BenQ G700 User manual

BenQG700 ServiceManual
1
Product Service Manual – Level 2
Service Manual for BenQ:
G700
P/N: 9J.0BV72.ISx/IBx
Applicable forAll Regions
Version: 001
Date:07/06/12
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 (June, 2006)
© Copyright BenQ Corporation 2006. All Right Reserved.

BenQG700 ServiceManual
2
Content Index
1. Precautions & Safety Notices.....................................................................................................................4
1.1 .Safety Precaution…………………………………………………………………………………………………4
1.2 Produce Safety Notice…………………………………………………………………………………………… 4
1.3 Service Notes………………………………………………………………………………………………………4
2. Product Overview………………………………………………………………………………………………… 4
2.1. Power supply………………………………………………………………………………………………………4
2.2 Signal interface……………………………………………………………………………………………………. 5
2.3 Video performance………………………………………………………………………………………………….5
2.4 Scan range…………………………………………………………………………………………………………..6
2.5 Plug & Play DDC2B DDC-CI Support…………………………………………………………………………… 6
2.6 Support Timings……………………………………………………………………………………………………. 7
2.7 Operational &Function Specification…………………………………………………………………………….. 8
2.7.1 Video performance…………………………………………………………………………………………….... 8
2.7.2 Brightness Adjustable Range…………………………………………………………………………………… 9
2.7.3 Acoustical Noise………………………………………………………………………………………………….. 9
2.7.4 Environment………………………………………………………………………………………………………. 9
2.7.5 Transportation…………………………………………………………………………………………………….. 9
2.7.6 Electrostatic Discharge Requirements………………………………………………………………………… 10
2.7.7 Reliability…………………………………………………………………………………………………………. 10
2.7.8 Audio performance………………………………………………………………………………………………. 10
2.8 LCD Characteristics……………………………………………………………………………………………….. 10
2.8.1 The Physical definition & Technology summary of LCD panel……………………………………………… 10
2.9 User Controls………………………………………………………………………………………………………. 11
2.10 Mechanical Characteristics……………………………………………………………………………………… 11
2.10.1 Dimension………………………………………………………………………………………………………. 11
2.10.2 Weight…………………………………………………………………………………………………………… 11
2.10.3 Plastic…………………………………………………………………………………………………………… 11
2.10.4 Carton…………………………………………………………………………………………………………… 12
2.11 Pallet & Shipment………………………………………………………………………………………………… 12
2.11.1 Container Specification………………………………………………………………………………………… 12
2.11.2 Carton Specification Product: /Package…………………………………………………………………….. 13
3. Disassembly & Assembly……………………………………………………………………………………….. 14
3.1 Exploded Diagram…………………………………………………………………………………………………. 14
3.2 Assembly Block…………………………………………………………………………………………………….. 15
3.3 Disassembly Block………………………………………………………………………………………………… 18
4. Level 1 Cosmetic / Appearance / Alignment Service………………………………………………………… 20

BenQG700 ServiceManual
3
Content Index
4.1 Software / Firmware Upgrade Process…………………………………………………………………………..20
4.2. Alignment procedure (for function adjustment)……………………………………………………………….. 21
4.2.1 Preparation………………………………………………………………………………………………………. 21
4.2.2 Timing adjustment………………………………………………………………………………………………. 21
4.2.3 Function key Definitions………………………………………………………………………………………… 21
4.2.3.1 Control buttons on the Back bezel……………………………………………………………………………21
4.2.3.2 OSD Control…………………………………………………………………………………………………… 22
4.2.3.3 Factory Mode Introduction…………………………………………………………………………………… 23
4.2.3.4. After repair, to ensure the quality you should do the following test and adjustment…………………. 23
5. Level 2 Circuit Board and Standard Parts Replacement………………………………………………….. 25
5.1. Block diagram…………………………………………………………………………………………………….. 25
5.2 Circuit operation theory………………………………………………………………………………………….. 28
5.2.1. Electronic Circuit Theory……………………………………………………………………………………….. 28
5.2.2 Power board diagram…………………………………………………………………………………………… 30
5.3 Inverter board diagram……………………………………………………………………………………………. 31
5.3.1 I/F Circuit …………………………………………………………………………………………………………. 31
5.3.2 Trouble Shooting Guide………………………………………………………………………………………… 33
5.4 Spare Parts List……………………………………………………………………………………………………. 40

