service manual for benq: lcd g2320hd (d-sub +dvi-d +hdmi … · 2018-01-31 · 23” lcd color...

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Applicable Country & Regions: China

Service Manual for BenQ:

LCD G2320HD

(D-SUB +DVI-D +HDMI

+Black Bezel)

Product Service Manual – Level 1~2

Version: 1st

Date:04-28-2009

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 (April, 2009) © Copyright BenQ Corporation 2009. All Right Reserved.

http://esupport.benq.com,

23” LCD Color Monitor BenQ G2320HD

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Content Index

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

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 Notice ...................................................................................................................................................... 6

2.3 Compliance Statement ....................................................................................................................................... 6

3. General Description ................................................................................................................................................ 7

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

5. Product Overview ................................................................................................................................................... 8

5.1 Monitor Specifications ........................................................................................................................................ 8

5.2 Packing ............................................................................................................................................................. 10

Level 1 Cosmetic / Appearance / Alignment Service ............................................................................................ 12

Visual Inspection & Cleaning .................................................................................................................................. 12

Software/Firmware Upgrade Process .................................................................................................................... 12

Level 2 Circuit Board and Standard Parts Replacement ...................................................................................... 40

Product Exploded View .......................................................................................................................................... 40

Six angles’ view ...................................................................................................................................................... 41

Block Diagram ........................................................................................................................................................ 49

Schematic Diagram ................................................................................................................................................ 51

Troubleshooting Guide ........................................................................................................................................... 60

PCB LAYOUT ......................................................................................................................................................... 68

Appendix 1 – Screw List / Torque ........................................................................................................................... 73


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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 Micromirror Device

DRAM Dynamic RAM

DVI Digital Video Interface

DVI-I Digital Video 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

MOSFET Metal Oxide Semiconductor Field Effect Transistor

N


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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 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.

3. DO NOT perform any action that may cause a hazard to the customer or make the product unsafe.

4. Use proper safety devices to ensure your personal safety.

5. Always use approved tools and test equipment for servicing.

6. Never assume the product’s power is disconnected from the mains power supply. Check that it is

disconnected before opening the product’s cabinet.

7. Modules containing electrical components are sensitive to electrostatic discharge (ESD). Follow ESD safety

procedures while handling these parts.

8. Some products contain more than one battery. Do not disassemble any battery, or expose it to high

temperatures such as throwing into fire, otherwise it may explode.

9. 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.


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3. General Description

This new LCD (Liquid Crystal Display) monitor BenQ G2320HD 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)

● high degree of brightness and good contrast

● high resolution (1920x1080)

● presentation of up to 16.7 million colors (in conjunction with an appropriate graphics card)

● automatic scanning of horizontal frequencies from 24 to 83 kHz and refresh rates (vertical frequencies) from 50 to

76 Hz (absolutely flicker-free)

● 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

● compliance with the recommendations in accordance with TCO’03

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

This specification defines the requirements for the 23” MICROPROCESSOR based Multi-mode supported high

resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGA, 24-pin DVI and

21-pin HDMI connectors, 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 1920x1080 pixels. 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.


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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

5. Product Overview

5.1 Monitor Specifications

G2320HD

Display

Panel model SEC LTM230HT01

Panel Type (TN / VA / IPS) TN

Panel Size 23"W

Display Area 509.76x286.742

Native. Resolution 1920x1080

Pixel Pitch 0.265

Brightness (Typ.) 300 nits

Contrast Ratio (Typ.) / DCR (Min.) 1000:1 (Panel) /40000:1 (DCR)

Viewing Angle (H/V), CR≧10 160/160

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

Response Time 5ms (Tr+Tf)

GtG response Time 2ms (Scalar OD)

NTSC ratio 72%

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) 24kz~83Kz

Ver. Frequency (Hz) 50Hz~76Hz

Video Bandwidth (MHz) 205MHz

Audio Speakers (built-in) NA

Input/Output PC Video Input D-sub + DVI-D + HDMI


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Audio line in NA

Earphone Jack Yes

Power Supply

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

Power-On Mode 45W

Standby Mode <1W

Power Off Mode <0.5W

Mechanical

Design

Chassis Colors Black

Carton Brown Carton with at least C flute

Power LED Green (ON)/ Amber (Standby)

Tilt (Up / Down) 20° ~ -5°

VESA Wall Mount 100 x 100mm

Kensington Lock Yes

Container Loading (40') TBD

Container Loading (20') TBD

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 Premium

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.

Using the EPE bag to pack the monitor without base

Using the EPS to pack the monitor


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Putting the base, user manual and D-SUB cable in the position as the picture shows above

Putting the monitor and accessories into the carton

User manualPower cord

Base

D-SUB cable


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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

1. When do the part, need the tools as follow:

a. An i486 (or above) personal computer or compatible

b. Microsoft operation system Windows 95/98/2000/XP

c. “PORT95NT.exe”and “EasyUSB WriterV4.1” programs

d. ISP BOARD (x1), Printer cable (x1), VGA cable (x1)

2. Install the “PORT95NT.exe”, and restart the computer.

Note: After installation, you must restart the PC to take the setup to effect.

3. Install the “EasyUSB Writer4.1.exe”.

Install the program at the first. The processing as follows:


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14


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4. Connect the ISP board as follow:

5. The process of ISP write is as follows.

a) Double-click ，running the program as follows:

b) Click and the program runs as follows:

Connect to

the PC LPT Connect to the

BenQ model


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c) Click “OK” and the program runs as follows:

d) Click icon and the program runs as follows:


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e) Click icon, search the correct program and click open:

f) Click icon. If it burns successfully, it will show as the follow picture:


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DDC Instruction General

DDC Data Re-programming

In case the main EEPROM with Software DDC which store all factory settings were replaced for a defect, repaired

monitor’ the serial numbers have to be re-programmed.

It is advised to re- soldered the main EEPROM with Software DDC from the old board onto the new board if circuit

board have been replaced, in this case the DDC data does not need to be re-programmed.

Additional information about DDC (Display Data Channel) may be obtained from Video Electronics Standards

Association (VESA). Extended Display Identification Data (EDID) information may be also obtained from VESA.

1. An i486 (or above) personal computer or compatible.

2. Microsoft operation system Windows 95/98/2000/XP.

3. “PORT95NT.exe, TPVDDC5.6” program.

4. EDID BOARD (x1), Printer cable (x1), VGA cable (x1), 12V DC power source

1. Install the “PORT95NT.EXE”, and restart the computer.

The process of installing “PORT95NT” has been specified in, so it will not be specified again. If you have any

problem, please read it.

2 Connect the DDC Board as follow:

Connect to

the PC LPT When you write analog

EDID, Connect this port

12V Input

When you write digital

EDID, Connect this port


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3 The process of ISP write is as follow:

a. Double-click ，appear as follow:

b. Choose “Analog” and then click “Loadfile\lcdddc\B\BENQ\23BNQ\G2320HDB”, it will show the picture as

follow: (Note: When you write digital EDID, choose the “DVI”)


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c. Click “OK”, it will show the picture as follow.

d. Input the date in “Year-Month-Day” box, Key in the same 13 numbers in the Input SN and Verify SN, then click

“Program”, when the analog DDC Write complete, it will show the picture as follow:

Note: The way of digital DDC Write is the same as analog.


