BenQ G2220HD - 21.5" LCD Monitor User manual

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Product Service Manual – Level II
Service Manual for BenQ:
G2220HD
P/N: 9H.L07LB.QBx
Applicable for All Regions
Version: 001
Date:2008/12/05
Notice:
- For RO to input specific “Legal Requirement” in specific NS regarding to responsibilit
y
and liabilit
y
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 (Dec., 2008)
© Copyright BenQ Corporation 2008. All Right Reserved.

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Content Index
Abbreviations & Acronyms..............................................................................3
1About This Manual........................................................................................3
1.1. Trademark............................................................................................................ 3
2Introduction ...................................................................................................4
2.1. RoHS (2002/95/EC) Requirements...................................................................... 4
2.2. Safety Notice........................................................................................................ 4
2.3. Compliance Statement......................................................................................... 4
2.4. General Descriptions ........................................................................................... 4
2.5. Related Service Information................................................................................. 4
3Product Overview..........................................................................................5
3.1. Specification......................................................................................................... 5
3.2. Customer Acceptance ........................................................................................ 17
4. Level 1 Cosmetic / Appearance / Alignment Service...............................24
4.1. Software / Firmware Upgrade Process .............................................................. 24
4.2. Alignment procedure (for function adjustment)................................................... 30
5. Level 2 Disassembly /Assembly Circuit Board and Standard Parts
Replacement ...................................................................................................37
5.1. Exploded View ................................................................................................... 37
5.2. Disassembly /Assembly ..................................................................................... 38
5.3. Shielding Position............................................................................................... 47
5.4. Packing .............................................................................................................. 48
5.5. Block diagram .................................................................................................... 49
5.6. Trouble Shooting Guide ..................................................................................... 50
5.7. Circuit Operation Theory .................................................................................... 55
Appendix 1 – Screw List / Torque..................................................................64
Appendix 2-Physical Dimension Front View and Side view .......................66

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Abbreviations & Acronyms
1 About This Manual
This manual contains information about maintenance and service of BenQ products. Use this
manual to perform diagnostics tests, troubleshoot problems, and align the BenQ product.
1.1. Trademark
The following terms are trademarks of BenQ Corporation:
BenQ
Importance
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 “Safety Note”.

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2 Introduction
This section contains general service information, please read through carefully. It should be
stored for easy access place for quick reference.
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 Notice
1. Make sure your working environment is dry and clean, and meets all government safety
requirements.
2. Ensure that other persons are safe while you are servicing the product. DO NOT perform any
action that may cause a hazard to the customer or make the product unsafe.
3. Use proper safety devices to ensure your personal safety.
4. Always use approved tools and test equipment for servicing.
5. Never assume the product’s power is disconnected from the mains power supply. Check that
it is disconnected before opening the product’s cabinet.
6. Modules containing electrical components are sensitive to electrostatic discharge (ESD).
Follow ESD safety procedures while handling these parts.
7. Some products contain more than one battery. Do not disassemble any battery, or expose it to
high temperatures such as throwing into fire, or it may explode.
8. Refer to government requirements for battery recycling or disposal.
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.
2.4. General Descriptions
This Service Manual contains general information. There are 3 levels of service:
Level 1: Cosmetic / Appearance / Alignment Service
Level 2: Circuit Board or Standard Parts Replacement
Level 3: Component Repair to Circuit Boards
2.5. Related Service Information
BenQ Global Service Website: http://www.benq.com/support/
eSupport Website: http://bqpgsr.benq.corp.com/customize/asplogin.asp

