BENQ GL2460, GL2460HM SERVCIE MANUAL

Product Service Manual – Level II

Service Manual for BenQ: GL2460 GL2460HM

P/N: 9H.LA6LB.QPx P/N: 9H.LA7LB.QBx Applicable for All Regions

Version: 001

Date:2012/11/19

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.

- 1 -

Content Index

Abbreviations & Acronyms ............................................................................. 3

1 About This Manual ....................................................................................... 3

1.1. Trademark ............................................................................................................ 3

2 Introduction .................................................................................................. 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

3 Product Overview ........................................................................................ 5

3.1. Specification ......................................................................................................... 5

4. Level 1 Cosmetic / Appearance / Alignment Service .............................. 27

4.1. Software / Firmware Upgrade Process .............................................................. 27

4.2. Alignment procedure (for function adjustment) ................................................... 38

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 ..................................................................................... 51

5.6. Circuit operation theory: ..................................................................................... 55

Appendix 1 – Screw List / Torque ................................................................. 58

Appendix 2-Physical Dimension Front View and Side view ....................... 61

- 2 -

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”.

- 3 -

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

- 4 -

3 Product Overview

Feature items

Specifications

Remark

Panel supplier & module name

AUO M240HW01 VD

TN, LED backlight

Screen diagonal

24”

531.36(H)x298.89(V)

Display Format

1920 (H) x 1080 (V)

Panel Display information

Pixel Pitch

0.27675 mm x 0.27675 mm

per one triad

Color Gamut

69%

Viewing Angle (@ Contrast Ratio >= 10)

R/L:170 degrees (typ) U/D: 160 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

Only for GL2460HM

Video interface with Scaling supported

No Max resolution mode supported

1920x1080@60Hz

Number of Display Colors supported

16.7 millions

6 bit+Hi_FRC

Contrast Ratio

1000:1 (typ.)

Test Condition: Contrast=50, Brightness=100, Color=User mode

Luminance

250 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)

3.1. Specification

Introduction

This specification describes GL2460 which is a 24” Green-Product with VGA+DVI and GL2460HM 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.

- 5 -

(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

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 Only for GL2460HM

Audio Jack (input connector) supported

Yes

Only for GL2460HM

Earphone Jack (input connector) supported

Yes

Only for GL2460HM

Microphone function supported

No Mechanical Tilt base design

Yes

From -5 to +20 degree

VESA wall mounting design

Yes

Mechanical Rotate design

No Mechanical Lift base design

No

Kensington compatible lock design

Yes

Item

Condition

Spec

OK

N.A

Remark

Input Voltage range

Universal input full range

90~264VAC /47~63Hz



Input Current range

90 ~ 264VAC

< 1.5 Arms



Power Consumption

Normal “On” operation

<35W



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



Operational Specification

3.1.7.1 Power supply

- 6 -

IEC1000-4-5 (Surge)

Common: 2KV, Differential: 1KV



LED operation range

90 ~ 264VAC

60mA (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



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



Only for

GL2460HM

Pin assignment

15-pin D-sub connector

See Note-1



24-pin DVI-D connector

See Note-2



HDMI

See Note-3



Only for GL2460HM

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



3.1.7.2 Signal interface

- 7 -

Note-1: The pin assignment of 15-pin D-sub connector is as below,

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

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-

Note-2: The pin assignment of 24-pin DVI-D connector is as below,

- 8 -

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

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

3.1.7.3 Input Video performance Requirement (for VGA)

- 9 -

Item

Condition

Spec

OK

N.A

Remark

Horizontal

30 ~ 83 KHz



Vertical

50 ~ 76 Hz



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

3.1.7.4 Scan range

3.1.7.5 Plug & Play DDC2B DDC-CI Support

3.1.7.6 Support Timings

- 10 -

Operational & Functional Specification

Item

Condition

Spec

OK

N.A

Remark

Resolution

Any input resolution modes which are under 1920x1080

1920 x 1080



Contrast ratio

1000:1 (typ.)



Test Condition: Set Contrast at 50, Brightness at 100, and Color at User preset.

Brightness

At R/G/B saturated condition

250 cd/m2(Typ.)



Test Condition: Set contrast at 100, brightness at 100, and color at User preset.

Response time

Rising + Falling time

5 ms (typ.)



Test Equipment: Westar TRD 100 or equal level equipment ;

Viewing angle At Contrast ratio = 10

R/L: 170 degrees (typ.)



At Contrast ratio = 10

U/D: 160 degrees (typ.)



Display colors

16.7 Millions colors



6 bit+Hi_FRC

Color mode

Color temperature

x Y

Normal

6500k

0.313±0.020

0.329±0.020

Min 180cd/m2

Bluish

9300k

0.283±0.020

0.297±0.020

Min 160 cd/m2

Reddish

5800k

0.326±0.020

0.342±0.020

Min 180 cd/m2

User Mode

Panel default color temp.

Min 200 cd/m2

sRGB

6500k (Gamma=2.2±0.2)

0.313±0.015

0.329±0.015

200 ± 20 cd/m2

Color mode

Color temperature

x Y

Reading

4700K

0.3575±0.015

0.3862±0.015

130 ± 10 cd/m2

3.1.7.7 Video performance *All spec. of monitor need to warm up at least 1hr.

Color temperature specification:

Reading mode

- 11 -

Item

Condition

Spec

OK

N.A

Remark

Brightness adjustable range

At default contrast level (saturate point) & Fullwhite color pattern

(Max. backlight value – Min. backlight value) ≧ 100 cd/㎡



Item

Condition

Spec

OK

N.A

Remark

Acoustical Noise

At 4 cm distance

& “Audio” function

disabled

≦ 28 dB/A



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

Item

Condition

Spec

OK

N.A

Remark

(1) Vibration

Package, NonOperating

(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, NonOperating

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)



3.1.7.8 Brightness Adjustable Range

3.1.7.9 Acoustical Noise

3.1.7.10 Environment

3.1.7.11 Transportation

- 12 -

(3) Drop

Package, NonOperating

76 cm Height (MP stage) (1 corner, 3 edges, 6 faces)



Item

Condition

Spec

OK

N.A

Remark

Electrostatic Discharge

IEC801-2 standard

Contact: 8KV Air: 15KV



Item

Condition

Spec

OK

N.A

Remark

TCO6.0

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

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

Item

Condition

Spec

OK

N.A

Remark

Preamp + Power amp

(1)Output power

1 Wrms/CH @ 1KHz



(2)THD (@ 1W)

<10%



(3)S/N ratio

>75 dB +/- 3 dB at 1.0 W/1m at 1 kHz.



Speaker Driver

(1)Nominal impedance

8 ohm



(2)Rated input power

1.5W/CH



(3)Frequency response

580 ± 20% Hz～20KHz - 15dB Max



3.1.7.12 Electrostatic Discharge Requirements

3.1.7.13 EMC

3.1.7.14 Reliability

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).

Audio performance

- 13 -

(4)Output sound pressure

level

80 ± 3 dB at 1.0W 0.5 M Average at 800, 1000, 1200, 1500Hz



(5)Dimension of box

55 x 18 x 10 mm



Audio Control

(1)Volume range

0 ~100 levels



(2)Mute

On/Off



Item

Condition

Spec

OK

N.A

Remark

LCD Panel Supplier

AUO



Panel type of Supplier

M240HW01 VD



Screen Diagonal

24”  Display area

Unit=mm

531.36(H)x298.89 (V)



Physical Size

Unit=mm

556.0(W) x323.2(H) x 11.5(D)



Weight

Unit=gram

2530+/-80



Technology

TN type



Pixel pitch

Unit=mm

0.27675(H) x 0.27675 (W)



Per one triad

Pixel arrangement

R/G/B vertical stripe



Display mode

Normally White



Support color

16.7 Millions colors



6 bit+FRC

Item

Unit

Conditions

Min.

Typ.

Max.

Remark

Viewing Angle

[degree]

Horizontal CR = 10 (Right/Left)

150

170

-

[degree]

Vertical CR = 10 (Up/Down)

140

160

-

Contrast ratio

Normal Direction

600

1000

Response Time

[msec]

Rising Time

-

3.5

7.4

[msec]

Falling Time

-

1.5

2.6 [msec]

Rising + Falling

- 5 10

Color / Chromaticity Coordinates (CIE)

Red x

0.620

0.650

0.680

Red y

0.303

0.333

0.363

Green x

0.302

0.332

0.362

Green y

0.593

0.623

0.653

Blue x

0.127

0.157

0.187

Blue y

0.023

0.053

0.083

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]

200

250

-

Crosstalk (in 60Hz)

[%] 1.5

60Hz

LCD Characteristics

3.1.7.15 The Physical definition & Technology summary of LCD panel AUO_ M240HW01-VD

3.1.7.16 Optical characteristics of LCD panel

* The test methods for the above items’ definition please refer to the relative panel specification.

