Acer V193W User manual

Acer V193W
Service Guide
(for NT68167)
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ServiceGuide AcerV193W
Service Guide Version and Revision
Version Release Date Revision History TPV model
A00 Apr-28-2010 Initial Release
T99SNFDYW7AFNCJ
T99ANFDYW7ZYNCJ
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ServiceGuide AcerV193W
Copyright
Copyright © 2003 by Acer Incorporated. 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 ofAcer Incorporated.
Disclaimer
The information in this guide is subject to change without notice. Acer Incorporated makes no representations
or warranties, either expressed or implied, with respect to the contents hereof and specifically disclaims any
warranties
of merchantability or fitness for any particular purpose.AnyAcer Incorporated software described in this manual
is
sold or licensed "as is". Should the programs prove defective following their purchase, the buyer (and not Acer
Incorporated, its distributor, or its dealer) assumes the entire cost of all necessary servicing, repair, and any
incidental or consequential damages resulting from any defect in the software.
Intel is a registered trademark of Intel Corporation.
Pentium and Pentium II/III are trademarks of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their respective holders.
Trademarks
Acer is a registered trademark of Acer Incorporated.
All other trademarks are property of their respective owners.
Conventions
The following conventions are used in this manual:
Screen messages Denotes actual messages that appear on screen.
Note Gives bits and pieces of additional information related to the current topic.
Warning Alerts you to any damage that might result from doing or not doing specific actions.
Caution Gives precautionary measures to avoid possible hardware or software problems.
Important Remind you to do specific actions relevant to the accomplishment of procedures.
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ServiceGuide AcerV193W
Preface
Before using this information and the product it supports, please read the following general information.
1. This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION
decided for Acer's "global" product offering. To better fit local market requirements and enhance product
competitiveness, your regional office may have decided to extend the functionality of a machine (e.g. add-on
card, modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered in this
generic service guide. In such cases, please contact your regional offices or the responsible
personnel/channel to provide you with further technical details.
2. Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information
available on your regional web or channel. If, for whatever reason, a part number change is made, it will not
be noted in the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office
may have a DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You
MUST use the list provided by your regional Acer office to order FRU parts for repair and service of customer
machines.
Warning: (For FCC Certified Models)
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy, and if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experienced radio/TV technician for help.
Notice:
1. The changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
2. Shielded interface cables and AC power cord, if any, must be used in order to comply with the emission limits.
3. The manufacturer is not responsible for any radio or TV interference caused by unauthorized modification to
this equipment. It is the responsibility of the user to correct such interference.
As ENERGY STARPartner our company has determined that this product meets the ENERGY STAR
guidelines for energy efficiency.
Warning:
To prevent fire or shock hazard, do not expose the monitor to rain or moisture. Dangerous high voltages are
present inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only.
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ServiceGuide AcerV193W
Precautions
Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool
or in a wet basement.
Do not place the monitor on an unstable trolley, stand, or table. If the monitor falls, it can injure a person and
cause serious damage to the appliance. Use only a trolley or stand recommended by the manufacturer or
sold with the monitor. If you mount the monitor on a wall or shelf, uses a mounting kit approved by the
manufacturer and follow the kit instructions.
Slots and openings in the back and bottom of the cabinet are provided for ventilation. To ensure reliable
operation of the monitor and to protect it from overheating, be sure these openings are not blocked or
covered. Do not place the monitor on a bed, sofa, rug, or similar surface. Do not place the monitor near or
over a radiator or heat register. Do not place the monitor in a bookcase or cabinet unless proper ventilation
is provided.
The monitor should be operated only from the type of power source indicated on the label. If you are not
sure of the type of power supplied to your home, consult your dealer or local power company.
The monitor is equipped with a three-pronged grounded plug, a plug with a third (grounding) pin. This plug
will fit only into a grounded power outlet as a safety feature. If your outlet does not accommodate the
three-wire plug, have an electrician install the correct outlet, or use an adapter to ground the appliance safely.
Do not defeat the safety purpose of the grounded plug.
Unplug the unit during a lightning storm or when it will not be used for long periods of time. This will protect
the monitor from damage due to power surges.
Do not overload power strips and extension cords. Overloading can result in fire or electric shock.
Never push any object into the slot on the monitor cabinet. It could short circuit parts causing a fire or electric
shock. Never spill liquids on the monitor.
Do not attempt to service the monitor yourself; opening or removing covers can expose you to dangerous
voltages and other hazards. Please refer all servicing to qualified service personnel
To ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate
configured receptacles marked between 100 - 240V AC, Min. 5A.
The wall socket shall be installed near the equipment and shall be easily accessible.
Special Notes On LCD Monitors
The following symptoms are normal with LCD monitor and do not indicate a problem.
Notes
Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the Power Switch
and then turn it on again to make sure the flicker disappears.
You may find slightly uneven brightness on the screen depending on the desktop pattern you use.
The LCD screen has effective pixels of 99.99% or more. It may include blemishes of 0.01% or less such as a
missing pixel or a pixel lit all of the time.
