area 531.36x298.89 531.36x298.89
Max. Resolution 1920X1080 1920X1080
Pixel Pitch 0.276 0.276
Brightness (Typ.) 300 cd/m2 250 cd/m2
Contrast Ratio (Typ.)
/ DCR (Min.)
1000:1(Panel)/50000:1 (DCR) 1000:1(Panel)/12M:1 (DCR)
Viewing Angle (H/V),
CR≥10
170/160 170/160
Display Colors 16.7M 16.7M
Response Time 5ms (Tr+Tf) 5ms (Tr+Tf)
GtG response Time 2ms 2ms
MPRT N/A N/A
NTSC ratio 72% 70~72%
Video
BenQ Senseye
TM
Technology
Senseye 3 Senseye 3
BenQ Senseye
TM
Preset Modes
6 Modes (by hotkey) : Standard /
Movie / Game / Photo / s-RGB / ECO
6 Modes (by hotkey) : Standard /
Movie / Game / Photo / s-RGB / ECO
Color Temperature
Selection
Normal (6500°K) / Reddish (5800°K) /
Bluish (9300°K) / User Mode
Normal (6500°K) / Reddish (5800°K) /
Bluish (9300°K) / User Mode
AMA (Over Drive ) Yes Yes
Hor. Frequency (kHz) 30-83 30-83
Ver. Frequency (Hz) 50-76 50-76
Video Bandwidth
(MHz)
205 205
Audio Speakers (built-in) 2W x 2 2W x 2
Input/Output PC Video Input D-sub/DVI-D/HDMI D-sub/DVI-D/HDMI
10
Audio line in Yes Yes
Earphone Jack Yes Yes
Power Supply
Voltage Rating AC: 100~240V (Built-in) AC: 100~240V (Built-in)
Power-On Mode <35W (max) <35W (max)
Standby Mode <0.3W (max) <0.3W (max)
Power Off Mode <0.3W (max) <0.3W (max)
Mechanical
Design
Chassis Colors
(proposal A)
Glossy black, detail refer to artwork Glossy black, detail refer to artwork
Carton
Brown Carton with at least C flute (BE
flute CTN for BQjp shipments)
Brown Carton with at least C flute (BE
flute CTN for BQjp shipments)
Power LED Green (ON)/ Amber (Standby) Green (ON)/ Amber (Standby)
Tilt (Up / Down) 15° ~ -5° 15° ~ -5°
VESA Wall Mount 100 x 100 mm 100 x 100 mm
Kensington Lock Yes Yes
Container Loading
(foam cushion 40')
>1300 >1300
Container Loading
(foam cushion 20')
>650 >650
Multi-language
Support
OSD
17 Languages (English / Francais /
Deutsch / Italiano / Espanol / Polish /
Czech / Hungarian / Serbo-croatian /
Romanian / Netherlands / Russian /
Swedish / Portuguese / Japanese /
Chinese / S-Chinese)
17 Languages (English / Francais /
Deutsch / Italiano / Espanol / Polish /
Czech / Hungarian / Serbo-croatian /
Romanian / Netherlands / Russian /
Swedish / Portuguese / Japanese /
Chinese / S-Chinese)
Other feature
Vista Premium Premium
Win 7 Yes Yes
Dynamic Power
Saving (DPS)
Yes Yes
Accessories Refer to SKU list Refer to SKU list
Regulation
Approvals
Refer to the worksheet
"RFQ-Regulatory"
Refer to the worksheet
"RFQ-Regulatory"
11
5.1.1 Certification
G2450HM
Region
Shipment
Country
(Pls
select)
Country
Certification / Requirement
Remark
Request for
Certification
(Pls select)
Certification
(Black is
mandatory
and blue is
voluntary)
Regulatory
Type
(safety/safety
&
EMC/EMC/GP)
A
pplied by
vendor
A
pplied
by
BenQ
BenQ
Sample
Reguest
Asia-Pacific
V
Australia,
New
Zealand
V C-Tick EMC V
Must include
radiation test
result for
frequency
above 1GHz
V China
V CCC Safety & EMC V
Including CCC
certificate,
CCC report
and CCC label
printing
permission
Eff(Minimun)
Level =
1 2
Energy Label GP V
V China RoHS GP
Vender
provide
relevant
information
and report
V China WEEE GP See Remark
Recycling
notice in User
Manual is
required.
