BenQ E2220HD User manual

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Applicable Country & Regions: USA & Canada
Service Manual for BenQ:
LCD E2220HD
(D-SUB +DVI-D +HDMI +
USB + Glossy black Bezel
with silver for mid frame)
Product Service Manual – Level 1~2
Version: 2nd
Date:09-02-2009
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 (July, 2009)
©Copyright BenQ Corporation 2009. All Right Reserved.

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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...................................................................................................................................7
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
ISP writing card and connecting instruction ...........................................................................................................12
DDC instruction ......................................................................................................................................................16
Adjustment / Alignment Procedure .........................................................................................................................32
Level 2 Circuit Board and Standard Parts Replacement ......................................................................................45
Product Exploded View ..........................................................................................................................................45
Six angles’ view ......................................................................................................................................................47
Product Disassembly..............................................................................................................................................48
Block Diagram ........................................................................................................................................................53
Schematic Diagram ................................................................................................................................................55
Troubleshooting Guide ...........................................................................................................................................68
PCB LAYOUT .........................................................................................................................................................76
Appendix 1 – Screw List / Torque ...........................................................................................................................83

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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

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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 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 E2220HD offers numerous features and functions, for
example:
yTFT display (Thin Film Transistor; active matrix)
yMinimal space requirements thanks to slim casing
yOptimum ergonomic characteristics (totally distortion-free, excellent picture definition and color purity right into
the corners)
yContrast ratio 1000:1, brightness 300 nits
yWUXGA resolution (1920x1080)
yPresentation of up to 16.7 M colors (in conjunction with an appropriate graphics card)
yAutomatic scanning of horizontal frequencies from 24 to 83 kHz and refresh rates (vertical frequencies) from 50
to 76 Hz (absolutely flicker-free)
yDigital screen controller with microprocessor for storing 34 different display modes
yFreely adjustable color alignment for matching the screen colors to the colors of various input and output devices
yConvenient operation via integrated OSD (On-Screen-display) menu
yVESA E-EDID compatibility
yPower management for reducing power consumption when the computer is not in use
yCompliance with Worldwide regulations
This operating manual contains important information you require to start up and run your LCD monitor.
This specification defines the requirements for the 21.5” MICROPROCESSOR based Multi-mode supported high
resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGA connector, DVI-D
connector and HDMI connector, also supports VESA DPMS power management.
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 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

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5. Product Overview
5.1 Monitor Specifications
E2220HD
D-sub (include component source)+ DVI-D + HDMI
Panel / Display
Panel Type (TN / VA / IPS) TN
Panel Size 21.5"W
Display Area 476.64 (H) x 268.11 (V)
Max. Resolution 1920 x 1080
Pixel Pitch 0.248 (per one triad) x 0.248
Brightness (Typ.) 300 nits
Contrast Ratio (Typ.) / DCR (Min.) 1000:1 (Panel) / 50000:1 (DCR)
Viewing Angle (H/V), CR≧10 170/160
Display Colors 16.7M (6bit+Hi-FRC)
Response Time 5ms (Tr+Tf)
GtG response Time N/A
MPRT N/A
NTSC ratio 0.72
Panel maker AUO & CMO
Video
BenQ SenseyeTM Technology Yes
BenQ SenseyeTM Preset Modes 6 Modes (by hotkey) : Standard / Movie / Game / Photo /
s-RGB / ECO
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) 1.5W x 2
Input / Output
PC Video Input D-sub + DVI-D + HDMI1.3 x2
Audio line in Yes
Audio line out Yes
Earphone Jack Yes

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Power Supply
Voltage Rating AC: 100~240V (Built-in)
Power-On Mode 63W
Standby Mode <1W
Power Off Mode <0.5W
Mechanical Design
Chassis Colors (proposal A) Glossy black (silver for mid frame), detail refer to artwork
Carton Brown Carton with at least C flute (A flute CTN for BQjp
shipments)
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') >1600
Container Loading (20') >800
Multi-language
Support OSD
17 Languages (English / Francais / Deutsch / Italiano /
Espanol / Polish / Czech / Hungarian / Serbo-croatian /
Romanian / Netherlands / Russian / Swedish / Portuguese
/ Japanese / Chinese / S-Chinese)
Other feature
Vista Vista Premium
HDMI RGB PC Range RGB(0~255) / RGB(16~235)
USB2.0 Yes (4 ports)
Accessories VGA cable, power cord, audio cable, USB cable, 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.
Note: The four corners of the EPE bag can not be stretched.
2. Using the EPS to pack the monitor from left to right.

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3. Putting the base, user manual and D-SUB cable in the position as the picture shows above.
4. Putting the monitor and accessories into the carton.
Base and user manual
Power cord
D-Sub cable pulled out of
this hole

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Level 1 Cosmetic / Appearance / Alignment Service
Visual Inspection & Cleaning
yCleaning. 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.
ySlots 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.
yNever push objects or spill liquid of any kind into this product.
Software/Firmware Upgrade Process
Operation condition:
1. The PC with print port,WIN98/NT/2000/XP OS at list;
2. PC Must install Port95nt printing driver if ISP can not be written after install ISP writing software, please install
driver program by unzip and run“Port95nt.exe”
3. PC Must install ISP writing software before ISP writing, Install ISP writing software by unzip “ISP_Tool V4.3.4”
4. One ISP written card(see the picture as below);
5. The monitor waiting for rework;
6. Printing cable and signal cable for rework;
Wire connection instruction:
Connecting operation before ISP written:
1. Connect one of printing wire to PC print port;
2. Connect the other of printing wire to ISP writing card;
3. Connect the monitor waiting for reworking to ISP writing card with signal cable;
4. Printing cable, signal cable and ISP writing card as below:
ISP writing card and connecting instruction
AC Power Signal cable
PC print port
The monitor waiting
for reworking

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ISP setting:
1. Double click “Mstar ISP Utility V4.3.4”
2. Click “Read”
3. Click “Read” to read MCU file.
Click Read
Read MCU file MCU file

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4. Check the “Checksum” and the “File Start and End Address”
5. Click “Config”
6. Click “connect”, if appears the dialog “Can’t Entry ISP Mode”, then click “Dis Con” and then click connect again.
Checksum is ok
File start and end
address is ok
Write speed setting

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Program Writing
1. Click “Auto’
2. Click “Run” to start writing
3. Write over display “PASS”.
Must select
the File Area
Writing…
The end
display “Pass”

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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 because 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. When does 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, TPVDDC.exe” program.
d. EDID BOARD (x1), Printer cable(x1), VGA cable (x1), DVI cable (x1), Power cord (x 2), 12V DC power source
2. 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.
3. Connect the DDC Board as follow:
Note:
1. The monitor must be power on.
2. If you can not write the digital EDID, try to cut off the pin 15 of the connector.
3. Turn off the monitor, keep pressing the “MENU” + “ENTER” buttons, and turn on the monitor, then when we
press the AUTO button, the factory OSD will be at the left top of the panel as below, set the WP “Off “.
Connect to
the PC LPT
When you write analog
EDID, Connect this port
12V DC Input
When you write digital
EDID, Connect this port

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4. Take analog DDC write for example, as follow
a. Double-click ,appear as follow:

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

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d. Key in the same 13 numbers in the Input SN and Verify SN,
e. Click “Program”, when the analog DDC Write complete, it will show the picture as follow:

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The interface of HDMI DDC writing is as follow:
Note:
The way of HDMI DDC Writing is the same as analog and DVI.