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.
Revision History
Revision SM Editing Date ECR Number Description of Changes Editor
1a 09/08/2006 Initial Release Jamie Chang
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TABLE OF CONTENTS
1. Precautions and Safety Notices 1
2. Specification 4
3. Front Panel Function Control Description 13
4. Circuit Description 16
5. Adjustment Procedure 23
6. Troubleshooting Flow Chart 47
7. Recommended Spare Parts List 55
8. Exploded Diagram and Exploded Parts List 60
9. Block Diagram 65
10. Schematic Diagrams 66
11. PCB Layout Diagrams 72
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1. Precautions and Safety Notices
1. Please carefully read this manual before operating the device and keep it available for future reference.
2. To avoid the danger of the monitor falling and thereby possibly causing injury and/or serious damage to the
monitor itself, do not place it on unstable cars or desks. Be careful to avoid placing any stress on the LCD screen
during handling.
3. Do not place this monitor in areas that are wet or where water or other liquids may come in contact with it, such as
bathrooms, kitchens, wet floors, near washing machines or by swimming pools.
4. Remove the power plug from the electrical socket before cleaning. No water-containing cleaning agent should be
used to clean the screen, but only cleaning agents formulated specifically for cleaning LCD screens. Do not put any
liquid cleaning agent directly on the screen, but put it on a soft cloth first and then gently apply the cloth to the
screen.
5. In order to guarantee reliable operation and adequate heat dissipation, do not cover or block vent holes on the
monitor. Do not put the monitor close to heat sources. Do not place the monitor on furniture such as a bookshelf,
unless sufficient ventilation is available.
6. A 3-pin grounding plug is provided for this monitor. In order to guarantee normal operation and safety of this unit,
this plug should be used with a matching grounded power socket.
7. Please follow all warnings and instructions that accompany the monitor.
8. Please pay special attention to power supply overloads, as electrical shock or fire may occur.
9. Do not place anything on the power cord. Do not hang the power cord over an area where people or objects may
pass.
10. In case the monitor is not be used for an extended period, turn off power to avoid the possibility of short circuits
caused by lightning.
11. In order to avoid electrical shock or fire risks, do not insert any object through any openings in the monitor’s
enclosure. Do not allow any liquid to come in contact with the monitor.
12. In case of any abnormal noise or odor caused by incorrect operation, turn off power immediately and contact a
professional technician. Do not attempt to repair this monitor by yourself, as electrical shock may occur when
opening the back cover or accessing internal components.
13. If any of the following conditions occurs, turn off power and contact a repair service provider:
1) the power cord is damaged or worn;
2) liquid has gotten into the monitor, or the monitor has experienced immersion or wetting;
3) the monitor has fallen;
4) the monitor’s performance shows obvious changes;
5) the monitor fails to work normally when correct procedures are followed. In that case, please make any
adjustments in accordance with instructions supplied with the monitor; do not attempt any changes to
established procedures, as further damage may occur, making successful repair of the monitor more difficult.
14. In case parts need to be replaced, you must use identical parts or those supplied by our certified manufacturers. Any
other parts used without our authorization may result in electrical shock or fire risk.
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Handing and Placing methods
Correct methods Incorrect methods
Only touch the metal frame of the LCD panel or the
front cover of the monitor, DO not touch the surface
of the POL
Surface of the LCD panel is pressed by fingers and that
may cause”mura”
Take out the monitor with cushions Taking out the monitor by grasping the LCD panel, that
May cause”mura”
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Place the monitor on a clean and soft foam pad Placing the monitor on a foreign objects, that could
scratch The surface of the "Panel" or cause "mura"
The panel is placed facedown the lap,that may cause
"mura"
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*1 These functions can be recalled to default by [▼]+ [▲]
2
These functions are not available under Native Resolution Mode
*
3
*
These functions setting can be recalled to default by [▼]+[▲] under audio mode
[Remark] Please refer to the detail in the Appendix C
To immediately activate Contrast menu. It should be
change to Brightness OSD by push button [2]
Toggle 720x400 and 640x400 mode when input 720x400
or 640x400 mode
White Balance (Not shown on user’s guide)
Green – On / Orange – Active Off
Dark = Soft Power Switch OFF
[ ] Power
[ 1 ] BUTTON 1
[ 2 ] Button 2
[▲] UP ARROW BUTTON
[▼] DOWN ARROW BUTTON
Note: Power Button, Button 1 and Button 2 must be
one-shot logic operation. (i.e. there should be no
cycling)
Fine Tune, Sharpness*2
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Function descriptions
OSD Lock short cuts function for the buttons
The OSD lock will be activated by pressing the front panel control buttons "(1), & (▲)"
for 10 seconds. If the user then tries to access the OSD by pressing any of the buttons
"1", "▼", "▲", "2" a message will appear on the screen for 3 seconds showing "OSD
Locked". The OSD lock will be deactivated by pressing the front panel control buttons
"(1), & (▲)" again for 10 seconds.
