381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
Page 2
Copyright
Copyright
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.
2004 by ViewSonic Corporation. All rights reserved. No part of this publication may be
¤
Revision History
Revision DateDescription Of ChangesApproval
1a 02/11/04 Initial Release DCN-4207 Angela Lu
1b 04
/05/04 Add VE510b/s-2 DCN-4280 Angela Lu
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TABLE OF CONTENTS
1. Precautions and Safety Notices
2. Specification
3. Front Panel Function Control Description
4. Circuit Description
5. Adjusting Procedure
6. Trouble Shooting Flow Chart
7. Recommended Spare Parts List
8. Exploded Diagram And Spare Parts List
9. Block Diagram
10. Schematic Diagrams
11. PCB Layout Diagrams
1
2
5
10
12
13
15
28
36
37
44
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1. Precautions and Safety Notices
1.1 SAFETY PRECAUTIONS
This monitor is manufactured and tested on a ground principle that a user's safety comes first. However, improper
use or installation may cause damage to the monitor as well as to the user. Carefully go over the following
WARNINGS before installing and keep this guide handy.
WARNINGS
.
This monitor should be operated only at the correct power sources indicated on the label on the rear end of the monitor.
If you're unsure of the power supply in your residence, consult your local dealer or power company.
.
Do not try to repair the monitor your self as it contains no user-serviceable parts. This monitor should only be
repaired by a qualified technician.
.
Do not remove the monitor cabinet. There are high-voltage parts inside that may cause electric shock to human
bodies, even when the power cord is unplugged.
.
Stop using the monitor if the cabinet is damaged. Have it checked by a service technician.
.
Put your monitor only in a clean, dry environment. If it gets wet, unplug the power cable immediately and
consult your service technician.
.
Always unplug the monitor before cleaning it. Clean the cabinet with a soft, dry cloth. Apply non-ammonia
based cleaner onto the cloth, not directly onto the glass screen.
.
Keep the monitor away from magnetic objects, motors, TV sets, and transformer.
.
Do 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 voltages,
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
.
When replacing parts or circuit boards, clamp the lead wires around terminals before soldering.
.
When replacing a high wattage resistor (more than 1W of metal oxide film resistor) in circuit board, keep the
resistor about 5mm away from circuit board.
.
Keep wires away from high voltage, high temperature components and sharp edges.
.
Keep wires in their original position so as to reduce interference.
.
For usage of this product please also refer to the user's manual.
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2. Specification
2.1 PRODUCT SPECIFICATION
LCD Panel 15.0" TFT
Power Management Energy Star compliant VESA
DPMS compatible
< 1W
TIMING 1024×768@72Hz 1024×768@75Hz
Pixel Rate 77.066MHz 78.750MHz
H TOTAL 17.232us 16.660us
H DISPLAY
H B-Porch 1.869us 2.235us
13.287us 13.003us
H Width 1.765us 1.219us
H Border 0.000us 0.000us
V TOTAL 13.889ms 13.328ms
V DISPLAY
13.234ms 12.795ms
V B-Porch 0.500ms 0.466ms
Vs Width 0.103ms 0.050ms
V Border 0.000ms 0.000ms
H/V Sync -/- +/+
Interlace No. No.
2.3 D-SUB CONNECTOR
D-SUB 15 PIN CONNECTOR
12 3 4 5
6 7 89 10
11 12 13 14 15
SIGNAL LEVEL
CONNECTOR
R RED 0.7vp-p(VIDEO)
G GREEN 0.7vp-p(VIDEO)
B BLUE 0.7vp-p(VIDEO)
H H/SYNC TTL positive or negative
V V/SYNC TTL positive or negative
SDA DDC1/2B TTL
SCL DDC1/2B TTL
1024×768@60Hz
1.Red Video 6.Red GND 11.NC
2.Green Video 7.Green GND 12.SDA
3.Blue Video 8.Blue GND 13.H-sync
4.NC 9. +5V for DDC 14.V-sync
5.GND 10.GND 15.SCL
SIGNAL DESCRIPTION
1024×768@70Hz
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3. Front Panel Function Control Description
Main Menu
with OnView controls
Displays, saves
changes to, and exits
the Main Menu.
Selects a highlighted control. Also,
displays the control screen for the
selected control and toggles
between control pairs.
Front Control Panel
Power light
Scroll through menu
options and adjust the
displayed control.