V CECP GP V 1 set.
One sample of
DVT is
required for
the assigned
third-party
test.
V Japan
V VCCI EMI V
V PSE Safety V
PSE DOC for
HDMI sku
base on CB
12
and VCCI
V J-Moss GP
Vender
provide
relevant
information
and report
Class Level:
★ ★★
★★★
PC3R GP
Vender
provide
relevant
information
and report
V
If VOC
test is
requested,
please
provide 1
sample for
testing.
Meet the
PC3R
requirement of
2009 version.
V Korea
KCC EMC V
V KC Safety & EMC V
V e-Standby GP
Vender
provide
relevant
information
and
formal test
report
(Korean)
V 1 set.
One sample of
DVT
is required for
the assigned
third-party
test.
V Korea RoHS GP
Vender
provide
relevant
information
and report
V Singapore V PSB Safety V
13
V Taiwan V BSMI Safety & EMC V
Including
BSMI
certificate,
BSMI report
and BSMI
authorization
letter for
BENQ if the
applicant of
BSMI
certificate is
vendor and
vendor will
perform the
clearance for
BenQ.
V
Saudi
Arabia
V SASO Safety V
V Turkey
V
EEE
Directive
GP
Vender
provide
relevant
information
and report
V TR RoHS
V CE Safety & EMC V
Same as the
CE of EU.
America
V Argentina V S Mark Safety V
TUV-S,
IRAM-S…etc
V Canada
V
USA-Canada
Certification
Safety V
Applicable
safety
certification
(such as
cULus,
cCSAus…etc.)
V IC EMC V
V
United
States
V
USA-Canada
Certification
Safety V
Applicable
safety
certification
(such as
cULus,
cCSAus…etc.)
V FCC EMC V
14
Class Level:
gold silver
cuprum
EPEAT GP
Vender
provide
relevant
information
and report
V
V Mexico V NOM Safety V
European
Union
V
Member
countries of
EU
V CE Safety & EMC V
V EuP GP
Vender
provide
relevant
information
and report
V WEEE GP
Vender
provide
relevant
information
and report
V REACH GP
Vender
provide
relevant
information
and report
V Germany
GS Safety V
V Bauart Safety V
V ISO9241-307 Safety V
V MPR II Safety V
Eastern
Europe
V Russia V GOST Safety & EMC V
V Ukraine
V UkrSEPRO Safety V
V EMC DoC EMC V
International V CB Scheme V CB Safety V
for CE DOC or
PSE DOC or
international
certification
International V International V RoHS GP
Vender
provide
relevant
information
and report
15
International V International V
BenQ
ecoFACTS
GP
Vender
provide
relevant
information
and report
Follow
ecoFACTS
Checklist in
RFQ
International V All V Energy Star GP V
Including Test
Report by EPA
recognition of
Accreditation
Laboratory
and Certificate
by EPA
recognition of
Certification
Body (CB).
Effective date:
2011-1-1.
BenQ phase
in date:
2010-12-06.
International V International
TCO'03 Safety & GP V
TCO'06 Safety & GP V
V
TCO
Displays 5.0
Safety & GP V
16
GL2450HM//GL2450HE
Region
Shipmen
t
Country
(Pls
select)
Country
Certification / Requirement
Remark
Request for
Certification
(Pls select)
Certification
(Black is
mandatory
and blue is
voluntary)
Regulatory
Type
(safety/safety
&
EMC/EMC/GP)
A
pplied by
vendor
Applied
by
BenQ
BenQ
Sample
Reguest
Asia-Pacific
V
Australia,
New
Zealand
V C-Tick EMC V
Must include
radiation test
result for
frequency
above 1GHz
V China
V CCC Safety & EMC V
Including CCC
certificate,
CCC report
and CCC label
printing
permission
Eff(Minimun)
Level =
1 2
Energy Label GP V
V China RoHS GP
Vender
provide
relevant
information
and report
V China WEEE GP See Remark
Recycling
notice in User
Manual is
required.
V CECP GP V 1 set.
One sample of
DVT is
required for
the assigned
third-party
test.
V Japan
V VCCI EMI V
V PSE Safety V
PSE DOC for
HDMI sku
base on CB
17
and VCCI
V J-Moss GP
Vender
provide
relevant
information
and report
Class Level:
★ ★★
★★★
PC3R GP
Vender
provide
relevant
information
and report
V
If VOC
test is
requested,
please
provide 1
sample for
testing.
