Product Service Manual – Level 1~2 - Diagramasde.comdiagramasde.com/diagramas/otros2/benq_lcd_g925hda_version_1st.pdfenvironment, contact your nearest BenQ service center for assistance

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Applicable Country & Regions: Global

Service Manual for BenQ:

LCD G925HDA

(D-SUB + Glossy Chassis

Colors)

P/N: 9H.L2WLA.T8x

Product Service Manual – Level 1~2

Version: 1st

Date:03-17-2010

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 (Mar. 2010) © Copyright BenQ Corporation 2010. All Right Reserved.

http://esupport.benq.com/�

18.5″ LCD Color Monitor BenQ G925HDA

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Content Index

1. About this Manual ................................................................................................................................................... 5

1.1 Important ............................................................................................................................................................ 5

1.2 Trademark .......................................................................................................................................................... 5

2. Introduction ............................................................................................................................................................. 6

2.1 RoHS (2002/95/EC) Requirements – Applied to all countries require RoHS. .................................................... 6

2.2 Safety Warning and Notice ................................................................................................................................. 6

2.3 Compliance Statement ....................................................................................................................................... 7

3. General Description ................................................................................................................................................ 8

4. Related service information................................................................................................................................... 8

5. Product Overview ................................................................................................................................................... 9

5.1 Monitor Specifications ........................................................................................................................................ 9

5.2 Packing ............................................................................................................................................................. 11

Level 1 Cosmetic / Appearance / Alignment Service ............................................................................................ 13

Visual Inspection & Cleaning .................................................................................................................................. 13

Software/Firmware Upgrade Process .................................................................................................................... 13

Level 2 Circuit Board and Standard Parts Replacement ...................................................................................... 27

Product Exploded View .......................................................................................................................................... 27

Six Angles’ View ..................................................................................................................................................... 29

Product Disassembly .............................................................................................................................................. 30

Block Diagram ........................................................................................................................................................ 34

Schematic Diagram ................................................................................................................................................ 36

Troubleshooting ...................................................................................................................................................... 44

PCB LAYOUT ......................................................................................................................................................... 50

Appendix 1 – Screw List / Torque ........................................................................................................................... 57


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Abbreviations & Acronyms

A

ADC Analog to Digital Converter

AFC Automatic Frequency Control: control signal used to tune to the correct frequency

B

BenQ BenQ Corporation

BTSC Broadcast Television System Committee

C

CPU Central Process Unit

CVBS Composite Video Blanking and Synchronization

D

DLP Digital Light Processing / Texas Instruments®

DMD Digital Micro mirror Device

DRAM Dynamic RAM

DVI Digital Visual Interface

DVI-D Digital Visual Interface-digital

DVI-I Digital Visual Interface-Integrated

E

EEPROM Electrically Erasable and Programmable Read Only Memory

F

FLASH FLASH memory

G

G-TXT Green Teletext

H

HDMI High Definition Multimedia Interface, digital audio and video interface

HP Head Phone

I

I2C Integrated IC bus

L

LED Light Emitting Diode

LVDS Low Voltage Differential Signal, data transmission system for high

M


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MOSFET Metal Oxide Semiconductor Field Effect Transistor

N

NC Not Connected

NVM Non Volatile Memory: IC containing TV related data (for example, options)

O

OSD On Screen Display

P

PC Personal Computer

PCB Printed Circuit Board (or PWB)

R

RC Remote Control transmitter

RGB Red, Green and Blue. The primary color signals for TV. By mixing levels of R, G

and B, all colors (Y/C) are

ROM Read Only Memory

S

SDA Data signal on I2C bus

SDRAM Synchronous DRAM

SW Sub Woofer / Software

T

THD Total Harmonic Distortion

V

VGA Video Graphics Array

Y

YPbPr Component video (Y= Luminance, Pb / Pr= Color difference signals B-Y and R-Y,

other amplitudes w.r.t. to YUV)

Y/C Video related signals: Y consists of luminance signal, blanking level and sync; C

consists of color signal.


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1. About this Manual

The purpose of Service Manual is to provide a guide line to engineers to repair different models. The appearance

and capability is introduced in this Service Manual. It is better for repair engineer to have a rough idea of this model

through reading the Service Manual. Please do pay attention to the item part of the disassembly when repair the

machine and also do the protection of panel any time. When repairing the circuit board, please follow the

requirement of RoHS and refer to the circuit diagram and repairing process that attached in the Service Manual.

The method of firmware updated, the way of using the menu and some information that may be used when

repairing are also attached in the Service Manual that provide repair engineer various choice.

1.1 Important

Only trained service personnel who are familiar with this BenQ Product shall perform service or

maintenance to it. Before performing any maintenance or service, the engineer MUST read the “Important

Safety Information”.

1.2 Trademark


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2. Introduction

This section contains general service information, please read through carefully. It should be stored for easy

access place.

2.1 RoHS (2002/95/EC) Requirements – Applied to all countries require RoHS.

The RoHS (Restriction of Hazardous Substance in Electrical and Electronic Equipment Directive) is a legal

requirement by EU (European Union) for the global electronics industry which sold in EU and some counties also

require this requirement. Any electrical and electronics products launched in the market after June 2006 should

meet this RoHS requirements. Products launched in the market before June 2006 are not required to compliant

with RoHS parts. If the original parts are not RoHS complaints, the replacement parts can be non ROHS

complaints, but if the original parts are RoHS compliant, the replacement parts MUST be RoHS complaints.

If the product service or maintenance require replacing any parts, please confirming the RoHS requirement before

replace them.

2.2 Safety Warning and Notice Installation

1. Do not use your monitor under any of the following environmental conditions:

• Extremely high or low temperature, or in direct sunlight

• Dusty places

• Highly humid, exposed to rain, or close to water

• Exposed to vibrations or impacts in places such as cars, buses, trains, and other rail vehicles

• Near heating appliances such as radiators, heaters, fuel stoves, and other heat-generating items (including

audio amplifiers)

• An enclosed place (such as a closet or bookcase) without appropriate ventilation

• An uneven or sloping surface

• Exposed to chemical substances or smoke

2. Do not block vents and openings by clothes or curtains.

3. Carry the monitor carefully.

4. Do not place the monitor face down on the floor or a desk surface directly. Otherwise, scratches on the panel

surface may occur.

5. Do not place heavy loads on the monitor to avoid possible personal injury or damage to the monitor.

6. Ensure that children do not hang or climb onto the monitor.

7. Keep all packing bags out of reach of children.


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Operation

1. To protect your eyesight, please refer to the user manual to set the optimal screen resolution and the viewing

distance.

2. To reduce eye fatigue, take a break on a regular basis while using the monitor.

Avoid taking either one of the following actions for a long time. Otherwise, burn marks may occur.

• Use the monitor in the aspect ratio of 4:3, 5:4, or 16:10.

• Place a still image (such as an OSD menu, fixed text or image) on the screen.

3. To avoid possible damage to the monitor, do not touch the monitor panel by hand, pen, or any other sharp

objects.