Power On/Off
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Do the following to adjust the screen image:
.
To display the Main Menu, press button [1].
Main Menu
AUTO
SET
?
1:EXIT 2:SELECT
Auto Adjust
Contrast/Brightness
Color Adjust
Information
i
Image Adjust
Setup Menu
Memory Recall
NOTE: All OnView menus and adjustment screens disappear automatically
after about 15 seconds. This time period is adjustable through the Setup
menu and the OSD timeout control described on page 11.
.
To highlight a control you want to adjust, press I or J to scroll up or down
the Main Menu.
.
To select the highlighted control, press button [2]. A control screen appears
like the example shown below.
Contrast
1:EXIT 2: Brightness
.
To adjust the control, press the up I or down J buttons.
.
To save the adjustments and exit the menu, press button [1] twice.
The line at the
bottom of the
screen tells you
what you can do
next: Exit or Select
the control that is
highlighted.
The following tips may help you optimize your display:
Adjust your computer's graphic card so that it outputs a video signal 1024 x
•
768 @ 60 Hz to the LCD display. (Look for instructions on“changing the
refresh rate” in your graphic card's user guide.)
•If necessary, make small adjustments using H. POSITION and V. POSITION
until the screen image is completely visible
edge of the screen should barely touch the illuminated “active area” of the
LCD display.)
ViewSonic Corporation Confidential
. (The black border around the
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Main Menu Controls
Adjust the menu items shown below by using the up Iand down Jbuttons.
Contro Explanation
Auto Adjust
automatically sizes, centers, and fine tunes the
videosignal to eliminate waviness and distortion.
Press the [2] button to obtain a sharper image.
NOTE
: Auto Adjust works with most common video cards. If
this function does not work on your LCD display, then lower the
video refresh rate to 60 Hz and set the resolution to its pre-set
value.
Contrast
adjusts the difference between the image background
(black level) and the foreground (white level).
Brightness
Color Adjust
adjusts background black level of the screen image.
provides several color options: preset color
temperatures and User which allows you to adjust red (R), green
(G), and blue (B). The factory setting for this product is 6500K
(6500 Kelvin).
sRGB
— sRGB is quickly becoming the industry standard for
color management, with support being included in many of the
latest applications. Enabling this setting allows the LCD display
to more accurately display colors the way they were originally
intended. Enabling the sRGB setting will cause the Contrast and
Brightness adjustments to be disabled.
9300K
— Adds blue to the screen image for cooler white (used
in most office settings with fluorescent lighting).
6500K
— Adds red to the screen image for warmer white and
richer red.
5400K
User Color
and blue (B)
1
2
Important
— Adds green to the screen image for a darker color.
— Individual adjustments for red (R), green (G),
.
To select color (R, G or B) press button [2].
To adjust selected color, press ▲ or ▼.
: If you select RECALL from the Main Menu when
the product is set to a Preset Timing Mode, colors return to the
6500K factory preset.
Information
i
coming from the graphics card in your computer. See your
graphic card’s user guide for instructions on changing the
resolution and refresh rate (vertical frequency).
displays the timing mode (video signal input)
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VESA 1024 x 768 @ 60 Hz (recommended) means that the
resolution is 1024 x 768 and the refresh rate is 60 Hertz.
Information
H. Frequency: 48.60 KHz
V. Frequency: 60.00 Hz
Pixel Clock: 65.00 MHz
Resolution: 1024 x 768
Model Number: VLCDS23585-2W
Serial No:
www.viewsonic.com
1:EXIT
Image Adjust
Image Adjust
H./V. Position
H. Size
Fine Tune
Sharpness
1:EXIT 2:SELECT
The Image Adjust controls are explained below:
?
H./V. Position
adjusts horizontal and vertical position of the
screen image. You can toggle between Horizontal and Vertical
by pressing button [2]. Horizontal moves the screen image to
the left or to the right. Vertical moves the screen image up and
down.
H. Size
NOTE:
Fine Tunesharpens focus by aligning the illuminated text and/
(Horizontal Size) adjusts the width of the screen image.
Vertical size is automatic with your LCD display.
or graphic characters.
NOTE:TrytheAuto Adjustbefore using the Fine
Tune control.
Sharpness
Setup Menu displays the menu shown below.
OSD
adjusts the clarity and focus of the screen image.