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3 Product Overview
3.1. Specification
3.1.1 Introduction
G2220HD is defined 21.5’W LCD Monitor supports WXGA(1920x1080) resolution with DPMS
(Display Power Management System) and Senseye function. There are two different input types,
D-sub, DVI, of models. G2220HD adopts AUO panel, M215HW01 V0.
The features summary is shown as below,
*All panel spec. in C201 definition depends on the variance of panel source.
*All spec. of monitor need to warm up at least 1hr.
* To test the “Contrast Ratio” and “Luminance” functions, the color status must be “User preset”
mode.
* “Contrast Ratio”: Set “brightness” at 100, and “contrast” at 50.
* “Luminance”: Set “brightness” at 100, and “contrast” at 100.
Feature items Specifications Remark
Panel supplier & module name AUO M215HW01 V0 TN, Normally white
Screen diagonal 21.5W” 476.64(H) x268.11(V)
Display Format 1920(H) x 1080 (V) Panel Display information
Pixel Pitch 248.25 um x 248.25 um per one triad
Viewing Angle (@ Contrast Ratio >= 10)
R/L:85/85 degrees (typ)
and U/D: 80/80 degrees
(typ)
Analog interface with Scaling supported Yes
With 15-pin D-sub
connector
DVI interface with Scaling supported Yes
HDMI interface with Scaling supported No
Max resolution mode supported 1920 (H) x 1080 (V)@60Hz
Number of Display Colors supported 16.7 Millions RGB 6-bit + FRC
Contrast Ratio 1000:1 (typ.),600:1(min)
Test Condition: Se
t
Contrast at 50, Brightness
at 100, Color at Use
r
preset
Luminance 300 cd/m2(typ.),240 cd/m2
(min)
Test Condition: Se
t
contrast at 100, brightness
at 100 , color at Use
r
preset.
AC power input Yes 90-264 Volts, 47-63 Hz.
DC power input (with AC power adapter) No
DPMS supported Yes <1W
LED indicator for power status showed Yes Green/Amber/None
OSD for control & information supported Yes
Multi-language supported for OSD Yes 17 languages.
Buttons control supported Yes
Flywheel control supported No
Scaling function supported Yes
Auto adjustment function supported Yes “I-Key” function
DDC function supported (EDID ver. 1.3) Yes DDC2B
DDC-CI support version 1.1 or later Yes DDC-CI

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Audio speakers supported No
Audio Jack (input connector) supported No
Earphone Jack (input connector)
supported No
Microphone function supported No
Mechanical Tilt base design Yes From -5 to +23 degree
VESA wall mounting design Yes
Mechanical Rotate design No
Mechanical Lift base design No
Kensington compatible lock design Yes
3.1.2 Operational Specification
3.1.2.1 Power supply
Item Condition Spec OK N.A Remark
Input Voltage range Universal input full
range 90~264VAC /50~76Hz √
Input Current range 90 ~ 264VAC < 1.5 Arms √
Power Consumption Normal “On” operation <47 W √LED: Green
DPMS DPMS “Off” state < 1 W √LED: Amber
Inrush Current 110 VAC
220 VAC
< 30 A (peak)
< 60A (peak) √Cold-start
Earth Leakage Current 264 VAC/50Hz < 3.5 mA √
Hi-Pot
1. 1500VAC, 1 sec
2. Ground test: 30A,
1sec
Without damage
< 0.1 ohm √(on-line test) (in-lab test)
Power Line Transient IEC1000-4-4 1KV √
IEC1000-4-5 (Surge) Common: 2KV,
Differential: 1KV √
CCFL operation range 90 ~ 264VAC 3~8mA √Depends on panel
source
CCFL Frequency 90 ~ 264VAC 40KHz ~ 80KHz √Depends on panel
source
Power cord
Color: Black
Length: 1500 +/- 50
mm
√
3.1.2.2 Signal interface
Item Condition Spec OK N.A Remark
15-pin D-Sub
Color: Black
Length: 1500 +/- 30
mm
√
Signal Cable
24-pin DVI-D
Color: Black
Length: 2000 +/- 50
mm
√
15-pin D-sub
connector
See Note-1 √For 15-pin D-sub
Pin assignment
24-pin DVI-D
connector
See Note-2 √For 24-pin DVI-D