Meet the
PC3R
requirement of
2009 version.
V Korea
KCC EMC V
V KC Safety & EMC V
V e-Standby GP
Vender
provide
relevant
information
and
formal test
report
(Korean)
V 1 set.
One sample of
DVT is
required for
the assigned
third-party
test.
V Korea RoHS GP
Vender
provide
relevant
information
and report
V Singapore V PSB Safety V
18
V Taiwan V BSMI Safety & EMC V
Including
BSMI
certificate,
BSMI report
and BSMI
authorization
letter for
BENQ if the
applicant of
BSMI
certificate is
vendor and
vendor will
perform the
clearance for
BenQ.
V
Saudi
Arabia
V SASO Safety V
V Turkey
V
EEE
Directive
GP
Vender
provide
relevant
information
and report
V TR RoHS
V CE Safety & EMC V
Same as the
CE of EU.
America
V Argentina V S Mark Safety V
TUV-S,
IRAM-S…etc
V Canada
V
USA-Canada
Certification
Safety V
Applicable
safety
certification
(such as
cULus,
cCSAus…etc.)
V IC EMC V
V
United
States
V
USA-Canada
Certification
Safety V
Applicable
safety
certification
(such as
cULus,
cCSAus…etc.)
V FCC EMC V
19
Class Level:
gold silver
cuprum
EPEAT GP
Vender
provide
relevant
information
and report
V
V Mexico V NOM Safety V
European
Union
V
Member
countries of
EU
V CE Safety & EMC V
V EuP GP
Vender
provide
relevant
information
and report
V WEEE GP
Vender
provide
relevant
information
and report
V REACH GP
Vender
provide
relevant
information
and report
V Germany
GS Safety V
V Bauart Safety V
V ISO9241-307 Safety V
V MPR II Safety V
Eastern
Europe
V Russia V GOST Safety & EMC V
V Ukraine
V UkrSEPRO Safety V
V EMC DoC EMC V
International V CB Scheme V CB Safety V
for CE DOC or
PSE DOC or
international
certification
International V International V RoHS GP
Vender
provide
relevant
information
and report
20
International V International V
BenQ
ecoFACTS
GP
Vender
provide
relevant
information
and report
Follow
ecoFACTS
Checklist in
RFQ
International V All V Energy Star GP V
Including Test
Report by EPA
recognition of
Accreditation
Laboratory
and Certificate
by EPA
recognition of
Certification
Body (CB).
Effective date:
2011-1-1.
BenQ phase
in date:
2010-12-06.
International V International V
TCO
Displays 5.0
Safety & GP V
21
5.2 Panel Inspection Specification
1. Scope:
1.1 The incoming inspection standards shall be applied to TFT-LCD Modules (hereinafter called "Modules") that
supplied by AU Optronics Corporation (hereinafter called "seller").
1.2 Specifications contains
_ Electrical inspection specification
_ Appearance specification
_ Outside dimension specification
2. Incoming inspection:
The buyer (customer) shall inspect the modules within twenty calendar days of the delivery date (the "inspection
period”) at its own cost. The results of the inspection (acceptance or rejection) shall be recorded in writing, and a
copy of this writing will be promptly sent to the seller. The buyer may, under commercially reasonable reject
procedures, reject an entire lot in the delivery involved if, within the inspection period, such samples of modules
within such lot show an unacceptable number of defects in accordance with this incoming inspection standards,
provided however that the buyer must notify the seller in writing of any such rejection promptly, and not later than
within three business days of the end of the inspection period. Should the buyer fail to notify the seller within the
inspection period, the buyer's right to reject the modules shall be lapsed and the modules shall be deemed to have
been accepted by the buyer.
3. Inspection sampling method:
Unless otherwise agree in writing, the method of incoming inspection shall be based on MIL-STD-105E.
3.1 Lot size: Quantity per shipment lot per model.
3.2 Sampling type: Normal inspection, single sampling.
3.3 Sampling level: Level II.
3.4 Acceptable quality level (AQL):
Major defect: AQL= 1.0%.
Minor defect: AQL= 2.5%.
4. Inspection instruments:
4.1 Pattern generator: LD-2000 or equivalent model.
4.2 Video board: AU video board or equivalent. The output of the signal should comply with the specification
provided by AU.
