Product Service Manual – Level II
Service Manual for BenQ:
GL2460
GL2460HM
P/N: 9H.LA6LB.QPx
P/N: 9H.LA7LB.QBx
Applicable for All Regions
Version: 001
Date:2012/11/19
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 (Nov. 2012)
© Copyright BenQ Corporation 2012. All Right Reserved.
- 1 -
Content Index
Abbreviations & Acronyms ............................................................................. 3
1 About This Manual ....................................................................................... 3
1.1. Trademark ............................................................................................................ 3
2 Introduction .................................................................................................. 4
2.1. RoHS (2002/95/EC) Requirements ...................................................................... 4
2.2. Safety Notice........................................................................................................ 4
2.3. Compliance Statement ......................................................................................... 4
2.4. General Descriptions ........................................................................................... 4
2.5. Related Service Information ................................................................................. 4
3 Product Overview ........................................................................................ 5
3.1. Specification ......................................................................................................... 5
4. Level 1 Cosmetic / Appearance / Alignment Service .............................. 27
4.1. Software / Firmware Upgrade Process .............................................................. 27
4.2. Alignment procedure (for function adjustment) ................................................... 38
5. Level 2 Disassembly /Assembly Circuit Board and Standard Parts
Replacement .................................................................................................. 41
5.1. Exploded View ................................................................................................... 41
5.2. Disassembly /Assembly ..................................................................................... 42
5.3. Packing .............................................................................................................. 48
5.4. Block diagram .................................................................................................... 49
5.5. Trouble Shooting Guide ..................................................................................... 51
5.6. Circuit operation theory: ..................................................................................... 55
Appendix 1 – Screw List / Torque ................................................................. 58
Appendix 2-Physical Dimension Front View and Side view ....................... 61
- 2 -
Abbreviations & Acronyms
1 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.
1.1. Trademark
The following terms are trademarks of BenQ Corporation:
BenQ
Importance
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 “Safety Note”.
- 3 -
2 Introduction
This section contains general service information, please read through carefully. It should be
stored for easy access place for quick reference.
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. DO NOT perform any
action that may cause a hazard to the customer or make the product unsafe.
3. Use proper safety devices to ensure your personal safety.
4. Always use approved tools and test equipment for servicing.
5. Never assume the product’s power is disconnected from the mains power supply. Check that
it is disconnected before opening the product’s cabinet.
6. Modules containing electrical components are sensitive to electrostatic discharge (ESD).
Follow ESD safety procedures while handling these parts.
7. 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.
8. 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.
2.4. 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
2.5. Related Service Information
BenQ Global Service Website: http://www.benq.com/support/
eSupport Website: http://esupport.benq.com/v2
- 4 -
3 Product Overview
Feature items
Specifications
Remark
Panel supplier & module name
AUO M240HW01 VD
TN, LED backlight
Screen diagonal
24”
531.36(H)x298.89(V)
Display Format
1920 (H) x 1080 (V)
Panel Display information
Pixel Pitch
0.27675 mm x 0.27675 mm
per one triad
Color Gamut
69%
Viewing Angle (@ Contrast Ratio >= 10)
R/L:170 degrees (typ)
U/D: 160 degrees (typ)
Analog interface with Scaling supported
Yes
With 15-pin D-sub
connector
DVI interface with Scaling supported
Yes
HDMI interface with Scaling supported
Yes
Only for GL2460HM
Video interface with Scaling supported
No Max resolution mode supported
1920x1080@60Hz
Number of Display Colors supported
16.7 millions
6 bit+Hi_FRC
Contrast Ratio
1000:1 (typ.)
Test Condition:
Contrast=50,
Brightness=100,
Color=User mode
Luminance
250 cd/m2 (typ.)
Test Condition:
Contrast=100,
Brightness=100,
Color=User mode
Color Temperature
1) Bluish mode:
(x,y)=
(0.283, 0.297)+/-(0.02, 0.02)
(2) Reddish mode:
(x,y)=
(0.326, 0.342)+/-(0.02, 0.02)
3.1. Specification
Introduction
This specification describes GL2460 which is a 24” Green-Product with VGA+DVI and GL2460HM
which is a 24” Green-Product with VGA+DVI +HDMI interface and earphone output color TFT LCD
monitor. The monitor supports maximum resolution up to 1920x1080 with analog/digital inputs.
The features summary is shown as below,
*All spec. of monitor need to warm up at least 1hr.
* To test the “Contrast Ratio” and “Luminance” functions, the color status must be “User preset”
mode.
* 1. “Contrast Ratio”: Set “brightness” at 100, and “contrast” at 50.
* 2. “Luminance”: Set “brightness” at 100, and “contrast” at 100.
- 5 -
(3) 6500K mode :
(x,y)=
(0.313, 0.329)+/-(0.02, 0.02)
(4) sRGB:
(x,y)=
(0.313, 0.329)+/-(0.015,
0.015)
AC power input
Yes
90-264 Volts, 47-63 Hz.
DC power input (with AC power adapter)
No
DPMS supported(Power Saving)
Yes
<0.3W
LED indicator for power status showed
Yes
Green/Amber
OSD for control & information supported
Yes
Multi-language supported for OSD
Yes
17 languages
Buttons control supported
Yes
6 buttons including 1
monitor power on/off
control button.
Flywheel control supported
No Scaling function supported
Yes
Auto adjustment function supported
Yes
“i-Key” function
DDC function supported (EDID ver. 1.3)
Yes
DDC2B
DDC-CI support version 1.1 or later
Yes
DDC-CI
Audio speakers supported
Yes
1Wx2 Only for GL2460HM
Audio Jack (input connector) supported
Yes
Only for GL2460HM
Earphone Jack (input connector)
supported
Yes
Only for GL2460HM
Microphone function supported
No Mechanical Tilt base design
Yes
From -5 to +20 degree
VESA wall mounting design
Yes
Mechanical Rotate design
No Mechanical Lift base design
No
Kensington compatible lock design
Yes
Item
Condition
Spec
OK
N.A
Remark
Input Voltage range
Universal input full
range
90~264VAC /47~63Hz
Input Current range
90 ~ 264VAC
< 1.5 Arms
Power Consumption
Normal “On” operation
<35W
LED: Green
DPMS
DPMS “Off” state
DPMS “Sleep” state
< 0.3 W
< 0.3 W
LED: Off
LED: Amber
Inrush Current
110 VAC
220 VAC
<40 A (peak)
<80 A (peak)
Cold-start
Earth Leakage Current
264 VAC/50Hz
< 3.5 mA
Hi-Pot
1500VAC, 1 sec
Without damage
(on-line test)
Ground test
Ground test: 30A, 1sec
< 0.1 ohm
Power Line Transient
IEC1000-4-4
1KV
Operational Specification
3.1.7.1 Power supply
- 6 -
IEC1000-4-5 (Surge)
Common: 2KV,
Differential: 1KV
LED operation range
90 ~ 264VAC
60mA (Typ.)
Depends on panel
source (Operation
with fixed driving
current)
CCFL Frequency
90 ~ 264VAC
40KHz ~ 80KHz
Depends on panel
source
Power cord
Color: Black
Length: 1500 +/- 50
mm
Item
Condition
Spec
OK
N.A
Remark
Signal Cable
15-pin D-Sub
Color: Black
Length: 1500 +/- 30
mm
24-pin DVI-D
Color: Black
Length: 1500 +/- 50
mm
19-pin HDMI
Only for
GL2460HM
Pin assignment
15-pin D-sub
connector
See Note-1
24-pin DVI-D
connector
See Note-2
HDMI
See Note-3
Only for
GL2460HM
Video input
Signal type
Separate analog R/G/B
For 15-pin D-sub
Level
700 mV (peak to peak)
Impedance
75 Ohms +/- 1.5 Ohms
Sync input
Signal type
Separate H/V-sync
Composite H/V-sync
(Positive/Negative)
For 15-pin D-sub
Level
Logic High: 2.4V ~
5.5V
Logic Low: 0V ~ 0.5V
(TTL level)
Refer to VESA
VSIS Standard
V1R1
Impedance
Minimum 2.2KΩ(pull
down)
10KΩ for
application
Sync Pulse Width
(SPW)
0.7μs < H-SPW
1H < V-SPW
3.1.7.2 Signal interface
- 7 -
Note-1: The pin assignment of 15-pin D-sub connector is as below,
Pin
Signal Assignment
Pin
Signal Assignment
1
Red video
9
PC5V (+5 volt power)
2
Green video
10
Sync Ground
3
Blue video
11
Ground
4
Ground
12
SDA
5
Cable Detected
13
H-Sync (or H+V)
6
Red Ground
14
V-sync
7
Green Ground
15
SCL
8
Blue Ground
Pin
Signal Assignment
Pin
Signal Assignment
1
TMDS RX2-
13
Floating
2
TMDS RX2+
14
+5V Power
3
TMDS Ground
15
Ground
4
Floating
16
Hot Plug Detect
5
Floating
17
TMDS RX0-
6
DDC Clock
18
TMDS RX0+
7
DDC Data
19
TMDS Ground
8
Floating
20
Floating
9
TMDS RX1-
21
Floating
10
TMDS RX1+
22
TMDS Ground
11
TMDS Ground
23
TMDS Clock+
12
Floating
24
TMDS Clock-
Note-2: The pin assignment of 24-pin DVI-D connector is as below,
- 8 -
Note-3: The pin assignment of 19-pin HDMI connector is as below
Item
Condition
Spec
OK
N.A
Remark
Max. support Pixel rate
Analog 205 MHz
Max. Resolution
1920 x 1080
Rise time + Fall time
<2.439 ns
(50% of minimum pixel
clock period)
(1/205MHz)*50% =
2.439ns
Settling Time after
overshoot /undershoot
< 5% final full-scale
value
Refer to VESA
VSIS Standard
V1R1
Overshoot/Undershoot
< 12% of step function
voltage level over the
full voltage range
Refer to VESA
VSIS Standard
V1R1
3.1.7.3 Input Video performance Requirement (for VGA)
- 9 -
Item
Condition
Spec
OK
N.A
Remark
Horizontal
30 ~ 83 KHz
Vertical
50 ~ 76 Hz
Item
Condition
Spec
OK
N.A
Remark
DDC channel type
DDC2B
EDID
Version 1.3
Refer to S/W
spec.
document to
see the
detailed EDID
data
definition.
DDC-CI
Version 1.1 or Later
Refer to S/W
spec
3.1.7.4 Scan range
3.1.7.5 Plug & Play DDC2B DDC-CI Support
3.1.7.6 Support Timings
- 10 -
Operational & Functional Specification
Item
Condition
Spec
OK
N.A
Remark
Resolution
Any input resolution
modes which are under
1920x1080
1920 x 1080
Contrast ratio
1000:1 (typ.)
Test
Condition: Set
Contrast at
50, Brightness
at 100, and
Color at User
preset.
Brightness
At R/G/B saturated
condition
250 cd/m2(Typ.)
Test
Condition: Set
contrast at
100,
brightness at
100, and color
at User
preset.
Response time
Rising + Falling time
5 ms (typ.)
Test
Equipment:
Westar TRD
100 or equal
level
equipment ;
Viewing angle
At Contrast ratio = 10
R/L: 170 degrees (typ.)
At Contrast ratio = 10
U/D: 160 degrees (typ.)
Display colors
16.7 Millions colors
6 bit+Hi_FRC
Color mode
Color temperature
x Y
Normal
6500k
0.313±0.020
0.329±0.020
Min 180cd/m2
Bluish
9300k
0.283±0.020
0.297±0.020
Min 160 cd/m2
Reddish
5800k
0.326±0.020
0.342±0.020
Min 180 cd/m2
User Mode
Panel default color
temp.
Min 200 cd/m2
sRGB
6500k
(Gamma=2.2±0.2)
0.313±0.015
0.329±0.015
200 ± 20 cd/m2
Color mode
Color temperature
x Y
Reading
4700K
0.3575±0.015
0.3862±0.015
130 ± 10 cd/m2
3.1.7.7 Video performance
*All spec. of monitor need to warm up at least 1hr.
Color temperature specification:
Reading mode
- 11 -
Item
Condition
Spec
OK
N.A
Remark
Brightness adjustable
range
At default contrast level
(saturate point) & Fullwhite color pattern
(Max. backlight value –
Min. backlight value)
≧ 100 cd/㎡
Item
Condition
Spec
OK
N.A
Remark
Acoustical Noise
At 4 cm distance
& “Audio” function
disabled
≦ 28 dB/A
Item
Condition
Spec
OK
N.A
Remark
Temperature
Operating
0 ~ +40 ℃
Non-operating
-20 ~ +60 ℃
Humidity
Operating
10 ~ 90%
Non-condensing
Non-operating
10 ~ 60%
Non-condensing
Altitude
Operating
0~3048m (10,000ft)
Without packing
Non-operating
0~12,192m (40,000ft)
With packing
Item
Condition
Spec
OK
N.A
Remark
(1) Vibration
Package,
NonOperating
(1)
* Acceleration: 1.15G;
(1)The product should be
packaged and non-operating.
(2) The duration of endurance is 30
minutes per axis (X, Y and Z)
(3) Procedure:
Confirmed sample with
appearance and function ready
before testing then compare with
after test record as brightness,
uniformity and contrast ratio.
Perform random vibration after
sine-wave vibration test.
(2) Unpackaged Vibration
Unpackaged,
NonOperating
Test Spectrum:
20 Hz 0.0185(g2/Hz)
200Hz 0.0185(g2/Hz)
Duration : 5 Minutes
Axis : 3 axis ( Horizontal and
Vertical axis ,Z axis)
3.1.7.8 Brightness Adjustable Range
3.1.7.9 Acoustical Noise
3.1.7.10 Environment
3.1.7.11 Transportation
- 12 -
(3) Drop
Package,
NonOperating
76 cm Height (MP stage)
(1 corner, 3 edges, 6 faces)
Item
Condition
Spec
OK
N.A
Remark
Electrostatic Discharge
IEC801-2 standard
Contact: 8KV
Air: 15KV
Item
Condition
Spec
OK
N.A
Remark
TCO6.0
Electric
Band 1 < 10 V/m
Band 2 < 1 V/m
Magnetic
Band 1 < 200nT
Band 2 < 25nT
EMI
FCC part 15J class B
After Mass production
under 1dBuv for constant
measure. Besides DNSF
and VCCI class-2 are
optional.
EN55022 class B
Item
Condition
Spec
OK
N.A
Remark
MTBF Prediction
Refer to Telcordia
(Bellcore)
> 60,000 Hours
Excluding
backlight
Backlight Life time
At 25±2℃, under 7.5mA
30,000 Hours (min)
See Note-4
Item
Condition
Spec
OK
N.A
Remark
Preamp + Power amp
(1)Output power
1 Wrms/CH @ 1KHz
(2)THD (@ 1W)
<10%
(3)S/N ratio
>75 dB +/- 3 dB at 1.0 W/1m at 1
kHz.
Speaker Driver
(1)Nominal impedance
8 ohm
(2)Rated input power
1.5W/CH
(3)Frequency response
580 ± 20% Hz～20KHz - 15dB Max
3.1.7.12 Electrostatic Discharge Requirements
3.1.7.13 EMC
3.1.7.14 Reliability
Note-4: Backlight life time is defined as the time when brightness of backlight become 50% or less
than its original value at the condition of typical backlight operation current (for CCFL backlight, it’s
CCFL operation current; for LED backlight, it’s LED forward (/operation) current).
Audio performance
- 13 -
(4)Output sound pressure
level
80 ± 3 dB at 1.0W 0.5 M
Average at 800, 1000, 1200, 1500Hz
(5)Dimension of box
55 x 18 x 10 mm
Audio Control
(1)Volume range
0 ~100 levels
(2)Mute
On/Off
Item
Condition
Spec
OK
N.A
Remark
LCD Panel Supplier
AUO
Panel type of Supplier
M240HW01 VD
Screen Diagonal
24” Display area
Unit=mm
531.36(H)x298.89 (V)
Physical Size
Unit=mm
556.0(W) x323.2(H) x 11.5(D)
Weight
Unit=gram
2530+/-80
Technology
TN type
Pixel pitch
Unit=mm
0.27675(H) x 0.27675 (W)
Per one
triad
Pixel arrangement
R/G/B vertical stripe
Display mode
Normally White
Support color
16.7 Millions colors
6 bit+FRC
Item
Unit
Conditions
Min.
Typ.
Max.
Remark
Viewing Angle
[degree]
Horizontal
CR = 10
(Right/Left)
150
170
-
-
[degree]
Vertical
CR = 10
(Up/Down)
140
160
-
-
Contrast ratio
Normal Direction
600
1000
Response Time
[msec]
Rising Time
-
3.5
7.4
[msec]
Falling Time
-
1.5
2.6 [msec]
Rising + Falling
- 5 10
Color / Chromaticity
Coordinates (CIE)
Red x
0.620
0.650
0.680
Red y
0.303
0.333
0.363
Green x
0.302
0.332
0.362
Green y
0.593
0.623
0.653
Blue x
0.127
0.157
0.187
Blue y
0.023
0.053
0.083
Color Coordinates (CIE)
White
White x
0.283
0.313
0.343
White y
0.299
0.329
0.359
Luminance Uniformity
[%]
9 points
measurement
75
80
White Luminance @ CCFL
6.0mA (center)
[cd/m2]
200
250
-
Crosstalk (in 60Hz)
[%] 1.5
60Hz
LCD Characteristics
3.1.7.15 The Physical definition & Technology summary of LCD panel
AUO_ M240HW01-VD
3.1.7.16 Optical characteristics of LCD panel
* The test methods for the above items’ definition please refer to the relative panel specification.