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19-pin HDMI
connector
See Note-3 √For 19-pin HDMI
Signal type Separate analog R/G/B √For 15-pin D-sub
Level 700 mV (peak to peak) √
Analog input
Impedance 75 Ohms +/- 1.5 Ohms √
Signal type
Separate H/V-sync
Composite H/V-sync
(Positive/Negative)
√
For 15-pin D-sub
Level
Logic High: 2.4V ~
5.5V
Logic Low: 0V ~ 0.5V
(TTL level)
√
Refer to VESA
VSIS Standard
V1R1
Impedance Minimum 2.2KΩ(pull
down) √10KΩfor application
Sync input
Sync Pulse Width
(SPW)
0.7µs < H-SPW
1H < V-SPW
√
Level 600mV for each
differential line
√
Digital input Impedance 50 Ohm TDR Scan
needed for DVI cable
and interface board
√
Note-1: The pin assignment of 15-pin D-sub connector is as below,
Pin Signal Assignment Pin Signal Assignment
1 Red video 9 PC5V (+5 volt power)
2 Green video 10 Sync Ground
3 Blue video 11 Ground
4 Ground 12 SDA
5 Cable Detected 13 H-Sync (or H+V)
6 Red Ground 14 V-sync
7 Green Ground 15 SCL
8 Blue Ground

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Note-2: The pin assignment of 24-pin DVI-D connector is as below,
Pin Signal Assignment Pin Signal Assignment
1 TMDS RX2- 13 Floating
2 TMDS RX2+ 14 +5V Power
3 TMDS Ground 15 Ground
4 Floating 16 Hot Plug Detect
5 Floating 17 TMDS RX0-
6 DDC Clock 18 TMDS RX0+
7 DDC Data 19 TMDS Ground
8 Floating 20 Floating
9 TMDS RX1- 21 Floating
10 TMDS RX1+ 22 TMDS Ground
11 TMDS Ground 23 TMDS Clock+
12 Floating 24 TMDS Clock-
3.1.2.3 Video performance
Item Condition Spec OK N.A Remark
Max. support Pixel rate 195 MHz/ Analog
165MHz / DVI √
Max. Resolution 1920x1080@60 √Both for analog and
digital inputs
Rise time + Fall time
<12 ns
(50% of minimum pixel
clock period)
√
1920 x 1080 @
60Hz
(max. support
timing)
Settling Time after
overshoot /undershoot
< 5% final full-scale
value √
Refer to VESA
VSIS Standard
V1R1
Overshoot/Undershoot
< 12% of step function
voltage level over the
full voltage range
√
Refer to VESA
VSIS Standard
V1R1
3.1.2.4 Scan range
Item Condition Spec OK N.A Remark
Horizontal 31-83 KHz √
Vertical 55-76 Hz √
3.1.2.5 Plug & Play DDC2B DDC-CI Support
Item Condition Spec OK N.A Remark
DDC channel type DDC2B √
EDID Version 1.3 √Refer to BenQ LS
EDID definition.
DDC-CI Version 1.1 or Later √
Refer to BenQ
DDCCI requirement
definition.

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3.1.2.6 Support Timings

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3.1.3 Operational & Functional Specification
3.1.3.1 Video performance
*All spec. of monitor need to warm up at least 1hr.
Item Condition Spec OK N.
A Remark
Resolution
Any input resolution
modes which are under
1920x1080
1920 x 1080 √
Contrast ratio 600(min),1000(typ) √
Test Condition:
Set Contrast at
50, Brightness
at 100, Color at
User preset.
Brightness At R/G/B saturated
condition 240 cd/m2(typ.),300(min) √
Test
Condition : Set
contrast at
100 ,
brightness at
100 , color at
User preset.
Response time Rising + Falling time On/off:5 ms
(typ.),8ms(max) √
Test
Equipment:
Westar TRD
100 or equal
level
equipment ;
At Contrast ratio = 10 R/L: 85/85 degrees (typ.)
70/70 degrees (min) √
Viewing angle
At Contrast ratio = 10 U/D: 80/80 degrees (typ.)
70/70 degress(min) √
CIE coordinate of White (0.313, 0.329) +/- (0.03,
0.03) √
Display colors 16.7 Millions colors √6 bit+FRC
Response time with AMA
Average response time
of gray level to gray
level
2ms(typ.), 2.9ms(max) √
Test Condition:
Set Contrast at
50, Brightness
at 90, Color at
User preset.
3.1.3.2 Brightness Adjustable Range
Item Condition Spec OK N.
A Remark
Brightness adjustable
range
At default contrast level
(saturate point) & Full-
white color pattern
(Max. brightness value –
Min. brightness value)
≧100 cd/㎡
√
3.1.3.3 Acoustical Noise
Item Condition Spec OK N.
A Remark
Acoustical Noise At 1 cm distance ≦28 dB/A √Refer to C326