BenQG700 ServiceManual
4
1. Precautions & Safety Notices
1.1 Safety Precaution
This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However,
improper used or installation may cause damage to the monitor as well as to the user.
WARNINGS:
zThis monitor should be operated only at the correct power sources indicated on the label on the rear of the
monitor. If you’re unsure of the power supply in you residence, consult your local dealer or Power
Company.
zDo not try to repair the monitor by yourself, as it contains no user-serviceable parts. This monitor should
only be repaired by a qualified technician.
zDo not remove the monitor cabinet. There is high-voltage parts inside that may cause electric shock to
human bodies.
zStop using the monitor if the cabinet is damaged. Have it checked by a service technician.
zPut your monitor only in a lean, cool, dry environment. If it gets wet, unplug the power cable immediately
and consult your closed dealer.
zAlways unplug the monitor before cleaning it. Clean the cabinet with a clean, dry cloth. Apply
non-ammonia based cleaner onto the cloth, not directly onto the class screen.
zDo not place heavy objects on the monitor or power cord.
1.2 PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety visual inspections and the
protection afforded by them cannot necessarily be obtained by using replacement components rated for
higher voltage, wattage, etc. Before replacing any of these components read the parts list in this manual
carefully. The use of substitute replacement parts, which do not have the same safety characteristics as
specified in the parts list, may create shock, fire, or other hazards.
1.3 SERVICE NOTES
zWhen replacing parts or circuit boards, clamp the lead wires around terminals before soldering.
zKeep wires away from high voltage, high temperature components and sharp edges.
zKeep wires in their original position so as to reduce interference.
zAdjustment of this product please refers to the user’ manual.
2. Product Overview
2.1 Power supply
Item condition Spec OK NA Remark
Input Voltage range Universal input full
range
100~240V
AC
√
Input Current range 100Vac
240Vac
1.5A
(max.)
0.6A
(max.)
√
Power consumption normal “on” operation ≤38W √LED: Green
DMPS <2W
√LED: Orange
In rush Current 100Vac,cold
star,25°C;
40A (max)
√

BenQG700 ServiceManual
5
240Vac,cold
star,25°C
60A(max)
Earth Leakage Current
Hi-pot
Power Line Transient
CCFL Operation range
Power cord
√To be determined by the
business country.
2.2 Signal interface
Pin Symbol Pin Symbol Pin Symbol
1 Red+ 6 Red_GND 11 GND
2 Green+ 7 Green_GND 12 DDC_DAT
3 Blue+ 8 Blue_GND 13 Hsync
4 NC 9 5V_VGA 14 Vsync
5 Cable
Detect
10 GND 15 DDC_CLK
2.3 Video Performance
Item condition Spec OK NA Remark
Max. support Pixel rate 135.000MHz √
Max. Resolution 1280×1024 √
Rise time+Fall time <25% of
minimum pixel
clock period
√Refer to VESA
VSIS Standard
V1R2
Setting Time after
overshoot/undershoot
<5% final
full-scale value
√Refer to VESA
VSIS Standard
V1R2
Overshot/undershoot <12% of step
function voltage
level over the full
voltage range
√Refer to VESA
VSIS Standard
V1R2

BenQG700 ServiceManual
6
2.4 Scan range
Item condition Spec OK NA Remark
Horizontal Sync polarity: (+) or (-) 31.0~83KHz
√
Vertical Sync polarity: (+) or (-) 56~76Hz
√
2.5 Plug & Play DDC2B DDC-CI Support
Item condition Spec OK NA Remark
DDC channel type DDC2B √
EDID Version 1.3
√
2.6 Support Timing