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G2320HD EDID

Analog

128 bytes EDID Data (Hex):

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

0: 00 FF FF FF FF FF FF 00 09 D1 26 78 45 54 00 00

10: 0D 0F 01 03 6E 33 1D 78 2E EE 95 A3 54 4C 99 26

20: 0F 50 54 A5 6B 80 61 C0 81 C0 81 40 81 80 95 00

30: A9 40 B3 00 D1 C0 02 3A 80 18 71 38 2D 40 58 2C

40: 45 00 E0 0E 11 00 00 1E 00 00 00 FD 00 32 4C 18

50: 53 15 00 0A 20 20 20 20 20 20 00 00 00 FC 00 42

60: 45 4E 51 20 47 32 33 32 30 48 44 0A 00 00 00 FF

70: 00 32 34 35 36 38 37 39 30 32 33 31 0A 20 00 E0

Decoded EDID data

<---Header--->

Header: 00 FF FF FF FF FF FF 00

<-x-Header-x->

<---Vendor/Product Identification--->

ID Manufacturer Name: BNQ

ID Product Code: 7826

ID Serial Number: 45540000

Week of Manufacture: 13

Year of Manufacture: 2005

<-x-Vendor/Product Identification-x->

<---EDID Structure Version/Revision--->

EDID Version#: 01

EDID Revision#: 03

<-x-EDID Structure Version/Revision-x->

<---Basic Display Parameters/Features--->

Video i/p definition: Analog

Signal Level Standard: 0.700V/0.000V(0.700Vpp)

Setup: Blank-to-Black not expected


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Separate Sync Support: Yes

Composite Sync Support: Yes

Sync. on green video supported:Yes

Serration of the Vsync.Pulse is not required.

Max. H. Image Size : 51cm.

Max. V. Image Size : 29cm.

Display Gamma: 2.2

DPMS Features, Stand-by: No.

DPMS Features, Suspend: No.

DPMS Features, Active off: Yes.

Display Type: R.G.B color display.

Standard Default Color Space: Primary color space.

Preferred Timing Mode: In First Detailed Timing.

GTF supported: No.


<---Color Characteristics--->

Red x: 0.6396484375

Red y: 0.3300781250

Green x: 0.3017578125

Green y: 0.5996093750

Blue x: 0.1503906250

Blue y: 0.0595703125

White x: 0.3125000000

White y: 0.3291015625

<-x-Color Characteristics-x->

<---Established Timings--->

Established Timings 1: A5

-720x400 @70Hz VGA,IBM


-640x480 @75Hz VESA

-800x600 @60Hz VESA

Established Timings 2: 6B

-800x600 @75Hz VESA

-832x624 @75Hz Apple,Mac II

-1024x768 @60Hz VESA

-1024x768 @75Hz VESA

-1280x1024 @75Hz VESA

Established Timings 3: 80


<-x-Established Timings-x->


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<---Standard Timing Identification--->

-1024x576 @60 Hz

-1280x720 @60 Hz

-1280x960 @60 Hz

-1280x1024 @60 Hz

-1440x900 @60 Hz

-1600x1200 @60 Hz

-1680x1050 @60 Hz

-1920x1080 @60 Hz

<-x-Standard Timing Identification-x->

<---Detailed Timing Descriptions--->

Detailed Timing: 1920x1080 @ 60Hz.

<-x-Detailed Timing Descriptions-x->


Detailed Timing: FD (Monitor limits)

Min. V. rate: 50Hz

Max. V. rate: 76Hz

Min. H. rate: 24KHz

Max. H. rate: 83KHz

Max. Pixel Clock: 210MHz

Detailed Timing: FC (Monitor Name) 'BENQ G2320HD'

Detailed Timing: FF (Monitor SN) '24568790231'


Extension Flag: 00

Checksum: E0


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Digital 128 bytes EDID Data (Hex):

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

0: 00 FF FF FF FF FF FF 00 09 D1 27 78 45 54 00 00

10: 12 10 01 03 80 33 1D 78 2E EE 95 A3 54 4C 99 26

20: 0F 50 54 A5 6B 80 61 C0 81 C0 81 40 81 80 95 00

30: A9 40 B3 00 D1 C0 02 3A 80 18 71 38 2D 40 58 2C

40: 45 00 FE 1F 11 00 00 1E 00 00 00 FD 00 32 4C 18

50: 53 15 00 0A 20 20 20 20 20 20 00 00 00 FC 00 42

60: 45 4E 51 20 47 32 33 32 30 48 44 0A 00 00 00 FF

70: 00 31 35 36 34 38 37 39 30 31 32 33 0A 20 00 99

Decoded EDID data

<---Header--->

Header: 00 FF FF FF FF FF FF 00

<-x-Header-x->

<---Vendor/Product Identification--->






<-x-Vendor/Product Identification-x->

<---EDID Structure Version/Revision--->

EDID Version#: 01

EDID Revision#: 03

<-x-EDID Structure Version/Revision-x->


Video i/p definition: Digital

Max. H. Image Size : 51cm.

Max. V. Image Size : 29cm.

Display Gamma: 2.2


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DPMS Features, Stand-by: No.

DPMS Features, Suspend: No.

DPMS Features, Active off: Yes.

Display Type: R.G.B color display.

Standard Default Color Space: Primary color space.

Preferred Timing Mode: In First Detailed Timing.

GTF supported: No.


<---Color Characteristics--->

Red x: 0.6396484375

Red y: 0.3300781250

Green x: 0.3017578125

Green y: 0.5996093750

Blue x: 0.1503906250

Blue y: 0.0595703125

White x: 0.3125000000

White y: 0.3291015625

<-x-Color Characteristics-x->

<---Established Timings--->

Established Timings 1: A5



-640x480 @75Hz VESA

-800x600 @60Hz VESA

Established Timings 2: 6B

-800x600 @75Hz VESA


-1024x768 @60Hz VESA

-1024x768 @75Hz VESA

-1280x1024 @75Hz VESA

Established Timings 3: 80


<-x-Established Timings-x->

<---Standard Timing Identification--->

-1024x576 @60 Hz

-1280x720 @60 Hz

-1280x960 @60 Hz

-1280x1024 @60 Hz

-1440x900 @60 Hz


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-1600x1200 @60 Hz

-1680x1050 @60 Hz

-1920x1080 @60 Hz

<-x-Standard Timing Identification-x->


Detailed Timing: 1920x1080 @ 60Hz.



Detailed Timing: FD (Monitor limits)

Min. V. rate: 50Hz

Max. V. rate: 76Hz

Min. H. rate: 24KHz

Max. H. rate: 83KHz

Max. Pixel Clock: 210MHz

Detailed Timing: FC (Monitor Name) 'BENQ G2320HD'

Detailed Timing: FF (Monitor SN) '15648790123'


Extension Flag: 00

Checksum: 99


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HDMI 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

--------------------Block 0--------------------

00| 00 FF FF FF FF FF FF 00 09 D1 27 78 45 54 00 00

10| 17 0E 01 03 80 33 1D 78 2E EE 95 A3 54 4C 99 26

20| 0F 50 54 A5 6B 80 61 C0 81 C0 81 40 81 80 95 00

30| A9 40 B3 00 D1 C0 02 3A 80 18 71 38 2D 40 58 2C

40| 45 00 FE 1F 11 00 00 1E 00 00 00 FD 00 32 4C 18

50| 53 15 00 0A 20 20 20 20 20 20 00 00 00 FC 00 42

60| 45 4E 51 20 47 32 33 32 30 48 44 0A 00 00 00 FF

70| 00 33 36 34 35 37 39 38 30 33 32 31 0A 20 01 93

--------------------Block 1--------------------

00| 02 03 21 71 4C 10 05 04 13 03 12 07 16 01 14 15

10| 1F 23 09 07 07 83 01 00 00 67 03 0C 00 10 00 38

20| 2D 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 E0 0E 11

30| 00 00 18 01 1D 00 72 51 D0 1E 20 6E 28 55 00 E0

40| 0E 11 00 00 1E 01 1D 00 BC 52 D0 1E 20 B8 28 55

50| 40 E0 0E 11 00 00 1E 8C 0A D0 90 20 40 31 20 0C

60| 40 55 00 E0 0E 11 00 00 18 8C 0A A0 20 51 20 18

70| 10 18 7E 23 00 E0 0E 11 00 00 98 00 00 00 00 44

-------------------------------------------------------

Block 0:

