BenQ GW2760HS User manual

- 1 -
Product Service Manual –Level II
Service Manual for BenQ:
GW2760HS
P/N: 9H.L9NLB.QB*
Applicable for All Regions
Version: 001
Date:2012/12/10
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 (Dec., 2012)
© Copyright BenQ Corporation 2012. All Right Reserved.

- 2 -
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........................................................................................ 20
4. Level 1 Cosmetic / Appearance / Alignment Service ..............................26
4.1. Software / Firmware Upgrade Process .............................................................. 26
4.2. DDC (EDID) Upgrade Process........................................................................... 31
4.3. Alignment procedure (for function adjustment)................................................... 37
5. Level 2 Disassembly /Assembly Circuit Board and Standard Parts
Replacement..................................................................................................41
5.1. Exploded View ................................................................................................... 41
5.2. Disassembly /Assembly..................................................................................... 42
5.3. Packing.............................................................................................................. 48
5.4. Block diagram .................................................................................................... 49
5.5. Trouble Shooting Guide ..................................................................................... 50
5.6. Circuit Operation Theory.................................................................................... 53
Appendix 1 –Screw List / Torque.................................................................55
Appendix 2-Physical Dimension Front View and Side view.......................58

- 3 -
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”.

- 4 -
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://esupport.benq.com/v2

- 5 -
3 Product Overview
3.1. Specification
Introduction
This specification describes GW2760HS, which is a 24” Green-Product with VGA+DVI+HDMI
interface and earphone output color TFT LCD monitor. The monitor supports maximum resolution
up to 1920x1080 with analog/digital inputs.
The features summary is shown as below,
* 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.
* 1. “Contrast Ratio”: Set “brightness” at 100, and “contrast” at 50.
* 2. “Luminance”: Set “brightness” at 100, and “contrast” at 100.
Feature items
Specifications
Remark
Panel supplier & module name
AUO M270HVN02.0 PS
VA, LED backlight
Screen diagonal
27”
597.6(H)x336.15(V)
Display Format
1920 (H) x 1080 (V)
Panel Display information
Pixel Pitch
0.31125 mm x 0.31125 mm
per one triad
Color Gamut
69%
Viewing Angle (@ Contrast Ratio >= 10)
R/L: 178 degrees (typ)
U/D: 178 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
Yes
Video interface with Scaling supported
No
Max resolution mode supported
1920x1080@60Hz
Number of Display Colors supported
16.7 millions
RGB 8-bit
Contrast Ratio
3000:1 (typ.)
Test Condition:
Contrast=50,
Brightness=100,
Color=User mode
Luminance
300 cd/m2(typ.)
Test Condition:
Contrast=100,
Brightness=100,
Color=User mode
Color Temperature
(1) Bluish mode:
(x,y)=
(0.283, 0.297)+/-(0.02, 0.02)
(2) Reddish mode:
(x,y)=
(0.326, 0.342)+/-(0.02, 0.02)

- 6 -
(3) 6500K mode :
(x,y)=
(0.313, 0.329)+/-(0.02, 0.02)
(4) sRGB:
(x,y)=
(0.313, 0.329)+/-(0.015, 0.015)
AC power input
Yes
90-264 Volts, 47-63 Hz.
DC power input (with AC power adapter)
No
DPMS supported(Power Saving)
Yes
<0.3W
Power Off Mode
Yes
<0.3W
LED indicator for power status showed
Yes
Green/Amber
OSD for control & information supported
Yes
Multi-language supported for OSD
Yes
17 languages
Buttons control supported
Yes
6 buttons including 1
monitor power on/off
control button.
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
Audio speakers supported
Yes
1Wx2
Audio Jack (input connector) supported
Yes
Earphone Jack (input connector)
supported
Yes
Microphone function supported
No
Mechanical Tilt base design
Yes
From -5 to +15 degree
VESA wall mounting design
Yes
Mechanical Rotate design
No
Mechanical Lift base design
No
Kensington compatible lock design
Yes
Operational Specification
3.1.1.1 Power supply
Item
Condition
Spec
OK
N.A
Remark
Input Voltage range
Universal input full
range
90~264VAC /47~63Hz

Input Current range
90 ~ 264VAC
< 1.2 Arms

Power Consumption
Normal “On” operation
< 48W

LED: Green
DPMS
DPMS “Off” state
DPMS “Sleep” state
< 0.3 W
< 0.3 W

LED: Off
LED: Amber
Inrush Current
110 VAC
220 VAC
<40 A (peak)
<80 A (peak)

Cold-start
Earth Leakage Current
264 VAC/50Hz
< 3.5 mA

Hi-Pot
1500VAC, 1 sec
Without damage

(on-line test)
Ground test
Ground test: 30A, 1sec
< 0.1 ohm

Power Line Transient
IEC1000-4-4
1KV


- 7 -
IEC1000-4-5 (Surge)
Common: 2KV,
Differential: 1KV

LED operation range
90 ~ 264VAC
110mA (Typ.)

