BenQ Mainstream MP611 User manual

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Applicable Country & Regions:
All Regions
Product Service Manual – Level 2
Service Manual for BenQ:
Projector / MP611
< 9J.J2C77.000 >
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 (August, 2006)
© Copyright BenQ Corporation 2006. All Right Reserved.

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Content Index
ABBREVIATIONS & ACRONYMS..........................................................................................................................................3
ABOUT THIS MANUAL..........................................................................................................................................................4
INTRODUCTION....................................................................................................................................................................5
RELATED SERVICE INFORMATION ....................................................................................................................................7
PRODUCT OVERVIEW ..........................................................................................................................................................8
SPECIFICATIONS..................................................................................................................................................................... 8
PACKING .............................................................................................................................................................................. 43
CUSTOMER ACCEPTANCE .................................................................................................................................................... 45
DISASSEMBLY/ASSEMBLY...................................................................................................................................................61
EXPLODED VIEW.................................................................................................................................................................. 61
DISASSEMBLY /ASSEMBLY .................................................................................................................................................... 64
LEVEL 1 COSMETIC / APPEARANCE / ALIGNMENT SERVICE......................................................................................64
APPEARANCE ....................................................................................................................................................................... 68
SOFTWARE/FIRMWARE UPGRADE PROCESS ......................................................................................................................... 72
ADJUSTMENT /ALIGNMENT PROCEDURE............................................................................................................................ 76
LEVEL 2 CIRCUIT BOARD AND STANDARD PARTS REPLACEMENT.........................................................................125
TROUBLESHOOTING .......................................................................................................................................................... 125
LEVEL 3 - COMPONENT REPAIR TO CURCUIT BOARDS ............................................................................................130
THEORY OF CIRCUIT OPERATION ...................................................................................................................................... 130
CIRCUIT SCHEMATICS........................................................................................................................................................ 149
PCB ARTWORK.................................................................................................................................................................. 152
APPENDIX 1 – SCREW LIST /TORQUE ............................................................................................................................161
APPENDIX 2 – CODE LIST: IR/RS232 ...............................................................................................................................162

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Abbreviations & Acronyms
A
A/D Analog to Digital
B
BenQ BenQ Corporation
D
DLP Digital Light Processing
DMD Digital Micromirror Device
DVI Digital Video Interface
DVI-I Digital Video Interface-Integrated
P
POM Pond of Mirrors
R
RS232 Interface Between Data Terminal Equipment and Data
Communications Equipment Employing Serial Binary Data
Interchange
S
SVGA Super Video Graphics Array. A screen resolution of 800 x 600
pixels.
SXGA Super XGA. A screen resolution of 1280x1024 pixels.
V
VGA Video Graphics Array. A screen resolution of 640 x 480
resolution.
X
XGA A screen resolution of 1024 x 768 pixels.

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About This Manual
This manual contains information about maintenance and service of BenQ products. Use this
manual to perform diagnostics tests, troubleshoot problems, and align the BenQ product.
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”.
Trademark
The following terms are trademarks of BenQ Corporation:
BenQ
Other companies, products, or service names may be the trademarks of their respective companies.

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Introduction
This section contains general service information, please read through carefully. It should be stored
for easy access place.
Important Service Information
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.
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, or it may explode.
9. Refer to government requirements for battery recycling or disposal.

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Compliance Statement
1. 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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General Descriptions
This Service Manual contains general information. There are 3 levels of service:
Level 1: Cosmetic / Appearance / Alignment Service
Level 2: Circuit Board or Standard Parts Replacement
Level 3: Component Repair to Circuit Boards
Related Service Information
BenQ Global Service Website:http://support.benq.com/front/benqmain.asp
eSupport Website:http://bqpgsr.benq.corp.com/customize/asplogin.asp