4.3 Luminance colorimeter: Topcon BM-7 or equivalent model
5. Inspection environment conditions:
5.1 Room temperature: 20 ~ 25 C
5.2 Humidity: 65 ± 5% RH.
5.3 Illumination: Fluorescent light (day-Light Type) display surface illumination to be 300 ~ 700 Lux. (standard
500Lux.)
5.4 To be a distance about 35±5 cm in front of LCD unit, viewing line should be perpendicular to the surface of the
module judge the visual appearance with human’s eyes (±30° viewing edge will be allowed).
5.5 Take off the protection film of polarizer while judging the display area.
5.6 If there is any question while judging, check the panel again in operating mode.
6. Classification of defects:
Defects are classified as major defects and minor defects according to the degree of defectiveness defined herein.
22
Major defects: A major defect is a defect that is likely to result in failure, or to reduce materially the usability of the
product for its intended purpose. Minor defects: A minor defect either is a defect that is not likely to reduce materially
the usability of the product for its intended purpose, or is a departure from an established having little bearing on the
effective use or operation of the product.
6.1 Electrical inspection specification
Inspection Item Specification
1 Line defect Can’t be seen.
2 Bright dots ≤ 2 dots (Note1, 4)
3 Dark dots ≤ 5 dots
4 Total dots defect ≤ 5 dots
5
Adjacent dot defect
(Note 1, 2, 3)
Two continuous bright dots (vertical, horizontal, oblique): ≤ 1 pair
Three or more continuous bright dots (vertical, horizontal, oblique):
Not allowed
Two continuous dark dots (vertical, horizontal, oblique): ≤ 2 pair.
Three or more continuous dots – to be of any combination of dark dot
and bright dot (vertical, horizontal, oblique): Not allowed
Distance between 2 Bright dots: ≥ 15 mm
Distance between 2 Dark dots: ≥ 15 mm
Distance between Bright and Dark dots: ≥ 15 mm
6
Display non-uniformity
Or Mura (Note 5,6)
Use 8% ND filter or judged by equivalent limit sample
Note 1: For bright dot defect, bright area should be larger than 1/2 area of a sub-pixel to be count as 1 dot defect. A
dot defect that is smaller than the defined dot defect will be treated as small bright dot.
The drawing of 1/2 area sub-pixel definition: The 1/2 area sub-pixel can be defined as below one or more of specific
shapes (Fig.1).
Fig.1 Fig.2
All bright dot defects should not be noticeable by observer under specified inspection environment (Please refer to
item 5).
Note 2: (Fig.2) Adjacent-dot defect (refer to picture, dot 1,2,..,8 around A are all A’s adjacent dots) should be
inspected under the same display pattern in any one of White /Black /Red /Green /Blue /Monotone Gray pattern.
Note 3: Adjacent-dot defect should be observed under any one of White /Black /Red /Green /Blue pattern. 1 pair of
bright dots equals 2 dots. Inspection patterns: Standard inspection patterns of dot defect are listed below. AUO uses
these patterns as standard criteria for judging dot defect. Please inform AUO if any other pattern is to be used to
examine dot defect.
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Test Pattern Defect
Full Black For bright dot(s)
Full White For dark dot(s)
Monotone Red /Green /Blue For bright and dark dot(s)
Note 4: The judgment criteria of particle occurred bright dot is the same as bright dot judgment criteria.
Note 5: The display uniformity (general mura) symptoms will use 8% ND Filter. That is, the definition of Not
Noticeable means the symptom can be covered by 8% ND Filter.
Note 6: The inspection method of ND Filter - holding ND filter in front of the panel around 1 cm and examine the
panel from 35±5 cm in the front view for 3 seconds.
6.2 Appearance inspection specification
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Note 1: When L>=2W, defect count as liner defect.
Note 2: D=1/2(W+L)
Note 3: To verify the responsibility of following defects was caused by supplier, the IQC checks as requested on
above items before mass production such as the Polarizer Scratch, Gap Mura, TFT Glass broken…etc.