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3.1.3.4 Environment
Item Condition Spec OK N.
A Remark
Operating 0 ~ +40 ℃√
Temperature Non-operating -20 ~ +60 ℃√
Operating 10 ~ 90% √Non-
condensing
Humidity
Non-operating 10 ~ 90% √Non-
condensing
Operating 0~3048m (10,000ft)
√Without
packing
Altitude
Non-operating 0~12,192m (40,000ft)
√With packing
3.1.3.5 Transportation
Item Condition Spec OK N.
A Remark
(1) Sine wave
5~200Hz 1.5G, 1
octave/min, 15 min dwell
on each resonant
frequency, all primary
axis, one sweep (30 min
minimum) per
orientation, total of 90+
min.
(2) Random
5 ~100 Hz, 0 dB/Oct.
0.015 g2/Hz
100 ~200 Hz, -6 dB/Oct.
200 Hz, 0.0038 g2/Hz
Equivalent to 1.47 Grms,
All primary axis, 20 min
per- orientation, total is
60 min.
(1) Vibration Package, Non-Operating
(3) Procedure:
Confirmed sample with
appearance and function
ready
before testing then
compare with after test
record as brightness,
uniformity and contrast
ratio. Perform random
vibration after sine-wave
vibration test.
√
(2) Unpackaged Vibration Unpackaged, Non-
Operating
Test Spectrum:
20 Hz 0.0185(g2/Hz)
200Hz 0.0185(g2/Hz)
Duration : 5 Minutes
Axis : 3 axis
( Horizontal and Vertical
axis ,Z axis)
√

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(3) Drop Package, Non-Operating
91 cm Height (MP stage)
(1 corner, 3 edges, 6
faces)
√
(4) Shock Wooden package, Non-
Operating
Waveform: half sine
Faces: 6 sides/ per
orientation
3 shocks.
Duration: <3ms
Velocity accelerate: 75g
√
3.1.3.6 Electrostatic Discharge Requirements
Item Condition Spec OK N.
A Remark
Electrostatic Discharge IEC801-2 standard Contact: 8KV
Air: 15KV √
3.1.3.7 EMC
Item Condition Spec OK N.
A Remark
Electric Band 1 < 10 V/m
Band 2 < 1 V/m √
TCO03
Magnetic Band 1 < 200nT
Band 2 < 25nT √
FCC part 15J class B
EMI
EN55022 class B
A
fter Mass production
under 1dBuv for constant
measure. Besides DNSF
and VCCI class-2 are
optional.
√
3.1.3.8 Reliability
Item Condition Spec OK N.
A Remark
MTBF Prediction Refer to MIL-217F > 60,000 Hours √Excluding
CCFL
CCFL Life time At 25±2℃, under 7.0mA 40,000 Hours (min) √See Note-4
Note-4: CCFL lifetime is determined as the time at which brightness of lamp is 50%. The typical
lifetime of CCFL is on the condition at 7.0mA lamp current.
3.1.3.9 Audio performance
Item Condition Spec OK N.
A Remark
Preamp + Power amp
(1)Output power 1 Wrms/CH @ 1KHz √
(2)THD (@ 1W) <1%
√
(3)S/N ratio >40dB
√
Speaker Driver
(1)Nominal impedance 4 ohm √
(2)Rated input power 1 W/CH √
(3)Frequency response 180~20KHz SPL-10dB √
(4)Output sound pressure
level
84 ± 3 dB (1W 0.5M) √

