BenQ G2420HD Product Service Manual

Product Service Manual – Level II

Service Manual for BenQ:

G2420HD

P/N: 9H.L3ALB.QBx

Applicable for All Regions

Version: 001

Date:2009/05/26

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 (May, 2009)

© Copyright BenQ Corporation 2009. All Right Reserved.

- 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

3.2. Customer Acceptance ........................................................................................ 19

4 Level 1 Cosmetic / Appearance / Alignment Service ................................ 25

4.1. Software / Firmware Upgrade Process .............................................................. 25

4.2. Alignment procedure (for function adjustment) ................................................... 31

5 Level 2 Disassembly /Assembly Circuit Board and Standard Parts

Replacement ................................................................................................... 39

5.1. Exploded View ................................................................................................... 39

5.2. Disassembly /Assembly ..................................................................................... 41

5.3. Main-Shielding Position ...................................................................................... 50

5.4. Packing .............................................................................................................. 51

5.5. Block diagram .................................................................................................... 52

5.6. Trouble Shooting Guide ..................................................................................... 53

5.7. Circuit Operation Theory .................................................................................... 58

Appendix 1 – Screw List / Torque .................................................................. 69

Appendix 2

-

Physical Dimension Front View and Side view ....................... 72

- 2 -

Abbreviations & Acronyms

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 -

3.1. Specification

3.1.1 Introduction

G2420HD is defined 24’W LCD Monitor supports WXGA (1920x1080) resolution with DPMS

(Display Power Management System) and Senseye function. There are three different input types,

D-sub, DVI and HDMI, of models. G2420HD adopts AUO panel, M240HW01 V2.

The features summary is shown as below,

*All panel spec. in service manual 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.

1. “Contrast Ratio”: Set “brightness” at 100, and “contrast” at 50.

2. “Luminance”: Set “brightness” at 100, and “contrast” at 100.

Feature items

Panel supplier & module name

Screen diagonal

Display Format

Pixel Pitch

Viewing Angle (@ Contrast Ratio >= 10)

Analog interface with Scaling supported Yes

DVI interface with Scaling supported

Specifications

AUO M240HW01 V2

24W”

Remark

TN, Normally white

609.7mm

531.36(H) x 298.89(V) Panel Display information

0.276 mm x 0.276 mm per one triad

R/L:85/85 degrees (typ) and U/D: 80/80 degrees

(typ)

With 15-pin D-sub connector

Yes

HDMI interface with Scaling supported Yes

Max resolution mode supported

Number of Display Colors supported

1920 (H) x 1080(V)@60Hz

16.7 Millions

Contrast Ratio

Luminance

AC power input

DC power input (with AC power adapter)

DPMS supported(G2420HD)

1000:1 (typ.),600:1(min)

300 cd/m

(min)

Yes

2

(typ.),240 cd/m

Yes

No

2

RGB 6-bit + FRC

Test Condition: Set

Contrast at 50, Brightness at 100, Color at User preset

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

90-264 Volts, 47-63 Hz.

Off mode<1W

Sleep Mode <1W

LED indicator for power status showed Yes

OSD for control & information supported Yes

Multi-language supported for OSD

Buttons control supported

Yes

Yes

Flywheel control supported

Scaling function supported

No

Yes

Green/Amber/None

17 languages.

- 5 -

Auto adjustment function supported Yes

DDC function supported (EDID ver. 1.3) Yes

DDC-CI support version 1.1 or later Yes

Audio speakers supported No

Audio Jack (input connector) supported No

Earphone Jack (input connector)

Microphone function supported

Mechanical Tilt base design

VESA wall mounting design

Mechanical Rotate design

Mechanical Lift base design

Kensington compatible lock design

No

Yes

Yes

No

No

Yes

“I-Key” function

DDC2B

DDC-CI

From -5 to +23 degree

Item

Input Voltage range

Input Current range

Condition

Universal input full range

90 ~ 264VAC

Spec

90~264VAC /47~63Hz

< 2.0 Arms

Power Consumption

DPMS(G2420HD)

Inrush Current

Normal “On” operation

<49

W

DPMS “Off” state

DPMS “Sleep” state

110 VAC

220 VAC

< 1 W

< 1 W

< 30 A (peak)

< 60A (peak)

< 3.5 mA Earth Leakage Current 264 VAC/50Hz

Hi-Pot

Power Line Transient

1. 1500VAC, 1 sec

2. Ground test: 30A,

1sec

IEC1000-4-4

Without damage

< 0.1 ohm

1KV

OK N.A Remark

















Green

LED: Off

LED: Amber

Cold-start

(on-line test)

(in-lab test)



CCFL operation range

CCFL Frequency

90 ~ 264VAC

90 ~ 264VAC

3~8mA

40KHz ~ 80KHz





Depends on panel source

Depends on panel source

Power cord

Color: Black

Length: 1500 +/- 50 mm



- 6 -

Item

Signal Cable

Pin assignment

Analog input

Sync input

Digital input

Condition

15-pin D-Sub

Spec

Color: Black

Length: 1500 +/- 30 mm

OK N.A Remark



24-pin DVI-D

Color: Black

Length: 2000 +/- 50 mm

See Note-1



15-pin D-sub connector

24-pin DVI-D connector

19-pin HDMI connector

Signal type

Level

Impedance

Signal type

Level

Impedance

See Note-2

See Note-3







For 15-pin D-sub

For 24-pin DVI-D

For 19-pin HDMI

Separate analog R/G/B 

700 mV (peak to peak) 

75 Ohms +/- 1.5 Ohms 

Separate H/V-sync

Composite H/V-sync



(Positive/Negative)

Logic High: 2.4V ~

5.5V

Logic Low: 0V ~ 0.5V

(TTL level)



Minimum 2.2K

down)

0.7

μ s < H-SPW

1H < V-SPW

Ω (pull

For 15-pin D-sub

For 15-pin D-sub

Refer to VESA

VSIS Standard

V1R1





10K Ω for application

Sync Pulse Width

(SPW)

Level 600mV differential line

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,

PSignal Assignment

1 Red video

2 Green video

4 Ground

5 Cable Detected

Pin Signal Assignment

9 PC5V (+5 volt power)

10 Sync Ground

11 Ground

12 SDA

13 H-Sync (or H+V)

14 V-sync

15 SCL

- 7 -

Note-2:

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

PSignal Assignment

2 TMDS RX2+

4 Floating

5 Floating

6 DDC Clock

8 Floating

Pin Signal Assignment

13 Floating

14 +5V Power

15 Ground

16 Hot Plug Detect

18 TMDS RX0+

20 Floating

21 Floating

12 Floating

Note-3:

The pin assignment of 19-pin HDMI connector is as below,

- 8 -

Item

Max. support Pixel rate

Condition

Max. Resolution

Rise time + Fall time

Settling Time after overshoot /undershoot

Overshoot/Undershoot

Spec

170 MHz

1920x1080@60

<5.89 ns

(50% of minimum pixel clock period)

< 5% final full-scale value

< 12% of step function voltage level over the full voltage range

OK N.A Remark

 for digital inputs







 for digital inputs

1920 x 1080 @

60Hz

(max. support timing)

Refer to VESA

VSIS Standard

V1R1

Refer to VESA

VSIS Standard

V1R1

Item

Horizontal

Vertical

Condition

3.1.2.5 Plug & Play DDC2B DDC-CI Support

Spec

24-83 KHz

50-76 Hz

Item

DDC channel type

EDID

Condition Spec

DDC2B

Version 1.3

DDC-CI Version 1.1 or Later



OK N.A Remark





OK N.A Remark



 to LS

EDID definition.

DDCCI requirement definition.