4. Excessively frequent plug and unplug of video connectors (D-sub) may cause damage to the monitor.

5. This monitor is designed mainly for personal use. If you want to use the monitor in a public place or a harsh

environment, contact your nearest BenQ service center for assistance.

6. To avoid possible electric shock, do not dissemble or repair the monitor.

7. If a bad smell or an abnormal sound appears to come from the monitor, contact your nearest BenQ service

center for assistance immediately.

Cleaning

1. Ensure that the power is unplugged before cleaning your monitor

2. Use a monitor cleaner and a soft cloth to clean your monitor.

3. Do not use solvents such as alcohol to clean your monitor.

Power

1. To avoid possible damage to the monitor, do not use it in a region where power supply is unstable.

2. Ensure that the power cord is connected to a grounded power outlet before turning on the monitor.

3. Use only the power cord provided by BenQ.

4. Never use a power cord that appears to be damaged or frayed.

5. To avoid possible danger, observe the total electric load when using the monitor with a (multi-outlet) extension

cord.

6. Always turn off the monitor before unplugging the power cord.

2.3 Compliance Statement

Caution: This Optical Storage Product contains a Laser device. Refer to the product specifications and your local

Laser Safety Compliance Requirements.


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3. General Description

This new LCD (Liquid Crystal Display) monitor BenQ G925HDA offers numerous features and functions, for

example:

• TFT display (Thin Film Transistor; active matrix)

• Minimal space requirements thanks to slim casing

• Optimum ergonomic characteristics (totally distortion-free, excellent picture definition and color purity right into

the corners)

• Contrast ratio 20000:1, brightness 250nits

• MAX. resolution (1366x768)

• Presentation of up to 16.7 M colors (in conjunction with an appropriate graphics card)

• Automatic scanning of horizontal frequencies from 30 to 63 KHz and refresh rates (vertical frequencies) from 50

to 76 Hz (absolutely flicker-free)

• Digital screen controller with microprocessor for storing 15 different display modes

• Freely adjustable color alignment for matching the screen colors to the colors of various input and output devices

• Convenient operation via integrated OSD (On-Screen-display) menu

• VESA-DDC compatibility

• Plug & play capability

• Power management for reducing power consumption when the computer is not in use

This operating manual contains important information you require to start up and run your LCD monitor.

This specification defines the requirements for the 18.5″ MICROPROCESSOR based Multi-mode supported high

resolution color LCD monitor. This monitor can be directly connected to general 15-pin VGA connector, also

supports VESA DPMS power management and plug & play function.

Additional information

Due to the nature of liquid crystal display (LCD) technology, the picture resolution is always fixed. For the best

display performance, please set the display resolution to 1366x768 pixels with an aspect ratio of 16:9. This is called

“Native Resolution” or maximal resolution - that is, the clearest picture. Lower resolutions are displayed on a full

screen through an interpolation circuit. Image blurring across pixel boundaries can occur with the interpolated

resolution depending upon the image type and its initial resolution.

4. Related service information

This Service Manual contains general information. There are 2 levels of service:

Level 1: Cosmetic / Appearance / Alignment Service

Level 2: Circuit Board or Standard Parts Replacement

Service Web Site

eSupport URL: http://esupport.benq.com

http://esupport.benq.com/�


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5. Product Overview

5.1 Monitor Specifications

G925HDA

Configuration (D-sub)

Panel / Display

Panel Type (TN / VA / IPS) TN

Panel Size 18.5"W(2 lamps)

Display Area 403.4 x 254.6

Max. Resolution 1366x768

Pixel Pitch 0.10*RGB(H)mm x 0.30(V)mm

Brightness (Typ.) 200 nits

Contrast Ratio (Typ.) / DCR (Min.) 600:1 (Panel) /40000:1 (DCR TYP)

Min :20000:1

Viewing Angle (H/V), CR≧10 90/50

Display Colors 16.7M (6bit+Hi-FRC)

Response Time 5ms (Tr+Tf)

GtG response Time N/A

NTSC ratio 0.72

Panel maker LGD

Video

BenQ SenseyeTM Technology Yes

BenQ SenseyeTM Preset Modes 5 Modes (by hotkey) : Standard / Movie /

Dynamic / Photo / s-RGB

Color Temperature Selection Normal (6500°K) / Reddish (5800°K) /

Bluish (9300°K) / User Mode

Hor. Frequency (KHz) 30~63KHz

Ver. Frequency (Hz) 50Hz~76Hz

Video Bandwidth (MHz) 110Mhz

Audio Speakers (built-in) N/A

Input/Output

PC Video Input D-sub

Audio line in No

Earphone Jack No

Power Supply

Voltage Rating AC: 100~240V (Built-in)

Power-On Mode 23W

Standby Mode <1W


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Power Off Mode <0.5W

Mechanical Design

Chassis Colors Silver Black/Black

Carton Original carton with BE flute

Power LED Green (ON)/ Amber (Standby)

Tilt (Up / Down) 20° ~ -5°

VESA Wall Mount 100 x 100mm

Kensington Lock Yes

Physical Dimension (WxHxD) TBD

Box Dimension (WxHxD) TBD

Net Weight (Esti.) TBD

Gross Weight (Esti.) TBD

Container Loading (40') 2070

Container Loading (20') 990

Multi-language Support OSD

17 Languages (English / Francais /

Deutsch / Italiano / Espanol / Polish /

Czech / Hungarian / Serbo-croatian /

Romanian / Netherlands / Russian /

Swedish / Protuguese / Japanese /

Chinese / S-Chinese)

Other feature Vista Vista Basic

Accessories VGA cable, power cord, warranty card,

quick start guide, CD manual

Regulation Approvals Refer to the worksheet "RFQ-Regulatory"


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5.2 Packing When packing the monitor into the carton, please follow the pictures as below.

1. Using the EPE bag to pack the monitor without base

2. Using the EPS to pack the monitor


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3. Putting the user manual and power cord in the position as the picture shows below.

User manual Power cord


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Level 1 Cosmetic / Appearance / Alignment Service

Visual Inspection & Cleaning • Cleaning. Always unplug your monitor from the wall outlet before cleaning. Clean the LCD monitor surface with a

lint-free, non-abrasive cloth. Avoid using any liquid, aerosol or glass cleaners.

• Slots and openings on the back or top of the cabinet are for ventilation. They must not be blocked or covered.

Your monitor should never be placed near or over a radiator or heat source, or in a built-in installation unless

proper ventilation is provided.

• Never push objects or spill liquid of any kind into this product.

Software/Firmware Upgrade Process

Hardware Requirement:

1) ISP board (715GT034-D for BenQ)

2) Printer cable(x1), VGA cable (x1), 12V DC power source

3) PC or notebook with parallel (printer) port x 1

Software Requirement:

1) PORT95NT.exe

2) Realtek_ISP_Tool 3Bank For BenQ ver4.3.exe

3) TPVDDC.exe

Step 1: Install the “PORT95NT.exe”

1. Double click the icon to install the “PORT95NT”, and then restart the computer.

Step 2: Writing the ISP data

1. Press the button 1 and connect the ISP board as follow:

Connect to PC LPT 12V DC input

Connect to the VGA port of the monitor

1


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2. Open the software “Realtek_ISP_Tool 3Bank For BenQ ver4.3.exe”, and then click “RTD 2122 ISP”

Note: The process of the ISP writing takes G2020HD for example.