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(5)Dimension of box 284x60x27mm2
√
Audio Control
(1)Volume range 0 ~100 levels √
(2)Mute On/Off
√
3.1.4 LCD Characteristics
3.1.4.1 The Physical definition & Technology summary of LCD panel
Item Condition Spec OK N.A Remark
LCD Panel Supplier AUO √
Panel type of Supplier M215HW01 V0 √
Display area Unit=mm 476.64(H) x 268.11(V) √
Physical Size Unit=mm 495.6(W) x 292.2(H) x 16.35(D) √
Weight Unit=gram 2100(typ.) √
Technology TN type √
Pixel pitch Unit=um 248.25 x 248.25(Typ.) √Per one triad
Pixel arrangement R/G/B vertical stripe √
Display mode Normally White √
Support color 16.7Millions colors √6 bit + HiFRC
3.1.4.2 Optical characteristics of LCD panel
AUO M190EG02 V.4
Item Unit Conditions Min. Typ. Max. Remark
[degree]
[degree]
Horizontal
(Right)
CR = 10 (Left)
70
70
85
85
-
-
Viewing Angle
[degree]
[degree]
Vertical (Up)
CR = 10 (Down)
70
70
80
80
-
-
Contrast ratio Normal Direction 600 1000
[msec] Rising Time - 3.8 5.5
[msec] Falling Time - 1.2 2.5
Response Time
[msec] Rising + Falling - 5 8
Red x 0.618 0.648 0.678
Red y 0.309 0.339 0.369
Green x 0.252 0.282 0.312
Green y 0.573 0.603 0.633
Blue x 0.113 0.143 0.173
Color / Chromaticity
Coordinates (CIE)
Blue y 0.04 0.07 0.10
White x 0.283 0.313 0.343Color Coordinates (CIE)
White
White y 0.299 0.329 0.359
Luminance Uniformity [%] 9 points
measurement 75 80
White Luminance @ CCFL
6.0mA (center)
[cd/m2] 240 300 -
Crosstalk (in 75Hz) [%] 1.5
The test methods for the above items’ definition, please refer to the relative panel specification.

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3.1.5 User Controls
3.1.5.1 User’s hardware control definition
Item Condition Spec OK NA Remark
Power button √
Enter button √
Right/Inc. button √
Left/Dec. button √
Menu button(Exit button) √
Mode button √
Input Select button √
iKey button √
Mute button √
3.1.5.2 OSD control function definition
Item Condition Spec OK NA Remark
Auto Adjust Auto-Geometry √
Brightness √
Contrast √
Horizontal Position √
Vertical Position √
Pixel Clock √
Phase √
Color
Bluish
Reddish
Normal
User: Separate R/G/B
adjustment
Reset Color
√
OSD Position OSD Horizontal position
OSD Vertical position √
OSD Time From 5 sec to 30 sec √
OSD Lock √
Language 17 languages √
Recall Recall All √
Mode Standard / Dynamics /
Movie / Photo/sRGB √
Input Select D-sub
DVI √
Sharpness √
Display Information For input timing √
Volume
√
Mute
√
Hot key for Brightness √
Hot key for Contrast √
Hot key for Volume
√
Hot key for Input Select √
Hot key for Mode
√
The detailed firmware functions’ specification, please refer to C212 S/W spec. document.

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3.1.6 Mechanical Characteristics
3.1.6.1 Dimension
Item Condition Spec OK N.A Remark
Bezel opening 411.76*232.36 mm √
Monitor without Stand W x H x D mm 443.68*281.68*61.98mm √
Monitor with Stand W x H x D mm 443.68*342.34*61.98mm √
Carton Box (outside) L x W x H mm 504*417*134 mm √
Tilt and Swivel range Tilt: -3.5 ~ +21.5 degree
Swivel: 0 degree √
3.1.6.2 Weight
Item Condition Spec OK N.A Remark
Monitor (Net) 3.2Kg √
Monitor with packing
(Gross)
5.6Kg √
3.1.6.3 Plastic
Item Condition Spec OK N.A Remark
Flammability >ABS<,94-HB
√
Heat deflection To ABS 65 ℃√
UV stability ABS Delta E < 8.0 √
Resin
MPRII: ABS
(
SD0150/GP35/D350/PA
7
57)
√
Texture MT-11010
√
Color BCS-Y7015A
√
3.1.6.4 Carton
Item Condition Spec OK N.A Remark
Color Kraft √
Material C Flute √
Compression strength 360 KGF √
Burst Strength 16 KGF/cm2√
Stacked quantity 16 Layers √