- 9 -

HDMI video support timing

3.1.3 Operational & Functional Specification

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

Item

Resolution

Contrast ratio

Brightness

Response time

Viewing angle

CIE coordinate of White

Display colors

Response time with AMA

Condition

Any input resolution modes which are under

1920x1080

Spec

At R/G/B saturated condition

Gray to Gray

At Contrast ratio = 10

At Contrast ratio = 10

Average response time of gray level to gray level

1920 x 1080

OK NA Remark



600(min),1000(typ)

240 cd/m

2

(typ.),300(min)

2 ms (typ.)







Test Condition: Set

Contrast at 50,

Brightness at 100,

Color at User preset.

Test Condition :

Set contrast at

100 , brightness at

100 , color at User preset.

Test Equipment:

Westar TRD 100 or equal level equipment ;

R/L: 85/85 degrees (typ.)

75/75 degrees (min)

U/D: 80/80 degrees (typ.)

70/70 degress(min)





(0.31, 0.33) +/- (0.03,

0.03)



16.7 Millions colors



6

Test Condition: Set

2ms(typ.), 2.9ms(max)



Contrast at 50,

Brightness at 90,

Color at User preset.

- 11 -

3.1.3.2 Brightness Adjustable Range

Item Condition

range

At default contrast level

(saturate point) & Fullwhite color pattern

Spec

(Max. brightness value –

Min. brightness value)

≧

100 cd/

㎡

OK NA Remark



Item

Acoustical Noise

Condition

At 4 cm distance

3.1.3.4 Environment

Spec

≦

28 dB/A

OK NA Remark



Refer to C326

Item

Temperature

Humidity

Altitude

Condition

Operating

Spec

0 ~ +40

℃

OK NA Remark



Non-operating -20 ~ +60

℃

Operating 10





Noncondensing



Operating 0~3048m

Noncondensing

Without packing



With

3.1.3.5 Transportation

Item

(1) Vibration

Condition

Package, Non-Operating

Spec

(1) Sine wave

OK NA Remark

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.

2

/Hz 0.015 g

100 ~200 Hz, -6 dB/Oct.

200 Hz, 0.0038 g

2

/Hz

Equivalent to 1.47 Grms,

All primary axis, 20 min per- orientation, total is

60 min.

(2) Unpackaged Vibration

(3) Drop

(4) Shock

Unpackaged, Non-

Operating

Package, Non-Operating

Wooden 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.

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)

91 cm Height (MP stage)

(1 corner, 3 edges, 6 faces)



Waveform: half sine

Faces: 6 sides/ per orientation



3 shocks.

Duration: <3ms

Velocity accelerate: 75g

Item Condition

Electrostatic Discharge IEC801-2 standard

3.1.3.7 EMC

Item

TCO03

Condition

Electric

Magnetic

Spec

Contact: 8KV

Spec

Air: 15KV

Band 1 < 10 V/m

Band 2 < 1 V/m

Band 1 < 200nT

Band 2 < 25nT

OK NA Remark



OK NA Remark





EMI

EN55022 class B measure. Besides DNSF and VCCI class-2 are optional.



3.1.3.8 Reliability

Item

MTBF Prediction

CCFL Life time

Condition Spec OK NA Remark

Refer to MIL-217F > 60,000 Hours



Excluding

CCFL

At 25±2

℃

, under 7.0mA

40,000 Hours (min)



See

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 (Ear-Jack, For HDMI audio only)

Item

Preamp + Power amp

(1)Output power

(2)THD (@ 1W)

(3)S/N ratio

Speaker Driver

(1)Nominal impedance

(2)Rated input power

Condition

(3)Frequency response

(4)Output sound pressure level

(5)Dimension of box

Audio Control

(1)Volume range

(2)Mute

Spec

1 Wrms/CH @ 1KHz



<1%

4 ohm

1 W/CH

180~20KHz SPL-10dB

84 ± 3 dB (1W 0.5M)

284x60x27mm

2

0 ~100 levels

On/Off

OK NA Remark















3.1.4.1 The Physical definition & Technology summary of LCD panel

Item

LCD Panel Supplier

Panel type of Supplier

Display area

Physical Size

Condition

Unit=mm

Unit=mm

Spec

AUO

M240HW01 V2

531.36(H) x 298.89(V)

556(H) x323.2(V) x 16.65(D)

Pixel pitch

Pixel arrangement

Display mode

Support color

Unit=mm 0.276(H) x 0.276(W) (Typ.)

R/G/B vertical stripe

Normally White

16.7Millions colors

3.1.4.2 Optical characteristics of LCD panel

Item

Viewing Angle

Contrast ratio

Response Time

Color / Chromaticity

Coordinates (CIE)

Unit

[degree]

[degree]

[degree]

[degree]

Conditions

Horizontal

(Right)

CR = 10 (Left)

Vertical (Up)

CR = 10

(Down)

Normal Direction 600

-

[msec] Rising + Falling

Gray to Gray

Min.

75

75

70

70

-

-

-

Typ.

85

85

80

80

1000

3.4

1.6

5

2

Red 0.619

Red y

Green x

0.308

0.259

0.338

0.289

Green y

Blue x

0.579

0.116

0.609

0.146

OK N.A Remark















Per triad







6

Max.

-

-

-

-

7.4

2.6

10

-

0.368

0.319

0.639

0.176

Remark

Color Coordinates (CIE)

White

Blue y

White y

Luminance Uniformity

White Luminance @ CCFL

6.0mA (center) points measurement

[cd/m

2

]

Crosstalk (in 75Hz) [%]

0.04

0.299

0.07

0.329

0.10

0.359

75 80

240 300 -

1.5

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

3.1.5 User

3.1.5.1 User’s hardware control definition

Item

Power button

Enter button

Right/Inc. button

Left/Dec. button

Menu button(Exit buttom)

Condition

Mode button

Input Select button iKey button

Mute button

3.1.5.2 OSD control function definition

Spec OK NA Remark



















Item

Auto Adjust

Brightness

Contrast

Horizontal Position

Vertical Position

Pixel Clock

Phase

Color

OSD Position

OSD Time

OSD Lock

Language

Recall

Mode

Input Select

Condition Spec

Auto-Geometry

OK NA Remark















Bluish

Reddish

Normal

User: Separate R/G/B adjustment

Reset Color



OSD Horizontal position

OSD Vertical position

17 languages

Recall All



From 5 sec to 30 sec









Standard / Dynamics /

Movie / Photo/sRGB



D-sub

DVI

HDMI



Sharpness

Display Information

Volume

Mute

Hot key for Brightness

Hot key for Contrast

Hot key for Volume

Hot key for Input Select

Hot key for Mode

For input timing





For HDMI Audio only



For HDMI Audio only













The detailed firmware functions’ specification, please refer to C212 S/W spec. document.