Due to the nature of the LCD screen, an afterimage of the previous screen may remain after switching the
image, when the same image is displayed for hours. In this case, the screen is recovered slowly by changing
the image or turning off the Power Switch for hours.
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ServiceGuide AcerV193W
Table Of Contents
Chapter 1 Monitor Features ………………………………………… 7
Introduction ……………………………………… 7
Monitor Block Diagram ……………………………………… 7
LCD Monitor General Specification ……………………………………… 8
Factory preset modes ……………………………………… 9
Connector Information ……………………………………… 9
Main Board Diagram ……………………………………… 10
Power Board Diagram ……………………………………… 10
Software Flow chart ……………………………………… 11
Chapter 2 LCD Panel Features ……………………………………… 12
General Features ……………………………………… 12
Electrical Characteristics ……………………………………… 12
BackLight Unit ……………………………………… 13
Panel Block Diagram ……………………………………… 13
Optical Characteristics ……………………………………… 14
LVDS pin assignment ……………………………………… 15
Chapter 3 Operating Instructions ……………………………………… 16
Installation ……………………………………… 16
Attaching/Removing the Base ……………………………………… 16
Front Button Controls ……………………………………… 17
eColor Management (OSD) ……………………………………… 18
How to Adjust a Setting ……………………………………… 19
OSD Message ……………………………………… 22
Factory Mode OSD ……………………………………… 23
Chapter 4 Machine Disassembly ……………………………………… 25
Disassembly Procedure ……………………………………… 25
Chapter 5 Troubleshooting ……………………………………… 29
Chapter 6 FRU (Field Replacement Unit) List ……………………………………… 34
Exploded Diagram ……………………………………… 34
Key components list ……………………………………… 35
Chapter 7 Schematic Diagram ……………………………………… 37
Chapter 8 PCB Layout ……………………………………… 45
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ServiceGuide AcerV193W
Monitor Features Chapter 1
Introduction
This specification defines the requirements for the 19” MICROPROCESSOR based Multi-mode supported high
resolution color LCD monitor. This monitor can be directly connected to general 15-pin D-sub VGAconnector,
also supports VESA DPMS power management and plug & play function.
The LCD monitor is designed with the latest LCD technology to provide a performance oriented product with no
radiation. This will alleviate the growing health concerns. It is also a space saving design, allowing more
desktop space, and comparing to the traditional CRT monitor, it consumes less power and gets less weight in
addition MTBF target is 50k hours or more.
Monitor Block Diagram
The LCD MONITOR will contain a main board, a power board, and key board which house the flat panel control
logic, brightness control logic and DDC.
The power board will provideAC to DC Inverter voltage to drive the backlight of panel and the main board chips
each voltage.
Monitor Function Block Diagram
DC-AC inverter
AC-DC(5V/12V)
Power Board
Main Board
Key board PC- VGA
/DDC
Backlight 2-CCFL
Panel
LVDS
Input signal
AC supply
90V-264V
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ServiceGuide AcerV193W
LCD Monitor General Specification
Model ACER B/V193W
Driving system TFT Color LCD
Active DisplayArea 408.24 (H) x 255.15 (V)
Pixel pitch 0.2835(H) x 0.2835(W)
Contrast Ratio 800 : 1
Response time 5ms
LCD Panel
Luminance of White 300(Typ.) cd/㎡
Video signal R, G, B Analog D-Sub 15pin interface，
Separate Sync. H/V TTL
H-Frequency 30kHz – 80kHz
V-Frequency 55-75Hz
Input
Dot Clock 140MHz(max)
Viewing angle (H)160 (V) 160(Type)
Display Colors 16.7M
Display mode 1440 x 900 @75Hz
ON Mode < 22.7W
EPA ENERGY STAR® Saving/OFF Mode < 1W
Power Source 90 V ~ 240 V，50 3Hz, 60 3Hz
Environmental
Considerations
Operating Temp: 0° to 40°C
Storage Temp: -30° to 65°C
Operating Humidity: 0% to 90%
Storage Humidity: 0% to 90%
Peak surge current < 55A peak at 240 VAC and cold starting
Power line surge No advance effects (no loss of information or defect) with a maximum of 1
half-wave missing per second
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ServiceGuide AcerV193W
Factory preset modes
Mode Resolution
640 x 480@60Hz
640 x 480@72Hz
VGA 640 x 480@75Hz
800 x 600@56Hz
800 x 600@60Hz
800 x 600@72Hz
SVGA
800 x 600@75Hz
1024 x 768@60Hz
1024 x 768@70Hz
XGA 1024 x 768@75Hz
1152 x 864@75Hz
1280 x 960@60HZ
1280 x 720@60HZ
1280 x 768@60HZ
VESA
1280 x 768@75HZ
1280 x 1024@60Hz
SXGA 1280 x 1024@75Hz
1360 x 768@60HZ
1440 x 900@60Hz
WXGA 1440 x 900@75Hz
Connector Information
Input Signal Connector---- D-Sub 15pin Connector
Pin No. Description Pin No. Description
1. Red Input 9. +5VDC
2. Green Input 10. GND
3. Blue Input 11. RS232/GND
4. RS232/GND 12. SDA- DDC-Serial Data
5. Connection detect 13. H Sync
6. Red GND 14. V Sync
7. Green GND 15. SCL- DDC-Serial Clock
8. Blue GND
VGA Connector layout 15
610
11 15
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ServiceGuide AcerV193W
MainBoard Block Diagram
PowerBoard Block Diagram