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3.1.7 Pallet & Shipment
3.1.7.1 Container Specification
Stowing Type Container
Quantity of products
(sets)
(Every container)
Quantity of Products
(sets)
(Every Pallet)
Quantity of pallet
(sets)
(Every Container)
20' 950 Pallet A: 80 Pallet A: 3
Pallet B: 90 Pallet B: 19
40' 1950 Pallet A: 80 Pallet A: 5
With pallet
Pallet B: 90
Pallet C: 50
Pallet B: 5
Pallet C: 2
20' X X
X X
40' X X
Without pallet
X X
3.1.7.2 Carton Specification
Product:
Net Weight (Kg) Gross Weight (Kg) Dimension w/o Base
W*H*D (mm)
Dimension w/ Base
W*H*D (mm)
3.2Kg 5.6Kg 443.68*281.68*61.98mm 443.68*342.34*61.98mm
Package:
Carton Interior Dimension (mm)
L*W*H
Carton External Dimension (mm)
L*W*H
504*417*134 mm 494*395*124 mm
3.1.8 Certification
Item Condition Spec OK N.A Remark
Green design API Doc. 715-C49 √ISO14000
Requirement
Blue Angel German Standard √
E-2000 Switzerland √
EPA USA Standard
√
TCO’99
√
TCO’03 √
Environment
Green Mark √
Microsoft Windows PC98/99 √
DPMS VESA √
DDC 2B Version 1.3 √
PC-Monitor
USB External
√

- 17 -
UL (USA) UL60950 3rd edition √
CSA (Canada) CAN/CSA-C22.2 No.
60950 √
Nordic / D.N.S.F EN60950 √
FIMKO EN60950
√
CE Mark 73/23/EEC √
CB IEC60950 √
CB EN60950 √
TUV/GS EN60950 /
EK1-ITB 2000:2003 √
CCC (China) CB4943 √
GOST EN60950
√
Safety
SASO IEC60950
√
CE Mark 89/336/EEC √
FCC (USA) FCC Part 15 B √
EN55022 Class B √
CISPR 22 Class B √
VCCI (Japan) VCCI Class B √
BSMI (Taiwan) CNS 13438 √
EMC
C-Tick (Australia) AS/ NZS CISPR22 √
DHHS (21 CFR) USA X- Ray Standard √
DNHW
√
X- Ray
Requirement PTB German X- Ray
standard √
TUV / Ergo √
ISO 13406-2 √
Ergonomics
prEN50279
√

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3.2. Customer Acceptance
3.2.1. SCOPE
This document establishes the general workmanship standards and functional Acceptance
criteria for LCD color monitor model G2200HD Produced by BenQ Corporation.
3.2.2. PURPOSE
The purpose of this publication is to define a procedure for inspection of the LCD
monitor by means of a customer acceptance test, the method of evaluation of defects
and rules for specifying acceptance levels.
3.2.3. APPLICATION
The "Customer Acceptance Criteria" is applicable to the inspection of the LCD monitor,
completely packed and ready for dispatch to customers. Unless otherwise specified, the
customer acceptance inspection should be conducted at manufacturer's site.
3.2.4. DEFINITION
The "Customer Acceptance Criteria" is the document defining the process of examining,
testing or otherwise comparing the product with a given set of specified technical,
esthetic and workmanship requirements leading to an evaluation of the "degree of
fitness for use", including possible personal injury or property damage for the user of
the product.
3.2.5. CLASSIFICATION OF DEFECTS
The defects are grouped into the following classes:
Critical defect
A critical defect is a defect that judgment and experience indicate is likely to result in
hazardous or unsafe conditions for individuals using, maintaining or depending upon the
product.
Major defect
A major defect is a defect, other than critical, that is likely to result in failure, or to reduce
materially the usability of the product for its intended purpose.
Minor defect
A minor defect is a defect that is not likely to reduce materially the usability of the
product for its intended purpose, or is a departure from established standards having
little bearing on the effective use of operation of the product.