Setup Menu
Language Select
Resolution Notifier
OSD Position
OSD Timeout
1:EXIT 2:SELECT
The Setup Menu controls are explained below.
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L
anguage
Selectallowsyoutochoosethelanguageusedin
the menus and control screens.
OSD
Short Cut Key
Function Key : 5 Keys !!!! 1 2 ▼
Resolution Notice
Resolution Notice
For best picture quality
change the resolution to
1024 x 768
1:EXIT 2:DISABLE
OSD Position
advises the optimal resolution to use.
allows you to move the on-screen display menus
and control screens.
OSD Timeout
sets the length of time an on-screen display
screen is displayed. For example, with a “15 second” setting, if
a control is not pushed within 15 seconds, the display screen
disappears.
Memory Recall
returns adjustments to the original factory
settings if the display is operating in a factory Preset Timing
Mode listed in this user guide.
▲▲▲▲
▼▼▼
[1] Main Menu
[2] Auto Image Adjust
[▼▼▼▼] or [▲▲▲▲]
to immediately activate Contrast menu.
It should be change to Brightness OSD
by push button [2].
[▼▼▼▼] + [▲▲▲▲]
recall Contrast or Brightness while in
the Contrast or Brightness adjustment,
or recall both of Contrast and
Brightness when the OSD is not open.
[1] + [2] toggle 720x400 and 640x400 mode when
input 720x400 or 640x400 mode.
[1] + [▼▼▼▼] + [▲▲▲▲]
(Keep pushing 5 sec)
[1] + [▼▼▼▼]
[1] + [▲▲▲▲]
White Balance.
Power Lock
OSD Lock
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4. Circuit Description
4-1 DC-DC CONVERTER
The power supply with integrated green-mode PWM controller provides several features to enhance the
performance of power fly back converters.
I801 is a PWM controller and provides many protection functions.
I802 is a photo couple to transfer the feedback signal from the secondary side, where I803 detects the output DC
voltage of 3.3V and 12V.
D813 detects the working voltage on I801. Q805 is used to pull down the voltage on I801 pin5 and shut down I801
in case the feedback loop fails.
R826 is a dynamic load for the inverter, while backlight is turned off, but the system is still working. This keeps
the 12V output voltage under 13V,
no longer loaded. This is detected by I804 and Q803, to activate the R826.
4-2 Scaling controller
The ADC converts the RGB analog signal to a digital signal that the scaling chip can acknowledge.
The HSYNC input receives a logic signal and provides the frequency reference for pixel clock generation.
The scaling IC converts the input signal ranging from VGA to XGA into XGA resolution that the panel can
acknowledge.
GENERAL DESCRIPTION
The MST8016A is a high performance, and fully integrated graphics processing IC solution for LCD monitors with
resolutions up to XGA. It is configured with an integrated triple-ADC/PLL, a high quality scaling engine, an
on-screen display controller, a built-in output clock generator, a panel timing controller (TCON), and RSDS display
interface. To further reduce system costs, the MST8116A also integrates intelligent power management control
capability for green-mode requirements and spread-spectrum support for EMI management.
4-3 MTV312M64
The MTV312M micro-controller is an 8051 CPU core embedded device especially tailored for CRT/LCD
Monitor applications. It includes an 8051 CPU core, 1024-byte SRAM, 14 built-in PWM DACs, VESA DDC
interface, 4-channel A/D converter, and a 64K-byte internal program Flash-ROM.
A “CMOS output pin” means it can sink and drive at least 4mA current. It is not recommended to use such
pin as input function.
A “open drain pin” means it can sink at least 4mA current but only drive 10~20uA to VDD. It can be used as input
or output function and needs an external pull up resistor.
A “8051 standard pin” is a pseudo open drain pin. It can sink at least 4mA current when output is at low level, and
drive at least 4mA current for 160nS when output transits from low to high, then keeps driving at 100uA to
maintain the pin at high level. It can be used as input or output function. It needs an external pull up resistor when
driving heavy load device.
POWER CONFIGURATION
The MTV312M can work on 5V or 3.3V power supply system.
In 5V power system, the VDD pin is connected to 5V power and the VDD3 needs an external capacitor, all
output pins can swing from 0~5V, input pins can accept 0~5V input range.
The ADC conversion range is 5V. However, X1 and X2 pins must be kept below 3.3V.