3. Click “Main1: 64k”, and choose the file “BenQ G2020HD 2545LH _SEC.H00”


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4. Click “Open”, it will show the below picture

5. Click “Main2: 64~128K”, and choose the file “BenQ G2020HD 2545LH _SEC.H01”

6. Click “128~160”, and choose the file “BenQ G2020HD 2545LH _SEC_EXTEND.hex”


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7. Click , if it is successful it will show the below pictures:


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Adjustment / Alignment Procedure The Control Panel

1. “AUTO”: Adjust vertical position, phase, horizontal position and pixel clock automatically.

2. “MENU” key: Activate OSD main menu and return to the previous menu or exit OSD.

3. ◄ /Mode key: For Left/Decrease adjustment. The key is the hot key for Mode.

4. ► /Contrast/Brightness key: For Right/Increase adjustment. The key is the hot key for Brightness and Contrast.

5. “ENTER” key: Enter sub menus and select items. For models with DVI inputs, this key is also the hot key for

Input.

6. “Power”: Turn the power on or off.

OSD = On Screen Display.

The hot keys will display a graduated scale for adjusting the value of that setting, and will only operate while the

OSD menu is not currently displaying. Hot key displays will disappear after a few seconds of no key activity.

Hot Key Mode The monitor keys perform as hot keys to provide direct access to particular functions whenever the menu isn't

currently displaying on-screen.

Brightness and Contrast hot keys

Press the ► key to display the Brightness and Contrast indicators. Further press the the ◄or ► keys, then the

ENTER key to select Brightness or Contrast. The ► key will increase the level, while the ◄ key will decrease the

level.

To exit, press the MENU key.


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Mode Hot Key

Press the ◄ key continually to switch between the 6 modes for the main window, including Standard, Movie,

Dynamics, Photo, and sRGB. The setting will take effect immediately.

Input Hot Key

Press the ENTER key to toggle between different PC video signal inputs that may be connected to your monitor.

The setting will take effect immediately.

Main Menu Mode You can use the OSD (On Screen Display) menu to adjust all the settings on your monitor.

Press the MENU key to display the following main OSD menu.

There are five main OSD menus:

1. Display

2. Picture

3. Picture Advanced

4. System

Use ◄ (left) or ► (right) keys to highlight a menu item, and press the ENTER key to enter the Menu item settings.

The OSD menu languages may differ from the product supplied to your region.


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Display Menu

1. Press the MENU key to display the main menu.

2. Press ◄ or ► keys to select DISPLAY and then press the ENTER key to enter the menu.

3. Press ◄ or ► keys to move the highlight to a menu item and then press the ENTER key to select that item.

4. Press ◄ or ► keys to make adjustments or selections.

5. To return to the previous menu, press the MENU key.

Item Function Operation Range

Auto

Adjustment

Optimizes and adjusts the screen settings automatically for you.

The AUTO key is a ‘hot key’ for this function.

When you connect a digital video output using a digital (DVI) cable to your monitor, the AUTO key and the Auto

Adjustment function will be disabled.

Press the ENTER

key to select this

option and make

adjustment.

H. Position Adjusts the horizontal position of the screen image. Press ◄ or ►

keys to adjust the

value.

0 to 100

V. Position Adjusts the vertical position of the screen image. 0 to 100

Pixel Clock

Adjusts the pixel clock frequency timing to synchronize with the

analog input video signal. Not applicable to a digital input signal. 0 to 100

Phase Adjusts the pixel clock phase timing to synchronize with the

analog input video signal. Not applicable to a digital input signal. 0 to 63

Picture Menu


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2. Press ◄ or ► keys to select PICTURE and then press the ENTER key to enter the menu.


4. Press ◄ or ► keys to make adjustments or selections. 5. To return to the previous menu, press the MENU button.


Brightness Adjusts the balance between light and

dark shades.

Press the ► key to increase the brightness

and press the ◄ key to decrease the

brightness.

0 to 100

Contrast Adjusts the degree of difference

between darkness and lightness.

Press the ►key to increase the contrast and

press the ◄ key to decrease the contrast. 0 to 100

Sharpness Adjusts the clarity and visibility of the

edges of the subjects in the image.

Press the ► key to improve the crispness of

the display and press the ◄ key to have

softness effect on the display.

1 to 5

Color - Press ENTER to enter the Color menu.

Normal

Allows video and still photographs to

be viewed with natural coloring. This is

the factory default color.

Press ◄ or ► keys to select this option.

Bluish

Applies a cool tint to the image and is

factory pre-set to the PC industry

standard white color.

Reddish

Applies a warm tint to the image and is

factory pre-set to the news print

standard white color.

User Mode

Tailors the image color tint. The blend

of the Red, Green and Blue primary

colors can be altered to change the

color tint of the image.

Decreasing one or more of the colors

will reduce their respective influence

on the color tint of the image. (e.g. if

you reduce the Blue level the image

will gradually take on a yellowish tint.

If you reduce Green, the image will

become a magenta tint.)

Press ◄ or ► keys and the ENTER key to

select Red, Green, or Blue. Then use Press

◄ or ► keys to make the color adjustments.

• Red

(0 to 100)

• Green

(0 to 100)

• Blue

(0 to 100)

Hue: Adjustment the degree of how

we perceive colors Press ◄ or ► keys to adjust the settings. 0 to 100

Saturation: Adjust the purity degree of

colors. Press ◄ or ► keys to adjust the settings. 0 to 100

The above options for Hue and Saturation are available only if the signal source is

Component Video or HDMI.


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Reset

Color

Resets the User Mode custom color

settings to the factory defaults. Press ◄ or ► keys to adjust the settings.

YES

NO

Press MENU to leave the Color menu.

Dynamic

Contrast

(available

when the

Picture

Mode is set

to Photo,

Dynamics,

or Movie)

The function is to automatically detect

the distribution of an input visual

signal, and then to create the optimal

contrast. The higher the level, the

more detailed picture possible will be

displayed.

Press the ENTER key to select this option.

Press ◄ or ► keys to change the settings. 0 to 5

Picture Advanced Menu


2. Press ◄ or ► keys to select PICTURE ADVANCED and then press the ENTER key to enter the menu.



5. To return to the previous menu, press the MENU button.


Picture Mode

Selects a picture mode that best suits the type

of images shown on the screen.

• Standard - for basic PC application.

• Movie - for viewing videos.

• Dynamics - for viewing landscape-specific

videos and playing games.

• Photo - for viewing still images.

• sRGB - for better color matching

representation with the peripheral

devices, such as printers, DSCs, etc.