Depends on panel
source (Operation
with fixed driving
current)
CCFL Frequency
90 ~ 264VAC
40KHz ~ 80KHz

Depends on panel
source
Power cord
Color: Black
Length: 1500 +/- 50
mm

3.1.1.2 Signal interface
Item
Condition
Spec
OK
N.A
Remark
Signal Cable
15-pin D-Sub
Color: Black
Length: 1500 +/- 30
mm

24-pin DVI-D
Color: Black
Length: 1500 +/- 50
mm

19-pin HDMI

Pin assignment
15-pin D-sub
connector
See Note-1

For 15-pin D-sub
24-pin DVI-D
connector
See Note-2

For 24-pin DVI-D
HDMI
See Note-3

For 19-pin HDMI
Video input
Signal type
Separate analog R/G/B

For 15-pin D-sub
Level
700 mV (peak to peak)

Impedance
75 Ohms +/- 1.5 Ohms

Sync input
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)

10KΩ for
application
Sync Pulse Width
(SPW)
0.7μs < H-SPW
1H < V-SPW


- 8 -
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
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-

- 9 -
Note-3: The pin assignment of 19-pin HDMI connector is as below

- 10 -
3.1.1.3 Input Video Signal performance Requirement (for VGA)
Item
Condition
Spec
OK
N.A
Remark
Max. support Pixel rate
Analog 205 MHz

Max. Resolution
1920 x 1080

Rise time + Fall time
<2.439 ns
(50% of minimum pixel
clock period)

(1/205MHz)*50% =
2.439ns
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
3.1.1.4 Scan range
Item
Condition
Spec
OK
N.A
Remark
Horizontal
30 ~ 83 KHz

Vertical
50 ~ 76 Hz

3.1.1.5 Plug & Play DDC2B DDC-CI Support
Item
Condition
Spec
OK
N.A
Remark
DDC channel type
DDC2B

EDID
Version 1.3

Refer to S/W spec.
document to see
the detailed EDID
data definition.
DDC-CI
Version 1.1 or Later

Refer to S/W spec

- 11 -
3.1.1.6 Support Timing
Resolution
(active dot)
Resolution
(total dot)
Horizontal
Frequency
(KHz)
Vertical
Frequency
(Hz)
Nominal
Pixel
Clock (MHz)
P
640x480@66
640x480
35.00
66.67
30.24
P
640x480@60
640x480
31.47
59.94
25.17
P
800x600@56
800x600
35.16
56.25
36.00
P
800x600@60
800x600
37.88
60.32
40.00
P
1024x576@60
1024x576
35.82
60
46.966
P
1024x600@60
1024x600
37.32
60
48.964
P
1024x768@60
1024x768
48.36
60.00
65.00
P
1152x720@60
1152x720
44.86
60
66.75
P
1152x900@66
1152x900
61.80
65.95
92.94
P
1280x720@60
1280x720
45.00
59.94
74.25
P
1280x720@60
1280x720
44.77
59.86
74.50
P
1280x768@60
1280x768-R
47.40
60.00
68.25
P
1280x800@60
1280x800
49.702
59.81
83.50
P
1280x960@60
1280x960
60.00
60.00
108.00
P
1280x1024@60
1280x1024
63.98
60.02
108.00
P
1360x768@60
1360x768
47.71
60.01
85.50
P
1366x768@60
1366x768
47.71
59.79
85.50
P
1440x900@60
1440x900-R
55.496
59.901
88.75
P
1440x900@60
1440x900
55.935
59.887
106.5
P
1600X900@60
1600X900-R
60
60
108
P
1600x1000@60
1600x1000-R
61.648
59.910
108.5
P
1600x1200@60
1600x1200
75.00
60.00
162.00
P
1680x1050@60
1680x1050
65.29
59.95
146.25
P
1920x1080@60
1920x1080-R
66.587
59.934
138.5
P
1920x1080@60
1920x1080
67.158
59.963
173
P
1920x1080@60
1920x1080
67.5
60
148.5

- 12 -
Operational & Functional Specification
3.1.1.7 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
3000:1 (typ.)

Test Condition: Set
Contrast at 50,
Brightness at 100, and
Color at User preset.
Brightness
At R/G/B saturated
condition
300 cd/m2(Typ.)