In 3.3V power system, the VDD and VDD3 are connected to 3.3V power, all output pins swing from 0~3.3V,
HSYNC, VSYNC and open drain pin can accept 0~5V input range, other pins must be kept below 3.3V. The
ADC conversion range is 3.3V.
to protect the panel. After
system enters the power saving mode, R826 is
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4-4 INVERTER
In order to drive the CCFLs embedded in the panel module, there is a push-pull inverter to convert 12Vdc
up to hundreds of volts AC .
The inverter is formed by symmetric outputs in order to drive the separate lamp modules.
The input stage consists of a PWM controller, push-pull inverter, and switching MOSFET to convert the DC input into
AC output.
The output stage consists of a tuning capacitor, transformer, and push-pull MOSFET pair to boost the AC output up to
the required level. One resistor is used in series with the lamp for output voltage feedback.
There are two signals from the system to turn on the inverter and control brightness.
A Logic “low” level to I901 is used to turn on the inverter.
The signal BRI controls brightness by a DC level from, the PWM signal.
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5. Adjusting Procedure
5.1 ADJUSTMENT CONDITIONS AND PRECAUTIONS
.
Approximately 30 minutes should be allowed for warm up before proceeding.
.
Adjustments should be undertaken only on those necessary elements since most of them have been carefully
preset at the factory.
.
ESD protection is needed before adjustment.
5.2 MAIN ADJUSTMENTS
NO. FUNCTION DESIGNATION
.
V-com Voltage On the back of the Panel
.
eprom Initial Function Key
.
White Balance Function Key
5.3 ALIGNMENT PROCEDURES
Adjustment Conditions and Precautions:
(A). Power supply voltage:
AC 110/120V±10% 60 Hz±5%, AC 220/240V± 10% 50 Hz ±5%.
(B). Warm up time:
The display must be power ON for at least 30 minutes at full white pattern before starting alignments.
This is especially critical in color temperature and white balance adjustments.
(C). Signals: reference the front detail specifications and timing table.
Video : reference the front detail specifications.
.
Adjustment of V-com Voltage:
A. Timing : 1024x768@60Hz. 48KHz
B. Pattern : The picture of “ Shut down windows” or Full screen pixel ON/OFF pattern.
C. Adjust V-com to let the center of the screen no flash.
.
Eeprom Initial:
A. Timing : 1024x768@60Hz.
B. Pattern : Cross hatch.
C. Switch off the power and press the “ ” and “ 2 “ key simultaneously, then switch on the power. At
this time we can enter into the factory mode when press the “ 1 “key.
D. Select the “EEPROM INIT” item and press “ 2 “key to reset the Eeprom.
.
White Balance Adjustment :
A. Timing : 1024x768@60Hz.
B. Pattern : 16Gray Level. or 5-MOSAIC (Pattern 42)
C. Set CA210 color analizer at the center of screen and along a perpendicular to the screen at 0cm from
the display.
D. Move “ ” key to select the “ WHITE BALANCE” item in the factory mode and press “ 2 “key, then
E. Color temperature verification: (Set Brightness and Contrast to Maximum)
6500K verify : press “ ” ,“ ” key to move cursor to 6500K at factory mode
and press “ 2 “ key, and then check the color temperature is
x=0.312 ±0.03
y=0.318 ±0.03
Y≧200 cd/m
▼
the white balance will be auto adjusted.
▲
▲
▼
2
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6. Trouble Shooting Flow Chart
6.1 NO POWER or BACKLIGHT
Check main board
backlight_on signal
Check Q903,D905
Check R926,F901
broken or not
Check Q905.
Check I901,I902,
R905,R905
No
No
Check I901 pin1 voltage
No
NO POWER
Yes
3.3V on P801
pin5,6 to GND
12V on P802
pin3 to GND
YesYes
NO BACKLIGHT.
Check P802 pin2 with
3.3V or not
Yes
Check 5V on I901 pin6
Yes
>0.55volts,<3.70volts
while inverter turn on
With power
but power saving mode more
than 1 Watts
No
CHECK C805
with voltage more than
150volts or not
Check R813~R815 broken or
Check Q802,D813 failed or not
Check I802,I803
not
Yes
No
Yes
No
No
with main board more than
1Watts
check main board.