Press ◄ or ► keys to

change the settings.

Standard

Movie

Dynamics

Photo

sRGB


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Senseye Demo

(available when

the Picture Mode

is set to Photo,

Dynamics, or

Movie)

Displays the preview of screen images under

the selected mode from Picture Mode. The

screen will be divided into two windows; the left

window demonstrates images of Standard

mode, while the right window presents the

images under the specified mode.



ON

OFF

Display Mode

This feature is provided to allow aspect ratio’s

other than 16:9 to be displayed without

geometric distortion.

• Full - Scales the input image to fill the screen.

Ideal for 16:9 aspect images.

• Aspect - The input image is displayed without

geometric distortion filling as much of the

display as possible.



• Full

• Aspect

System menu


2. Press ◄ or ► keys to select SYSTEM and then press the ENTER key to enter the menu.



5. To return to the previous menu, press the MENU button.


Input

Use this to change the input to that

appropriate to your video cable

connection type.

Press ◄ or ► keys to change the

setting. D-sub (VGA)

OSD Settings - Press ENTER to enter the OSD Settings menu.


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Language Sets the OSD menu Language.


settings.

The language options

displayed on your OSD may differ

from those shown on the right,

depending on the product supplied

in your region.

• English

• French

• German

• Italian

• Spanish

• Polish

• Czech

• Hungarian

• Serbo-Croatian

• Romanian

• Dutch

• Russian

• Swedish

• Portuguese

• Japanese

• Traditional

Chinese

• Simplified

Chinese

H. Position Adjusts the horizontal position of

the OSD menu.


settings.

0 to 100

V. Position Adjusts the vertical position of the

OSD menu. 0 to 100

Display Time Adjusts the display the OSD menu. 5 / 10 / 15 / 20 /

25 / 30 sec

OSD Lock

Prevents all the monitor settings

from being accidentally changed.

When this function is activated, the

OSD controls and hotkey

operations will be disabled.


settings.

To unlock the OSD controls

when the OSD is preset to be

locked, press and hold the

"MENU" key for 15 seconds to

enter the "OSD Lock" option and

make changes.

Alternatively, you may use ◄ or ►

keys to select "NO" in the "OSD

Lock" submenu from the "OSD

Settings" menu, and all OSD

controls will be accessible.

YES

NO

Press MENU to leave the OSD Settings menu.

DDC/CI* Allows the monitor settings to be

set through the software on the PC.

Press the ENTER key to select

this option. Press ◄ or ► keys to

ON

OFF


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Information Displays the current monitor

property settings.

Press the ENTER key to select

this option.

Reset All

Resets all mode, color and

geometry settings to the factory

default values.


settings.

YES

NO

*DDC/CI, short for Display Data Channel/Command Interface, which was developed by Video Electronics

Standards Association (VESA). DDC/CI capability allows monitor controls to be sent via the software for remote

diagnostics.


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Display Timing Table

Pixel Format

Hor.

Frequency

(kHz)

Ver.

Frequency

(Hz)

Pixel Clock

(MHz) Source

640 x 350 31.47 70.09 25.18 VGA

640 x 480 31.47 59.94 25.175 VGA

640 x 480 37.50 75.00 31.500 VGA

720 x 400 31.47 70.08 28.321 VGA

800 x 600 37.88 60.32 40.000 VESA

800 x 600 46.88 75.00 49.500 VESA

832 x 624 49.72 74.55 57.283 MAC

1024 x 768 48.36 60.00 65.000 VESA

1024 x 768 60.02 75.03 78.750 VESA

1024 x 768 68.68 85.00 94.500 VESA

1152 x 720 44.86 60.00 66.750 CVT 0.83MA, DVT 16:10

1152 x 870 68.68 75.06 100.000 MAC

1152 x 900 61.80 65.96 92.978 SUN

1280 x 768 47.396 60.0 68.25 CVT 0.98M9-R

1280x800 49.702 59.81 83.5 CVT-8

1280x800 62.8 75 106.5

1280x720 45.00 59.94 74.25

1280x720 44.77 59.86 74.5

1280x720 56.46 74.78 95.75

1280 x 960 60.00 60.00 108.000 VESA

1280 x 1024 63.98 60.02 108.000 VESA

1280 x 1024 79.98 75.02 135.000 VESA

1280 x 1024 91.15 85.02 157.500 VESA

1360x768 47.7 60.01 85.5 VESA

1366x768 47.76 59.85 85.5

1440 x 900 55.94 59.89 106.500 CVT 1.30MA

1440x900-R 55.94 59.89 88.75

1440 x 900 70.6 75 136.75

• Image disruption may occur as a result of signal frequency differences from graphic cards which do not

correspond with the usual standard. This is not, however, an error. You may improve this situation by altering an

automatic setting or by manually changing the phase setting and the pixel frequency from the “DISPLAY” menu.

• To extend the service life of the product, we recommend that you use your computer's power management

function.


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Factory OSD Menu Turn off the monitor, keep pressing the “MENU” buttons, and turn on the monitor, then when we press the MENU

button, the factory OSD will be at the left top of the panel as below (takes E2220HD for example):

BenQ Service Page

1. Trigger method: press “Menu” key and Power on.

2. Press the menu key will display the service page

3. Press the menu key will close the service page.

4. Power off will quit the service mode

5. At the service mode, the key function is same as normal OSD define.

6. The timer can only reset at the service mode by “Timer Reset” (Timer Reset moves to SI factory Area). And

need to have a warning message to double confirm the reset function. The timer should record up to 99999

hours and will be reset once launch.

7. Add two selected items for DVI HDCP at Service menu HDMI HPD: To enable the hot plug pin detection. (HDMI port default: On)

DVI HDCP: To disable the hot plug pin detection. (DVI port default: on)

8. Add BenQ logo on/off item, the default is “on”

9. Add the auto power on item, the default is “off ”

10. Add the timer reset warning message, when select the timer reset item, then the warning message will display

and need to confirm it again and the default is “No”.

11. Panel type define need to have the panel version.

12. F/W version need to define the dual or analog model.


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Level 2 Circuit Board and Standard Parts Replacement

Product Exploded View

Note: The parts information listed below are for reference only, and are subject to change without notice. Please

go to http://cs.tpv.com.cn/hello1.asp for the latest information.