3.1.6.1 Dimension

Item

Bezel opening

Monitor without Stand

Monitor with Stand

Carton Box (outside)

Tilt and Swivel range

Condition Spec

533.2*300.7 mm

W x H x D mm

570*348.42*63.26mm

W x H x D mm

570*412.6*183.94mm

L x W x H mm

636*133*482 mm

Tilt: -3.5 ~ +21.5 degree

Swivel: 0 degree

3.1.6.2 Weight

Item Condition

Monitor (Net)

Monitor with packing

(Gross)

Spec

4.91Kg

6.5Kg

OK N.A Remark











OK N.A Remark





3.1.6.3 Plastic

Item Condition

Flammability

Heat deflection To

ABS

Spec

>ABS<,94-HB

65

℃

UV stability

ABS Delta E < 8.0

MPRII:

ABS

Resin

757/HP-126/T0103)

Texture

MT-11010

Color

BCS-7015A

OK N.A Remark













3.1.6.4 Carton

Item

Color

Material

Compression strength

Burst Strength

Stacked quantity

Condition Spec

5 Layers

Kraft

A Flute

250 KGF

19.2 KGF/cm

2

OK N.A Remark











3.1.7.1 Container Specification

Stowing Type

With pallet

Without pallet

Container

20'

40'

Quantity of products

(sets)

(Every container)

624

1296

Quantity of Products

(sets)

(Every Pallet)

Pallet A: 76

Pallet B: 68

Pallet C: 24

Pallet A: 76

Pallet B: 68

Quantity of pallet

(sets)

(Every Container)

Pallet A: 4

Pallet B: 4

Pallet C: 2

Pallet A: 9

Pallet B: 9

20'

40'

X

3.1.7.2 Carton Specification

Product:

Net Weight (Kg) Gross Weight (Kg)

4.9Kg 6.5Kg

Dimension w/o Base

W*H*D (mm)

570*412.6*87.7mm

Dimension w/ Base

W*H*D (mm)

570*412.6*183.94mm

Package:

Carton Interior Dimension (mm)

L*W*H

Carton External Dimension (mm)

L*W*H

636*133*482 mm 624*121*456 mm

3.1.8 Certification

Item

Environment

PC-Monitor

Safety

Condition

Green design

Spec

API Doc. 715-C49

OK N.A Remark



Blue Angel

German Standard



E-2000

Switzerland



TCO’99

TCO’03

Green Mark

Microsoft Windows

Standard

PC98/99









DPMS VESA



DDC 2B Version 1.3



USB External

UL (USA) UL60950 3 rd

edition





CSA (Canada)

CAN/CSA-C22.2 No.

60950



Nordic / D.N.S.F EN60950



ISO14000

Requirement

Ergonomics

EMC

X- Ray Requirement

FIMKO EN60950

CE Mark 73/23/EEC

CB IEC60950





CB

TUV/GS

EN60950

EN60950 /

EK1-ITB 2000:2003





CCC (China) CB4943



GOST EN60950

SASO IEC60950

CE Mark

FCC (USA)

CISPR 22

89/336/EEC

FCC Part 15 B

Class B





EN55022 Class





VCCI (Japan)

BSMI (Taiwan)

C-Tick (Australia)

DHHS (21 CFR)

DNHW

PTB

VCCI Class B

CNS 13438





AS/ NZS CISPR22



USA X- Ray Standard



German X- Ray standard





TUV / Ergo

ISO 13406-2





3.2. Customer Acceptance

3.2.1. SCOPE

This document establishes the general workmanship standards and functional Acceptance

criteria for LCD color monitor model G2420HD 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.

OF

The defects are grouped into the following classes:

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.

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.

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 DEFECTIVES

A defective is a product which contains one or more defects. The defective will be classified into following classes.

A critical defective contains one or more critical and may also contain major and/or minor defects.

A major defective contains one or more defects and may also contain minor defects but contains no critical defect.

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

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 .

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.

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 1920 x 1080

3.2.11. TEST

1. PC with display adapter or other specific display adapter which is agreed upon by both parties

2. Test program by BenQ

Ruler

4. Power saving test tool

5. Minolta color analyzer ( CA-110 or BM – 7 )

3.2.12. VISUAL INSPECTION CRITERIA

PACKING

2.

APPEARANCE

4. CABLE

OF PRODUCT

No Description

1 Packing

1.1 Wrong packing material

1.2 Carton damaged(over 6cm dia).wet, badly taped or stapled, product will not arrive in good condition at customer

1.3 Carton damaged(3cm to 6cm dia), badly taped or stapled , product will arrive in good condition at customer

1.4 Wrong marking of trade mark

1.5 Wrong marking of model number

1.6 Wrong serial # marking on carton

1.7 Product wrongly placed in box ( upside down )

1.8 Broken polyfoam or PU foam

1.9 Broken packing bag

1.10 Wrong size or poor printing for artwork/character

1.11 Bar-code wrong, missing, or damaged

1.12 Label on box missing or damaged

1.13 Strange object in the box

1.14 Unit not corresponding to model stated on external label

1.15 Superficial breaking 5 ~ 10 cm dia

2 Accessories

2.1 Missing accessory parts

Accessory

3 Appearance of product

3.1 Incorrect color of cabinet

3.2 Incorrect color of tilt/swivel base

3.3 Wrong logo or name plate

Class

Major

Minor

Minor

Major

Major

Major

Major

Major

Major

Major

Major

Major

Major

Major

Major

Major

Major

Major

Major

Minor

No

3.4 Poor print of logo or name plate

3.5 Label on product Wrong or missing

Description

3.6 Scratched or dirty but legible spec. label

3.7 GAP between LCD and front bezel is over 2.0 mm

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

3.9 Cabinet warped, sagged or bulging

＞

0.5% of surface length

3.10 Cabinet warped, sagged or bulging noticeable but

＜

0.5% of surface length

3.11 Sharp stud or edge, which can cause damage not safe

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

3.13 Cabinet step ( between housing and bezel )

＞

1.0mm , < 1.5mm

3.14 Cabinet step ( between housing and bezel )

＞

1.5mm

3.15 Wiring or fixing cord comes out of cabinet or jammed

3.16 Auxiliary material used during production not removed

3.17 Cabinet parts come loose during normal handling, not safe

3.18 Cabinet parts come loose during normal handling, but safe

3.19 Tilt/swivel too flexible/not working

3.20 Tilt/swivel stiff

3.21 Dirty front bezel and housing can’t remove

3.22 Dirty front bezel and housing removable easily

3.20 Sticker or loose user control switch which will not function correctly

3.21 Missing knob or switch, not safe

3.23 Missing knob or switch, but safe

3.24 Poor functional user controls in mechanical

3.25 Unreadable printing of user controls label

3.26 Rubber foot missing

3.27 LED wrong material or missing

3.28 LED sagged >1.0mm or bulging>0.5mm

3.29 Wrong S/N between spec. label and monitor display

4 AC power and signal cable

4.1 AC power or connector not correct or damaged, not safe

4.2 AC power or connector not correct or damaged, but safe

4.3 Signal cable contact pin dirty

4.4 Signal cable plug dirty or surface damaged, but safe

4.6 Cable scratch ( wire not exposed ), or dirty

4.7 AC-DC adapter no function

4.8 Signal cable contact pin dirty

5 Interior of the product

5.1 Use Non-QVL ( Qualify vendor list )component

5.2 Wrong parts, broken component, but safe

Conductive (Has potential to short circuit)

5.4 Missing hardware, component or screw, stripped screw

5.5 Loose hardware/screw or insufficient torque

5.6 Poor wire routing, which is no concerned on EMI

5.7 Cold soldering/loose connections (Electrical)

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

5.9 Wrong parts, broken component, not safe

5.10 Component burn

Class

Major

Major

Minor

Major

Major

Major

Minor

Major

Major

Minor

Major

Critical

Major

Major

Major

Major

Major

Minor

Major

Critical

Major

Minor

Major

Major

Critical

Major

Major

Minor

Major

Minor

Major

Minor

Major

Major

Minor

Major

Major

Major

Major

Minor

Major

Major

Minor

Major

Critical

Critical

Critical

3.2.13. OPERATIONAL INSPECTION CRITERIA

TEST

SPECIFICATIONS

3. OPERATIONAL INSPECTION CRITERIA

3.2.13.1. List of test pattern

KEY

A FULL WHITE

PATTERN

E DARK

TEST ITEM

H - Size , V – Size

.Viewing Angle

Light Output

Impurity, Spot check

Contrast Ratio

Brightness adjust Range

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

Electric characteristics

3.2.13.2. Video performance

Item

Max. support Pixel rate

Max. Resolution

Spec

170 MHz

1920x1080@60

Rise time + Fall time

<5.89 ns

(50% of minimum pixel clock period)



Settling Time after overshoot /undershoot

< 5% final full-scale value



OK N.A Remark



Both for analog and digital inputs



Both for analog and digital inputs

1920 x 1080 @ 60Hz

(max. support timing)

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

3.2.14. PANEL INSPECTION CRITERIA

Inspection Item Specification

Line defect

Bright Dot

Green bright dots

Dark dots

Can’t be seen

<=2 dots

<=2 dots

<=4 dots

Total dots defect <=5 dots

Continuous

Defect

Two continuous bright dots(vertical ,horizontal, oblique):<=1 pair

Exclude continuous green-green bright dots

Three or more continuous bright dots (vertical, horizontal ,oblique):Not allowed

Two continuous dark dots(vertical ,horizontal, oblique):<=2 pairs

Three or more continuous dark dots(vertical, horizontal, oblique):Not allowed

Distance between 2B dots:>=15mm

Distance between 2Ddots:>=15mm

Distance between B and D dot :>=10mm

Note:

This Panel Specification is subject to change. Please check it on eSupport system for latest update.