Test Condition: Set
contrast at 100,
brightness at 100, and
color at User preset.
Response time
Rising + Falling time
12 ms (typ.)

Test Equipment:
Westar TRD 100 or
equal level equipment ;
Viewing angle
At Contrast ratio = 10
R/L: 178 degrees (typ.)

At Contrast ratio = 10
U/D: 178 degrees (typ.)

Display colors
16.7 Millions colors

RGB 8-bit
Color temperature specification:
Color mode
Color temperature
x
Y
Normal
6500k
0.313±0.020
0.329±0.020
Min 220 cd/m2
Bluish
9300k
0.283±0.020
0.297±0.020
Min 200 cd/m2
Reddish
5800k
0.326±0.020
0.342±0.020
Min 220 cd/m2
User Mode
Panel default color temp.
Min 250 cd/m2
sRGB
6500k (Gamma=2.2±0.2)
0.313±0.015
0.329±0.015
200 ± 20 cd/m2
3.1.1.8 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/㎡

3.1.1.9 Acoustical Noise
Item
Condition
Spec
OK
N.A
Remark
Acoustical Noise
At 4 cm distance
& “Audio” function disabled
≦28 dB/A


- 13 -
3.1.1.10 Environment
Item
Condition
Spec
OK
N.A
Remark
Temperature
Operating
0 ~ +40 ℃

Non-operating
-20 ~ +60 ℃

Humidity
Operating
10 ~ 90%

Non-
condensing
Non-operating
10 ~60%

Non-
condensing
Altitude
Operating
0~3048m (10,000ft)

Without
packing
Non-operating
0~12,192m (40,000ft)

With packing
3.1.1.11 Transportation
Item
Condition
Spec
OK
N.A
Remark
(1) Vibration
Package,
Non-Operating
(1)

* Acceleration: 1.15G;
(1)The product should be packaged
and non-operating.
(2) The duration of endurance is 30
minutes per axis (X, Y and Z)
(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)

(3) Drop
Package, Non-
Operating
76 cm Height (MP stage)
(1 corner, 3 edges, 6 faces)


- 14 -
3.1.1.12 Electrostatic Discharge Requirements
Item
Condition
Spec
OK
N.A
Remark
Electrostatic Discharge
IEC801-2 standard
Contact: 8KV
Air: 15KV

3.1.1.13 EMC
Item
Condition
Spec
OK
N.A
Remark
TCO 6.0
Electric
Band 1 < 10 V/m
Band 2 < 1 V/m

Magnetic
Band 1 < 200nT
Band 2 < 25nT

EMI
FCC part 15J class B
After Mass production
under 1dBuv for constant
measure. Besides DNSF
and VCCI class-2 are
optional.

EN55022 class B
3.1.1.14 Reliability
Item
Condition
Spec
OK
N.A
Remark
MTBF Prediction
Refer to Telcordia
(Bellcore)
> 60,000 Hours

Excluding
backlight
Backlight Life time
At 25±2℃, under 7.5mA
30,000 Hours (min)

See Note-4
Note-4: Backlight life time is defined as the time when brightness of backlight become 50% or less
than its original value at the condition of typical backlight operation current (for CCFL backlight, it’s
CCFL operation current; for LED backlight, it’s LED forward (/operation) current).
LCD Characteristics
3.1.1.15 The Physical definition & Technology summary of LED panel
Item
Condition
Spec
OK
N.A
Remark
LCD Panel Supplier
AUO

Panel type of Supplier
M270HVN02.0 PS

Screen Diagonal
(27”)

Display area
Unit=mm
597.6(H) x 336.15(V)

Physical Size
Unit=mm
613.6(H) x356.85(V) x 10.0(D)

Weight
Unit=gram
2180

Technology
VA type

Pixel pitch
Unit=mm
0.31125(H) x 0.31125 (W)

Per one triad
Pixel arrangement
R/G/B vertical island

Display mode
Normally Black

Support color
16.7 Millions colors

RGB 8-bit

- 15 -
3.1.1.16 Optical characteristics of LED panel
AUO M270HVN02.0 PS
Item
Unit
Conditions
Min.
Typ.
Max.
Remark
Viewing Angle
[degree]
Horizontal
CR = 10
(Right/Left)
150
178
-
-
[degree]
Vertical
CR = 10
(Up/Down)
150
178
-
-
Contrast ratio
Normal Direction
1800
3000
Response Time
[msec]
Rising Time
-
7
[msec]
Falling Time
-
5
[msec]
Rising + Falling
-
12
Color / Chromaticity
Coordinates (CIE)
Red x
0.615
0.645
0.675
Red y
0.300
0.330
0.360
Green x
0.285
0.315
0.345
Green y
0.590
0.620
0.650
Blue x
0.124
0.154
0.184
Blue y
0.034
0.064
0.094
Color Coordinates (CIE)
White
White x
0.283
0.313
0.343
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 60Hz)
[%]
1.5
60Hz
* The test methods for the above items’ definition please refer to the relative panel specification.
User Controls
3.1.1.17 User’s hardware control definition
Item
Condition
Spec
OK
N.A
Remark
Power button