- 14 -
Item
Condition
Spec
OK
N.A
Remark
Power button
Enter button
Up/Inc. button
Down/Dec. button
Menu button
Mode button
Input Select button
Custom key
iKey button
Custom key
Volume button
Custom key
Only for
GL2460HM
Item
Condition
Spec
OK
N.A
Remark
Auto Adjust
Auto-Geometry
Brightness
Contrast
Horizontal Position
Vertical Position
Pixel Clock
Phase
Color
Bluish
Reddish
Normal
sRGB
Senseye
User: Separate R/G/B
adjustment
Reset Color
OSD Position
OSD Horizontal position
OSD Vertical position
OSD Time
From 5 sec to 30 sec
OSD Lock
Language
17 languages
Recall
Recall All
Mode
Standard/sRGB /Movie/
Photo/Game/Eco/Readin
g/User
Input Select
Sharpness
Gamma
5 types
Color Format
RGB/YUV
HDMI RGB PC Range
RGB(0~255)
RGB(16~235)
Only for
GL2460HM
Display Information
For input timing
User Controls
3.1.7.17 User’s hardware control definition
3.1.7.18 OSD control function definition
- 15 -
Volume
0-100 . Mute
On/Off
Hot key for Picture mode
Hot key for Brightness
Hot key for Contrast
Hot key for Volume
Only for
GL2460HM
Hot key for Input Select
Hot key for Mode
Item
Condition
Spec
OK
N.A
Remark
Bezel opening
533.37*300.9
Monitor without Stand
W x H x D mm
565.36*333.39*53.7
Monitor with Stand
W x H x D mm
565.36*433.95*193.82
Carton Box (outside)
L x W x H mm
649*123*417(WW: C FLUTE)
651*125*421( JP: BE FLUTE)
Tilt and Swivel range
Tilt: -5°~20°
Swivel: NA
Item
Condition
Spec
OK
N.A
Remark
Monitor (Net)
4.23Kg
Monitor with packing
(Gross)
5.63Kg
Item
Condition
Spec
OK
N.A
Remark
Flammability
>ABS<,94-HB
Heat deflection To
ABS
65 ℃
UV stability
ABS
Delta E < 8.0
Resin
MPRII: ABS
Texture
BTN/RC: MT-11015
Lens: MT-11010
BZL/CLMN/Base: Polish
#8000
Color
DB59A
Item
Condition
Spec
OK
N.A
Remark
Color
Brown
Material
WW: C FLUTE
JP: BE FLUTE
Compression strength
200
Burst Strength
16
Mechanical Characteristics
3.1.7.19 Dimension
3.1.7.20 Weight
3.1.7.21 Plastic
3.1.7.22 Carton
- 16 -
Stacked quantity
WW 20’:800 / 40’:1680
JP 20’:726 / 40’:1566
EU 20’:600 / 40’:1260
Stowing Type
Container
Quantity of products
(sets)
(Every container)
Quantity of Products
(sets)
(Every Pallet)
Quantity of pallet
(sets)
(Every Container)
With pallet
20'
800(WW)
726(JP）
600(EU)
Pallet A:X
Pallet B: 80
Pallet A:106
Pallet B: 68
Pallet A:60
Pallet A: X
Pallet B: 10
Pallet A: 6
Pallet B: 3
Pallet A: 10
40'
1680(WW)
1566(JP)
1260(EU)
Pallet A:80
Pallet B: X
Pallet A:106
Pallet B: 68
Pallet A:60
Pallet A: 21
Pallet B: X
Pallet A: 9
Pallet B: 3
Pallet A:10
Without pallet
20'
X X X X X
40'
X X X
X X
Net Weight (Kg)
Gross Weight (Kg)
Dimension w/o Base
W*H*D (mm)
Dimension w/ Base
W*H*D (mm)
4.23Kg
5.63Kg
565.36*333.39*53.7
565.36*433.95*193.82
Carton Interior Dimension (mm)
L*W*H
Carton External Dimension (mm)
L*W*H
639*113*401
649*123*417(WW: C FLUTE)
651*125*421( JP: BE FLUTE)
Pallet & Shipment
3.1.7.23 Container Specification
3.1.7.24 Carton Specification
Product:
Package:
- 17 -
3.1.8 Certification
- 18 -
- 19 -
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