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Product Overview
Specifications
1.0 Optical Performance
Tested under 60” (diagonal) image size with Wide projection lens
position unless other specified. Measurement Details refer to
Appendix A. Reference meter : BENQ Factory T10 meter
(SN:M040000850)
1.1 ANSI Brightness Minimum 1920 Lumens
1.2 Brightness Uniformity
1.2.1 ANSI Uniformity Minimum 50%
1.2.2 Upper-Down unbalance 0.5~2
1.2.3 Left-Right unbalance 0.6~1.67
1.3 Contrast Ratio
1.3.1 ANSI Contrast Minimum 150:1
1.3.2 FOFO Contrast Minimum 1200:1
1.4 Light Leakage
1.4.1 Light Leakage in Active Area
<0.5 lux compared to center point within 60” (Diagonal at 2.2m,
Wide) image size. Note: This light leakage in Active area is only
described as the spot light with obvious shape. It is not included
the uniformity difference of the projector for black pattern.
1.4.2 Light Leakage out of Active
Area
<0.5 lux between of 54” (Diagonal at 2m, Tele) image size and
60” (Diagonal at 2.2m, Wide) image size.
1.5 Color Reference meter: BenQ YM5A/Measurement Center Integral
sphere
X Y
1.5.1 White 0.315±0.04 0.344±0.04
1.5.2 Red 0.630±0.04 0.353±0.04
1.5.3 Green 0.353±0.04 0.535±0.04
1.5.4 Blue 0.139±0.04 0.096±0.04
1.6 Color Uniformity X Y
1.6.1 White 0.040 0.040
1.6.2 Red 0.040 0.040
1.6.3 Green 0.040 0.040
1.6.4 Blue 0.040 0.040
2.0 Image Quality

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2.1 Throw Ratio 54”±5% Diagonal at 2m, Wide
2.2 Zoom Ratio (tolerance
applied) > 1.10 : 1
2.3 Distortion
2.3.1 Keystone Distortion <1.0%
2.3.2 Vertical TV Distortion <1.0%
2.3.3 Screen distorsion l W2-W1 l <6mm , l H2 –H1 l <6 mm
2.4 Projection Offset 120% ±5%
2.5 Focus Range
2.5.1 Visible Range 1~8 m
2.5.2 Clearly Focus Range 1.5~6 m(Spec. defined as item 2.6)
2.6 Focus
2.6.1 区Pattern (1)If pattern can be uniformly focused, pass!
(2)If not, check 2.6.2
2.6.2 Defocus and Flare
Defocus: R<=3.0; G<=2.5; B<=2.5 pixel
Flare: R<=4.0; G<=3.5; B<=3.5 pixel
Slight flare is not counted as flare.
2.6.3 Focus unbalance Adjust focus from near to far until one corner clear, difference less
than 70 cm
Center of
49”diagonal area All other area
R-G <2/3 <1
G-B <2/3 <1
2.7 Lateral Color
R-B <1 <1
2.8 Image Quality
2.8.1 DMD Image Quality See Appendix D
2.8.2 Image Imperfection See Appendix D Blemish
2.8.3 Image Shadow or Blur
Procedure:
1. 53” (Diagonal at 2m, Wide) image size.
2. Default preset mode “ Dynamic”
3. Full white pattern to check the image.
Let the projector on the desk (don’t move it up/down or left/
right) and just inspect the pattern. It is OK If the shadow or blur
can not be observed obviously.
4. If there is blur obviously, Measure brightness of point Aand
brightness of point B. A/B must larger than 80%.detail
description see Appendix A21

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3.0 Mechanical Specification
3.1 Dimensions 278 x 219.5 x 94 mm (L x W x H)
3.2 Weight 2500g ± 100g
3.3 Security Slot Kensington compatible slot 150N break away force
3.5 Lens Cover Detached Lens Cover
3.6 Feet Fast adjustable foot in front, Adjustable foot and Fixed foot in
rear. foot Tilt:0-6∘,right/left: +2.2∘/-0.5∘
4.0 Packaging Detail refer to C309 (Packing Description)
4.1 Outside Dimensions 365 x 230 x 325mm (L x W x H)
4.2 Weight <5.5 Kg (Including Accessories, Projector).
4.3 Palletization A type 24,B type 36 by Air; 2016 / 40’ container, or 1008/20’
container by sea
5.0 Thermal Specification Mechanical component temperature at ambience 0~40℃
5.1 Surface held or touched
for short periods
Normal surface:
Metal < 60°C; Plastic<85°C
Bottom surface: @ 25°C
Metal < 55°C; Plastic<70°C
Metal Plastic5.2 Surface which may be
touched <70°C <95°C
5.3 Exhaust Air <95°C
6.0 Environmental Adhere to Appendix B
Operating 0~40°C, without condensation
6.1 Temperature Storage -20~60°C, without condensation
Operating 10~90%RH, without condensation
6.2 Humidity Storage 10~90%RH, without condensation