4 Level 1 Cosmetic / Appearance / Alignment Service

4.1

.

Software / Firmware Upgrade Process

4.1.1 Hardware Requirement:

1. I2C board x 1 (a.Print Board b. I2C Board)

2. DSUB VGA cables x 2

3. Printer cable (with one male connector and another female connector) x 1.

4. PC or Notebook with parallel (printer) port x1.

Print Cord I2C Board

Check the Jumpers on the I2C circuit board (make sure J5/J6/J7/J8 are set at Pin 1 & Pin 2 short)

Connected to print cord and PC

Connected to Display

Signal Cable

Link “I2C BD, Power cable and Signal cable

4.1.2 Software prepare

1. Realtek.exe

Step 1: Press RTD Tool

Step 2: Choose “ IIC”, “Serial Flash” and “0x94”. Then, press “ISP”

1.

2.

Step 3: Click the “Bank” and Find the F/W

1. xxx.H00

2. xxx.H01

3. xxx.H02

4. xxxEXT.Hex

Step4: Choose “P-Flash” and “Auto”

Step5: Press to run the program

Step6: Check result, If the words showed in red, need to run the program again

3.

6.

4.

5.

4.1.3 EDID Upgrade Procedure

Step 1:

Run the program “Q-EDID-V016.exe”, when the UI popped up

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

Step 2:

Click “Open File” and select “VGA” or “HDMI” EDID file

Step 3:

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

And then, Click “Write EDID” button to update EDID

Step 4:

If write EDID is successful, it shows ”Write EDID OK …”

And then, click “Read EDID” button to check if successful or not.

Step 5:

If read EDID is successful, it shows” Read EDID OK …”

4.2. Alignment procedure (for function adjustment)

A. Preparation:

1. Setup input timing ICL-605( 1280x1024@75Hz ), 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 = 90

Color = User Mode

Senseye mode = Standard

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 WS7(1280x1024@75Hz), Pattern:5-Mosaic.

3. Setup Color mode “User Mode”.

4. Press “I-KEY”( or Left key directly), and then OSD will show “White Balance” item and then 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-110 (or equivalent equipment).

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

White Balance

(Bluish, 9300K set on OSD)

White Balance

(Reddish, 5800K set on OSD)

White Balance

(sRGB, 6500K set on OSD)

X+-

Y+-

Y+-

0. 326+(-) 0.015

0. 342+(-) 0.015

0. 329 +(-) 0.015

5. Setup input timing, 32 -Gray pattern.

To check if there are any abnormal display problems of preset timing modes

Check the following preset timings with General pattern:

No. Mode H V

1 720×400

2 640×480

31.468

31.469

70.8

59.940

3 640×480 37.500

4 800×600 37.879

75.000

60.317

5 800×600 46.875

6 1024×768 @ 60Hz

7 1024×768 @ 75Hz

48.363

60.023

8 1152x864 67.500

9

10

1280×1024 @

60Hz

1280×1024 @

75Hz

75.000

60.004

75.029

75.000

63.981 60.020

79.976 75.025

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:

1. Setup a PC with DDC card.

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

3. Please refer to the C212 for the correct EDID file.

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

5. Read EEPROM data and confirm it to match with the C212 document definition.

F. Command definition :

PC Host will send 0x7C IIC slave address and then following 4 bytes command

I2C Send Command Byte1

Byte

2

Byte

3 Byte4 OK N.A. Remark

Write Contrast to MCU RAM

Write Brightness to MCU RAM

Write Red Gain to MCU RAM

Write Green Gain to MCU RAM

Write Blue Gain to MCU RAM

Read Contrast from MCU RAM

CA

CA

CA

CA

CA

C3

55 Data

56 Data

57 Data

58 Data

59 Data

55 XX cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m



Write data to MCU RAM and update the related register to refresh the screen immediately.

Don’t store data to

EEPROM.

Read Brightness from MCU RAM

Read Red Gain from MCU RAM by color index

C3 56 XX

C3 57 XX

Read Green Gain from MCU RAM by color index

Read Blue Gain from MCU RAM by color index

C3 58 XX

C3 59 XX

Write C1 (Bluish) R-Gain Data to

EEPROM AA 3C Data

Write C1 (Bluish) G-Gain Data to

EEPROM AA

Write C1 (Bluish) B-Gain Data to

EEPROM AA

Write C2 (sRGB) R-Gain Data to

EEPROM AA

3D Data

3E Data

4C Data cksu m cksu m cksu m cksu m







 cksu m

 cksu m

 cksu m

 cksu m



Base on current color index to read back the right gain value.

Write C2 (sRGB) G-Gain Data to

EEPROM AA 4D Data

Write C2 (sRGB) B-Gain Data to

EEPROM AA 4E Data

Write C3 (Reddish) R-Gain Data to

EEPROM AA 5C Data

Write C3 (Reddish) G-Gain Data to

EEPROM AA 5D Data

Write C3 (Reddish) B-Gain Data to

EEPROM AA 5E Data

Write User R-Gain Data to EEPROM

Write User G-Gain Data to EEPROM

Write User B-Gain Data to EEPROM

AA

AA

AA

6C Data

6D Data

6E Data cksu m cksu m cksu m cksu m







 cksu m

 cksu m

 cksu m



Write Cx R-Gain Data to EEPROM

Write Cx G-Gain Data to EEPROM

Write Cx B-Gain Data to EEPROM

Write Contrast to EEPROM

Write Brightness to EEPROM

Write C/T index to EEPROM

Write OSD-Hpos to EEPROM

Write OSD-Vpos to EEPROM

Write Language to EEPROM

Write EEPROM OSD Timer

Write EEPROM Volume

Write EEPROM Gamma index

Write OSD Transparency to EEPROM

Write OSD Rotation to EEPROM

AA

AA

AA

AA

AA

AA

AA

AA

AA 97 0~17

AA

AA

AA

AA

AA

7C Data

7D Data

7E Data

92 Data

93 Data

94 1~4

95 Data

96 Data

98 Data

99 Data

9A Data

9E Data

9F Data

Read C1 (Bluish) R-Gain data from

EEPROM A3 3C XX

Read C1 (Bluish) G-Gain data from

EEPROM A3 3D XX

Read C1 (Bluish) B-Gain data from

EEPROM A3 3E XX

Read C2 (sRGB) R-Gain data from

EEPROM A3 4C XX

Read C2 (sRGB) G-Gain data from

EEPROM A3 4D XX cksu m

 cksu m

 cksu m cksu m



 cksu m



Reserved for some model have extra color temperature cksu m

 cksu m

 cksu m



1=C1/9300/Bluish,

2=C2/6500/sRGB/,

3=C3/5800/Reddish,

4=User, 5=Cx

(Also Update MCU RAM)