EDID Structure Version/Revision: 01 03

<-Vendor/Product Identification:->






<-Basic Display Parameters/Features:->

Video i/p definition: Digital

Max. H. Image Size : 51cm

Max. V. Image Size : 29cm

Display Gamma : 2.2

<-Color Characteristics:->

Rx: 0.640 Gx: 0.299 Bx: 0.150 Wx: 0.312

Ry: 0.330 Gy: 0.600 By: 0.060 Wy: 0.329


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<-Established Timings:->

Established Timings 1:A5

720 x 400 @ 70Hz VGA,IBM

640 x 480 @ 60Hz VGA,IBM

640 x 480 @ 75Hz VESA

800 x 600 @ 60Hz VESA

Established Timings 2:6B

800 x 600 @ 75Hz VESA

832 x 624 @ 75Hz Apple,Mac II

1024 x 768 @ 60Hz VESA

1024 x 768 @ 75Hz VESA

1280 x1024 @ 75Hz VESA

Established Timings 3:80

1152 x 870 @75Hz Apple,Mac II

<-Standard Timing Identification:->

1024 x 576 @ 60Hz

1280 x 720 @ 60Hz

1280 x 960 @ 60Hz

1280 x 1024 @ 60Hz

1440 x 900 @ 60Hz

1600 x 1200 @ 60Hz

1680 x 1050 @ 60Hz

1920 x 1080 @ 60Hz

<-Detailed Timing Descriptions:->

Detailed Timing : 1920x1080 @ 60Hz

FD (Monitor Limits):

Min. V. rate: 50 Hz

Max. V. rate: 76 Hz

Min. H. rate: 24 KHz

Max. H. rate: 83 KHz

Max. P Clock: 210 MHz

FC (Monitor Name) : BENQ G2320HD

FF (Monitor SN) : 36457980321


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Extension Flag : 01

Block0 Checksum : 93

-------------------------------------------------------

Block 1:

Extended Block Type: CEA 861B

Detailed Timing Blocks start at Byte: 21

DTV Underscan NO

DTV Basic Audio YES

YCbCr (4:4:4) YES

YCbCr (4:2:2) YES

<-Video Short Block Description:->

1920 x 1080 P 59.94/60Hz 16:9

1920 x 1080 I 59.94/60Hz 16:9

1280 x 720 P 59.94/60Hz 16:9

1280 x 720 P 50Hz 16:9

720 x 480 P 59.94/60Hz 16:9

720 x 576 P 50Hz 16:9

720(1440) x 480 I 59.94/60Hz 16:9

720(1440) x 576 I 50Hz 16:9

640 x 480 P 59.94/60Hz 4:3

1920 x 1080 I 50Hz 16:9

720(1440) x 576 I 50Hz 4:3

1920 x 1080 P 50Hz 16:9

<-Audio Short Block Description:->

Numbers of Audio Channels: 2

Audio Format Description: Linear PCM

Audio Supported: 48KHz 44KHz 32KHz

Audio Bit Rate: 24bit 20bit 16bit

<-Speaker Allocation:->

Speaker Allocation: FL/FR

<-Detailed Timing Descriptions: ->

Detailed Timing Descriptions: 720x480 @ 60Hz

H Image Size: 480 mm V Image Size: 270 mm

Pixel Clock: 27 Hz Refreshed Mode: Non-Interlaced


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Pixel Clock: 27 Hz Refreshed Mode: Interlaced

Block1 Checksum : 44


31

Adjustment / Alignment Procedure

Adjusting the Picture

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 four main OSD menus:

1. Display

2. Picture

3. Picture Advanced

4. System

Use the or 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.

Display menu


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

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

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

4. Press the or keys to make adjustments or selections.

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

Item Function Operation RangeAuto

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 the 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


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



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


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Item Function Operation Range

Brightness

Adjusts the balance between light

and dark shades.

The function is not available for

use when Dynamic Contrast is

on

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.

The function is not available for

use when Dynamic Contrast is

on.

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 the or keys to select

this option.

0 to 100

Bluish

Applies a cool tint to the image

and is factory pre-set to the PC

industry standard white color.

0 to 63

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.

The default start setting is 50.

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 the or keys and the

ENTER key to select Red, Green,

or Blue. Then use Press the

or keys to make the color adjustments.

Red (0 to 100)

Green (0 to

100)

Blue (0 to 100)


34

Reset Color

Resets the User Mode custom

color settings to the factory

defaults.

Press the or keys to change 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 will increase the level

of contrast to provide sharper and

more detailed image quality.

Activating

Dynamic Contrast will

disable Brightness and

Contrast controls.

Press the ENTER key to select this

option. Press the or keys to change the settings.

0 to 5

Picture Advanced menu


2. Press the 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.

Press the or keys to change the

settings.

• Standard

• Movie

• Dynamics

• Photo

• sRGB


35

• sRGB - for better color matching

representation with the peripheral devices,

such as printers, DSCs, etc.

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.


settings.

• 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.

Aspect is not available when the video

content is in a 16:9 aspect ratio.


settings.

• Full

• Aspect

System menu


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


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


36


Input

Selects the D-sub (analog) input.

Use this to change the input to

that appropriate to your video

cable connection type.

Analog-only models do not

have the Input function.


• D-sub

• DVI

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

Language

Sets the OSD menu Language.


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/

• Japanese

• Czech/

• Traditional

• Chinese

• Hungarian/

• Simplified

Chinese

• Serbo-Croatian

• Romanian

• Dutch

• Russian

• Swedish

• Portuguese

H. Position Adjusts the horizontal position of

the OSD menu.


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 Sec.

• 10 Sec.

• 15 Sec.

• 20 Sec.

• 25 Sec.

• 30 Sec.


37

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.


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

the 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.


• ON

• OFF

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.


• 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.


38

Display timing table

Resolution Horizontal Frequency

(KHz)

Vertical Frequency

(Hz)

640x480 31.47 59.94

640x480 37.50 75.00

720x400 31.47 70.08

800x600 37.88 60.32

800x600 46.88 75.00

832x624 49.72 74.55

1024x768 48.36 60.00

1024x768 60.02 75.03

1152x864 67.50 75.00

1152x870 68.68 75.06

1152x900 61.80 65.96

1280x768 47.396 60.00

1280x800 49.702 59.81

1280x720 44.77 59.86

1280x960 60.00 60.00

1280x1024 63.98 60.02

1280x1024 79.98 75.02

1360x768 47.70 60.01

1366x768 47.76 59.85

1440x900 70.60 75.00

1600x900 55.54 60.00

1680x1050 65.29 60.00

1680x1050 82.30 75.00

1920x 1080 67.50 60.00


39

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.(take G2320HDB 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 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”. And need to have a warning message to double

confirm the reset function. The timer should record up to 99999 hours.

7. Add one select item for DVI port, Mode 1, Mode 2 at service menu

Mode 1: To enable the hot plug pin detection. (HDMI port default)

Mode 2: To disable the hot plug pin detection. (DVI port default)

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.


40

Level 2 Circuit Board and Standard Parts Replacement

Product Exploded View

NO PART NO QTY UNIT DESCRIPTION REMARK

1 A34G1310ADPB1B0130 1 PCS BEZEL 23"

2 Q33G0288 2 1C0100 1 PCS LENS

3 KEPC8QJ3 1 PCS KEY BOARD

4 Q33G0287ADP 1L0100 1 PCS KEY PAD

5 750GLS230HT132N000 1 PCS PANEL

6 0G1G1030 8120 4 PCS SCREW PB & MF

MB & MF

7 PWPC9E41MQWX 1 PCS POWER BOARD

8 756GQ9CB BQ001 1 PCS MAIN BOARD(CBPC9NQBQQ1)

9 0M1G1030 6120 2 PCS SCREW M3X6 HDMI & MF

MB & MF

10 A15G0773101 1 PCS MAINFRAME SHIELDING


41

11 P15G8299 3 4 PCS BKT-VESA

12 0Q1G1030 6120 1 PCS SCREW

REAR COVER &

HEADPHONE

JACK BOARD

13 HJPF9AA1 1 PCS HEADPHONE JACK BOARD

14 A34G1311ADP 1B0130 1 PCS REAR COVER 23"

15 A33G0468ADPB1L0100 1 PCS PLATE_LOGO_B

16 AQ1G1740 12120 2 PCS SCREW STAND & HINGE

17 A37G0117011 1 PCS HINGE_BENQ_G2320

18 A34G1312ADP 1B0100 1 PCS STAND FRONT

19 AM1G1740 12 47 CR3 4 PCS SCREW

STAND & HINGE

HINGE & REAR

COVER

20 A34G1313ADP 1B0130 1 PCS STAND REAR

21 A33G0251ADP 2L0100 1 PCS CABLE CLIP

22 A34G1314ADP 1B0133 1 PCS BASE

23 Q12G6082 1 4 PCS FOOT PAD

Six angles’ view


42

Product Disassembly

1). Remove the stand-base ASS’Y

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 two screws as below to remove the stand-base ASS’Y.