CHECK
D801~D804 failed or not,
F801 broken or not,
R802 broken or not
Check Q801 D & S short or
not,I801 failed,
R807 broken or not
Check Q903,I804
without connecting main board,
Yes
Check
Q901,Q902,D903,D904
No
Check D809,D811.
Check D810,If power board
with audio amplifier
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6.2 NO DISPLAY
No
Display
Check Power
region
Refer to NO POWER
trouble shoot flow char
Check LED Color
Green
Press Power key
ON/OFF is OK ?
(See LED is green or
dark.)
Yes
Press "1" key if OSD
menu is on display ?
Yes
Check I105
MST8016 if HWRST
Pin#32 have
reset pulse ?
Yes
AmberDark
Amber & Green
No
No
No
Check IO cable is
Check X301 Crystal
12MHz is working?
Check uP I106
Check Keypad
Inverter is Ok ?
Check uP I106
pin#17 send reset
Yes
connect OK ?
Yes
Reset is Ok ?
pcb is OK ?
Yes
Check if
pulse ?
No
Yes
Yes
Check I/P signal is in
pwr saving state?
Check I106 is OK ?
Check Reset circuit
No
No
Change
I106
C173,D125
Change
Inverter
Check X101 Crystal
12MHz is working ?
Yes
Check I105
Pin#70,71 data bus
have signal
Yes
Check panel Powers
VLCD_3V3
VLCD_12V
correct
Yes
Change LCD panel
No
No
Change X101
Change I001 LCD
controller IC
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VA521 RSPL
Rev 1a
POWER CORD (GERMAN WALL 1.83M BLACK SCP )
7. Recommended Spare Parts List
VA521 Recommended spare Parts List
ItemViewSonic P/NRef. P/NDescriptionLocationQ'ty
1P-BX-0601-09462011121001CARTON BOX 6P011
2P-FM-0602-08552012176900POLYFOAM 6P201
3P-FM-0602-08562012177000POLYFOAM 6P211
4M-MS-0808-00272013150901PE bag6P601
5M-MS-0808-13162013222536POLYETHY BAG 250mmx350mmxt0.3 ADD>PE-LD<
6C-BC-0302-05832022262202CABI BACK ABS 94HB PANTONE BLACK C=4001
7PL-PS-0715-09862028258002STAND 5B011
8M-SCW-0824-02852084730082SCREW,BND T+ 2C22 9S017
74#N/A2251343216 RES,CHIP 1/8RC 0805 1/8 W 4.32Kohm F T
75#N/A2251349916 RES,CHIP 1/8RC 0805 1/8W 4.99Kohm F T
76#N/A2251382526 RES,CHIP 1/8RC 0805 1/8W 82.5Kohm F T
77#N/A2251400096 RES,CHIP 1/4RC 1/4W 0.00 F
78#N/A2251426126 RES,CHIP 1/4RC 1206 1/4 W 26.1Kohm F T
79#N/A2251439086 RES,CHIP 1/4RC 1206 1/4 W 3.9 ohm F T
80 E-R-0405-66002253200096 RES,CHIP 1/10WRC 0603 1/10W 0 ohm J T
81 E-R-0405-64092253210196 RES,CHIP 1/10WRC 0603 1/10W 100 ohm J T
82 E-R-0405-64102253210296 RES,CHIP 1/10WRC 0603 1/10W 1Kohm J T
83 E-R-0405-64112253210396 RES,CHIP 1/10WRC 0603 1/10W 10Kohm J T
84 E-R-0405-66012253210596 RES,CHIP 1/10WRC 0603 1/10W 1Mohm J T
85#N/A2253218296 RES,CHIP 1/10WRC 0603 1/10W 1.8Kohm J T
86 E-R-0405-70002253222196 RES,CHIP 1/10WRC 0603 1/10W 220 ohm J T
87 E-R-0405-66042253222296 RES,CHIP 1/10WRC 0603 1/10W 2.2Kohm J T
88#N/A2253222396 RES,CHIP 1/10WRC 0603 1/10W 22Kohm J T
89 E-R-0405-66052253227296 RES,CHIP 1/10WRC 0603 1/10W 2.7Kohm J T
90 E-R-0405-70012253233096 RES,CHIP 1/10WRC 0603 1/10W 33 ohm J T
91 E-R-0405-64162253233296 RES,CHIP 1/10WRC 0603 1/10W 3.3Kohm J T
92 E-R-0405-64192253247296 RES,CHIP 1/10WRC 0603 1/10W 4.7Kohm J T
93 E-R-0405-59882253300096 RES,CHIP 1/8RC 0805 1/8 W 0ohm J T
94 E-R-0405-59892253310096 RES,CHIP 1/8RC 0805 1/8 W 10ohm J T
95#N/A2253310196 RES,CHIP 1/8RC 0805 1/8 W 100ohm J T
96 E-R-0405-59902253310296 RES,CHIP 1/8RC 0805 1/8 W 1Kohm J T
97 E-R-0405-59912253310396 RES,CHIP 1/8RC 0805 1/8 W 10Kohm J T
98 E-R-0405-59912253310396 RES,CHIP 1/8RC 0805 1/8 W 10Kohm J T
99#N/A2253310596 RES,CHIP 1/8RC 0805 1/8 W 1Mohm J T
100 E-R-0405-59972253322296 RES,CHIP 1/8RC 0805 1/8 W 2.2Kohm J T
101#N/A2253351596 RES,CHIP 1/8RC 0805 1/8W 5.1Mohm J T
102#N/A2253410096 RES,CHIP 1/4RC 1206 1/4 W 10ohm J T
103#N/A2253410196 RES,CHIP 1/4RC 1206 1/4 W 100ohm J T
104#N/A2253412396 RES,CHIP 1/4RC 1206 1/4 W 12Kohm J T
105#N/A2253422096 RES,CHIP 1/4RC 1206 1/4 W 22 ohm J T
106#N/A2253427196 RES,CHIP 1/4RC 1206 1/4 W 270 ohm J T
107#N/A2253427296 RES,CHIP 1/4RC 1206 1/4 W 2.7Kohm J T
108#N/A2253447096 RES,CHIP 1/4RC 1206 1/4 W 47ohm J T
109#N/A2253456496 RES,CHIP 1/4RC 1206 1/4 W 560Kohm J T
110#N/A2253456496 RES,CHIP 1/4RC 1206 1/4 W 560Kohm J T
111#N/A2259210308 RES,CHIP NETWORKS8P4R 1/16W 10Kohm J P=0.8
112 E-R-0405-60062259233008 RES,CHIP NETWORKS8P4R 1/16W 33ohm J P=0.8
113#N/A2275420001 CAP CERTC 20P/3KV SL P=7.5 J C
114#N/A2275450901 CAP,CERTC 5P/3KV SL P=7.5 J C
115 E-C-0404-22722283110291 CAP,CERCK45B 1000.000PF 500V K T
116#N/A2284110291 CAP,CERCK45B 1000.000PF 125'C K T
117#N/A2287133212 CAP,CERY1 CAP 3300P/250V K T
118#N/A2287147212 CAP,CERCK45E 4700.000PF 250VA M KC
119#N/A2297427212 CAP,PPPPPN 2700P/250V P=10.0 K K
120 E-C-0404-48342300922401 CAP MTL MINIX2 0.22u/275V P=15.0 M C
121#N/A2301310391 CAP,MTLCF93M 0.010UF 63V J T
122 E-C-0404-38902333347701 CAP,ELE 105'CEC 470u/ 16V 10*12.5 P=5.0 C
123 E-C-0404-24142333447791 CAP,ELE 105'CEC 470u/ 25V10*13 P=5.0 T
124#N/A2333547691 CAP,ELE 105'CEC 47u/ 35V 6.3*11 P=5.0 T
125 E-C-0404-18382333610691 CAP,ELE 105'CEC 10u/ 50V 5*11 P=5.0 T
126#N/A2335310841 CAP,ELE LOW ESR 105'CEC 1000u/ 16V 10*16 P=5.0 C
127#N/A2336310713 CAP,MINI ELE 105'CEC 100u/ 16V 6.3*7 P=2.5 T
128#N/A2336322613 CAP,MINI ELE 105'CEC 22u/ 16V 4*7 P=2.5 T
129#N/A2336347613 CAP,MINI ELE 105'CEC 47u/ 16V 5*7 P=2.5 T
130#N/A2336610613 CAP,MINI ELE 105'CEC 10u/ 50V 5*7 P=2.5 T
131#N/A2336622513 CAP,MINI ELE 105'CEC 2.2u/ 50V 4*7 P=2.5 T
132#N/A2341110296 CAP,CHIP 125'CCS 0603/COG/50V 1000p J T
133 E-C-0404-44232341122096 CAP,CHIP 125'CCS 0603/COG/50V 22p J T
134 E-C-0404-42242341147096 CAP,CHIP 125'CCS 0603/COG/50V 47p J T
135#N/A2342127096 CAP,CHIP 125'CCS 0805/COG/50V 27p J T
136#N/A2342133196 CAP,CHIP 125'CCS 0805/COG/50V 330p J T
137#N/A2344110396 CAP,CHIP 125'CCS 1206/COG/50V 0.01u J T
138#N/A2344133296 CAP,CHIP 125'CCS 1206/COG/50V 3300P J T
139#N/A2346147396 CAP,CHIP 125'CCS 0603/X7R/50V 0.047u K T
140#N/A2346247396 CAP,CHIP 125'CCS 0603/X7R/25V 0.047u K T
141 E-C-0404-38152346410496 CAP,CHIP 85'CCS 0603/Y5V/50V 0.1u Z T
142#N/A2347110396 CAP,CHIP 125'CCS 0805/X7R/50V 0.01u K T
143#N/A2347110496 CAP,CHIP 125'CCS 0805/X7R/50V 0.1u K T
144#N/A2347115396 CAP,CHIP 125'CCS 0805/X7R/50V 0.015u K T
145#N/A2347122296 CAP,CHIP 125'CCS 0805/X7R/50V 2200P K T
146#N/A2347133296 CAP,CHIP 125'CCS 0805/X7R/50V 3300p K T
SPRING PLATESPTE T=0.4MM (GROUND PLATE)
SPRING PLATEVA521 PB-CU T=0.2MM
HINGE
HINGEVA521 -5'~+20' (T.L)
PC BOARDT166W18 P/B CEM1 160*100 V2.01
PC BOARDVA521 KEY/B FR1 115*31
PCB MULTILAYERVA521 M/B FR4*2 100*82
LCD PANELCLAA150XG08V CPT
FUSEFUSE 2.5A/250V 21502.5 LITTEL
FUSEFUSE 2.5A/250V SG501302.5 PICO
THERMISTOR,PTHSCK-103 10+-20% 3A THINKING
RES,CBN 1/4RD 1/4W 1.2Kohm P=10.0 J T
RES,CBN 1/4RD 1/4W 910Kohm P=7.5 J TR804 R805
RES,CBN 1/2RD 1/2W 56Kohm J T52
RES,CBN 1/4 SRD 1/4WS 10.00 J T52 MINI
RES,CBN 1/4 SRD 1/4WS 4.70 J T52 MINIR901 R902
RES,MTL 3RS 3WS 47ohm J P=20.0
HIGH VOLTAGE RESISTORRD 1/2W 3.00M J
RES,CHIP 1/10RC 0603 1/10W 390 ohm F T
RES,CHIP 1/10RC 0603 1/10W 75 ohm F TR113 R116 R120
RES,CHIP 1/8RC 0805 1/8 W 100 ohm F T
RES,CHIP 1/8RC 0805 1/8 W 100Kohm F T
RES,CHIP 1/8RC 0805 1/8 W 18Kohm F T
RES,CHIP 1/8RC 0805 1/8 W 20Kohm F T
RES,CHIP 1/8RC 0805 1/8 W 2.2Kohm F T
RES,CHIP 1/8RC 0805 1/8 W 2.74Kohm F T
RES,CHIP 1/8RC 0805 1/8W 402 ohm F T
RES,CHIP 1/8RC 0805 1/8W 412 ohm F T
RES,CHIP 1/8RC 0805 1/8 W 4.32Kohm F T
RES,CHIP 1/8RC 0805 1/8W 4.99Kohm F T
RES,CHIP 1/8RC 0805 1/8W 82.5Kohm F T
RES,CHIP 1/8RC 0805 1/8 W 90.9Kohm F T
RES,CHIP 1/4RC 1/4W 0.00 FF901 R925
RES,CHIP 1/4RC 1206 1/4 W 26.1Kohm F T
2364200896DIODE,RECT(SMD)BAS32L SOD80C PHILIPSD102 RA D103 RA D104 RA D105 RA D1069
2364503996DIODE,ZENER SMDBZV55-C5V6 PHILIPSD109 D110 D111 D1124
2364600196DIODE,SWITCH SMDLL4148 3.5X1.5f TEMIC GS08D102 RB D103 RB D104 RB D105 RB D1069
RES,CHIP 1/10WRC 0603 1/10W 220 ohm J T
RES,CHIP 1/10WRC 0603 1/10W 22Kohm J T
RES,CHIP 1/10WRC 0603 1/10W 2.7Kohm J T
RES,CHIP 1/10WRC 0603 1/10W 33 ohm J T
RES,CHIP 1/8RC 0805 1/8 W 100ohm J T
RES,CHIP 1/8RC 0805 1/8 W 1Kohm J T
RES,CHIP 1/8RC 0805 1/8 W 2.2Kohm J T
RES,CHIP 1/8RC 0805 1/8 W 5.1Mohm J T
RES,CHIP 1/4RC 1206 1/4 W 100ohm J T
RES,CHIP 1/4RC 1206 1/4 W 12Kohm J T