6.3 Outside dimension specification:
Testing
Order
Inspection Item Specification
Note
Name Unit Tolerance
1
Outside dimension (vertical)
mm ± 0.8 mm
Please refer to the product
spec for detailed dimension
definition
Note 1
2 Outside dimension (horizontal) mm ± 0.8 mm
3 Outside dimension (thickness) mm ± 0.8 mm
4 Weight g ± 100 g
5 Display tolerance ABS (a-b) mm 1.2 mm (Max.) Note 2
6 Display tolerance ABS (c-d) mm 1.2 mm (Max.) Note 2
7 Panel gap (Y) mm 1.0 mm (Max.) Note 3
Note 1: Thickness doesn’t include bending.
Note 2: Display tolerance definition
Note 3: Panel gap (Y) definition
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7. Inspection judgment:
7-1 The judgment of the shipped lot (acceptance or rejection) should follow the sampling plan of MIL-STD-105E,
single sampling, normal inspection, level II.
7-2 If the number of defects is equal to or less than the applicable acceptance level, the lot shall be accepted.
7-3 If the number of defects is more than the applicable acceptance level, the lot shall be rejected and the buyer
should inform the seller of the result of incoming inspection in writing
8. Precaution:
Please pay attention to the following items when you use the LCD Module with back-light unit.
1. Do not twist or bend the module and prevent the unsuitable external force for display module during assembly.
2. Adopt measures for good heat radiation. Be sure to use the module within the specified temperature.
3. Avoid dust or oil mist during assembly.
4. Follow the correct power sequence while operating. Do not apply the invalid signal, otherwise, it will cause
improper shut down and damage the module.
5. Less EMI: it will be more safety and less noise.
6. Please operate module in suitable temperature. The response time & brightness will drift by different temperature.
7. Avoid displaying a fixed pattern (exclude the white pattern) for a long period, which may lead to image-sticking.
8. Be sure to turn off the power when connecting or disconnecting the circuit.
9. Polarizer scratches easily, please handle it carefully.
10. Display surface never likes dirt or stains.
11. A dewdrop may lead to destruction. Please wipe off any moisture before using module.
12. Sudden temperature changes cause condensation, and it will cause polarizer damaged.
13. High temperature and humidity may degrade performance. Please do not expose the module to the direct
sunlight and so on.
14. Acetic acid or chlorine compounds are not friends with TFT display module.
15. Static electricity will damage the modules; please do not touch the module without any grounded device.
16. No parts of the panel should be dismantled without the presence of AU engineer or the product will not be
warranted.
17. Be careful do not touch the rear side directly because of the backlight high voltage.
18. No strong vibration or shock. It will cause module broken.
19. Storage the modules in suitable environment with regular packing.
20. Be careful of injury from a broken display module. Please avoid the pressure adding to the surface (front or rear
side) of modules, because it will cause the display non-uniformity or other function issue.
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Level 1 Cosmetic / Appearance / Alignment Service
Visual Inspection & Cleaning
Cleaning. Always unplug your monitor from the wall outlet before cleaning. Clean the LCD monitor surface with a
lint-free, non-abrasive cloth. Avoid using any liquid, aerosol or glass cleaners.
Slots and openings on the back or top of the cabinet are for ventilation. They must not be blocked or covered.
Your monitor should never be placed near or over a radiator or heat source, or in a built-in installation unless
proper ventilation is provided.
Never push objects or spill liquid of any kind into this product.
F/W Upgrade SOP
Upgrade by 715GT089-B/ C
1. Materials list
ISP JIG: 715GT089-B/C VGA cable PC
BenQ PN: 5D.Y3W37.031 TPV P/N: 089G728 GAA DB
Monitor USB cable USB port driver
TPV P/N: 089G1758 X
ISP tool: V4.5.0.8.0 New F/W
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2.Connection
3.Install USB driver.
3.1. When insert the USB cable to PC USB port, will pop up a Hardware Wizard to help you install the USB driver if
you use this ISP board first time. You can install it successfully as the below instruction step by step.
Remark: The USB driver files path: D:\FTC100103(Mstar)\FTCUSB.INF
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4. Install the ISP tool.
4.1.Copy the three files in one folder.
Click “Finish” to
complete the
USB serial port
driver installation.
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4.2. Double-click
to run the ISP tool.
4.3. Set the parameters in “Device” window. Tick “WP Pin pull to high during ISP”.
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4.4. Connect to the monitor. Click “Connect”. If the tool communicate with monitor successfully, the tool will detect
the flash type of monitor.
4.5. Load the F/W you want to upgrade.
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