Item Part NO. Description QTY Unit

1 Q34G0543ADP 3B0100 BEZEL(L185W-9benq) 1 PCS

2 Q33G0288 2 1C0100 LENS 1 PCS

3 Q33G0287ADP 1L0100 KEY PAD 1 PCS

4 Q15G0405801 MAINFRAME 1 PCS

5 Q34G0544ADP EB0130 REAR COVER18.5" 1 PCS

6 Q33G0289ADPA1L0100 LOGO COVER 1 PCS

7 Q34G0545ADP 1B0100 Stand-Front 1 PCS

8 Q37G0125011 hinge 1 PCS

9 Q34G0546ADP 1B0130 Stand-Back 1 PCS

10 A33G0251ADP 2L0100 CABLE CLIP 1 PCS

11 Q34G0547ADP 1B0101 BASE 1 PCS

12 Q12G6082 1 FOOT PAD 1 PCS

13 Q23G3178881 1A LOGO for black 1 PCS

14 P15G8299 3 BKT-VESA 1 PCS

15 750GLU185X1854N000 PANEL M185XW01 V80D SH AUO 1 PCS

16 715G3327M02001004S MAIN BOARD 1 PCS

http://cs.tpv.com.cn/hello1.asp�


28

18 715G2852 3 4 POWER BOARD 1 PCS

19 715G3367 2 KEY BOARD 1 PCS

SCREW

Item Part NO. Description QTY Unit

S1 0M1G 130 6120 PANEL& MAINFRAME 3 PCS

S2 0M1G1030 6120 PCB & MAINFRAME 4 PCS

S3 AQ1G1740 12120 HINGE & STAND 2 PCS

S4 0M1G1740 8 47 CR3 HINGE & STAND 1 PCS

S5 AM1G1740 12 47 CR3 HINGE & STAND&MAINFRAME 2 PCS

ART.

Part NO. Description QTY. Unit

Q44G8015101 EPS 1 PCS

Q44G8015201 EPS 1 PCS

Q44G8015624 1A CARTON 1 PCS


29

Six Angles’ View


30

Product Disassembly

1) Remove the base

Place the monitor face down on a smooth surface. Be careful to avoid scratch and injury during the process of

uninstall. And then remove the base.

2) Remove the stand

Be careful to avoid scratch and injury during the process of uninstall. And then remove the screws in red to remove

the base.


31

3) Remove the rear cover

Remove the rear cover as follow:


32

4) Remove the key board from the bezel.

5) Remove the main frame from the panel.


33

6) Remove the boards from the main frame.

7) The panel


34

Block Diagram

Main Board

OSD Control

Interface

(CN401)

MCU

MTV416GMV

(U402)

Crystal 24.576MHZ

(X401)

D-Sub Connector

(CN301)

H sync

V sync

RGB

Panel Interface

(CN601)

Key Control Interface

(CN202)

Crystal 24MHZ

(X401)

Scalar IC RTD2035L

(U501) MCU RTD2122L-LF

(U401)

DDC1_SCL

DDC1_SDA


35

Power Board

DIM

EMI filter

Start Circuit: R904, R932, R933

PWM Control IC

Transformer AC input

12V

ON/OFF Control Feedback

Circuit

Transformer MOSFET

Lamp

ON/OFF

5V

Bridge Rectifier and Filter

Feedback Circuit

Rectifier diodes

CN902

Output Circuit

PWM

Control IC

（IC801） Over Voltage


36

Schematic Diagram Main Board

Volume# {4}

LED_R

LED_G# {4}

FB202

NC

Volume#

C2100.1uF/16V

* BKLT-EN High ON(3.3V)

DIM# {4}

PANEL_ID# {4}

R207120R 1/16W

C206

0.1uF/16V

T89ARPMCFWBQNN 1.0

BenQ G922HDAL B

3 7Wednesday , December 16, 2009

715G2498-2A-AO<称爹>

3.POWER

G2498-2A-AO-X-16-091216

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹

T P V ( Top Victory Electronics Co . , Ltd. )

Key Component

絬隔瓜絪腹

+ C203100UF25V

CMVCC

Mute {4}

INV_ON# {4}

C201

0.1uF/16V

KEY1 {4}

ZD201NC

12

R208120R 1/16W

ZD203NC

12

BKLT-VBRI

R201200 1 / 1 6 W

Near to Connect

KEY1

FB201

120

Panel ID(3.3V PWM)

CMVCC

Back lightDimming(3.3V PWM)

MVCC

Mute

R2024K7 1/16W

BKLT-EN

C_PANEL_INDEX

VCC3

LED_G

Q205PMBS3906

CN201

CONN

123456789

C209

0.1uF/16V

CMVCC

U201

AP1117E33LA

1

23

VS

S

VOUTVIN

CMVCC

LED_G

Q202PMBS3904

VCC3

R210 10K 1/16W LED_R# {4}KEY0 {4}

C204

0.1uF/16V

R213 10K 1/16W

C205

0.1uF/16V

VCC3

+C202

100UF25V

LED_R

POWER_KEY#

Q204PMBS3906

ZD202

NC

12

CN202

CONN

123456

KEY0

POWER_KEY# {4}

BKLT-EN


37

VGA_B-

R426 22R 1/10W 5%

C3085pF/50V

R3052.2K 1 / 1 6 W

VGA_G+

ZD305

RLZ5.6B

12

R306 100R 1/16W

C302

22pF

VGA_R+ZD307

RLZ5.6B

12

RTD_G- {5}

R318200R 1/10W 5%

C309

0.047uF

RTD_G-

VGA_B+

C301

0.047uF

VGA_G-V

GA

_B+

R311 100R 1/16W

R310

75R 1/16W

R3042.2K 1 / 1 6 W

C3055pF/50V

R312 100R 1/16W

CN301

DB15

162738495

11

12

13

14

1510

1716

DSUB_V

R313 100R 1/16W

RTD_G+

RTD_B+

R428 22R 1/10W 5%

RTD_G+ {5}

VGA_G-

R309 100R 1/16W

C303

22pF

CMVCC

DDC1_SCL{4}

DDC1_SDA{4}

RTD_B- {5}

RTD_V {5}

VGA_B-

C306

0.047uF

VGA_R-

RTD_H {5}

C307

0.047uF

C4140.1uF/16V

R316200R 1/10W 5%

VGA_R+

C316

0.1uF/16V

VGA_CONV

GA

_R+

R315 100R 1/16W

VGA_B+

C311

0.047uF

RTD_R-

FB303

BEAD1 2

R317200R 1/10W 5%

R303 100R 1/16W

C4130.1uF/16V

C315

0.1uF/16V

RTD_B+ {5}

DSUB_5V

D303BAV99

3

12

FB302

BEAD1 2

FB301

BEAD1 2

DSUB_CONNECT {4}

VGA_R-

D302BAV99

3

12

ZD301

RLZ5.6B

12

DSUB_5V

VGA_G+

D301BAV99

3

12

ZD304

RLZ5.6B

12

T89ARPMCFWBQNN 1.0

BenQ G922HDAL B


715G2498-2A-AO<称爹>

4.INPUT

G2498-2A-AO-X-16-091216

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

ZD303

RLZ5.6B

12

RTD_B-

RTD_R+

ZD302

RLZ5.6B1

2

DSUB_H

RTD_R- {5}

R320 100R 1/10W 5%

R307

75R 1/16W

C317

0.1uF/16V

RTD_R+ {5}

C3105pF/50V

R301 100R 1/16W

R319 100R 1/10W 5%

DSUB_V {4}

R314

75R 1/16W

R308 100R 1/16W

VG

A_G

+

C304

0.047uF


38

Mute

DSUB_CONNECT {3}

R4021K 1/16W

KEY1

R420 100R 1/16W

R415

6K8 1/16W

MCU_VCC

PANEL_ID#

DSUB_V1

1

C404

NC

Volume#{2}

CMVCC

PPWR_ON#

KEY1 {2}

R405

NC

D402BAV70

R40410K 1/16W

R434 100R 1/16W

R4114K7 1/16W

T89ARPMCFWBQNN 1.0

BenQ G922HDAL B

5 7Thursday , December 17, 2009

715G2498-2A-AO<称爹>

5.MCU/RTD2122

G2498-2A-AO-X-16-091216

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

RTD_SCLK

R423 1K 1/16W

PANEL_VCC

R4396K8 1/16W

VCC3

PANEL_ID#{2}

WP

Q401PMBS3904

R41610K 1/16W

R433 100R 1/16W

R410 NC

MCU_VCC

LED_G#{2}

MVCC

R424 1K 1/16W

IICSDA

D401BAT54C(NC)