Enter button

Up/Inc. button

Down/Dec. button

Menu button

Mode button

Input Select button

Custom key
iKey button

Custom key
Volume button

Custom key
3.1.1.18 OSD control function definition
Item
Condition
Spec
OK
N.A
Remark
Auto Adjust
Auto-Geometry

Brightness

Contrast

Horizontal Position

Vertical Position


- 16 -
Pixel Clock

Phase

Color
Bluish
Reddish
Normal
sRGB
Senseye
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/sRGB /Movie/
Photo/Game/Eco/Readin
g/User

Input Select

Sharpness

Gamma
5 types

Color Format
RGB/YUV

HDMI RGB PC Range
RGB(0~255)
RGB(16~235)

HDMI input
signal only.
Display Information
For input timing

Volume
0-100

.
Mute
On/Off

Hot key for Picture mode

Hot key for Brightness

Hot key for Contrast

Hot key for Volume

1A1D1H
Hot key for Input Select

Hot key for Mode

Mechanical Characteristics
3.1.1.19 Dimension
Item
Condition
Spec
OK
N.A
Remark
Bezel opening
601.6*340.15

Monitor without Stand
W x H x D mm
622.6*367.05*50.72

Monitor with Stand
W x H x D mm
622.6*472.08*191.18

Carton Box (outside)
L x W x H mm
702*131*446(WW / EU: C FLUTE)
704*133*450( JP: BE FLUTE)

Tilt and Swivel range
Tilt: -5°~+15°
Swivel: NA


- 17 -
3.1.1.20 Weight
Item
Condition
Spec
OK
N.A
Remark
Monitor (Net)
4.496Kg

Monitor with packing
(Gross)
5.9Kg

3.1.1.21 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

Texture
BTN/RC: MT-11015
Lens: Glossy 95
BZL/CLMN/Base: Polish
#8000

Color
DB59A

3.1.1.22 Carton
Item
Condition
Spec
OK
N.A
Remark
Color
Brown

Material
WW / EU: C FLUTE
JP: BE FLUTE

Compression strength
250

Burst Strength
16

Stacked quantity
WW 20’:626 / 40’:1282
JP 20’:616 / 40’:1232
EU 20’:500 / 40’:1050


- 18 -
Pallet & Shipment
3.1.1.23 Container Specification
Stowing Type
Container
Quantity of products
(sets)
(Every container)
Quantity of Products
(sets)
(Every Pallet)
Quantity of pallet
(sets)
(Every Container)
With pallet
2
20’
626(WW)
500(JP）
616(EU)
Pallet A:64
Pallet B:80
Pallet C:70
Pallet A:64
Pallet B:90
Pallet A:50
Pallet A: 4
Pallet B: 2
Pallet C: 3
Pallet A: 4
Pallet B: 4
Pallet A:10
40'
1282(WW)
1050(JP)
1232(EU)
Pallet A:64
Pallet B:80
Pallet C:70
Pallet A:64
Pallet B:90
Pallet A:50
Pallet A: 8
Pallet B: 7
Pallet C: 3
Pallet A: 8
Pallet B: 8
Pallet A:21
Without pallet
20'
X
X
X
X
X
40'
X
X
X
X
X
3.1.1.24 Carton Specification
Product:
Net Weight (Kg)
Gross Weight (Kg)
Dimension w/o Stand
W*H*D (mm)
Dimension w Stand
W*H*D (mm)
4.496Kg
5.9Kg
622.6*367.05*50.72
622.6*472.08*191.18
Package:
Carton Interior Dimension (mm)
L*W*H
Carton External Dimension (mm)
L*W*H
692*121*430
702*131*446(WW: C FLUTE)
704*133*450(JP: BE FLUTE)

- 19 -
3.1.2 Certification

- 20 -
3.2. Customer Acceptance
3.2.1 SCOPE
This document establishes the general workmanship standards and functional
acceptance criteria for LCD color monitor model GW2760HS Produced by BenQ Peripherals,
Inc.
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.
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: