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

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Typical Normal mode: 31dBA @ 25°C
Eco mode: 26dBA @ 25°C
6.3 Audible Noise Level
Maximum Normal mode: 32dBA @ 25°C
Eco mode: 27dBA @ 25°C
6.4 Altitude
Operating:
Without high altitude mode 0°C~35°C @ 0~1499m above sea
level
With high altitude mode 0°C~30°C @ 1500~3000m above sea
level
Non-operating:
30℃@0~12,200m above sea level
6.5 Shock Non-operating, 20 ms /50 G
6.6 Drop 91cm, 1 selected corners, 3 selected edges and 6 primary surfaces.
1 drop per orientation, and total of 10 drops
Sine 5~200Hz, 1.5G, 1 octave/min,15 min dwell on each
resonant frequency, all primary axis, one sweep (30
min minimum) per orientation, total of 90+ min.
6.7 Vibration
Random 5~100 Hz, 0dB/Oct, 0.015 (g2/Hz); 100~200 Hz,
-6dB/Oct, N/A; 200Hz, N/A, 0.0038 (g2/Hz).
Equivalent to 1.47 Grms, All primary axis, 20 min
per orientation, total 60min.
Safety cCSAus, TUV-GS, CCC, CB Report, PSE, GOST-R, PSB,
SASO
EMC FCC Class B requirements, C-Tick, VCCI, MIC
CE
Marks
Directive 73/23/EEC;
Directive 89/336/EEC
7.0 Regulatory
ESD BENQ ESD Specification
8.0 Reliability
8.1 MTBF 20000 hours except DMD chip, Color wheel, Lamp and Fan
8.2 Lamp Lifetime Normal : 1500 hours (50% brightness maintenance)
Eco: 2500 hours
9.0 Power Requirements Adhere to Appendix F
9.1 Power Supply (Normal) VAC 100 – 240 (50/60Hz), VAC 90 – 264 (50/60Hz),
Typical 285W Max. 305W Max.
9.2 Power consumption Standby 5W Max. 5W Max.

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9.3 Power Connector IEC-06
10.0 Panel Specification
10.1 Type Single Chip 0.55” SVGA 12°tilt DDR DMD
10.2 Pixels H: 800 X V: 600
10.3 Color Depth 24 Bits (16770000 colors)
11.0 Compatibility Appendix E3
11.1 PC PC Compatible 640X480 Æ1024X768, compressed 1280X1024;
Composite-Sync; Sync-on-Green; Interlace Mode (8514A);
11.2 Video NTSC/ NTSC4.43/ PAL (Including PAL-M, PAL-N)/ SECAM/
PAL60/
11.3 YpbPr NTSC (480i)/ 480p/ PAL (576i)/ 576p, HDTV (720p/ 1080i)
11.4 DDC DDC 2B
12.0 Image Interface Adhere to Appendix E.2
12.1 Analog RGB Input
15 pin D-Sub (Female) x 1
G(Y): Video amplitude 0.7/1.0 Vp-p : Impedance 75
RB(CbCr): Video amplitude 0.7 Vp-p : Impedance 75
HD/VD/CS: TTL Level
12.2 Video Input RCA jack (Yellow)
Video amplitude 1.0 Vp-p : Impedance 75Ω
12.3 S-Video Input
4 pin Mini-Din (Female)
Y: Luminance amplitude 1.0 Vp-p : Impedance 75Ω
C: Chroma amplitude 0.268 Vp-p : Impedance 75Ω
12.4 YPbPr Input 15 pin D-Sub (Female) x 1
Y: Luminance amplitude 1.0 Vp-p: Impedance 75Ω
PbPr/CbCr: Chroma amplitude 0.7 Vp-p : Impedance 75Ω
12.5 Analog RGB Output 15 pin D-Sub (Female) x 1
G(Y): Video amplitude 0.7/1.0 Vp-p : Impedance 75
RB(CbCr): Video amplitude 0.7 Vp-p : Impedance 75
HD/VD/CS: TTL Level
13.0 Control Interface
13.1 IR Receiver IR Receiver x2 (Front, Rear) Angle: ±15°Distance 0~8m
13.2 Serial Connector RS232 8pin Mini DIN
13.3 USB Connector B Type USB Terminal for page up/down
14.0 User Interface Adhere to Appendix E.3
14.1 Operator Keypad
9 Keys:
Power ; Source ; Auto ; Blank/Q? ; Preset ; Left; Right ; Up ;
Down(Menu) ; Mode

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14.2 Indicators 3 LEDs:
Power On/Off Status; Lamp Status; Temperature Status
14.3 Electric Keystone vertical keystone and adjustable range ±7°
15.0 Audio
15.1 Audio Input Φ3.5mm stereo mini jack
350mVrms 10 KΩor more
15.2 Speaker 8Ω2W X 1
Appendix A Optical Measurement
1. Scope:
This document describes critical optical related test definitions and Instructions for data or video
projectors. The other general terminologies are specified in ANSI IT7.228-1997.
2. General Requirements
1. The unit under test should be allowed to stabilize without further adjustment for a minimum of
5 minutes, at nominal ambient room temperature of 25°C, before making measurements.
2. Measurements shall take place in a light proof room, where the only source of illumination is
the projector. Less than 1 lux of the light on the screen shall be from any source other than the
projector.
3. All measurements shall be made on flat screens that do not provide any advantage to the
performance of the unit
4. All measurements shall be made at standard color temperature setting, 100% white image (per
ANSI IT7.228-1997), except where noted
3. Practical Requirements
1. When measuring contrast manually, operators should not wear white clothing since light
reflected from white clothing can influence the measurement.
2. Unless otherwise specified, the projection lens is set in the widest zoom position since zoom
function can influence the measurement.
3. Measurement should be performed with Minolta Chromameter, Model CL-100, or equivalent.
A1. ANSI BRIGHTNESS
ANSI Lumens = (L1+L2+L3+L4+L5+L6+L7+L8+L9)/9 (lux) x A (m^2)
A (Area) = W * H (m^2)