- 14 -

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 Only for

GL2460HM

Item

Condition

Spec

OK

N.A

Remark

Auto Adjust

Auto-Geometry



Brightness



Contrast



Horizontal Position



Vertical Position



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)



Only for

GL2460HM

Display Information

For input timing



User Controls

3.1.7.17 User’s hardware control definition

3.1.7.18 OSD control function definition

- 15 -

Volume

0-100  . Mute

On/Off



Hot key for Picture mode



Hot key for Brightness



Hot key for Contrast



Hot key for Volume



Only for

GL2460HM

Hot key for Input Select

 Hot key for Mode



Item

Condition

Spec

OK

N.A

Remark

Bezel opening

533.37*300.9



Monitor without Stand

W x H x D mm

565.36*333.39*53.7



Monitor with Stand

W x H x D mm

565.36*433.95*193.82



Carton Box (outside)

L x W x H mm

649*123*417(WW: C FLUTE) 651*125*421( JP: BE FLUTE)



Tilt and Swivel range

Tilt: -5°~20° Swivel: NA



Item

Condition

Spec

OK

N.A

Remark

Monitor (Net)

4.23Kg



Monitor with packing (Gross)

5.63Kg



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: MT-11010 BZL/CLMN/Base: Polish #8000



Color

DB59A



Item

Condition

Spec

OK

N.A

Remark

Color

Brown



Material

WW: C FLUTE JP: BE FLUTE



Compression strength

200



Burst Strength

16 

Mechanical Characteristics

3.1.7.19 Dimension

3.1.7.20 Weight

3.1.7.21 Plastic

3.1.7.22 Carton

- 16 -

Stacked quantity

WW 20’:800 / 40’:1680 JP 20’:726 / 40’:1566 EU 20’:600 / 40’:1260



Stowing Type

Container

Quantity of products (sets) (Every container)

Quantity of Products (sets) (Every Pallet)

Quantity of pallet (sets) (Every Container)

With pallet

20'

800(WW)

726(JP）

600(EU)

Pallet A:X Pallet B: 80

Pallet A:106 Pallet B: 68

Pallet A:60

Pallet A: X Pallet B: 10

Pallet A: 6 Pallet B: 3

Pallet A: 10

40'

1680(WW)

1566(JP)

1260(EU)

Pallet A:80 Pallet B: X

Pallet A:106 Pallet B: 68

Pallet A:60

Pallet A: 21 Pallet B: X

Pallet A: 9 Pallet B: 3

Pallet A:10

Without pallet

20'

X X X X X

40'

X X X

X X

Net Weight (Kg)

Gross Weight (Kg)

Dimension w/o Base W*H*D (mm)

Dimension w/ Base W*H*D (mm)

4.23Kg

5.63Kg

565.36*333.39*53.7

565.36*433.95*193.82

Carton Interior Dimension (mm) L*W*H

Carton External Dimension (mm) L*W*H

639*113*401

649*123*417(WW: C FLUTE) 651*125*421( JP: BE FLUTE)

Pallet & Shipment

3.1.7.23 Container Specification

3.1.7.24 Carton Specification Product:

Package:

- 17 -

3.1.8 Certification

- 18 -

- 19 -

3.2. Customer Acceptance

3.2.1. SCOPE

This document establishes the general workmanship standards and functional Acceptance criteria for LCD color monitor model GL2460/ GL2460HM Produced by BenQ.

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.

- 20 -

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 ANSI/ASQC Z1.4,

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

- 21 -

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.