Fig1

2). Remove the Bezel

Remove the bezel as follow:

A. Use Disassembly Tool to open cosmetic cover and avoid scratch

B. Use disassembly tool to open 2 latches of the bezel.


43

C. Put the disassembly tool into the nick。


44

D. Gash slightly the latch with the disassembly tool.


45

E. When the all latches open, remove the bezel.

3). Disconnect the key board connections


46

4). Remove the rear cover

5).Remove the Panel

Disconnect the Lamp Connections and LVDS Cable connection.


47

6).Remove the Main Board and Power Board

Remove the screws and disconnect the all connections, at last you can get the Main Board and Power Board

as follow.


48

MAIN BOARD

POWER BOARD


49

Block Diagram

Main Board

D-Sub Connector

(CN301)

H sync

V sync

RGB

Panel Interface

(CN601)

Key Control Interface

(CN202)

Crystal 24MHZ

(X401)

Scalar RTD2545LH-GR

(U501) MCU RTD2122L-LF

(U401)

DVI Connector

(CN302)

RXN/P

RXCN/P

SCL/SDA


50

Power Board

ON/OFF

PID

EMI filter

Start Resistor (R904, R905)

PWM Control (IC901)

Transformer

AC input 16V

Feedback Circuit

Transformer (PT801)

MOSFET (Q805, Q806)

Lamp

5V

Bridge Rectifier and Filter

Feedback Circuit

Rectifier diodes

Output Circuit

PWM Control (IC801)

Power Switch

（Q901）

Photocoupler

(IC903)

16V

DIM


51

Schematic Diagram Main Board

R104 75R 1/16W 5%

HDMI1_D1- 4

VSI

_DS

UB

R102 75R 1/16W 5%

DDCA_SDA 4

R109 100R 1/16W 5%GNDR 4

SC

L_D

SU

B

R103 75R 1/16W 5%

C107 0.047uF

+5V_VCC7

DET_HDMI 4

DDC CLK

R12

34K

7 1/

16W

5%

DVI_PIN12

HDMI1_D1+DVI_PIN3

DVI_PIN6

D103

BAV99

3

12

C103 0.047uF

R11

44K

7 1/

16W

5%

C102 0.047uF

HDMI1_+5V

HDMI1_CK+

DAT2+

D101

BAV99

3

12

R144 100R 1/16W 5%

C116

0.22uF

GIN 4

ESD_5V

HDMI_+5V

D_SUBB+

DET_VGA 4

U103

AZC199-04S

123 4

56

I/O1GNDI/O2 I/O3

VDDI/O4

ESD_5V

DVI_PIN10

HDMI2_D2+ 4

HSI

_DS

UB

R16

110

0R 1

/16W

5%

C121

0.1uF 16V

HDMI1_D1+ 4

PC5V

R12

510

K 1

/16W

5%

DVI5V 7

HDMI1_CEC 4

DDCA_SCL 4

D_SUBG-

HDMI1_SCL

C104 0.047uFFB106 30 OHM1 2

DVI_HPDPin

Q103

2N3904S-RTK/PS

ESD_5V

HDMI1_HOTPLUG

R140 NC/100R 1/16W 5%

R162 1K 1/16W 5%

HDMI1_+5V

DCLK+

R15

620

0R 1

/10W

5%

R15

720

0R 1

/10W

5%

HDMI2_SCL4

PC5V 7

HDMI1_+5V7

HDMI1_SDA

C120

0.1uF 16V

C1140.1uF 16V

HDMI1_D2-

DVI_PIN7

R154 10R 1/16W 5%

DAT0-

C1190.22uF

R149 10R 1/16W 5%

C108

0.1uF 16V

C

C

3 7Thursday , April 16, 2009

715G3502-C<称爹>

2.0.INPUT

G3502-C-X-X-3-090323 HD9SNQN8FWBQDNOEM 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