RES,CHIP 1/4RC 1206 1/4 W 270 ohm J T
RES,CHIP 1/4RC 1206 1/4 W 47ohm J T
RES,CHIP 1/2RC 1210 1/3 W 1Kohm J T
RES,CHIP NETWORKS8P4R 1/16W 33ohm J P=0.8
CAP,CERTC 5P/3KV SL P=7.5 J C
CAP,CERCK45B 1000.000PF 500V K T
CAP,CERCK45E 4700.000PF 250VA M KC
CAP,PPPPPN 2700P/250V P=10.0 K K
CAP,ELE 105'CEC 10u/ 50V 5*11 P=5.0 T
CAP,MINI ELE 105'CEC 100u/ 16V 6.3*7 P=2.5 T
CAP,MINI ELE 105'CEC 2.2u/ 50V 4*7 P=2.5 T
CAP,CHIP 125'CCS 0805/COG/50V 27p J T
CAP,CHIP 125'CCS 0805/COG/50V 330p J T
CAP,CHIP 125'CCS 1206/COG/50V 0.01u J T
CAP,CHIP 125'CCS 0805/X7R/50V 0.015u K T
CAP,CHIP 125'CCS 0805/X7R/50V 2200P K T
CAP,CHIP 125'CCS 0805/X7R/50V 3300p K T
CAP,CHIP 85'CCS 0805/Y5V/50V 1.0u Z T
CAP,CHIP 85'CCS 0805/Y5V/50V 0.027u Z T
CAP,CHIP 85'CCS 0805/Y5V/16V 4.7u Z T
This section provides disassembly procedures for VA521, VE510b/s-2 LCD Monitor. Before you begin any of these
procedures, be sure to turn off the power, computer system, and other attached devices; then disconnect the
power cable from the electrical outlet. Moreover, when you disassemble the monitor, be sure to put the screws
in a safe place and separate them according to grouping.
.
Disassembly of Front Cover
Hinge Cover
1. Unscrew two screws of Rear Cover.
2. Remove two Hinge Cover.
"
!
Front Cover
Hinge Cover
"
X2
2084740104
#
3. Remove Front Cover from Monitor.
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VE510b/s-2
Page 35
.
Disassembly of Rear Cover, Keypad Board and LCD Panel
1. Unscrew two screws that secure Keypad Board.
$
#
!
X2
2084730062
X1
2082630062
%
X1
2082630062
"
2. Detach Rear Cover and LCD Panel module from the monitor.
3. Unscrew one screw that secure M/B Shielding Plate.
4. Unscrew one screw that secure Inverter down Shielding Plate.
5. Remove Inverter top Shielding Plate.
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VE510b/s-2
Page 36
&
6. Disconnect three connectors to remove Inverter connector and LCD Panel FPC cable.
A
'
7. Unscrew four screws that secure Metal Fitting and remove LCD Panel from Metal Fitting.
A
A
X4
2080002200
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VE510b/s-2
Page 37
.
Disassembly of Main Board, Keypad Board and Power Board
!
X4
1. Unscrew four screws that secure Main Board and disconnect the wires which are connected to
Main Board and remove Main Board.
2080003700
2. Unscrew four screws that secure Power Board to remove Power Board.
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34
"
2080003700
-
Do Not Copy VA521
X4
VE510b/s-2
Page 38
.
Disassembly of Stand unit from Rear Cover
!
2084730082
1. Unscrew six screws that secure Stand unit and detach Stand unit from the monitor.