1=English, 3=French,

0=Deutsch, 4=Italian,

2=Spanish, 5=JAPAN,

6= 繁中 , 7= 簡中

8=Hungarian,

9=Serbian, 0A=Russian,

0B=Dutch, 0C=Polish,

0D=Czech, 0E=Swedish,

0F=Portugese,

10=Romanian cksu m

 cksu m

 cksu m

 cksu m

 cksu m cksu m



 cksu m cksu m





For model with Gamma curve selection function cksu m

 cksu m

 cksu m



Read C2 (sRGB) B-Gain data from

EEPROM A3

Read C3 (Reddish) R-Gain data from

Read User R-Gain data from EEPROM

Read User B-Gain data from EEPROM

Read Cx R-Gain data from EEPROM

Read Cx G-Gain data from EEPROM

Read Cx B-Gain data from EEPROM

Read Contrast from EEPROM

Read Brightness from EEPROM

Read C/T index from EEPROM

Read OSD-Hpos EEPROM

Read OSD-Vpos from EEPROM

Read Language from EEPROM

Read OSD Timer from EEPROM

Read Volume from EEPROM

Read Gamma index from EEPROM

Read OSD Transparency from

A3

Read User G-Gain data from EEPROM A3

A3

A3

4E

6C

6D

6E

7C

XX

EEPROM A3 5C XX

Read C3 (Reddish) G-Gain data from

EEPROM A3 5D XX

Read C3 (Reddish) B-Gain data from

EEPROM A3 5E XX

XX

XX

XX

XX

A3 7D XX

A3

A3

A3

A3

A3

A3

A3

A3

A3

A3

7E

92

93

94

95

96

97

98

99

9A

XX

XX

XX

XX

XX

XX

XX

XX

XX

XX

EEPROM A3 9E XX cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m



Reserved for some model have extra color temperature cksu m

 cksu m

 cksu m



1=C1/9300/Bluish,

2=C2/6500/sRGB/,

3=C3/5800/Reddish,

4=User, 5=Cx

1=English, 3=French,

0=Deutsch, 4=Italian,

2=Spanish, 5=JAPAN,

6= 繁中 , 7= 簡中

8=Hungarian,

9=Serbian, 0A=Russian,

0B=Dutch, 0C=Polish,

0D=Czech, 0E=Swedish,

0F=Portugese,

10=Romanian cksu m

 cksu m

 cksu m

 cksu m

 cksu m



For model with Gamma curve selection function

Read OSD Rotation from EEPROM

Change Color Temp. to

A3 9F XX

C1/9300K/Bluish CC 01 XX


C2/6500K/sRGB CC 02 XX


C3/5800K/Reddish CC 03 XX

Change Color Temp. to User

Change Color Temp. to Cx

Change Input Source to D-Sub

Change Input Source to DVI

On burn in mode

Off burn in mode

Monitor is forced power saving

Monitor wake up from power saving

Change Sense-Eye mode to Standard

Change Sense-Eye mode to Movie1

Change Sense-Eye mode to Movie2

Change Sense-Eye mode to Photo

Set luminance sensor mode to Off

Set luminance sensor mode to Bright

Set luminance sensor mode to

C1 01 XX

Moderate C1 02 XX

Set luminance sensor mode to Dim

Increase ADC R-Offset2

Increase ADC G-Offset2

Increase ADC B-Offset2

Increase ADC R-Gain

Increase ADC G-Gain

CC

CC

CD

CD

CE

04

05

01

02

01

XX

XX

XX

XX

XX

CE XX* XX

CF 01 XX

CF XX* XX

C0

C0

C0

C0

C1

C1

00

01

02

03

00

03

XX

XX

XX

XX

XX

XX

AC 23 Data

AC 24 Data

AC 25 Data

AC 33 Data

AC 34 Data cksu m cksu m

 cksu m

 cksu m

 cksu m





Change C/T immediately.

And store C/T index to

EEPROM. cksu m



Reserved cksu m

 cksu m

 cksu m



Store data to EEPROM cksu m



XX* = Non “1” value

Store data to EEPROM cksu m

 cksu m



XX* = Non “1” value cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m



Change Sense-Eye mode immediately. And store the index to

EEPROM. cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m



Change luminance sensor mode immediately. And store the index to EEPROM.

Increase ADC B-Gain

Decrease ADC R-Offset2

Decrease ADC G-Offset2

Decrease ADC B-Offset2

Decrease ADC R-Gain

Decrease ADC G-Gain

Decrease ADC B-Gain

Read ADC R-Offset2

Read ADC G-Offset2

AC

AD

AD

AD

AD

AD

AD

AE

AE

35 Data

23 Data

24 Data

25 Data

33 Data

34 Data

35 Data

23

24

XX

XX cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m



Read ADC B-Offset2

Switch DDC bus to

DVI-D

Change Senseye Mode

DDC IC

AE 25 XX

Read ADC R-Gain

Read ADC G-Gain

Read ADC B-Gain

User mode to factory mode

Auto Color (Offset1, Offset2, Gain)

Copy EDID Serial number to EEPROM

AE

AE

AE

1A

1B

1C

33

34

35

5A

5A

5A

XX

XX

XX

XX

XX

XX cksu m

 cksu m

 cksu m

 cksu m

 cksu m

 cksu m cksu m





For specified “Industry

Customer” model.

Factory mode to User mode 1E 5A XX

Clear user mode and factory recall

Write EDID data to MCU DDC RAM

Copy DDC RAM data to EEPROM

1F 5A XX cksu m



55 NA NA NA



BB NA NA NA

Drive WP pin to low to enable write DDC

IC 55 NA NA NA



Store data to EEPROM

For MTV312 MCU type

For MTV312 MCU type



For stand alone DDC IC

Drive WP pin to high to disenable write function BB NA NA NA

Switch DDC bus to

DVI-A

DDC IC 44 NA NA NA





For stand alone DDC IC

For input signal with multi-input source

33 NA NA NA

C0 0~3 XX

 cksu m



For input signal with multi-input source

Change Power Status

Change Language Type

D0 Data XX cksu m

D1 Data XX ckssu m





PowerOFF: Data=AA

PowerON: Data=Other

Value

Asia: Data=AA

European: Data=Other

Value

EEPROM Bank R/W (For Debug using only, not for Production Line Write EEPROM directly)

Read EEPROM Bank 0 B0

Addr ess XX cksu m



Read EEPROM Bank 1

Read EEPROM Bank 2

Read EEPROM Bank 3

Write EEPROM Bank 0

Write EEPROM Bank 1

Write EEPROM Bank 2

Write EEPROM Bank 3

B1

B2

B3

B8

B9

BA

BB

Addr ess XX

Addr ess XX

Addr ess XX

Addr ess Data

Addr ess Data

Addr ess Data

Addr ess Data cksu m cksu cksu cksu m



 m m





(For

(For 24C08 type) cksu m

 cksu m



(For 24C08 type) cksu m



(For

Note A: Byte4 (cksum) = Byte1 + Byte2 + Byte3

Note B: Data = The value write to MCU or EEPROM

Note C: XX = don't care, any value (<=0xFF).

When PC Host sends 0x7D command to MCU, MCU must return as following (2 bytes)

Return Code

Checksum error code

R-Byte1

FC

R-Byte2

AA

Normal return code

If normal return code is exact FCh the above Byte3 (/data)

FC

FC

CF

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

5.1. Exploded View

1

7

8

6

2

5 4

5

3

10

9

11

12

18

13

22

14

15

16

17

19

23

20

21

5E.0BJ06.001

5E.0RM03.001

5E.0RM02.001

5E.0RM01.011

5F.LUDB0.051

* This Service BOM is subject to change. Please check it on eSupport and SPO system before service parts order release.

5.2. Disassembly /Assembly

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

1 ite m

4. Prepare the implement, equipments, material as bellow:

1) Press-fixture

2) working table

3) Screw-driver

4) knife*1

5) glove

6) cleaning cloth

7) ESD protection

Disassemble the stand

 2 screws

Tool Notes

Screw-driver

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

1.Left (1) parts of bezel

2.Top (2) parts of bezel

3.Bottom (3) parts of bezel

4. Right (4) parts of bezel

Don’t draw the BZL the bezel ,notice don’t bend the

C/B .man must wear glove

The purpose is loose the BZL

3

4

5

Turn over the monitor ,dismantle the

Rear cover from the monitor(if it have earphone function, pull the earphone wire out of the connector)

Pull the c/b wire out of the c/b connector.

Tear off the C/B wire from panel ,move away

C/B and button

Tear off the big aluminum foil.

6

7

8

Tear off the two acetic tapes (if it have that )

Pull out the light wires from connector .

Disassemble the SHD

Tear off all the tapes sticked on the BKT

(including aluminum foils and acetic tapes )

10

11

9

10

Tear off the yellow tape on the LVDS FFC ,and pull LVDS FFC out off the panel .

Disassemble the hexangular screws

( four or two )

Turn over the BKT , and disassemble the power board and I/F board .----

 7 screws

Screw-driver

Pull out the connector

ite m

1

5.2.2 Assembly SOP

Preparation before assemble

1. Clean the room for work

2. Identify the area for material

3. Prepare the implement, equipments, materials as bellow:

1) Press-fixture

2) working table

3) Screw-driver

4) knife*1

5) glove

6) cleaning cloth

7) ESD protection

Put panel on the cushion carefully,

Tool Notes

2 Fetch I/F board and

LVDS FFC ,insert FFC into I/F .

3 Fetch power board and put it into BKT, and put the connector wire into

I/F connector ,then put

I/F into BKT (like the pic. Showed )

4

5

6

7

Lock PCBA screw .--

 five or six PCBA screw ,one earth screw .

Screw driver :

7±1kg

Turn over the bkt, and lock the hexangular screws ( four or two )

Screw driver:5+0.6kg

Lock one HDMI screw

(if it have that )

Lock SHD on the

BKT ,to fixup the P/B

Screw driver:

Side mount:

3±0.6

Other:

4±0.6

Insert LVDS FFC in the panel

8 Fetch yellow tape, and stick it on the LVDS

FFC

Use tool ,location the bkt on location tool:

G24101 panel

10 Stick tapes follow standard:

One tape stick on angel side ,one on right side ,one on ground side .

Stick acetic tapes on left

11 Insert light wires, and make sure it connect well .

Use two acetic tapes fix the light wires .

12

13

14

Stick big aluminum foil on the side (like left

PIC)

Fetch bezel ,and put panel into bezel (don’t touch the LCD screen.

Put c/b in the button, and put button in bezel.

Tear on the back of c/b wire , insert c/b connector in

I/F ,stick c/b on panel .

15 Fetch cover ,cover the monitor .( if it have ear phone function ,assay earphone board on cover first, and insert the wire into I/F )

First cover bottom ,then cover two sides ,last cover the angel side .

Screw driver(if it need) :

3+0.5KG

Φ 1.75±0.05

#1

16 Assay stand .(follow picture on left .) put hinge in front cover ,and lock four screws, then cover the back cover ,last put the clip in front cover.

Screw driver :

7.5+0.5kg

17 Put stand in monitor, and lock two screws .

Screw driver :

9.0+1.0kg base on monitor .

5.3. Main-Shielding Position

機種名稱測點A尺寸

BenQ G900HD

BenQ G2220HD

56.69mm

84mm

BenQ G2020HD

BenQ G2410HD AUO

BenQ G2410HD CMO

69mm

78.65mm

72.65mm

BenQ T2200 56.69mm

BenQ G2420HD/G2420HDB 78.65mm

測點B尺寸

40mm

44.5mm

42mm

57.2mm

55.85mm

40mm

57.2mm

測點C尺寸

40mm

44.5mm

42mm

57.2mm

55.85mm

40mm

57.2mm

AL-Tape

L Shape Tooling

5.4. Packing

5.5

.

Block diagram

The G2420HD is a 24” (1920x1080) Model, LCD type is TN+ Film and Normally White,

16.7M colors(R, G, B 6-bit data+ FRC data) TFT LCD monitor. There are D-SUB, DVI and

HDMI interface LCD monitor. 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. The best function is to offer users an easy method to do DDC/CI Enable and Auto Adjustment items well done just by pressing hot key, we called it “DDC/CI” and “Auto” which can manual controlled items.

G2420HD also offer DDC2/CI function to meet VESA standard.

The G2420HD consists of a LCD module with 4 lamps, a power board including an inverter, a control board, a Interface board. The block diagram is shown as below.

Monitor internal structure

Monitor internal structure

5.6. Trouble Shooting Guide

5.6.1 No Display or display is unstable on analog, digital or video port:

No picture or picture unstable on

Analog port or DVI port or HDMI port

Power off

N

Does cable plugs in connector?

Y

Is 5V from power board normal ?

Y

Is Power LED light Green or amber?

Y

Is Power LED status normal?

Y

Does crystal work correctly?

Y

Is interface BD normally?

Y

Is LVDS cable connect OK?

Y

Replace panel

Y

N

N

N

N

N

N

N

Turn on power

Plug the cable then turn on power again.

Check Power BD 5V output

Check Key BD and Key

BD cable

Replace Power Key BD

Check crystal CKT or replace it (Y1)

Replace interface BD

Plug LVDS cable again or replace it

5.6.2 BUTTON Function:

OSD is not working

Yes

Is control BD connecting?

Yes

Is bottom key normally?

No

Replace Control BD

Is OSD working??

No

Check Interface BD

5.6.3 OSD Function:

OSD doesn’t work

Is control BD working?

Y

Check interface BD

N

No

Yes

Plug control BD then retry

Replace control BD then retry

Replace control BD

5.6.4 Power no work troubleshooting

5.6.4.1 DC/DC converter

Panel or I/F

BD or Audio no function

DC/DC converter

+5V(+5.4V) valid?

No

Yes

Check wire and I/F

BD

Check L852, Q852, FD852, FD853, Q855,

Q856

(L851, Q851, FD851, Q853, Q854)

OK?

No Replace components

IC

Check IC851

Vcc valid?

No

Check F851

OK?

Yes

AC/DC converter

Yes

No

Check IC851 pin1 frequency, DTC, feedback

OK?

Replace F851

No

Replace IC851 components

5.6.4.2 AC/DC converter

5.6.4.3 Inverter

Panel lamp no work

Check V-INVERTER

OK?

Yes

Check IC801 VDDA

OK?

Yes

Check BL_ON,

BRT_ADJ

OK?

Yes

Check IC801 frequency, output

OK?

Yes

Check T801, T802,

Q801~Q804

No

AC/DC converter

No

DC/DC converter

No

No

Check wires, I/F BD

Replace IC801 components

Replace components

5.7. Circuit Operation Theory

A-1.) Interface board diagram:

A-2.) Circuit operation theory:

(a) Monitor Diagram:

(b) 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 RSDS 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. RSDS transmitter is used to compress the digital RGB data, the Hsync, Vsync and pixel clock generated by Scaling then output to

LCD module. Flash-rom stores source code and MCU (embedded in Scalar) offers H/W

DDC2Bi function & controls system processing. EEPROM is stored DDC data, OSD common data and user mode data.

(c) 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: There are A/D, TMDS receiver, Scaling, OSD and LVDS transmitter functions built-in the RTD2482D IC. Scaling IC is revolutionary scaling and color engine, capable of expanding any source resolution to a highly uniform and sharp image or down scaling from 1920x1080, combined with the critically proven integrated 8 bit triple-ADC and patented Rapid-lock digital clock recovery system. It also support detect mode and

DPMS control.

3.) MCU embedded in Scalar: Control unit, it controls all the functions of this interface board, just like the OSD display setting, the adjustable items, adjusted data storage, the external

IIC communication, support DDC2Bi. .

4.) EEPROM: We use 24C16 to store all the adjustable data, user settings and uses two

24C02 to store D-SUB, DVI and HDMI data.

5.) Flash-rom stores source code.

A-2.) Control board introduction

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

“Auto”, and “Enter”. 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) “Right/Plus key: to select previous and to increase adjustment and Brightness /Contrast

Popup submenu hotkey

(4) “Left/Minus” key: to select next and to decrease adjustment and Senseye Mode Popup submenu hotkey

(5) “Auto” key: to perform auto adjustment

(6) LED: It indicates the DPMS status of this LCD monitor; blue light means DPMS on (Normal operating condition). Amber light means DPMS off (Power Saving).

A-3.) Power board diagram:

EMI Filter

Rectifier and filter

Isolation power transformer


Inverter circuit

PWM controller

Switching element

Feedback

Isolation


SW regulator

Fig.1

#1 EMI Filter

This circuit (fig. 2) is designed to inhibit electrical and magnetic interference for meeting FCC,

VDE, VCCI standard requirements.

TR601

NTC 5

L4

2 1

1

2

L602

4

3

19MH

C601

0.22U M

C604

2200PF

C602

0.22U M

C603

2200PF

N3

Fig. 2

#2 Rectifier and filter

AC Voltage (90-264V) is rectified and filtered by BD601, C605 (See Fig 3) and the DC Output voltage is 1.4*(AC input). (See Fig.3)

L6 E1

4

-

~

GSIB4A60-LF

BD601

+ 1

+

C605

150U 450V

<Spec>

~

Fig. 3

#3 Switching element and Isolation power transformer

When the Q601 turns on, energy is stored in the transformer. During Q601 turn-off period, the stored energy is delivered to the secondary of transformer. C614, R607, C607 and D601 are snubber circuits. R615 is current sense resistor to control output power. (See Fig.4)

L605

E2

R607

68K

Z45/100MHZ

C607

0.001U J

E3

1

T601

12

D601

UF4007-LF

E4

2

L604

Z45/100MHZ

E5

3 10

11

L603

Z45/100MHZ

5

Q601

G

C614

100P K

R615

0.22

4

6 8

Fig. 4

#4 Rectifier and filter

D701, D702, C701, C702, C703 are used to produce DC output. (See Fig.5)

A1

J

A2

1

T601

12

D701

YG862C15RSC

A1

J

A2

R701

100

D702

YG862C15RSC

2

+

C701

470U 35V

RC1820

+

C702

470U 35V

RC1820

R702

100

C704

1000P K

C705

1000P K

3 10

11

V-INVERTER

+

C703

470U 35V

RC1820

5

4

6 8

Fig. 5

#5 PWM Controller

The TEA1530(A)T can be used in Fixed Frequency converter designs for low voltage, high current applications. At low power (standby) levels, the system operates in cycle skipping mode which minimizes the switching losses during standby.

The proprietary high voltage BCD800 process makes direct start-up possible from the rectified universal mains voltage in an effective and green way. A second low voltage

BICMOS IC is used for accurate, high speed protection functions and control.

The TEA1530(A)T enables highly efficient and reliable supplies to be designed easily.

E1

L605

E2

+

C605

150U 450V

<Spec>

R607

68K

Z45/100MHZ

C607

0.001U J

E3

1

T601

12

D601

UF4007-LF

2

E4

R605

10K

L604

Z45/100MHZ

E5

3 10

11

1

IC601

NXP1530

Drain

8

E6

+

C606

47U 50V

R606

10 J

K A

D602

EGP10D-LF

R611

27

L603

Z45/100MHZ

5

ZD601

TZMC20

C613

1U 25V 2

Gnd HVS

7

3

Protect Driv er

6

C608

1000P K

R612

10 J

Q601

STP7NK80ZFP

G

C614

100P K

4

R613 68K F

4

Ctrl Sense

5

C612

1U K

R620

100K F

R617

10K F

C611

100PF 50V J

R614

1K F C616 1U K

R622

10K F

R615

0.22

6 8

90V ?W Protection

264V ?W Protection

C610

3300P J

R618

4.7K

Fig. 6

A K

ZD602

TZMC6V2

R616

68K

K

D605

LL4148

A

#6 Feedback circuit

PC123 is a photo-coupler and KA431 is a shunt regulation. They are used to detect the output voltage change and be the primary and secondary isolation. When output voltage changes, the feedback voltage will be compared and duty cycle will be decided to control the correct output voltage. (See Fig.7)

R708

R707

10K

2K

R711

22K F

R709

10K F

C709

0.1U K

IC602

PC123FY1J00F

R

IC702

KA431AZT A_NL

R712

3.32K F

Fig. 7

#7 DC-DC circuit

V-INVERTER

IC851(PWM IC TL1451) is used to convert V-INVERTER to other voltage needed.

F851

32V 2A Q853-C

Q851

2SJ598

L851

S D

47U

Q857-B

B

R852

2.7K

C853

1U K

Q857

2N3906S C860

0.1U

AUDIO_CTRL

R863

330

R860

22K

+

C862

220U 25V

IC851-10

Q853-B

R864

3.3K

B

Q853

PMBS3904

R865

22K

FD851

SB360-LF

C863

470P K

R876

2.05K F

C864

0.1U

R861

2.7K J

R866

22

B

Q854

2N3906S

R856

330K

R877

1.2K F

R853

10K F

C855

0.01U K

+

C865

220U 25V

R854

10K F

C854

220P K

R855

47K

IC851-14

MCU_3.3V

C852

0.1U K

IC851

TL1451ACN

C851

470P K

C856

1U K

R857

10K F

R858

330K

R859

10K F

R851

10K F

C857

220P K

R873

47K

C858

0.01U K

IC851-7

C859

1U K

Q855-C

+

C867

220U 25V

R871

3.3K

B

Q855

PMBS3904

Q855-E

R862

2.7K J

B

Q856

2N3906S

R872

22K

R882

22

S

Q852

2SJ598

D

L852

FD852

ERB83-004

FD853

ERB83-004

47U

C868

470P K

L853

Z45/100MHZ

IC851-3

R874

3.09K F

C869

0.1U

+

C871

220U 25V

R875

1K F

PANEL_5V

IC851(TL1451) is a 2-way PWM control IC.

C851/R851 determine the frequency of PWM.

Pin 1IN+/1IN- and 2IN+/2IN- are the inputs of the error amplifiers. 1IN+/2IN+ are used as the feedback pins for DC-DC circuit.

1DTC/2DTC are used for determining the threshold states of dead time control.

C854, C855, C857, C858, R855 and R873 are used for gain/phase compensation.

P11

V-INVERTER

C853

1U M

R856

330K

R853

10K F

C855

0.01U K

R854

10K F

R855

47K

R863

330

F851

32V 2A

C854

220P K

C852

0.1U K

IC851

TL1451ACN

C851

470P K

C856

1U M

R858

330K

R857

10K F

R859

10K F

R851

10K F

C857

220P K

R873

47K

C858

0.01U K

P13

The timing diagram of TL1451 is shown as following:

C859

1U M

P-MOSFET Q852 is used for switching of step-down converter. And FD852/FD853 are the flywheel diodes.