BenQG700 ServiceManual
7
Preset Pixel Format Horz Freq(kHz) Horz Polarity Vert Freq (Hz) Vert Polarity Pixel Clk (MHz)
1 640x350 31.47 - 70.09 - 25.18
2640x400 31.47 - 70.09 - 25.18
3640x480 35.00 - 66.67 - 30.24
4640x480 31.47 - 59.94 + 25.17
5640x480 37.86 + 72.81 + 31.50
6640x480 37.50 + 75.00 + 31.50
7720x400 31.47 + 70.08 + 28.32
8832x624 49.71 ± 74.53 ± 57.27
9800x600 35.16 - 56.25 - 36.00
10 800x600 37.88 - 60.32 - 40.00
11 800x600 48.08 - 72.19 + 50.00
12 800x600 46.88 - 75.00 - 49.50
13 848x480 31.02 + 60.00 + 33.75
14848x480 29.83 - 59.66 + 31.50
15 848x480 35.00 - 70.00 + 37.52
16848x480 36.07 ± 72.00 ± 39.25
17848x480 37.68 ± 74.77 ± 41.00
18720x576 35.83 + 60.00 - 32.71
19 1024x768 48.36 + 60.00 - 65.00
20 1024x768 56.48 ± 70.07 ± 75.00
21 1024x768 57.67 + 72.00 + 78.43
22 1024x768 60.24 + 74.93 + 80.00
23 1024x768 60.02 + 75.03 + 78.75
24 1152x720 44.86 60 66.75
25 1152x864 63.85 70.01 94..50
26 1152x864 67.50 75.00 108.00
27 1152x870 68.68 75.06 100.00
28 1152x900 61.80 65.95 92.94
29 1152x900 71.73 76.07 105.59
30 1280x720 45.00 59.94 74.25
31 1280x720 44.77 59.86 74.50
32 1280x720 56.46 74.78 95.75
33 1280x768-R 47.40 60.00 68.25
34 1280x768 47.78 59.87 79.50

BenQG700 ServiceManual
8
Preset Pixel Format Horz Freq(kHz) Horz Polarity Vert Freq (Hz) Vert Polarity Pixel Clk (MHz)
35 1280x768 60.29 74.89 102.25
36 1280x800 61.648 59.81 83.50
37 1280x800 62.8 75 106.5
38 1280x960 60.00 60.00 108.00
39 1280x1024 63.98 60.02 108.00
40 1280x1024 74.88 69.85 126.99
41 1280x1024 74.40 70.00 124.90
42 1280x1024 77.90 72.00 134.60
43 1280x1024 79.98 75.02 135.00
44 1280x1024 81.18 76.16 135.09
2.7 Operational &Function Specification
2.7.1 Video Performance
* All Spec. of monitor need to warm up at lease 1hr
Item condition Spec OK NA Remark
Resolution Any input resolution
modes which are
list in the timing
table (under
1280x1024).
Max. resolution
1280x1024
√
Contrast ratio 700:1 √
Brightness 300 cd/m2 (Typ.) √
Response time 5ms(typ.) √
CR>10 160 √Viewing angle
CR>10 160 √
CIE coordinate of white x--0.313 ±
0.015;
y--0.329 ±
0.015
√
Display colors 16.7M
(6bit+Hi-FRC)
√

BenQG700 ServiceManual
9
2.7.2 Brightness Adjustable Range
Item condition Spec OK NA Remark
Brightness adjustable range At default
contrast level
(saturate
point)&
Full-white color
pattern
≧100 cd/m2
(Setting
brightness max.
value 100%; Min.
brightness value)
√
2.7.3 Acoustical Noise
Item condition Spec OK NA Remark
Acoustical Noise At 1 meter
distance&
audio function
disable
≦40dB/A √
2.7.4 Environment
2.7.5 Transportation
Item condition Spec OK NA Remark
Vibration Package, Non-operating 1. Sweep frequency :5~200Hz
2. Amplitude: 1.47 Grms 3. Duration Time:
20 minute each axis，total is 60 Min :4.
Direction: 3 mutually perpendicular axes (x, y,
z) 5. Fix direction : Only fix top&buttom
√
Unpackage
vibration
Unpackage , Non-operating √
Drop Package, Non-operating 1. Test Height: 106 cm. 2. Test Freqence:
1C-3E-6F
√
shock Wooden package , Non-operating
√
Item condition Spec OK NA Remark
Operating 0°C to 40°C √Temperature
Non-operating -20°C to 60°C √
Operating 20% to 80% √Humidity
Non-operating 10% to 80% √
Operating 0 to 3048 M (10000 ft) √Altitude
Non-operating 0 to 12192M (40000 ft) √