D_SUBRIN+

HDMI1_D1- R13

510

K 1

/16W

5%

CEC

ZD101

RLZ5.6B

R13

84K

7 1/

16W

5%

R120 100R 1/16W 5%

R112 22R 1/16W 5%

HDMI2_D0+ 4

DET_DVI 4

Q102_B

D10

3_D

VSYNC 4

R10

675

OH

M 1

/8W

R164 1K 1/16W 5%

R141

1K 1/16W 5%

DDC_WP 4

HDMI2_D0- 4

+5V_VCC

HDMI1_D0+

HDMI1_D2-

R142 2K OHM 1/16W

FB102 30 OHM1 2

D105

BAT54C

DVI_HPD 4

DVI5V 7

DDC DATA

U110

AZC199-04S

1 2 3456

I/O1

GN

DI/O

2I/O

3V

DD

I/O4

U107RClam p0524P.TCT

12

3

45 6

7

8

910IN1

IN2G

NDIN3

IN4 OUT4OUT3

GN

D

OUT2OUT1

CN101

DB15

162738495

11

12

13

14

1510

1716

D-SUBSOG

R143 100R 1/16W 5%

C115

0.1uF 16V

+5V_VCC 7

VGA_CON

BLUE+

U111

AT24C02BN-SH-T

12345

678

A0A1A2

VSSSDASCLWPVCC

U105

AZC199-04S

123 4

56

I/O1GNDI/O2 I/O3

VDDI/O4

VSI

CN102

JACK

12

3

45

67

8

910

11

1213

14

15

16

1718

19

2021

22

2324

26 25

DAT2-DAT2+

2/4shield

DAT4-DAT4+

DDC SCLDDC SDA

VSYNC

DAT1-DAT1+

1/3shield

DAT3-DAT3+

+5V

SYNC GND

HPD

DAT0-DAT0+

0/5shield

DAT5-DAT5+

clk shield

clk+clk-

GN

DG

ND

R150 10R 1/16W 5%

HDMI1_D0+ 4

D10

2_D

R456 10K 1/16W 5%

+5V_VCC

SCL_VGA

HDMI_HOTPLUG

D_SUBG+

C117

0.1uF 16V

GREEN+

HDMI1_D1+

HDMI2_CK+ 4

HDMI1_D0-

ZD102

RLZ5.6B

HDMI1_CK+

D_SUBR+

DVI_PIN4

SDA_DVI

C111

22P 50V

R14

610

K 1

/16W

5%

R1321K 1/16W 5%

L104 90 ohm

1

2

4

3

GNDG 4

C101

0.1uF 16V

CEC

DVI_CHKT

L102 90 ohm

1

2

4

3

PC5V

DAT0+

DVI5V

Q104_B

C118

0.1uF 16V

FB104 30 OHM1 2

D_SUBB-

HDMI1_D2+

Q102

2N3904S-RTK/PS

R148 10R 1/16W 5%

R15

820

0 O

HM

1/1

6W

D_SUBBIN+

HDMI1_D2+

R113

2K2 1/16W 5%

C105 0.047uF

HDMI1_D0- 4

HDMI1_CK-

RED-

R12

44K

7 1/

16W

5%

HDMI1_+5V 7

DAT1-

DDC_WP

HDMI1_D0+

U104

AT24C02BN-SH-T

12345

678 A0

A1A2

VSSSDASCLWPVCC

C109 0.1uF 16V

U101

AZC199-04S

123 4

56I/O1

GNDI/O2 I/O3

VDDI/O4

+5V_VCC

DVI_HPTCTL

DCLK-

R119 100R 1/16W 5%

R13

910

K 1/

16W

5%

DDC_WP

HDMI_HPD 4

C106 0.047uF

ESD_5V

DDC_WPD

101_

D

R10

575

OH

M 1

/8W

R15

920

0 O

HM

1/1

6W

HDMI1_SDA 4

HDMI2_SDA4

HDMI2_D1+ 4

R163

10K 1/16W 5%

L103 90 ohm

1

2

4

3

R152 10R 1/16W 5%

HDMI2_D1- 4

HDMI1_CK- 4

HDMI1_SCL 4

HSI

DVI_PIN1

BLUE-

R108 100R 1/16W 5%

R153 10R 1/16W 5%

CN103

HDMI

20

21

12345678910111213141516171819

23

22

SHELL1

SHELL2

D2+D2 Shield

D2-D1+

D1 ShieldD1-D0+

D0 ShieldD0-

CK+CK Shield

CK-CE Remote

NCDDC CLK

DDC DATAGND+5V

HP DET

SHELL4

SHELL3

+5V_VCC

ESD_5V

R16

010

0R 1

/16W

5%

FB101 120 OHM

+5V_VCC

PC5V

SD

A_D

SUB

GREEN-

HDMI1_D2- 4

R13

74K

7 1/

16W

5%

DVI_PIN9

D102

BAV99

3

12

C122

0.22uF

R10

775

OH

M 1

/8W

BIN 4

DAT2-

HDMI2_CK- 4

RED+

D10

5_C

R151 10R 1/16W 5%

DVI5V

D_SUBR-

U108RClam p0524P.TCT

12

3

45 6

7

8

910

IN1IN2

GN

DIN3IN4 OUT4

OUT3

GN

D

OUT2OUT1

HDMI1_CK+ 4

ESD_5V

HSYN_DSUB

HDMI1_+5V

RIN 4

GNDB 4

HDMI1_CK-

HDMI_HOTPLUG

SDA_VGA

ZD106

NC/RLZ5.6B

+5V_VCC

C112

22P 50V

HSYNC 4

HDMI1_D2+ 4

D_SUBGIN+

DDC DATA

R110 100R 1/16W 5%

DAT1+

SCL_DVI

U106

AZC199-04S

123 4

56

I/O1GNDI/O2 I/O3

VDDI/O4

+5V_VCC

Q104

2N3904S-RTK/PS

DVI5V

R122 22K 1/16W 5%

HDMI2_D2- 4

D104

LL4148

R147 10R 1/16W 5%

R11

54K

7 1/

16W

5%R111 22R 1/16W 5%

C110 0.1uF 16V

HDMI1_D1-

R101

2K2 1/16W 5%

R121 10K 1/16W 5%

Q1012N3906S-RTK/PS

R15

520

0R 1

/10W

5%

ESD_5V

HDMI1_D0-

U109

AT24C02BN-SH-T

12345

678 A0

A1A2

VSSSDASCLWPVCC

R457 10K 1/16W 5%

L101 90 ohm

1

2

4

3

DDC CLK

HDMI_HPDCTL


52

D401

NC/BAT54C

DVI_VCC

R414

10K 1/16W 5%

U402

PM25LV020-100SCE

12

34 5

678

CE#SDO

WP#VSS SDI

SCKHOLD#VDD

FB404 120 OHM1 2

+C402

100uF16V

+5V 6,7

Q402_C

X401_N

R418

10K 1/16W 5%

HDMI1_D1-3

U401_PIN109

LED_AR420 1M 1/16W 5%

+5V

PA5

R426

1K 1/16W 5%

R462

NC

/27K 1/16W 5%

CN411

NC/CONN

123

C405

0.1uF 16V

R438 0R05 1/16W

+C416

47UF16V

DDC_WP 3

AOUT_R 6

DVDD

EE_WP

DDCA_SCL3

VCC3.3

HDMI2_SDA3

PB2

CN401

NC/CONN

1234

LED_A

PB9

U401_PIN102

R442 NC/4K7 1/16W 5%

U401

NT68672UMFG

1

23

45

6

78

910

11

1213

1415

16

1718

1920

21

222324252627

2829

303132333435

3637

3839

40

4142

4344

4546

47484950

51

5253 5455

5657585960616263

64

102

101

100

99

98

97969594939291908988

87

86858483828180797877

76

7574

73

7271

7069

6867

66 65128

127

126

125124

123122

121120

119

118

117

116

115

114

113112111110

109

108

107

106

105

104

103

REXT/VCLK1

RX1C-/V10RX1C+/V11

RX2C-/V20RX2C+/V21

AGN

D

RX10-/V12RX10+/V13

RX20-/V22RX20+/V23

AGN

D

RX11-/V14RX11+/V15

RX21-/V24RX21+/V25

DV

I_VC

C

RX12-/V16RX12+/V17

RX22-/V26RX22+/V27

PGN

D/A

GN

D

BIN1+BIN1-GIN1+GIN1-RIN1+RIN1-

ADC

_GN

DA

AD

C_V

DD

BIN0+BIN0-GIN0+GIN0-RIN0+RIN0-

HSYNCI1VSYNCI1

HSYNCI0VSYNCI0/TOUTP

DG

ND

PB4*/DDC_SCL0*PB5*/DDC_SDA0*

PB6*/DDC_SCL1*PB7*/DDC_SDA1*

P30/RXDP31/TXD

PB0/ADC0/INTE0PB1/ADC1/INTE1PB2/ADC2/INTE2PB3/ADC3/INTE3

PWMA*

CVD

D

DV

DD

/MV

DD

AU

DIO

_VD

DAU

DIO

_GN

D

I2S3/AIN1_RI2S2/AIN1_LI2S1/AIN0_RI2S0/AIN0_L

WDSCK/AOUT_R

MCLK/AOUT_LSPDIF

A_G

ND

PC4/PWM8

PC2*/PWM6*

PC0*/PWM4*

CVD

D

DG

ND

T0MT0PT1MT1PT2MT2P

TCLK1MTCLK1P

T3MT3P

DVD

D

T4MT4PT5MT5PT6MT6P

TCLK2MTCLK2P

T7MT7P

DG

ND

PD6PD5

PD4

PD3/SPI_CKPD2/SPI_SI

PD1/SPI_SOPD0/SPI_CE

P35/T1P34/T0

DVD

D

A_VC

C

DV

I_VC

C

DG

ND

VLKK2

DDC_SDA3*/PA7*DDC_SCL3*/PA6*

DDC_SDA2*/PA5*DDC_SCL2*/PA4*

PE1*PE0*

CVD

D

DVD

DOSCO

OSCI

DG

ND

RSTB

ADC7/PWM3/PA3ADC6/PWM2/PA2ADC5/PWM1/PA1ADC4/PWM0/PA0

PWM11/PC7

PWM9/PC5

PWM7*/PC3*

PWM5*/PC1*

PWMB*

DV

DD

/MV

DD

PWM10/PC6

PB[0..9]

