ViewSonic VX2739wm-1 User manual

ViewSonic VX2739wm-1
VX2739wm-CN
Model No. VS12843
27” Color TFT LCD Display
(VX2739wm-1_VX2739wm-CN_SM Rev. 1a May. 2010)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA- [phone]
Service Manual

Copyright
Copyright © 2010 by ViewSonic Corporation. All rights reserved. No part of this
publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or
translated into any language or computer language, in any form or by any means,
electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior
written permission of ViewSonic Corporation.
Disclaimer
ViewSonic makes no representations or warranties, either expressed or implied, with
respect to the contents hereof and specifically disclaims any warranty of merchantability or
fitness for any particular purpose. Further, ViewSonic reserves the right to revise this
publication and to make changes from time to time in the contents hereof without obligation
of ViewSonic to notify any person of such revision or changes.
Trademarks
Optiquest is a registered trademark of ViewSonic Corporation.
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.
Product disposal at end of product life
The lamp in this product contains mercury. Please dispose of in accordance with local, state
or federal laws.
Revision History
Revision SM Editing Date ECR Number Description of Changes Editor
1a 5/7/2010 Initial Release Eden Chang
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TABLE OF CONTENTS
1. Precautions and Safety Notices.......................................................................................4
2. Specification .....................................................................................................................8
3. Front Panel Function Control Description ...................................................................17
4. Circuit Description...........................................................................................................20
5. Adjusting Procedure .......................................................................................................22
6. Trouble Shooting Flow Chart..........................................................................................68
7. Block Diagrams ..............................................................................................................74
8. Schematic Diagrams ......................................................................................................75
9. PCB Layout Diagrams ...................................................................................................78
10. Exploded Diagram And Spare Parts List .....................................................................79
11. Recommended Spare Parts List .................................................................................80
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1. Precautions and Safety Notices
Safety Instructions
The symbol is intended to alert the user to presence of un-insulated
“Hazardous Voltage” within the product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock to persons.
This symbol is intended to alert the user that improper use of the product
may result in product malfunction. The user should pay attention to avoid
accidents or unnecessary problems.
Wet Location
Apparatus shall not be exposed to dripping or splashing and that no objects filled
with liquids, such as vases, shall be placed on the apparatus.
Outdoor Use
WARNING: To reduce the risk of fire or electric shock, do not expose this
apparatus to rain or moisture.
Disconnect Device - The Mains Plug or An Appliance Coupler
The mains plug or an appliance coupler is used as the disconnect device for
disconnection from the mains, the disconnect device shall remain readily
operable.
Safety
Operate the Monitor on 100V and 120 V AC only.
Use the AC power cord specified by ViewSonic and suitable for the voltage where
you use it.
The plug is designed, for safety purposes, to fit into the wall outlet only one way.
If you are unable to insert the plug fully into the outlet, contact your dealer.
If any liquid or solid object should fall inside the cabinet, stop operating, unplug the
Monitor immediately and have it checked by qualified service technician.
If you will not be using the Monitor for a long time, disconnect the power by pulling
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the plug itself. Do not pull on the cord.
Carrying The LCD Monitor
To prevent dropping the Monitor and causing serious injury, you must follow these
guidelines:
Disconnect all cables before carrying the Monitor.
Carrying the large size Monitor requires at least two or three people.
When you carry the Monitor, place your hands as illustrated and hold it securely.
Do not put stress on the LCD panel and the frame around the screen.
When carrying the Monitor, do not subject it to shocks, vibration, or excessive
force.
When lifting or moving the Monitor, hold it securely from the bottom. Place your
palm directly under the panel.
Installed on the wall
Installed with stand
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Leave at least this space around the set. Do not install the Monitor set as follows:
Air circulation is blocked.
Broken pieces
Do not throw anything at the LCD.
Doing so may break the screen glass and cause serious injury.
If the surface of the LCD cracks, unplug the AC power cord before touching the
LCD. Otherwise electric shock may result.
Handling of broken glass and liquid crystal leakage
If the LCD panel gets damaged, crystalline liquid leakage may occur, or scattered
broken glass may result.
Do not touch broken glass or crystalline liquid which is toxic, with bare hands as
cuts, poisoning or skin irritation may occur.