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3.2.6. CLASSIFICATION OF DEFECTIVES
A defective is a product which contains one or more defects. The defective will be
classified into following classes.
Critical defective
A critical defective contains one or more critical and may also contain major and/or minor
defects.
Major defective
A major defective contains one or more defects and may also contain minor defects but
contains no critical defect.
Minor defective
A minor defective contains one or more minor defects but contains no critical and major
defects.
3.2.7. EXPRESSION OF DEFECTIVES
Number of defects
Percent of defects = ------------------------------------------ X 100%
Number of products inspected
3.2.8. INSPECTION STANDARD
Unless otherwise specified, the inspection standard will be defined by MIL- STD-
105E(ISO-2859), SINGLE SAMPLING PLAN. level II is in use all the time , inspection
levels are normal ,reduce and tighten .
Acceptance Quality Level
When a critical defect is found, this must be reported immediately upon detection, the lot
or batch shall be rejected and further shipments shall be held up pending instructions
from the responsible person in relevant organization.
Major Defective: 0.4 AQL
Minor Defective: 1.50 AQL
3.2.9. GENERAL RULES
The inspection must be carried out by trained inspectors having good knowledge of the
meaning of "fitness for use". The inspection must be based upon the documents
concerning the completely assembled and packed product when more defects appear
with the same cause only the most serious defect must be taken into account. Defects
found in accessories packed with the product as connecting cables, plugs, adapters and
the like, and being inspected as a part of the complete product, must be included in the
evaluation.
The evaluation must be within the limits of the product specification and, for not specified
characteristics, be related to the design model, limit samples or judgment of a jury of
experts. Faults must be demonstrable.

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3.2.10. TEST CONDITIONS
Unless otherwise prescribed, the test conditions are as follows:
. Nominal mains voltage
Temperature: +5~+35℃
. Warm up time : 30minutes minimum .
. Visual inspection shall be down with the distance from eyes to the sample 35-50 cm .
. Display mode: Primary mode 1280*1024
3.2.11. TEST EQUIPMENTS
1. PC with display adapter or other specific
display adapter which is agreed upon by both parties
2. Test program by BenQ
3. Ruler
4. Power saving test tool
5. Minolta color analyzer ( CA-110 or BM – 7 )
3.2.12. VISUAL INSPECTION CRITERIA
1. PACKING
2. ACCESSORIES
3. APPEARANCE
4. AC POWER AND SIGNAL CABLE
5. INTERIOR OF THE PRODUCT
No Description Class
1 Packing
1.1 Wrong packing material Major
1.2 Carton damaged(over 6cm dia).wet, badly taped or stapled, product will not arrive
in good condition at customer Minor
1.3 Carton damaged(3cm to 6cm dia), badly taped or stapled , product will arrive in
good condition at customer Minor
1.4 Wrong marking of trade mark Major
1.5 Wrong marking of model number Major
1.6 Wrong serial # marking on carton Major
1.7 Product wrongly placed in box ( upside down ) Major
1.8 Broken polyfoam or PU foam Major
1.9 Broken packing bag Major
1.10 Wrong size or poor printing for artwork/character Major
1.11 Bar-code wrong, missing, or damaged Major
1.12 Label on box missing or damaged Major
1.13 Strange object in the box Major
1.14 Unit not corresponding to model stated on external label Major
1.15 Superficial breaking 5 ~ 10 cm dia Minor
2 Accessories
2.1 Missing accessory parts Major
2.2 Wrong Accessory parts Major
3 Appearance of product
3.1 Incorrect color of cabinet Major
3.2 Incorrect color of tilt/swivel base Major
3.3 Wrong logo or name plate Major