C426

0.1uF 16V

GNDB3

U401_PIN103

D405

RLZ5.6B

R449 NC/100R 1/16W 5%

U401_PIN112

U403_SCL

C419

0.1uF 16V

FB401 120 OHM1 2

PB[0..9] 5

HDMI1_D0-3

5V_DET

PA7

Q40

2_E

Q407_C

CN408

CONN

123456

CN407_PIN2

R448 NC/100R 1/16W 5%

U401_PIN101

Q407

2N3904S-RTK/PS

C412

0.1uF 16V

D402

LL4148

R439 NC/0R05 1/16W

R451 NC/2K2 1/16W 5%

VSYNC3

POWER

R410 1K 1/16W 5%

DDCA_SDA3

DVI_VCC

+5V

DVDD

U401_PIN106

VCC3.37

Q404_E

BUZZER

C411

0.1uF 16V

R463 NC/10K 1/16W 5%

HDMI1_CK-3

key2

C423 47pF

Q40

4_C

R437

NC

C404

0.1uF 16V

R417

10K 1/16W 5%

C424 47pF

VCC3.3

PA6

Q403_E

R429

10K 1/16W 5%

R428

10K 1/16W 5%

RSTB

R44

6N

C/1

0K 1

/16W

5%

+C417

10UF16V

R452 0R05 1/16W

+5V

R450 NC/2K2 1/16W 5%

AUDIO_VDD

PB0

PA2

HDMI1_CEC 3

RX

+C425

100uF16V

HDMI_HPD 3

RX

PA[0..9] 5

RIN3

C429

0.1uF 16V

R44

4N

C/4

K7

1/16

W 5

%

DDC_WP

C410

0.1uF 16V

VCC3.3

R455 NC/22K 1/16W 5%

Q406_B

KEY2

LED_G

HDMI1_CK+3

U401_PIN113

Q404

2N3906S-RTK/PS

PA4

PA0

VOL_CTRL

FB403 120 OHM1 2

LEDA

TOUCH_POWER

C403

0.1uF 16V

PB7

Q402

2N3906S-RTK/PS

U403

NC/M24C02-WMN6TP

12345

678

A0A1A2

VSSSDASCLWPVCC

VCC3.3

HDMI1_SDA3

OSCO

KEY1

R460

1K 1/16W 5%

U401_SPICE

AUDIO_MUTE

R419 100R 1/16W 5%

R430 0R05 1/16W

HDMI1_SCL3

DET_DVI 3

ADC_VDD A_VCC

LEDG

SDA1SCL1

C717

NC

/0.1uF 50V

C414

0.1uF 16V

VCC1.27

DVI_HPD 3

power

Volume

U401_PIN60

SCL1

+C431

NC/10UF16V

R458

3.9K OHM 1/16W

R425

1K 1/16W 5%

C430

0.1uF 16V

+C415

10UF16V

HDMI2_D0-3

HDMI2_D2+3

HDMI1_D0+3

BIN3

R427 100R 1/16W 5%

R407

NC

/27K 1/16W 5%

C435

10uF/10V

AINR 6

+5V

U402_WP

C427

0.1uF 16V

PB6

R412 100R 1/16W 5%

R461

NC

/27K 1/16W

5%

HDMI2_CK+3

HDMI1_D1+3

R432 1K 1/16W 5%

D704

NC

/RLZ

5.6B

A_VCC

PB1

U403_SDA

R423

3.9K OHM 1/16W

D403

RLZ5.6B

DVDD

U401_PIN111

PA[0..9]

EE_WP

CN409

NC/CONN

1234567

C422

0.1uF 16V

HDMI2_D0+3

VCC3.3

VCC1.2

R406 22K 1/16W 5%

VOL 6

ADC_VDD

R434 1K 1/16W 5%

HDMI1_D2+3

HDMI2_SCL3

+C421

10UF16V

CN406

NC/CONN

123456

U401_SPISI

CN407_PIN1

R408 NC/0R05 1/16W

on_PANEL 7

5V_DET

D40

1_C

+5V

C401

0.22uF

DET_HDMI 3

PB5

PB8

TX

KEY1

Q40

3_C

R441 NC/0R05 1/16W

VCC3.3

U402_WP

on_BACKLIGHT 7

C420

0.1uF 16V

CN402

NC/CONN

1234567

R443 100R 1/16W 5%

GNDG3

U401_SPISO

HDMI2_D2-3

GIN3

AU

DIO

_Dea

ly

C428

0.1uF 16V

R405 22K 1/16W 5%

R424

3.9K OHM 1/16W

PA9

R415

10K 1/16W 5%

PB4

FB402 120 OHM1 2

C409

0.1uF 16V

VCC3.3

Volume

FB405 120 OHM1 2

CN407

NC/CONN

12345678

HDMI2_CK-3

VCC1.2

+5V

HDMI2_D1+3

OSCI

MUTE 6

VCC3.3 7

Aug-08-24 change value 0 to 4.7K

D40

2_A

R44

5N

C/4

K7

1/16

W 5

%

LED_G

PA3

DET_VGA 3

CN407_PIN4

Q408

NC/2N3904S-RTK/PS

+C413

10UF16V

R413 100R 1/16W 5%

C418

0.1uF 16V

U401_PIN1

AUDIO_VDD

LEDG

KEY2

Q403

2N3906S-RTK/PS

R401 470 OHM +-1% 1/16W

+ C408

100uF16V

POWER

HSYNC3

U401_PIN107

LED_G

HDMI1_D2-3

adj_BACKLIGHT 7

DVDD

BUZZER

D404

RLZ5.6B

AINL 6

VCC3.3

TX

PA8

R411 100R 1/16W 5%

R453 0R05 1/16W

AOUT_L 6VCC3.3

PB3

DVI_VCC

LED_A

CN407_PIN3

D406

LL4148

VCC3.3

DVDD

LEDA

Q408_B

Q406

2N3904S-RTK/PS

R440 0R05 1/16W

PA1

FB408

NC/120 OHM

12

key1

R421 0R05 1/16W

HDMI2_D1-3

C

Custom

4 7Friday , March 20, 2009

715G3502-C<称爹>

3.0.SCALER


Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

SDA1

C407

0.1uF 16V

R459

1K 1/16W 5%

C406

0.1uF 16V

GNDR3

+5V

+5V

Q404_B

X401

12MHz

U401_SPICK

AUD

IO_M

UT

E

C434

NC/0.22uF


53

C

A

5 7Friday , April 17, 2009

715G3502-C <称爹>4.0.PANEL INTERFACE


Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

RXE0+

PB3 RXE1+

PA1

RXOC+RXE3-

PB2

RXEC+

PA6

PA[0..9]

PB6

PA7

RXE0-

PA5

PA9

RXE3+

PB9

RXO1-

RXO1+RXO0+

PB1

RXOC-

PB5

RXE1-

PA7

RXE0-PB6

RXO2-

RXE2+

PA4

PA2

R435

220 OHM 1/4W

RXO3-

CN403

CONN

24681012141618202224262830

13579

11131517192123252729

RXO2+

PB8

PB4

PB0

PA1

RXE2-

RXO2-

PA6

RXO0-

RXE1+

RXO0+

RXE3+

RXOC+

PA5

PA2

PB9

RXEC-RXE3-

C432

0.1uF 16V

PB4

RXEC-

+C433

100uF16V

PB5

FB407

120 OHM

12

PA9

VLCD

RXO3- RXO3+

PA8

PB7RXE1-

VLCD 7

RXOC-

RXO3+

PB[0..9]4

RXE0+PB8

CN404_PWL

PA0

RXEC+

PA3

PA[0..9]4

RXE2+

PB1

PA3

PA8

RXO1+

RXO2+

PB3

CN404

NC/CONN

123456789

101112131415161718192021222324252627282930PA0

PB[0..9]