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W: width of projected image (m)
H: height of projected image (m)
L11
L13 L12
L10
L1 L2
L4
L7
L5
L8 L9
L3
L6
Note: L10, L11, L12, L13 are located at 10% of the distance from corner itself to L5
A2. ANSI UNIFORMITY
ANSI +Uniformity= [Maximum (L1~13)-Average (L1~9)]/ Average (L1~9)%
ANSI -Uniformity= [Minimum (L1~13)-Average (L1~9)]/ Average (L1~9)%
A3. JBMA UNIFORMITY
JBMA Uniformity = Average (L1, L3, L7, L9)/ L5
A4. ANSI CONTRAST
ANSI Contrast = Average lux value of the white rectangles/Average lux value of the black rectangles
Contrast Ratio shall be determined from illuminance values obtained from a
black-and-white ”chessboard” pattern consisting of 16 equal rectangles. The white rectangles shall be
at 100% gray and the black rectangles at 0% gray. Illuminance measurements shall be made at the
center of each of the rectangles.
A5. FOFO CONTRAST
FOFO Contrast = Lux value at the center of a solid white screen/the lux value at the center of a solid
black screen

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A6. JBMA CONTRAST
JBMA Contrast = Average (L1,L2,L3,L4,L5,L6,L7,L8,L9) under solid white / Average
(L1,L2,L3,L4,L5,L6,L7,L8,L9) under solid black
A7. LIGHT LEAKAGE
Leakage = The maximum light leakage under a solid black pattern in or outside of the projected
image
A8. IMAGE DISTORTION
Keystone = (W2-W1)/ (W1+W2) x 100%
Vertical TV dist = (H1+H2-2xH3)/2H2 x100%
Horizontal TV dist = (W1+W2-2xW3)/2W1 x100%
W1: image width at image bottom
W2: image width at image top
W3: image width at the half image height.
H1: image height at image left
H2: image height at image right
H3: image height at half image
Note:
1. Keystone and Vertical TV Distortion are recommended for Front Projection Display
2. Vertical and Horizontal TV Distortion are recommended for Rear Projection Display
A9. THROW RATIO
Throw ratio = projection distance / the width of the projected image
A10. ZOOM RATIO
Zoom ratio = maximum / minimum image diagonal size at a fixed projection distance
H1 H3 H2
W3
W1
W2

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A11. FOCUS RANGE
The minimum/maximum focus distance is the minimum/maximum projection distance (The
distance between the outermost element of projection lens and screen), expressed in meter, at which
the image is still at its acceptable focus level.(acceptable focus level is specified by FOCUS LIMIT
SAMPLE approved by customer)
A12. COLOR
Color is expressed as (x, y) in 1931CIE chromaticity values
Note: Color is measured at the center of the screen that is entirely the measured color under default
brightness and contrast settings
A13. ANSI COLOR
ANSI Color is expressed as (u, v) in 1976 CIE chromaticity values
Note: Color is measured at the center of the screen that is entirely the measured color under default
brightness and contrast settings.
A14. COLOR UNIFORMITY
Color Uniformity is the maximum color difference (△x, △y) between any two points out of L1~L13
A15. ANSI COLOR UNIFORMITY
ANSI Color Uniformity: △u’v’= [(u’1-u’0)^2+(v’1-v’0)^2]^1/2
(u’0,v’0): the average color of L1~L13
(u’1,v’1): the spot with maximum deviation from (u’0,v’0)
A16. PROJECTION OFFSET
Projection Offset= Center of image above projection lens optical axis / Half image height x 100%
Note: Optical engine should be kept horizontal attitude
A17. Defocus and Flare Test Procedure
Procedure:
Step 1: Get best focus at Screen Center with Pattern1
Step 2: Check specified screen sizes and zoom positions
Step 3: Use Chart1 to measure Defocus and Flare for whole screen of R,G,B color at Pattern 2,3,4 and
record the maximum number
Example of 1.5 pixel flare:

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i.
A18. Lateral Color Test Procedure
Procedure:
Step 1: Get best focus at Screen Center with Pattern 1
Step 2: Check specified screen sizes and zoom positions
Step 3: Use Chart1 to measure Lateral Color for whole screen with Pattern 5 and record the
maximum number
a. Example if 0.6 pixel lateral color:
A19. Lamp Lifetime Test Procedure
50% lamp brightness maintenance under 3.5hr ON, 0.5hr OFF cycling test
1.5 pixels
Grid of 1.5
pixels
Flare
Defocus
1 Pixel
Center of G B (with defocus only, no count of flare)
G
B
Defocus of Blue
Flare of Blue
About 0.6 pixels

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Pattern 1 (Please contact BenQ RD for file with correct resolution)
Pattern 2 (Please contact BenQ RD for file with correct resolution)

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Pattern 3 (Please contact BenQ RD for file with correct resolution)
Pattern 4 (Please contact BenQ RD for file with correct resolution)
Pattern 5 (Please contact BenQ RD for file with correct resolution)

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Chart 1 Example of Pixel Testing Pattern (60” screen size)
(Please contact BenQ RD for file with correct size)