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)

- 22 -

3.2.12. VISUAL INSPECTION CRITERIA

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

3.4

Poor print of logo or name plate

Major

3.5

Label on product Wrong or missing

Major

3.6

Scratched or dirty but legible spec. label

Minor

3.7

GAP between LCD and front bezel is over 2.0 mm

Major

3.8

Dot/area discolor over 1mm dia. in front or over 2mm dia. in other areas

Major

3.9

Cabinet warped, sagged or bulging ＞0.5% of surface length

Major

3.10

Cabinet warped, sagged or bulging noticeable but ＜0.5% of surface length

Minor

3.11

Sharp stud or edge, which can cause damage not safe

Major

3.12

Finishing of piece parts will not arrived in good condition at the customer

Major

3.13

Cabinet step ( between housing and bezel ) ＞1.0mm , < 1.5mm

Minor

3.14

Cabinet step ( between housing and bezel ) ＞1.5mm

Major

3.15

Wiring or fixing cord comes out of cabinet or jammed

Major

3.16

Auxiliary material used during production not removed

Major

3.17

Cabinet parts come loose during normal handling, not safe

Critical

3.18

Cabinet parts come loose during normal handling, but safe

Major

3.19

Tilt/swivel too flexible/not working

Major

3.20

Tilt/swivel stiff

Minor

3.21

Dirty front bezel and housing can’t remove

Major

1. PACKING

2. ACCESSORIES

3. APPEARANCE

4. AC POWER AND SIGNAL CABLE

5. INTERIOR OF THE PRODUCT

- 23 -

3.22

Dirty front bezel and housing removable easily

Minor

3.20

Sticker or loose user control switch which will not function correctly

Major

3.21

Missing knob or switch, not safe

Critical

3.23

Missing knob or switch, but safe

Major

3.24

Poor functional user controls in mechanical

Major

3.25

Unreadable printing of user controls label

Major

3.26

Rubber foot missing

Major

3.27

LED wrong material or missing

Major

3.28

LED sagged >1.0mm or bulging>0.5mm

Minor

3.29

Wrong S/N between spec. label and monitor display

Major

4

AC power and signal cable

4.1

AC power or connector not correct or damaged, not safe

Critical

4.2

AC power or connector not correct or damaged, but safe

Major

4.3

Signal cable contact pin dirty

Minor

4.4

Signal cable plug dirty or surface damaged, but safe

Minor

4.5

Cable crack

Major

4.6

Cable scratch ( wire not exposed ), or dirty

Major

4.7

AC-DC adapter no function

Minor

4.8

Signal cable contact pin dirty

Major

5

Interior of the product

5.1

Use Non-QVL ( Qualify vendor list )component

Major

5.2

Wrong parts, broken component, but safe

Major

5.3

Foreign material

Conductive (Has potential to short circuit)

Major

Non-conductive (Moveable)

Minor

5.4

Missing hardware, component or screw, stripped screw

Major

5.5

Loose hardware/screw or insufficient torque

Major

5.6

Poor wire routing, which is no concerned on EMI

Minor

5.7

Cold soldering/loose connections (Electrical)

Major

5.8

Wires and mechanical structure do not meet UL/CSA or TUV

Critical

5.9

Wrong parts, broken component, not safe

Critical

5.10

Component burn

Critical

- 24 -

3.2.13. OPERATIONAL INSPECTION CRITERIA

KEY

PATTERN

TEST ITEM

A

FULL WHITE

H - Size , V – Size Viewing Angle Light Output Impurity, Spot check Contrast Ratio Brightness adjust Range

E

DARK

Background, Spot check

F

FULL W , R , G , B

Impurity, Spot check CIE Coordinate check

G

256 COLORS

Color Check

H

16 GREY

Gray Check

H

Black/White stripe pattern

Electric characteristics

1. TEST PATTERN

2. SPECIFICATIONS

3. OPERATIONAL INSPECTION CRITERIA

3.2.13.1. List of test pattern

- 25 -

3.2.14. PANEL INSPECTION CRITERIA

Panel

Description

M240HW01 VD

Model Name GL2460/GL2460HM

Bright Dot

Single

3 Dots

Dark Dot

Single

5 Dots

Density

Bright Dot (Distance between two Bright Dots)

15mm

Dark Dot (Distance between two Dark Dots )

15mm

Bright to Dark Dot (Distance between Bright and Dark Dot)

15mm

Total Dots

Bright and Dark Dot

5Dots

- 26 -

4. Level 1 Cosmetic / Appearance / Alignment Service

Jump Setting for J7&J8

Jump Setting for J5&J6

4.1. Software / Firmware Upgrade Process

4.1.1 Hardware Requirement:

Step 1: Prepare PC with 2K or XP system, printer port cable x1 and D-sub cable x1 Step 2: Prepare ISP board and setup jumper as below. Pin 1 &2 of J5, J6, J7, and J8 are for

Firmware Upgrading. Please Setup the Jumper as below photo shows.