PB2

PA4

RXO0-RXO1-

PB0

R436

220 OHM 1/4W

RXE2-

PB7


54

+C609

220uF 16V

+5V_AUDIO

OUTR

R613NC

C607

0.1uF 16V

INR

U60

1_P

IN2

C605

4.7uF 16V

CN603NC/PHONEJACK

5

2

4

3

167

89

1011121314

CN

602_

PIN

3

+ C612

NC/10UF16V

R

SE

U602_PIN6

OUTR

OUT-L+

+5V

C614 NC/1uF 10V

R603 NC/22K 1/16W 5%

C610 1uF 10V

OUTL

R619

NC/100K 1/16W 5%

OUT-L-

R617 NC/10K 1/16W 5%

C611 1uF 10V

+5V4,7

R618 NC/10K 1/16W 5%

FB604 120 OHM1 2

R610 0R05 1/16W

FB601 120 OHM1 2

VOL4

CN602

CONN

1234

AINR4

INL

C613 NC/1uF 10V

MUTE4

OUT-R+

R602

100K 1/16W 5%

U602_PIN7

U602_PIN3

R616 NC/100K 1/16W 5%

CN601NC/PHONEJACK

12354

FB602 120 OHM1 2

+5V_AUDIO

SE

R

C601 NC/1uF 10V

OUT-L+U601_PIN6

OUT-L-

R604 560R 1/16W 5%

R611

1K 1/16W 5%

C

A


715G3502-C<称爹>

5.0.AUDIO


Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

U602

NC/LM358D

1 82 73 64 5

OUT1 VDDIN1- OUT2IN1+ IN2-GND IN2+

R605 10K 1/16W 5%

R609 0R05 1/16W

+5V_AUDIO

OUT-R-

R60

7N

C/3

3K 1

/16W

5%

C60

4N

C/3

30pF

50V

FB603 120 OHM1 2

U601_PIN3

OUT-R-

CN601_L

INR

AOUT_R4

CN601_R

+C608

220uF 16V

CN

602_

PIN

1

CN

602_

PIN

4

R614 NC/10K 1/16W 5%

U601

APA2071JI-TUG 3.1W

12345678 9

10111213141516

SHUTDOWNBYPASSRINNGNDGNDLINNVOLUMESE/BTL LOUTP

VDDLOUTN

GNDGND

ROUTNVDD

ROUTP

+5V_AUDIO

C60

3N

C/3

30pF

50V

U601_LINN

+C606

220uF 16V

INL

U601_RINN

+5V_AUDIO

R601 NC/22K 1/16W 5%

OUT-R+

L

AOUT_L4 OUTL

R60

8N

C/3

3K 1

/16W

5%

R615 NC/10K 1/16W 5%

AINL 4

R612

1K 1/16W 5%

U602_PIN1

L

U602_PIN2

R606 560R 1/16W 5%

FB605 120 OHM1 2

C602 NC/1uF 10V

CN604

NC/CONN

1234


55

DIM

R718

0 OHM 1/4W

D701

NC/SM340A

R711 22K 1/16W 5%

+5V

CN702

NC/CONN

12

VLCD

Q703_G

C711

0.1uF 16V

+5V4,6

on_Panel4

+5V

R712

10K 1/16W 5%

+ C703100UF16V

CN701

CONN

12345678910

C705

0.1uF 16V

+ C710100UF16V

SOT223

+5V_VCC3

+5V

+ C707100UF16V

Q704

2N3904S-RTK/PS

+5V

C718

0.1uF 16V

C712

1uF 10V

SOT223

C713

0.1uF 16V

Q703

AO4411

1234

8765

SSSG

DDDD

R715

NC/4K7 1/16W 5%

R701

10K 1/16W 5%

TO252

+5V

D705 NC/LL4148

R707

10K 1/16W 5%

Q702

2N3904S-RTK/PS

HDMI1_+5V3

C701

0.1uF 16V

R710

NC

C71610uF/10V

C704

0.1uF 16V

VLCD 5

ON/OFF

VCC1.2

U705

NC/AZ1117S-5.0TRE1

1

23

VSS

VOUTVIN

Q70

5_C

R7062.2 OHM 2W

+5V VCC3.3

Q705_B

U703

NC/AZ1117D-1.2TRE1

1

23

ADJ/GND

OUTPUTINPUT

on_BACKLIGHT 4

+ C702100UF16V

R708

4K7 1/16W 5%

VCC3.3

+5V

+5V_VCC

Q701

NC/AO3401

U701

NC/G903T63UF

3 2

1

VIN VOUT

GN

D

FOR TOUCH PANEL

VCC3.3

DVI5V

D702

BAV70

3

1

2

+ C709100UF16V

VCC3.3 4

DVI5V3

+5V

R705 22K 1/16W 5%

U704

G912T63U

3 2

1

VI VO

GN

D

PC5V3

Q705

NC/MMBT2907AK

R717

NC/47K 1/16W 5%

D703

BAV70

3

1

2

VCC1.2 4

Adj_BACKLIGHT 4

C

B

7 7Thursday , April 16, 2009

715G3502-C<称爹>

6.0.POWER


Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

C7060.1uF 16V

U702

23

1

VOUTVIN

GN

D

R709

47K 1/16W 5%

Q704_B

PC5V

TO252

Q702_B

U704_VIN

HDMI1_+5V

R70310K 1/16W 5%

Q70

4_C

R702 100R 1/16W 5%


56

Power Board

+5V1

+C917

470UF M 35V

R943470R 1/8W 5%

HS3HEAT SINK(D906)

12

GND2GND

12

D90731DQ06FC3

C9280.01uF

C909220pF

!

XXXX

L90127mH

1 4

2 3

+ C934NC

R914

0.39 OHM 2W +-5%

FB901BEAD

12

PWPC9E41MQWW 1

Custom

1 3Friday , March 27, 2009715G2824-3-5

ODM MODEL03.POWER

G2824-3-5-X-26-090327

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

C9240.1uF

! !CN903

CONN

1234

C904

NC

D908SP1060

1

2

3

R949 100 OHM 1/4W

C932

0.001uF

!

NC

C9070.1uF

D903 IN4148

L904

CoilC9120.001uF

+5V

+16V

+5V1

R9093.3 OHM 1/4W

R920100 OHM 1/4W

C9021000pF

R919100 OHM 1/4W

HS1HEAT SINK(Q901)

12

+ C9161000uF25V

C931

0.1uF

C9350.001uF

R903

100K OMH 2W +-5%

!

R961 100 OHM 1/4W

-+BD901

GBU408

2

1

3

4

R9261K 1/10W 1%

C9290.001uF

+C918

470UF M 35V

ON/OFF

!

R9302.43K OHM 1% 1/10W

ZD902T ZX18B

NC

-+BD901A

KBP208G

2

1

3

4

VOL

DIM

MUTE

+

C9391000uF/25V

CN901SOCKET

12

3

Q901STP10NK70ZFP

R9058.2K OHM 1/4W

IC904KIA431A-AT/P

L906JUMPER

12

R901

1M 1/4W 5%

C9003300pF 250V

F901FUSE

C921

1000PF/250VAC

L903

Coil

R93810K 1/8W 5% R951 100 OHM 1/4W

GND1GND

12

D900FR107

C937

68pF1KV

R9273K6 1/10W 1%

+ C915470UF M 16V

R910

10R 1/4W 5%

C938

1500PF2KV

! R924100R 1/8W 5%

C9300.1uF

F903

FUSE

!

+ C90822uF 50V

R9048.2K OHM 1/4W

C903

0.47uF

IC903PC123X2YFZOF

12

43

HS2HEAT SINK(D908)

12

R9391K 1/8W 5%

+16V

R94043K 1/10W 1%

+C905150uF/450V

!

!

!

Q903KTD1028

PID

C940

0.047uF

CN902

CONN

123456789

10111213

L905

Coil

NR901NTCR

R918100 OHM 1/4W

D906FMX-12SL

1

2

3

IC901

LD7576

1234 5

678

CTCOMPCSGNDOUT

VCCNCHV

!