1

3

2

CMVCC

DSUB_V {3}

KEY0 {2}

R422 100R 1/16WMute{2}

PPWR_ON#{6} R430 100R 1/16W

RTD_SD3/SDI {5}

MCU_VCC

X40124mhz

1 2R436

10K 1/16W

R454

1K 1/16W

MCU_VCC

RTD_SD3/SDI

R435 100R 1/16W

DSUB_CONNECT

C409NC(22pF/16V)

IICSCL

R4124K7 1/16W

R451

4K7 1/16W

DSUB_V

3

R431

6K8 1/16W

U401

RTD2122L-LF

123

4

5

6 7

8

1715

41 40 39 38 37 36 35 34 33

19

28

29

2021222324252627

16

91011121314

18

303132

4342

4445464748

P5.5/PWM5DSCL2/P5.6DSDA2/P5.7

RS

T

ASCL1/P3.0/RXD

NC

NC

ASDA1/P3.1/TXD

VS

S

XO

VC

C

P1.

0/T

2P

1.1

P1.

2P

1.3

P1.

4P

1.5

P1.

6P

1.7

NC

VSYNC

NC

P6.0/ADC0P6.1/ADC1P6.2/ADC2P6.3/ADC3

P6.4P6.5

P6.6/CLKO1P6.7

XI

P3.2/INT0P3.3/INT1P3.4/T0P3.5/T1P7.6/CLKO2P7.7

NC

NCNCNC

NC

NC

P5.0/PWM0P5.1/PWM1P5.2/PWM2P5.3/PWM3P5.4/PWM4

C40110pF

C402

NC

IICSCL

LED_R#{2}KEY0

R408 NC

Closed to X'tal

DDC1_SDA

POWER_KEY#

DIM#{2}

INV_ON#

R429 0R05 1/16W

POWER_KEY# {2}

R4383.9K OHM +-1% 1/16W

R413

4K7

1/16

W

2

DSUB_5V

Volume#

R432 100R 1/16W

BAT54C

C4030.1uF/16V

R42510K 1/16W

U403

NC

1234 5

678

NCNCNCVSS SDA

SCLWC

VCC

R427 NC/0R05 1/16WDDC1_SCL{3}

R409 NC

MCU_VCC

R414

4K7

1/16

W

C4100.1uF/16V

R407

NC

WP

CRYSTAR_OUT

R406

NC

C406

0.1uF/16V

C41110pF

MCU_VCC

RTD_SCLK {5}

INV_ON#{2}

LED_G#

DDC1_SDA{3}

IICSDA

R4033.9K 1 / 1 6 W

DIM#

R4373.9K OHM +-1% 1/16W

R401

3.9K OHM +-1% 1/16W

C412

1uF 10V

CRYSTAR_OUT {5}

MCU_VCC_S

Closed to MCU

LED_R#

DDC1_SCL

+ C40510UF50V

MCU_VCC_S

R453

1K 1/16W

U402AZ431AN-AE1


39

RT

D_S

CLK

{4}

DG

ND

RXE0-

R1.8DVCC

RXOC-

RTD_B+

DG

ND

RXOC+

RXE2-

RTD_G+{3}

RTD_B+{3}

LVDS_E5

VCC3

LVDS_E6

Q502

MMBT2907AK

VCC3

RX

E3-

CR

YS

TA

R_O

UT

{4}

RX

E2-

RXEC+

Q501MMBT2907AK

BJT

_B

+C505

22UF50V

LVDS_E0

DGND

RT

D_G

-

RXOC+

RXE1+

LVDS_E2RXE0+

BJT

_B

RT

D_S

D3/

SD

I{4

}

RT

D_R

-

C5030.1uF/16V

LVDS_E8

RXE1-

LVDS_E7

RXE3+

C506

0.1uF/16V

DGND

LVDS_E4

RTD_G-{3}

CR

YS

TA

R_O

UT

LVDS_E[0..9] {6}

R1.

8DV

CC

RTD_R-{3} R1.8DVCC

RX

E3+

TM

DS

_VD

D

RX

E2+

RXEC-

RT

D_R

+

RT

D_G

+

C507

0.1uF/16V

RXE0-RTD_H

RT

D_S

D3/

SD

I

RXE2+

RXE1+

RTD_V{3}

FB502120

1.8AVCC

RTD_V

LVDS_E3

RTD_B-{3}

LVDS_E1

FB503120

C501

0.1uF/16V

RXE1-

R1.

8DV

CC

RXOC-

R507 3.3 2 W

RXE0+

RT

D_S

CLK

RTD_R+{3}

RTD_B-

RTD_H{3}

R1.

8DV

CC

LVDS_E9

T89ARPMCFWBQNN 1.0

BenQ G920HDAL B


715G2498-2A-AO<称爹>

6.RTD2035L

G2498-2A-AO-X-16-091216

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

RXE3-

U501

RTD2035L

1

2

3

4

5

6

7

8

9

10

11

12

13 14 15 16 17 18 19 20 21 22 23 24

36

35

34

33

32

31

30

29

28

27

26

25

48 47 46 45 44 43 42 41 40 39 38 37

V1/REXT

V2/RX1P

V3/RX1N

V4/RX0P

V5/RX0N

V6/RXCP

V7/RXCN

AVS

AHS

ADC_GND

B-

B+

G-

G+

R-

R+

AD

C_V

DD

BJT

_B

VC

CK

PG

ND

TX

E3+

TX

E3-

TX

E2+

TX

E2-

TXO1-

TXO1+

TXO2-

TXO2+

TXOC-

TXOC+

TXO3-

TXO3+

TXE0-

TXE0+

TXE1-

TXE1+

V0/

RX

2N

VC

LK/R

X2P

TM

DS

_VD

D

XIN

DD

CS

CL/

PW

M0

DD

CS

DA

/PW

M1/

IRQ

SC

L

SD

A

VC

CK

PG

ND

TX

O0-

TX

O0+


40

C602

0.01uF/25V

RXE0-

FB601

120

LVDS Panel ( Normal Type )