BenQG700 ServiceManual
10
2.7.6 Electrostatic discharge Requirements
Item condition Spec OK NA Remark
Electrostatic discharge IEC61000-4-2(EN
55024)
Contact
discharge : 4KV
√
2.7.7 Reliability
Note. Display an all WHITE field at mid Brightness and Contrast settings
2.7.8 Audio performance
Items Specification
Speaker N
A
Input impedance N
A
Frequency response range N
A
Signal to noise ratio N
A
Output power NA
2.8. LCD Characteristics
2.8.1 The physical definition &technology summary of LCD panel
Item condition Spec OK NA Remark
LCD panel supplier InnoLux & CPT √
Panel type of supplier MT170EN01 V.9 & CLAA170
EA07P-V1
√
Screen diagonal 17 inch diagonal √
Display area 304.1x228mm √
Pixel pitch 0.264 √
Pixel arrangement RGB vertical stripe √
Display mode Normally White √
Support color 16.7M (6bit+Hi-FRC) √
Items Condition Spec Note
MTBF ≧ 50,000 Hours Excluding the
LCD, CCFL
CCFL Life time Luminance becomes 50% ≧40,000 Hours(min)

BenQG700 ServiceManual
11
2.9 User Controls
User’s hardware control definition:
Item condition Spec OK NA Remark
Monitor power button √
Enter button √
Right/Inc.button √
Left/Dec. button √
I-key button √
Mode selection button √
Input Select key √
Mute button
√
Input source select button √
2.10 Mechanical characteristics
2.10.1Dimension
Item condition Spec OK NA Remark
Bezel opening Lx W 272.1X339.7mm √
Monitor without stand L×W×Hmm 370x365.9x60.83mm √
Monitor with stand L×W×Hmm 370x380.91x93.7mm √
Carton Box(outside) L×W×Hmm 440x434x120mm √
Tilt and Swivel range Tilt:-5~21degree
Swivel: 0 degree
√
2.10.2 Weight
Item condition Spec OK NA
Monitor (Net) 3.7±0.3 Kg ( Net ) √
Monitor with packing(Gross) 4.7±0.3Kg( Gross / with
packing ) √
2.10.3 Plastic
Item condition Spec OK NA Remark
Flammability 94-HB √
Heat deflection to ABS 80°C √
UV stability ABS Delta E<12 √
resin ABS √

BenQG700 ServiceManual
12
Texture MT11000&MT11010&MT11
020& & polishing2000&
polishing3000&
polishing6000
Special Texture
√1.BEZEL: MT11000 &
MT11010&
polishing2000
2.BACK COVER:
MT11000 &
MT11020&
polishing2000
3.STAND: MT11010&
polishing2000
4.POWER KEY
BUTTON:
polishing2000
5.LED: polishing6000
Others:MT11020
Color BCS-7015A(BLACK)/BCS-
T8110C(SILVER)
√
Bezel painting
2.10.4 Carton
Carton:Item condition Spec OK NA Remark
Color Kraft
√
Material C Flute
√
Compression strength 440 KGF
√
Burst strrngth 15 KGF/cm2
√
Stacked quantity 7 Layers
√
2.11. Pallet &Shipment
2.11.1 Container Specification
Stowing Type Containter Quantity of
Produces (sets)
(Every container)
Quantity of
Produces (sets)
(Every Pallet)
Quantity of Pallet
(sets)
(Every container)
20’ 1140 Pallet A:106
Pallet B:76
Pallet C:24
Pallet A:6
Pallet B:6
Pallet C:2
40’ 2414 Pallet A:106
Pallet B:76
Pallet C:24
Pallet A:13
Pallet B:13
Pallet C:2
With Pallet
20’ N/A N/A N/A