Also do not glass fragments or leaked crystalline liquid get into your eyes or mouth.
Should either contacted your eyes or mouth, rinse the contacted area thoroughly
with water and consult your doctor.
Note
This television includes a QAM demodulator, which should allow you to receive
unscrambled digital cable television programming via subscription service to a
cable service provider.
The type of programming and signal provided by your cable service provider will
affect the availability of digital cable television programming in your area.
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2. Product Specification
2.1 Product definition
Product Name ViewSonic VX2739WM
Model Number VS12843
OSD Languages
English
French
German
Spanish
Italian
Finnish
Russian
Japanese
Korean
Traditional Chinese
Simplified Chinese
TFT LCD Panel and Model # 1st source : CMO M270H1-L01
Scalar TSUMO88GDI-LF-1
Input Signal D-Sub /DVI/HDMI
Sync Compatibility Separate Sync / Composite Sync / SOG
Adapter Internal Power Board
Power Cable (Refer to APPENDIX B) Yes
15 pin mini D-SUB Analog Cable (1.8 m,
black), with PC 2001.
(Detached cable; refer the Appendix A)
Yes
DVI-D Cable(1.8m, black) with PC 2001
(refer to Appendix A) Yes
Audio Cable(1.8m, black) with PC 2001 Yes
MIC Cable(1.8m, black) with PC 2001 No
USB Cable (V2.0)
(1.8m, black) with PC 2001 Yes
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2.2 Specification
Dimensions (with
stand)
Physical(W)x(H)x(D)
647 mm (W) x 490 mm (H) x 250 mm (D)
Weight 6.8 kg
LCD 27" Color active matrix TFT LCD
Pane CMO M270H1-L01
Contrast Ratio 1200 :1 (Typ.)
Display area 597.89 mm (H) x 336.31 mm (V)
Pixel Pitch 0.3114 mm (H) x 0.3114 mm (V) pixel
Native Resolution 1920 x 1080
Speaker Output 2W x 2
2.3 Front View and Rear View
N
o. Name Photo Materials Piece Texture Color Scheme
1 Front ABS 1
POLISH #
8000 Viewsonic black
2 Back ABS 1
Mold-Tech
MT-11020
(Logo is
POLISH #
8000)
Viewsonic black
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3 Power
button ring
ABS 1 electroplate silver
4 Neck ABS 1
POLISH #
8000 Viewsonic black
5 Key button ABS 1
Mold-Tech
MT-11010 Viewsonic black
6 base ABS 1
POLISH #
8000 Viewsonic black
7 base_ring ABS 1 electroplate silver
8 Power
button
Transluce
nt
PC
1 POLISH #
8000
1. Black by
painting at
core-side
surface.
2.Power icon by
Lacer-engravin
g and then
painting
pantone # 427C
3. Blue LED.
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** ViewSonic Black_matt
L* a* b*
27.47 -0.06 -0.8
*CIE1976; Polish level = 1200; Follow the Equipment in ViewSonic Lab
*1. The reference for the cabinet components is the color chip provided by ViewSonic.
*2. The color difference between any two panel head cabinet components shall be ∆E <0.8, in the 1976
CIE L*a*b Colorspace.
*3. The color difference between any two base cabinet components shall be ∆E <0.8, in the 1976 CIE
L*a*b Colorspace.
2.4 Audio Interface (Speaker Specification)
Line input signal 1.0 Vrms @1kHz
Line input impedance 10 Kohm
Maximum Amp power output (Watt) 2.4 W @ SPKVDD=5V 4OHM
Amp -THD < 10 % THD @1kHz
Speaker Power rating(Ω/Watt) 4Ω/ 2 W
Signal to Noise Ratio 50 db
Frequency response Fo – 20kHz
SPL. 91 dB (at 0.1w/0.1m)
FO 820 Hz
Line input connection
1. 3.5 mm stereo jack
2. HDMI
Vibration
There should be no audible vibration
resonance at volume=100% & any
Freq.
Screen image There should be no affect on the screen
image stability under any conditions
Connector PC99 requirement Audio in Lime Green pantone # 577C
Cable type / length 3.5mm stereo cable / 1.8m length
Audio DPMS Speakers stay off when the rest of the
monitor is in power saving
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