RXE3+

RXE1+

T89ARPMCFWBQNN 1.0

BenQ G920HDAL A

7 7Thursday , December 17, 2009

715G2498-2A-AO<称爹>

7.OUTPUTG2498-2A-AO-X-16-091216

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

CMVCC

RXE3+

D

R606NC(R0805)

RXE1+

C603

0.1uF/16V

3

PANEL_VCC

LVDS_E4 R602330R 1/8WRXE2+

RXE3-

LVDS_E9

RXEC-

RXEC-

RXE0+

PANEL_VCC

RXE0-

AO3401LR603NC

PANEL_VCC

PPWR_ON#

RXE1-

1

LVDS_E1

LVDS_E7

CN601

CONN

2468101214

13579

1113

PPWR_ON#{4}

LVDS_E[0..9]{6}

Q601AO3401

S

RXE3-

G

2006-11-7 Add pull up 4K7 to MVCC

LVDS_E3

RXE2+

RXE0+

RXE1-

+ C60447UF25V

2

RXEC+

R6054K7 1/16W

LVDS_E2

Q602

PMBS3906

LVDS_E5RXE2-

RXEC+

R601

10K 1/16W

LVDS_E0

LVDS_E6

RXE2-

R604

47K1/16W

LVDS_E8


41

Power Board

12

ZD902RLZ13B

12

HS2HEAT SINK(D906_Q90G6263-6)

D915LL4148

78

910

1112

4

5

6

1

2

T901

POWER X'FMR

D916LL4148

+12V

+5V

F904

NC

C9120.001uF

F902

NC

!

R962 100 OHM 1/4W

R920100 OHM 1/4W

R946150 OHM 2W

C910NC

R922NC

R923NC

D907 NC

R921NC

!

12

HS3HEAT SINK(Q901_Q90G6263-6)

R93810K 1/8W

!

VAR901Varistor

C909470pF/25V

R91010R 1/4W

!

R9140.47 OHM +-5% 2WS

R912

220 OHM 1/4W

!

12

ZD905RLZ18B

R9273.6K OHM 1% 1/10W

C9021000pF

!

t

NR901NTCR

F903

NC

R9095.1 OHM 1/4W

!

R9302.43K OHM 1% 1/10W

C9280.01uF

12

GND1GND

!

!

C9110.1uF

+ C907100uF450V

D901FR103

R90410K OHM 1/4W L905

NC

R908

100KOHM +-5% 2WS

D900FR107

C9011000pF

R915100K OHM 1% 1/8W

R9251K 1/8W

+C921NC

!

R94033K 1/10W

12

ZD921RLZ13B

R9421K 1/10W 1%

12

ZD922RLZ5.1B

Wednesday , Nov ember 26, 2008

D903LL4148

12

ZD923NC

12

HS5SHIELD(H85G0002-1)

+5V1

C932

0.001uF

R9391K 1/8W

Q903PMBS3904

R943470R 1/8W

Q9012SK2645-54MR

+ C939NC

N.C

F905

0 OHM 1/4W

!

!

C938NC

C9061500pF2KV

!

R900

680K OHM 1/4W

R902

680K OHM 1/4WR901

680K OHM 1/4W

R93210K OHM 1/4W

!

!

!

+ C9401000UF25V

C930

0.1uF

! R948NC

C908

0.22UF

12

43

IC902PC123X2YFZOF

R924150R 1/8W

+C917

680uF/25V

D905 31DQ06FC3

+C915

470uF/16V

IC903AZ431AZ-AE1

R961 100 OHM 1/4W

R935 100 OHM 1/4W

+ C90322uF/50V

L903

1.0uH

Q904NC

C9290.001uF

R952NC

1 4

2 3

L901

30mH

C925

NC

12

3

CN901

87G 501 32 SSOCKET

R947NC

R918100 OHM 1/4W

R919100 OHM 1/4W

C9240.1uF

C9003300pF 250V

R907NC

R9261K 1/10W 1%

R906NC

R905NC

+5V

C9310.1uF

123456789

10

CN902

CONN

ON/OFFDIM

MUTE

VOL

L904

1.0uH

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹 A

Custom

1 2715G2852 3 41.POWER

G2852-A-4-X-5-081126

+C918680uF/25V

RT1

COMP2

CS3

GND4

OUT5VCC6NC7HV8

IC901

LD7575A PS

1

2

3D906

FCH10U10

+ C922470PF50V

C904

0.22UF

2

1

3

4-

+

BD901KBP208G

F901FUSE


42

D817LL4148

R82922R 1/8W

R8221K 1/8W

C8210.1uF/25V

R83747K 1/8W

D812

LL4148

R8311K 1/8W

R8028.2K 1/10W 1%

R830NC

+12V

C8221uF/25V

R83210K 1/10W 1%

Q805PDTC144WK

C820220pF50V

R80810K 1/10W 1%R820

10K 1/10W 1%

C8190.0022uF

R81710K 1/10W 1%

D805LL4148

3

1

2

D801BAV99

R8516K8 1/10W

+C802

470PF50V

1IN+1

1IN-2

FEEDBACK3

DTC4

CT5

RT6

GND7

C18

E19E210C211VCC12OUTPUT CTRL13REF142IN-152IN+16

IC801TL494IDR

R82810K 1/10W 1%

3

1

2

D802BAV99

C8230.0022uF

D807LL4148

Q809RK7002

D806LL4148

D811NC

R803680K 1/10W

R83922R 1/8W

R85022R 1/8W

Q811PMBS3904

1

23

Q812PMBS3906

Q807N.C

R804100R 1/8W

R81051K OHM 1% 1/8W

R86310K 1/10W 1%

C80330pF/3KV

R8230R05 1/10W 5%

R8261K 1/8W

D810NC

R80710K 1/10W 1%

DIM

ON/OFF

R8351M 1/10W 5%

12

CN801

CONN

C8420.01uF

C8340.1uF/25V

R8271K 1/10W 1%

F801

0 OHM 1/4W

R824

1K 1/10W 1%

S1

G2

S3

G4

D8

D7

D6

D5

Q802AM9945N-T1-PF

R8181K 1/10W 1%

Q808PDTA144WK

R8621M 1/10W 5%

R82522R 1/8W

C817NC D814

LL4148

C8381500PF/50V

C8070.1uF/25V

C846NC

R865

NC

R864NC

C835NC

Q801PMBS3904

Q806PMBS3904

12

CN802

CONN

R85368K 1/10W

R8141K5 1/10W 1%

1

23

Q804PMBS3906

C8250.1uF/25V

C8391500PF/50V

C80130pF/3KV

R8011K5 1/10W 1%

R854NC

R84168K OHM 1% 1/10W

R861NC

C8452.2uF/16V

R8211K 1/8W

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹 A

Custom

2 2

715G2852-3-4ODM MODEL

2.INVERTER

G2852-A-4-X-5-081126

C8240.1uF

R85615R 1/4W

6

3

7

4

81

T801POWER X'FMR

R85515R 1/4W

Wednesday , Nov ember 26, 2008


43

Key Board

C00

80.