R912220 OHM 1/4W

T901POWER X'FMR

1

3

4

5

6

78

910

1112

R946470OHM2W

C9011000pF

C9061500PF2KV

R962 100 OHM 1/4W

R9251K 1/8W 5%

D901FR103

+5V

R950 100 OHM 1/4W

R935 100 OHM 1/4W

FB902

0 OHM 1/4W

R902

1M 1/4W 5%

F902

NC


57

C8100.0033uF

C814220pF

C813NC

R828

6.2M OHM 1W

D807 BAV70

3

1

2

ON/OFF

LV2

R8445K1 1/10W 5%

R83656KOHM +-5% 1/10W

L801

L

1

2

4

3

C818

1.5UF/10V

CN803

CONN

12

C8150.1uF

C809220pF

+5V

L802

L

1

2

4

3

ZD803RLZ5.6B

12

R8035K1 1/8W 5%

Q805

AO4620

1234 5

678

S2G2S1G1 D1

D1D2D2

R8425K1 1/10W 5%

LV3

R815NC

PT801POWER X'FMR6

2

75

1 8

R80110K 1/10W 5%

DIM

C80833NF50V

R8480R05 1/8W

R806

100K 1/10W 1%

ZD802RLZ5.6B

12

R839 1M 1/10W 5%

C82156pF3KV

C8010.047uF

C81956pF3KV

D808 BAV70

3

1

2

R8455K1 1/10W 5%

R8091M 1/10W 5%

R80710K 1/10W 5%

R817 4R7 1/8W 5%

C8062.2uF/16V

LV4

R810

100K 1/10W 1%

R841 1M 1/10W 5%

C82056pF3KV

CN801

CONN

12

XXXX

C8020.047uF

LV1

C8050.022uF

R840 1M 1/10W 5%

C817

2PF6KV

R812

100K 1/10W 1%

R818 4R7 1/8W 5%

LV4

R8045K1 1/8W 5%

CN802CONN

12

LV3

R8376K8 1/10W 5%

R8435K1 1/10W 5%

R838 1M 1/10W 5%

R808360R 1/10W 1%

R830

5K6 1/8W 5%

PID

C82256pF3KV

+16V

R8470R05 1/8W

R8460R05 1/8W

R81182K1/10W

LV2

D803BAV99

3

1 2

D806 BAV70

3

1

2

C8110.1uF

C812NC

LV1R819 4R7 1/8W 5%

D801

IN4148

R813100K 1/10W 5%

+

C804

1000uF/25V

R805NC

CN804CONN

12Q802

2R7002 SOT-23

R816

4R7 1/8W 5%

Q806

AO4620

1234 5

678S2

G2S1G1 D1

D1D2D2

PWPC9E41MQWW 1

Custom


715G2824-3-5ODM MODEL

02.INVERTER

G2824-3-5-X-26-090327

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

R80222R 1/8W 5%

IC801 ta9687GN-A-0-TR

123456789

10111213141516 VSEN

SSTCMPCT

RT1GNDAPDR2GNDPNDR2NDR1

PDR1VDDATIMERPWMISENOVPTENA


58

EAR Board

<Doc> A

BenQ 2320HD B

1 2Thursday , December 25, 2008715G3503-A

备注02.Headphone

G3503-A-x-x-1-20081225

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

HP_R

HP_SENSE

C653

0.01uF

HP_R

C651

0.01uF

C652

0.01uF

R654

0R05 1/10W 5%

HP_L

CN652

CONN

1234

HP_SENSEHP_LCN651

PHONEJACK12354

R651 0R05 1/10W 5%

R653 0R05 1/10W 5%R652 100R 1/10W 5%


59

Key Board

(RIGHT)

(1.8K)

GND

(1.8K)

SW002

SW002

21

3 4

5

LED001LED

231

SW001

SW001

21

3 4

5

C

G920HD(A)

2 2Thursday , December 04, 2008

715G3367-E<称爹>02.KEY BOARD

G3367-E-X-X-2-081223

OEM MODEL Size

Rev

Date Sheet of

TPV MODEL

PCB NAME称爹


Key Component

絬隔瓜絪腹

SW003

SW003

21

3 4

5

ENTER

LBADC2

(LEFT)

GND

SW004

SW004

21

3 4

5

ZD

002

NC

LBADC2

ZD

003

NC

GND

LBADC3

LED_RED#

AUTO

R004 1K 1/10W 1%

0.673V

GND

GND

MEN

U

C00

60.

1uF

C005

NC/0.001uF

R007 3K 1/10W　

R003 1K 1/10W 1%

R005 3K 1/10W　

LEFT

(1.0K)

ZD

005

NC

GND

C004

NC/0.001uF

(3.0K)

ZD

001

NC

C01

00.

1uF

RIGHT

C00

70.

1uF

SW006

SW006

21

3 4

5

1.435V

(Power)

RIG

HT

ZD006

NC

(MENU)PO

WER

1.435V(3.0K)

C002

NC/0.001uF

C00

80.

1uF

B

SW005

SW005

21

3 4

5

1.435V

GNDGND

(ENTER)

LED_GRN#

ZD

004

NC

C01

10.

1uF

LED_GRN#

GND

LBADC1

LBADC1

(AUTO)

GND

R006 1K 1/10W 1%

GND

C00

90.

1uF

R002 3K 1/10W　

0.673V

POWER

CN001CONN123456

78

MENU

ENTE

R

LED_RED#

C001

NC/0.001uF

GND

(3.0K)

GND

AUTO

LEFT

DC_POWERON

0.673V

C003

NC/0.001uF


60

Troubleshooting Guide

Equipments and Tools Requirement

1. Voltmeter.

2. Oscilloscope.

3. Pattern Generator.

4. DDC Tool with and Compatible Computer.

5. Alignment Tool.

6. LCD Color Analyzer.

7. Service Manual.

8. User Manual.

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 it is a natural defect that 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".


61

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.

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 the 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]


62

Main Board

(1) No Power

No power

Press power key and look if the picture is normal

Please reinsert and make sure the AC of 100-240 is normal

Reinsert or check the power section

Check if X401 oscillate waveforms are normal

Measure U702 Pin2=3.3 and U704 Pin2=1.2V

OK

OK

NG

NG

NG Replace U702 and U703

Check U401

Replace X401 OK NG

Check if the Pin 4, 7, 8 of CN701 is 5V input

Check power board NG

OK


63

(2) No picture

No picture

OK NG

X401 oscillate waveforms are normal

Replace X401

Check if the sync signal from computer is output and video cable is connected normally

Input the sync signal of computer, or change the cable

NG

OK NG

Check U401

Replace U401

Measure U702 Pin2=3.3 and U704 Pin2=1.2V

OK NG

Replace U702 and U703

Check if the Pin 4, 7, 8 of CN701 is 5V input

Check power board NG

OK


64

(3) White screen

White Screen

Measure Q701 base is low level?

X401 oscillate waveform is normal

Check Correspondent component.

Replace Panel

Check Correspondent component.

OK OK Replace X401

NG

NG

NG

NG

Check reset circuit of U401 is normalOK

Check Q701 and Q704 are

broken or CN403 solder?Check U401

OK Replace U401 NG


65

Power Board

No power

Check CN902 PIN3, 4 = 5V

Check AC line volt 110V or 220V

Check AC input

Check the voltage of C905 (+)

Check bridge rectified circuit and F901 circuit

Check start voltage for the pin8 of IC901

Check R904, R905, Change IC901 NG

Check the auxiliary voltage is bigger than

10V and smaller than 20V

1) Check IC901

2) Check R909/D901/C908 circuit

OK

OK

NG

Check D907/D908/IC903/IC904/ZD902

OK

Check IC901 pin5 PWM wave

OKCheck IC901

NG

NG

NGOK

NG


66

W / LED, No Backlight

s

Check Inverter input =16V

NGOK Check adapter and ZD802, ZD803

Check ON/OFF signal

Check Interface board or main board NG

OK

Check IC801 PIN 11=5V

NGOK Change ON/OFF circuit

Check IC801 PIN8/PIN9 PWM wave

NGOK Check IC801

Check Q805, Q806 Drain wave

NG

Check the output of PT801

Change Q805, Q808

Check connecter & lamp, feedback and protect circuit

OKNG

Change PT801

OK


67

Keypad Board

OSD is unstable or not working

Is Key Pad Board connecting normally? Connect Key Pad Board

Is Button Switch normally? Replace Button Switch

Y

N

N

Is Key Pad Board normally? Replace Key Pad Board

Y

N

Y

Check Main Board


68

PCB LAYOUT Main Board


69


70

Power Board


71


72


73

Appendix 1 – Screw List / Torque

(HD9SNQMBFWBQDN)

Part No. Type Description Quantity Torque

0G1G1030 8120 M3*8 FOR PB & MAINFRAME

FOR MB & MAINFRAME 4 6±1KGF.CM

0M1G1030 6120 M3*6 FOR MB & MAINFRAME

FOR HMDI & MAINFRAME 2 6±1KGF.CM

0Q1G1030 6120 M3*6 FOR REAR COVER & HEADPHONE

JACK BOARD 1 12±2KGF. CM

AM1G1740 12 47 CR3 M4*12 FOR STAND & HINGE

FOR HINGE & REAR COVER 4 12±2KGF. CM

AQ1G1740 12120 M4*12 HINGE &STNAD 2 12±2KGF. CM

0M1G 930 8120 M3*8 FOR HEAT SINK 1 ~

0M1G 930 8120 M3*8 FOR HEAT SINK 1 ~

0M1G 930 8120 M3*8 FOR HEAT SINK 1 ~

service manual for benq: lcd g2320hd (d-sub +dvi-d +hdmi … · 2018-01-31 · 23” lcd color...

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