Short pin1 and pin2 at J5, J6, J7, J8.

- 27 -

Step 3:

1. Connect printer port cable between PC LPT1 and ISP board Then connect signal cable between ISP board (position 1) and monitor.

2. Power on the monitor.

Connection:

a. Connect the Printer Cable to the Printer Connector. b. Connect the other side to the Board c. Connect the signal cable to Board between ISP board (position 1) and monitor.

- 28 -

4.1.2 Software prepare for GL2460 Step 1:

Un-zip Port95nt and install into your computer.

Step 2:

Un-zip ISP application tool (RTDTool)

Step 3:

For Basic Setting sheet, select bin in the option of File Type, and select Winbond or MXIC in the

option of SPI Flash Brand

- 29 -

Step 4: Click the “BigBin” button and Find the F/W file (xxx.bin) Step 5: Press button to run the program

Step 6: When finished, it will shows PASS. If the words showed in red, need to run the program again.

Note: you can change program speed bar to meet your equipment speed if program firmware fail. After update FW:

Please check factory mode FW version as below

1. Switch to factory mode Factory mode hot key: Down + Power + Menu Key

2. Check factory menu: FW version For example:

- 30 -

Software prepare for GL2460HM

Step 1: Un-zip Port95nt and install into your computer. Step 2: Un-zip MStarISPToolv V4.5.105.zip ISP Tool Step 3: Run Program MStarISPToolv V4.5.105.exe (refer to below Picture)

Step 4: Program Setting

Click the button ‘Auto’, to set the ISP tool as bellow:

- 31 -

Step 5: Click the button “Read” to open the firmware that will be ISP

Step6: Click the button “Connect”, one cue “Device Type is xxxx” will show as bellow. If not, check

connects again:

- 32 -

Step7: Click the button “Run” to continue the programming. If the ISP process is successful, it will

show “Pass”

Step8: AC off/on, and turn on Factory Menu, and check F/W version Step7: Switch "Burnin" to off

- 33 -

4.1.3 EDID Upgrade Procedure

4.1.3.1 Software configuration:

Step 1: Un-zip Port95nt and install into your computer. Step 2: Un-zip QEDID302.rar

4.1.3.2 Hardware configuration:

Step 1: Prepare PC with 2K or XP system, printer port cable x1, and EDID cable x1 (as below)

EDID cable PN: 5K.09C09.501

Step 2: Prepare ISP board and setup jumper as below

Short pin1 and pin2 at J5,J6,J7,J8.

- 34 -

Step 3: Connect printer port cable between PC LPT1 and ISP board then connect EDID cable

between ISP board (position 1) and monitor.

Connection:

- 35 -

4.1.3.3 EDID programming procedure Step 1: Click on “QEDID302” to run the program

Note: If “VGA” and “DVI” choose 128bytes, and “HDMI” choose 256bytes

Step 2: Click “Open File” and select “VGA”, “DVI” or “HDMI” EDID file

- 36 -

If load file is successful, it shows “Open EDID Table OK.”

Step 3: Click on “Option” and choose “User ->Factory Mode” to enter factory mode

Step 4: Modify “Serial Number” and click “S/N RUN” button to update EDID and serial number to

EEPROM

- 37 -

4.2. Alignment procedure (for function adjustment)

Color mode

Color temperature

x Y

Normal

6500k

0.313±0.020

0.329±0.020

Min 180cd/m2

Bluish

9300k

0.283±0.020

0.297±0.020

Min 160 cd/m2

Reddish

5800k

0.326±0.020

0.342±0.020

Min 180 cd/m2

User Mode

Panel default color temp.

Min 200 cd/m2

sRGB

6500k (Gamma=2.2±0.2)

0.313±0.015

0.329±0.015

200 ± 20 cd/m2

A. Preparation:

1. Setup input timing (800x600@60Hz), Pattern: 5-Mosaic.

2. Setup unit and keep it warm up at least 30 minutes.

B. Timing adjustment:

1. Enter factory setting area (press “ENTER”, “MENU” and then press “SOFTPOWER”).

2. Check the settings to following values: Contrast = 50 Brightness = 100 Color temp = User Mode Picture mode = User Language = English Burn In =ON

Then, turn off the monitor power.