1uF

GNDGND

EN

TE

R

LED_RED#

C00

70.

1uF

DC_POWERON

C002

NC/0.001uF

GND

GND GND GND

PO

WE

R

C01

00.

1uF

C01

10.

1uF

GND

R002 3K 1 / 1 0 W

GND

C00

60.

1uF

GND

ZD

001

NC

LEF

T

C003

NC/0.001uF

CN001

Wire Harness

123456

SW003

SW003

21

3 4

5

ZD

002

NC

R003 1K 1/10W 1%

SW001

SW001

21

3 4

5

LED_RED#

GND

AU

TO

GND

RIG

HT

R006 1K 1/10W 1%

LED001LED

231

GND

SW005

SW005

21

3 4

5

ZD

004

NC

LED_GRN#

ZD006

NC

R007 3K 1 / 1 0 W

LED_GRN#

ZD

003

NC

SW002

SW002

21

3 4

5

R005 3K 1 / 1 0 W

C005

NC/0.001uF

ZD

005

NC

SW006

SW006

21

3 4

5

C001

NC/0.001uF

SW004

SW004

21

3 4

5

R004 1K 1/10W 1%

LBADC2

B

C00

90.

1uF

ME

NU

C004

NC/0.001uF

GND

C


715G3367-C<称爹>02.KEY BOARD

G3367-C-X-X-1-081013

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

LBADC1


44

Troubleshooting

Frequently asked questions (FAQ)

The image is blurred: Read the instructions on the link "Adjusting the Screen Resolution" on the CD, and then select the correct

resolution, refresh rate and make adjustments based on these instructions.

How do you use a VGA extension cable? Remove the extension cable for the test. Is the image now in focus? If not, optimize the image by working

through the instructions in the "Adjusting the refresh rate" section on the link "Adjusting the Screen

Resolution". It is normal for blurring to occur due to conduction losses in extension cables. You can minimize

these losses by using an extension cable with better conduction quality or with a built-in booster.

Does the blurring only occur at resolutions lower than the native (maximum) resolution? Read the instructions on the link "Adjusting the Screen Resolution" on the CD. Select the native resolution.

Pixel errors can be seen: One of several pixels is permanently black, one or more pixels are permanently white, one or more pixels are

permanently red, green, blue or another color.

• Clean the LCD screen.

• Cycle power on-off.

• These pixels are permanently on or off and that is a natural defect occurs in LCD technology.

The image has a faulty coloration: It has a yellow, blue or pink appearance.

Select MENU > PICTURE > Color > Reset Color, and then choose “YES” in the “Caution” message box to

reset the color settings to the factory defaults.

If the image is still not correct and the OSD also has faulty coloration, this means one of the three primary

colors is missing in the signal input. Now check the signal cable connectors. If any pin is bent or broken off,

please contact your dealer to get necessary support.

No image can be seen: Is the prompt on the display illuminated in green?

If the LED is illuminated in green and there is a message “Out of Range” on the screen, this means you are

using a display mode that this monitor does not support, please change the setting to one of the supported

mode. Please read the “Preset display modes” section from the link "Adjusting the Screen Resolution".

Faint shadow from the static image displayed is visible on the screen: • Activate the power management function to let your computer and monitor go into a low power "sleep"

mode when not actively in use.

• Use a screensaver to prevent the occurrence of image retention.


45

Is the prompt on the display illuminated in orange? If the LED is illuminated in orange, the power management mode is active. Press any button on the computer

keyboard or move the mouse. If that does not help, check the signal cable connectors. If any pin is bent or

broken off, please contact your dealer to get necessary support.

Is the prompt on the display not illuminated at all? Check the power supply mains socket, the external power supply and the mains switch.

The image is distorted, flashes or flickers: Read the instructions on the link "Adjusting the Screen Resolution" on the CD, and then select the correct


You are running the monitor at its native resolution, but the image is still distorted. Images from different input sources may appear distorted or stretched on the monitor running at its native

resolution. To have the optimal display performance of each type of input sources, you can use the "Display

Mode" function to set a proper aspect ratio for the input sources.

The image is displaced in one direction: Read the instructions on the link "Adjusting the Screen Resolution" on the CD, and then select the correct


The OSD controls are inaccessible: • To unlock the OSD controls when the OSD is preset to be locked, press and hold the “MENU” key for 15

seconds to enter the “OSD Lock” option and make changes.

• Alternatively, you may use or keys to select “NO” in the “OSD Lock” submenu from the “OSD Settings” menu (under SYSTEM), and all OSD controls will be accessible.

If your problems remain after checking this manual, please contact your place of purchase or e-mail us at:

[email protected]


46

No Power

OK

NG

No power

Check power cable is tightened?

Check Power “On/Off”

is “On”?

Re-plug the power cable

Replace main board and check connections

Check the LED

indicates is OK? Check the AC power

Replace the converter board

OK

NG

OK

NG

NG

Turn on the Power “On/Off” switch

Replace key board and check connections

NG


47

No Video (Power LED Green)

No Video (Power LED Green)

Press the power

button is OK?

Check the LVDS/FFC

cable or panel

The end

NG

OK

OK

NG

Replace the main board

Replace the converter

board

Replace the LVDS/FFC

cable or panel

NG

The end

Replace the key board

NG

OK

Replace the main

board and connection

OK


48

DIM

OK The end

OK The end

OK The end

DIM (image overlap, focus or flicker)

Reset in factory mode

Set to the optimal frequency, select the recommended frequency

Pull out signal cable and check “Self Test Feature

Check” is ok?

Check the signal cable

and the PC

Readjust the phase and pixel

clock in the user mode


Replace the panel

NG

NG

NG

OK

NG

NG

OK The end

OK

NG


49

Color is not optimal

NG

Color is not optimal

Miss color Color shift

Replace the signal cable

Pull out the signal cable and check the screen

color display is normal?

The end

Replace the signal cable or PC

Reset the factory mode

In the user mode, set the” color

settings” until customer satisfy


NG

OK

NG OK

NG


50

PCB LAYOUT

Main Board


51


52


53

Power Board


54


55


56

Key Board


57

Appendix 1 – Screw List / Torque

(T8AARPD8FWBUNN)

Part No. Type Description Quantity Torque

0M1G 130 6120 M3*6 PANEL& MAINFRAME 3 3 ± 0.5kgf.cm

0M1G1030 6120 M3*6 PCB & MAINFRAME 4 6 ± 1kgf.cm

AQ1G1740 12120 Q4*12 HINGE & STAND 2 12 ± 2kgf.cm

0M1G1740 8 47 CR3 M4*8 HINGE & STAND 1 6 ± 1kgf.cm

AM1G1740 12 47 CR3 M4*12 HINGE & STAND&MAINFRAME 2 6± 1kgf.cm

Documents

Product Service Manual – Level 1~2 - Diagramasde.comdiagramasde.com/diagramas/otros2/benq_lcd_g925hda_version_1st.pdfenvironment, contact your nearest BenQ service center for assistance