R874/R875 determine the feedback to IC851 to set up the output to +5V or +3.3V.

V-INVERTER

F851

32V 2A

IC851

TL1451ACN

+

C867

220U 25V

R871

3.3K

B

Q855

PMBS3904

P10

R862

2.7K J

B

Q856

2N3906S

R872

22K

R882

22

S

Q852

2SJ598

D

L852

47U

FD852

ERB83-004

FD853

ERB83-004

C868

470P K

L853

Z45/100MHZ

R874

3.09K F

C869

1200P K

R875

1K F

PANEL_+5V

+

C871

220U 25V

#8 Inverter Circuit Operation Theory

LCDM Inverter Controller --- OZ9933

OZ9933 is a high performance, cost-effective CCFL controller designed for driving large-size

LCD applications requiring 2 to 6 CCFLs.

The controller converts unregulated DC voltages into a nearly sinusoidal lamp voltage and current waveforms.

The OZ9933 supports full-bridge power conversion topologies while maintaining highefficiency operation, current and voltage regulation, over-voltage and over-current protection, high drive capability.

The control logic provides s regulated ignition voltage and appropriate protection features for over-voltage or over-current conditions.

Pin Assignment of OZ9933

Full-Bridge Configuration

R801

5.1K

ZD801

TZMC6V2

P_A

Q801

4

N_B

2

R811

10K

P_C Q802

4

K A

FD801

ERB83-004

5

6

8

7

N_D

2

R812

10K

5

6

8

7

C827

4.7U M

C829

4.7U M

6

T 801

5

.

7

2

3

.

4

8

.

.

1

Fig. 1

Fig. 1: Q801, Q802 and T801 form a full-bridge configuration.

The full-bridge switch is configured such that Q801 N-MOS and Q8026 P-MOS are ON while

Q801 P-MOS and Q802 N-MOS are OFF in a half-cycle. During the next half cycle, Q801 N-

MOS and Q802 P-MOS are OFF while Q801 P-MOS and Q802 N-MOS are ON. This develops an alternating current through the transformer primary.

The result in T801 primary coil has an AC square waveform.

Certainly, the secondary of T801 will produce high voltage AC sinusoidal waveform.

Feed-back Circuit

9

NDR1

10

PDR1

11

VDDA

12

TIMER

13

PWM

14

ISEN

15

OVPT

16

ENA

IC801

NDR2

8

GNDP

7

PDR2

6

GNDA

5

RT1

4

CT

3

SST/CMP

2

VSEN

1

F1

C819

5PF D

C815

100P J

TP801

TP802

R815

2.2K

7

3

.

R819

100K

6

T 801

.

5

C820

470P J

4

.

8

F3

C821-2

C821

5PF D

R820

20K F

2

.

1 R821

100K

C822

470P J

R822

20K F

C816

100P J

R816

2.2K

K

D809

LL4148

A

C831

0.22U K

R834

1M

K

R831

511 F

D801

BAV99

A

TP803

TP804

1

CN801

1

2

2

2K62272102

1

CN802

1

2

2

2K62272102

K

D805

BAV99

A

C814

0.033U K

R827

365 F

Fig. 2

Fig. 2 shows the feedback circuit consists of a lamp, R816, D805, R827 and C814.

With the lamp current through D805, a half sine-waveform voltage signal is produced.

We may get the Maximum value through R827/C814.

After OZ9933 gets the feedback voltage signal from PIN14, the duty of the full-bridge driver outputs is decided.

Appendix 1 – Screw List / Torque

STANDARD SCREW TORQUE SPEC.

ITEM P/N

1 8F.205B4.019

3

5

8F.EA324.6R0

6K.L8810.001

8 8F.00518.100

SCRW TAP FH M3*6L ZN

ASSY SCREW M4*8L

FP726A NLK ISU

(8F.5A456.8R0+4B.L7212.0

01)

DESCRIPTION

SCRW MACH HEX #4-

40*0.3" N

SCRW TAP W/FL

M3*10L(S3.8)ZN

9 8F.00003.143 SCRW TAP PAN #4-40*3/8

MOUNTING

MATERIAL

TORQUE

(KG-CM)

HOLE

SIZE

(MM)

Screw

Head

Metal;

D-SUB;DVI

Connector

Metal

Metal to metal

Plastic to metal

Metal

5.0±0.6 5.0±0.6 #4-40

Side mount:

3±0.6

Other:

4±0.6

None tread

：

8

～

10

Have tread:

6

～

8

M3*0.5 #2

Φ 2.68±0.0

3

#2

Metal

Metal to metal

Plastic to metal

Metal

Metal to metal

Plastic to metal

9.0±1.0 M4*0.7 #2

9.0±1.0 M4*0.7 #2

Metal

Metal to metal

Plastic to metal

PCB to metal

Metal

Metal to metal

Metal

Metal to metal

Plastic to metal

SPEAKER to metal

None tread

：

8

～

6

10

Have tread:

～

8

Aluminum:

Æ2.68±0.0

3

4~5

None tread

：

8

～

10

Have tread:

6

～

8

Aluminum:

Æ2.68±0.0

3

4~5

None tread

：

8

～

10

Have tread: Æ2.68±0.0

6

～

8 3

Aluminum:

4~5

#2

#2

#2

Aluminum

(Heatsink) 3.3±0.3 Φ 2.6±0.03 #2

11 8F.VZ526.6R0

SCRW TAP FLAT+EXT

M4*6L ZN-W

13 8F.5A456.8R0

SCRW MACH FLAT M4*8L

C-ZN NYLO

15 8F.XA324.5R0 SCRW TAP M3*5L B-ZB

Aluminum

(Heatsink)

Metal

Metal to metal

Metal

Metal to metal

Plastic to metal

Metal

Metal to metal

Plastic to metal

Metal

Metal to metal

Plastic to metal

Metal

Metal to

Plastic

Metal

Metal to metal

Plastic to metal

None tread

：

8

～

10

Have tread:

6

～

8

Φ 2.68±0.0

3

Aluminum:

4~5

10±1.0

#2

M4*0.7 #2

6~8

5.0±1.0

Φ

9.0±1.0 M4*0.7 #2

Φ

2.68±0.0

3

2.35±0.0

5

#2

#2

Metal

Metal to metal

Plastic to metal

Metal

Metal to metal

Plastic to metal

Metal

Metal to

Plastic

Metal

Metal to Metal

Plastic to

Metal

Metal

Metal to metal

Plastic to metal

Φ 2.35±0.0

5

#2

25 8F.XA224.6R0 SCRW TAP FH M3*6L ZN

Plastic

Metal to plastic

Plastic to plastic

PCB to plastic

Plastic

Metal to plastic

Plastic to plastic

PLASTIC

Plastic

Metal to plastic

Plastic to plastic

Plastic

Metal to plastic

Plastic to plastic

PCB to plastic

Plastic

Metal to plastic

Plastic to plastic

PCB to plastic

Plastic

Metal to plastic

Plastic to plastic

PCB to plastic

Metal

Metal to metal

Plastic to metal

Plastic

Metal to plastic

Plastic to plastic

4.0±0.5 Φ 2.0±0.05 #1

5.0±1.0

4.5±0.5

4.5±0.5

4.0±0.5

2.0±0.5

2.0±0.5

8~10

Φ 2.35±0.0

5

Φ 2.35±0.0

5

Φ 2.35±0.0

5

Φ 2.68±0.0

3

Φ 1.75±0.0

5

Φ 1.75±0.0

Φ

5

3.45±0.0

5

#2

#2

#2

#2

#1

#1

#2

Appendix 2

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Physical Dimension Front View and Side view

Fig. 1 Physical Dimension Front View and Side view

Fig. 2 Appearance Description

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