3. Turn on power enter user area.

C. Color balance adjustment:

1. Enter factory setting area (press “ENTER”, “MENU” and then press “SOFTPOWER”).

2. Setup input timings (800x600@60Hz), Pattern: 5-Mosaic.

3. Setup Picture mode = User then Color temp = “User Mode”.

4. Open Factory page then select “AUTOCOLOR or White Balance” item and press “ENTER”

button to do auto color

D. Color adjustment:

1. Setup input timing ICL-605, white pattern.

2. Confirm auto color adjustment had already done.

3. Measure color temperature by Minolta CA-210 (or equivalent equipment).

4. Check the color temperature Bluish, Reddish & Normal. The color temperature specification as follows:

For 250 nits

- 38 -

5. Setup input timing , 32 -Gray pattern, To check if there are any abnormal display problems of preset timing modes

6. Checking if the picture is no good, reject this monitor.

7. To check the power consumption by disabling “burn-in mode” setting

8. To clear user data and program complete DDC data to monitor by IIC bus communication.

E. Writing EDID file:

Step1: prepare PWR_BD, IF_BD and fix on SHD

Step 2: prepare Mylar (4K.1Y401.001) on SHD

Step 3: Fix HDMI and IO by screw

Step 4: Put panel on Bezel

Step 5: Put Shielding on the Panel and assembly EMI solution, assembly LVDS should be

carefully.

1. Setup a PC with DDC card.

2. Connect PC to monitor with a D-sub (DVI) signal cable.

3. Runs the writing program to write the EDID file into EEPROM.

4. Read EEPROM data and confirm it.

G. Wire Dressing

- 39 -

Step 6: Plug panel connectors and manage

the wire by tape

Step 7: Assembly the CTRL_BD on RC

Step 8: Assembly the rear cover & bezel

and fix the BKT_HINGE by screw

Step 9: Assembly the stand.

- 40 -

1 2 3

13

10 4 5

6 7 8

9

11

12

14

15

16

17

18

19

5. Level 2 Disassembly /Assembly Circuit Board and Standard Parts Replacement

5.1. Exploded View

- 41 -

5.2. Disassembly /Assembly

item

picture

Operation

Tool

Notes

1

Disassembly 3 screws

Screw-driver

5.2.1 Disassembly SOP

Preparation before disassemble

1. Clean the room for disassemble

2. Identify the area for monitor

3. Check the position that the monitors be placed and the quantity of the monitor; prepare the area for material flow; according to the actual condition plan the disassemble layout

4. Prepare the implement, equipments, and materials as bellow:

1) Press-fixture

2) Working table

3) Screw-driver

4) Knife*1

5) Glove

6) Cleaning cloth

7) ESD protection

- 42 -

2

Disassembly the bezel from the monitor, notice the disassembly order :

1.Top (1) parts of bezel

2. Right (2) parts of bezel

3. Bottom (3) parts of bezel

4. Left (4) parts of bezel

- 43 -

3

1.Turn over the monitor

2. Tear down control board and take out the wires.

3. Dismantle the Rear cover from the monitor.

- 44 -

4

Remove the LAMP wire, FFC cable

5 Remove the AL tape

6

Unlock the 5pcs screw, Take the main-SHD off the BZL，then take the

panel off the BZL.

- 45 -

7 Unlock the 5screws

8

Disassembled the PCBA from the Main-SHD. Disassembled the I/F and the Power Board，

then take out the 2 wires.

- 46 -

9

Disassembled the speaker from the MainSHD.(Only GL2460HM)

*The assembly is in the reverse order of disassembly.

- 47 -

5.3. Packing

- 48 -

5.4. Block diagram

I. Introduction:

GL2460 is a 24W” (1920x1080) resolution TFT LCD monitor. The monitor shall support VGA and

DVI with HDCP inputs.

GL2460 HM is a 24W” (1920x1080) resolution TFT LCD monitor. The monitor shall support

VGA 、DVI and HDMI with HDCP inputs.

It’s compliant with VESA specification to offer a smart power management and power saving function. It also offers OSD menu for users to control the adjustable items and get some information about this monitor, and the best function is to offer users an easy method to set all adjustable items well just by pressing OSD auto-adjust function which can auto adjusting all controlled items. GL2460HM also offer DDC2BI function to meet VESA standard.

II. Block diagram

The GL2460/ GL2460HM consists of a LCD module with LED BLU (1 Light Bar), a power board, a

control board, an interface board. GL2460HM has 1W speakers.

The block diagram is shown as below.