BenQG700 ServiceManual
13
40’ N/A N/A N/A
Without Pallet
2.11.2 Carton Specification
Product:
Net Weight (Kg) Gross Weight(Kg) Dimension w/o Base
LxWxH (mm)
Dimension w/ Base
LxWxH (mm)
3.7±0.3 Kg ( Net) 4.7±0.3Kg 370x365.9x93.7mm 370x371.35x137.91mm
Package:
Carton Interior Dimension (mm)
LxWxH
Carton External Dimension (mm)
LxWxH
429x416x110mm 440x434x120mm

BenQG700 ServiceManual
14
3. Disassembly & Assembly
3.1 Exploded Diagram

BenQG700 ServiceManual
15
3.2 Assembly Block
ASSY CHASSIS *1
CHASSIS *1
PCBA I/F BOARD *1
SCREW,P,CROSS W/WAS,M3*6,Zn
ROHS *1
ASSY STAND *1
ASSY BEZEL *1
SCREW,P,CROSS
PANEL *1
HRN LVDS FFC *1
FOIL,AI,DOUBLE,COND,60x35xT0.07mm,LE2
016*1
ASSY,BACK COVER *1
SCREW,P,CROSS,M4*8,BLACK,
NL
(
NYLOK）*2
LE 1785
LCD Monitor
BEZEL *1
FUNCTION BUTTON *1
POWER BUTTON *1
LENS *1
PCBA KEY PAD*1
KEY PAD CABLE *1
ASSY BASE *1
BASE *1
RUBBER *5
PCBA Power *1
SCREW, P, CROSS
STAND FRONT *1
STAND BACK *1
HINGE *1
SCREW,B,CROSS,T.T-4*10,BLK ,R
OHS *2
BACK COVER *!
LOGO BACK *1

BenQG700 ServiceManual
16
1
Assemble
the panel
with
front-bezel
2
Assemble
chassis &
Plug in the
LVDS
3 Keypad
assembly
4 Plug in the
lamp lines
5 Back cover
assembly

BenQG700 ServiceManual
17
6 Assemble the
stand
7 Lock screw
10 Base
assembly
l

BenQG700 ServiceManual
18
3.3 Disassembly Block
Note:
The disassembly direction please following direction of arrowhead
ASSY FRONT BEZEL
SCREW,P,CROSS W/WAS,M3*6,Zn
ROHS*1
ASSY STAND
STAND FRONT *1
STAND BACK *1
HINGE *1
SCREW,B,CROSS,T.T-4*10,BLK ,ROHS
*2
LE 1785
LCD Monito
r
PANEL *1
HRN LVDS FFC *1
FOIL,AI,DOUBLE,COND,60x35xT0.07
mm,LE2016*1
ASSY CHASSIS *1
CHASSIS *1
BEZEL *1
FUNCTION BUTTON *1
POWER BUTTON *1
ASSY BASE
BASE, LE1785*1
Rubber Foot , *5
HRN ASS'Y *1
PCBA I/F BOARD *1
PCBA Power *1
INSULATOR,MYLAR*4
SCREW,P,CROSS W/WAS,M3*6,Zn
ROHS*5
BOLT,#4-40x11.8,Ni ROHS *4
BACK COVER *!
LOGO BACK *1
PCBA KEY PAD*1
KEY PAD CABLE *1
ASSY,BACK COVER *1
SCREW,P,CROSS,M4*8,BLACK,N
L(NYLOK）*2

BenQG700 ServiceManual
19
1
Disassemble
the base(press
two points as
photo showing)
2
Disassemble
the stand(take
out screw)
3 Move out the
stand
4 Disassemble
back cover
5 Move out
LVDS

BenQG700 ServiceManual
20
6
Take out
screw and
disassemble
keypad
7 Disassemble
the LVDS
8
Take apart
the chassis
aside
4 Level 1 Cosmetic / Appearance / Alignment Service
4.1 Software / Firmware Upgrade Process
Upload firmware to MCU via VGA Cable
1. Connect ISP board between monitor and PC as below configuration.
2. Press the “connect” button in ISP.exe, and select the device type, which is used in this monitor. Choose the
Insert to Parallel
Port on PC
ISP Board
LCD Monitor
D-Sub
Parallel
Port
D-SUB