Fuse EMI Rectifier
BD901 Smoothing
Capacitor
C905
Transformer
T901
MOS
Q901
IC-PWM
IC901
14V
Rectifier
5V
Rectifier
14V
5V
Sense
resistor
Vcc
Rectifier
regulating
Sampling
PhotoCoupler
Vcc
Open Lamp Protection
14V DC
DIM control
DC-AC
Transformer
T801
High Voltage
Output
Resonance NET
Switching MOS
Q802-
A
M9948
AC input
100-240V
2- CCFL
PWM Control IC
IC801-TL494
Current Sampling
Power part
Inverter part
(X401)
Crystal12MHz
Key Board
Control
(CN401/406)
D-Sub
Connector
(CN101)
SPI
H sync
V sync
RGB
Voltage converter
（CN404）
5V
5V 3.3V 1.8V
Video input
DDC
Scalar IC NT68167 Novatak
(IncludeADC, OSD, MCU)
(U401)
FLASH ROM
EEPROM
M24C04-WMN6TP
(U403)NC
(U402)
SST25VF010A
LCD PANEL
(CN403/405)
LVDS
Main Board Block Diagram
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ServiceGuide AcerV193W
Software Flow Chart
Start
Initial_MCU
Check if DataBuffer Is blank
Check if Sum is chan
g
ed ? To Write default values
Read parameter_from Buffer
PowerHandler
Init_GlobalVariables
Initial_MCU Device
while
InputTiming
ModeHandler
MenuHandler
DebugHandler
if standby mode?
Brightness
Contrast
Language
InputType InputTimingStableCounter
OsdCounter
PowerDown
C
ounter
LED turn-on
Show power on logo
if factory mode?
No signal message
UnsupportModeFlag
END
OSD Menu
Software Flow Chart
N
InputTiming
Phaes/Frequency
Image setup
Color
O
Y
Y
Enter factory mode OSD
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ServiceGuide AcerV193W
LCD Panel Features Chapter 2
General Features
LTM190BT03 is a 19” wide TFT Liquid Crystal Display module with 2ch-LVDS interface. This module supports
1440 x 900 WXGA+ mode and can display 16.7M colors. High speed response(Typ 5ms).The inverter module
for Backlight is not built in. 2 CCFLs(Cold Cathode Fluorescent Lamp).
Electrical Characteristics
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ServiceGuide AcerV193W
BackLight Unit
Panel Block Diagram for 2 CCFL
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ServiceGuide AcerV193W
Optical Characteristics
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LVDS pin assignment
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ServiceGuide AcerV193W
OperatingInstructions Chapter3
Installation
To install the monitor on your host system, please follow the steps below:
1 Connect the video cable
A：Make sure both the monitor and computer are switched off.
B：Connect the VGA video cable to the computer.
2 Connect the power cord
Connect the power cord to the monitor, then to a properly grounded AC outlet.
3 Turn on the monitor and computer
Turn on the monitor first, then the computer. This sequence is very important.
4 If the monitor does not function properly, please refer to the troubleshooting section to diagnose the problem.
Attaching/Removing the Base
Attaching:
Align the release button on the bottom of the monitor with the corresponding slots on the bottom of the base.
Removing:
Press the release button as indicated, then pull in the direction of the arrow to remove the base.
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ServiceGuide AcerV193W
Front Button Controls
Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the
monitor. By changing these settings, the picture can be adjusted to your personal preferences.
The power cord should be connected.
Connect the video cable from the monitor to the video card.
Press the power button to turn on the monitor position. The power indicator will light up.
1 Power LED: Lights up to indicate the power is turned on.
2 Power Switch: Turn the power on or off.
3.4 < / > : Press < or > to navigate to the desired function, press Enter to select the function. Press < or > to
change the settings of the current function.
5 Menu/Enter: Activate the OSD menu when the OSD is off or activate deactivate the adjustment function when
the OSD is on.
6 Auto adjust button/Exit:
a. When the OSD menu is active, this button will act as the exit key exit OSD menu).
b. When the OSD menu is inactive, press this button for two seconds to activate the Auto Adjustment function.
The Auto Adjustment function s used to set the HPos, VPos, Clock and Focus.
7 Empowering Key/Exit:
a. When the OSD menu is active, this button will act as the exit key exit OSD menu).
b. When the OSD menu is inactive, press this button to select scenario mode.
NO Name Function
1 LED Power indicator
2 Power Switch Turn on / turn off.
3 > Right
4 < Left
5 Menu Menu/Enter
6 Auto Auto Adjustment /Exit
7 e Empowering Key/Exit
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ServiceGuide AcerV193W
eColor Management (OSD)
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ServiceGuide AcerV193W
How to Adjust a Setting
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ServiceGuide AcerV193W
Adjusting the picture
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