GL2460

- 49 -

GL2460HM

- 50 -

5.5. Trouble Shooting Guide

5.5.1 No Display or display is unstable on analog or digital port:

5.5.1.1 Interface Board:

- 51 -

5.5.2 BUTTON Function:

5.5.2.1 OSD Function

- 52 -

5.5.3 Power no work troubleshooting

No Backlight

+18V ok? No

Check D705

OK?

No

Yes

Replace D705No

Check F601,

Q601, R615 OK?

Yes

Replace F601,

Q601, R615.

No

Reaplce IC601

Yes

+5V ok?

Yes

Check CN701 pin2

(BL-ON) is Hi?

Yes

Check CN701 pin1

(BRT-ADJ) exist?

Yes

Check I/F BD

Yes

Replace IC851 No

Yes

Replace Q821,

D821

No

Check Panel

Yes

No

Check

D701/D702

OK?

Replace D701/D702

No

Check Q821,D821

OK?

Check IC851

OK?

- 53 -

5.5.4 Audio Function

Was Audio Input

plugged?

Yes

Return Power

Function Step.

No Yes

Was Audio VDD

existed?

Audio do not work

No

Check VOL_ON

Yes

Check VOL_ADJ

Plug Audio input.

No

Check MCU send VOL_ON control

signal or not.

No

Adjust volume

control switch to

normal.

Yes

Was CN551

plugged?

NoPlug CN551

Yes

Was Speaker

plugged?

NoPlug Speaker.

Yes

Replace IC551.

- 54 -

5.6. Circuit operation theory:

A-1) Interface board diagram:

GL2460

GL2460HM

- 55 -

(a) Circuit operation theory:

A basic operation theory for this interface board is to convert analog signals of Red, Green and Blue to digital signals of Red, Green and Blue. The scaling IC has internal A/D converter, internal OSD, built in LVDS transmitter and auto-detect input timing functions. A/D converter is convert analog signal to digital data. OSD is offering adjustable functions to end-user. Detect timing is for detect change mode. LVDS transmitter is used to compress the digital RGB data, the Hsync, Vsync and pixel clock generated by Scaling then output to LCD module. MCU stores source code and offers H/W DDC2Bi function & controls system processing. EEPROM is stored DDC data, OSD common data and user mode data.

(b) IC introduction:

1.) DDC (Display Data Channel) function: We use DDC IC to support DDC2Bi function. DDC data is store in 24C02 (EEPROM). Those data related to LCD monitor specification. PC can read them by “SDA” and “SCL” serial communication for I²C communication for DDC2Bi.

2.) Scalar IC: It is a total solution graphics processing IC for LCD monitors. It is configured with an integrated triple-ADC/PLL, an integrated receiver, a display processing engine, an integrated micro-controller and output display interface that can support LVDS panel interface format. And it also integrates power management control capability for greenmode requirements and spread-spectrum support for EMI management.

3.) EEPROM: We use 24C16 to store all the adjustable data, user settings and use 24C02 to store D-SUB and DVI EDID data.

4.) Flash ROM: We use 2M bit flash to store the FW hex.

A-2) Control board introduction:

There are 6 keys for user's control which includes “Power”, “Menu”, “Right/Up”, “Left/Down”,

“Auto”, and “Input Source”. The following descriptions are the introduction of these keys.

(1) Power key: to turn/off power of monitor

(2) “Menu” key: to enter sub-menus or select items. (3) “Up/Right” key: to select previous and to increase adjustment and Audio submenu hotkey

(4) “Down/Left” key: to select next and to decrease adjustment and Display mode submenu

hotkey (5) “Auto” key: to perform auto adjustment (6) LED: It indicates the DPMS status of this LCD monitor; green light means DPMS on

(Normal operating condition). Amber light means DPMS off (Power Saving).

- 56 -

EMI Filter

Rectifier and

filter

Isolation

power

transformer

Rectifier and

filter

DC to DC

circuit

PWM contrller

+ Switching

element

+5V regulator

output

Feedback

Isolation

A-3) Power board diagram:

- 57 -

Appendix 1 – Screw List / Torque

STANDARD SCREW TORQUE SPEC.

- 58 -

- 59 -

- 60 -

Appendix 2-Physical Dimension Front View and Side view

Fig. 1 Physical Dimension Front View and Side view

- 61 -

Fig. 2 Appearance Description

- 62 -