Note1: When the OSD is locked will lock all functions, including “Volume” and “Mute”
Note 2: Status bar indicating OSD Lock or Unlock is in progress and when complete it
will indicate “OSD Locked”
Note 3: OSD Lock should not lock Power Button and Power Lock function
Power Lock short cuts function for the buttons
The power button lock will be activated by pressing the front panel control buttons "(1),
& (▼)" for 10 seconds. Locking the power button means that the user won't be able to
turn off the LCD while the power button is locked. If the user presses the power button
while it is locked, a message will appear on the screen for 3 seconds showing "Power
Button Locked". It also means that with the power button locked, the LCD would
automatically turn back "On" when power is restored after a power failure. If the power
button is not in the locked mode, then power should return to it's previous state when
power is restored after a power failure. The power button lock will be deactivated by
pressing the front panel control buttons "(1), & (▼)" again for 10 seconds
Note 1: Status bar indicating Power Button lock or unlock is in progress and when
complete it will indicate “Power Button Locked”
Note 2: Power should only be lockable in the “On State”
Memory Recall Actions
Memory Recall action on the analog and digital mode as below
1. Set the factory defaults as shown in Section 4-7
2. Clean all the mode setting buffer
3. Execute Auto Image Adjust
Note: Memory Recall should have no effect for Language, Power Lock, User Color Settings
Resolution Notice Actions
1. Resolution Notice OSD should show on screen after changing to non-native mode
for 30 sec
2. The OSD should disappear after 10 sec or by pushing button [1] or [2]
Resolution Notice function should be disabled when push button [2] under Resolution
Notice OSD
0-Touch™ Function Actions
1. Execute Auto Image Adjust when new mode detected, and save the settings to buffer
for further use
2. It should be reset by Memory Recall function
(Should not reset by power off, power unplug and others)
OSD Auto Save
The OSD shall save new settings when it is turned off by the user or when it times out.
There shall not be a separate save
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Factory Defaults
Item Defaults Item Defaults
Contrast 70% Volume
Brightness 100% Balance N/A
Color Temperature 6500K Treble N/A
Sharpness 0% Bass N/A
OSD H. Position 50% 720x400/640x400 720x400
OSD V. Position 50%
OSD Time Out 15 Sec
OSD Background Enabled
Resolution Notice Enabled
640x480@60Hz
720x480@60Hz
In SOG and Composite,
720x480@60Hz
640x480@60Hz
In SOG and Composite,
1152x864@75Hz
1152x870@75Hz
In SOG and Composite,
1280x768@60/75/85Hz
50%
(For VA903m-3 only)
640x480@60Hz
N/A
N/A
N/A
1024x768@60/75/85Hz
AUDIO INTERFACE (SPEAKER SPECIFICATION) (For VA903m-3 only)
Line input connection 3.5 mm stereo jack
Line input signal 1.0Vrms
Line input impedance >10 kOhm
Maximum power output (Electric) 1 W @ <15% distortion
Signal to Noise Ratio 50 dB
Frequency response 200 Hz – 20 Khz
Distortion <15% THD (@1kHz)
Vibration
Screen image
Connector PC99 requirement Audio
There should be no audible vibration with volume
at 100%. (Input signal within 1.0 Vrms)
There should be no affect on the screen image
stability under any conditions
Lime Green pantone # 577C
in
Cable type / length 3.5mm stereo cable / 1.8m length
Note: There is no guarantee <1 W power
Audio DPMS
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consumption in Active Off mode, when the Audio
Cable is connected
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4. Circuit Description
A. AC-DC CONVERTER
The power supply with a high-integrated green-mode PWM controller provides several features to
enhance the performance of power flyback converters.
U801 is a PWM controller and provides many protection functions.
U802 is a photo couple to transfer the feedback signal from the second side which U803 detected both of
the output DC voltage on 5V and 24V.
Z802 detected the working voltage on U801 and Q802 would pull down the voltage on U801 pin5 to
shut down U801 if feedback loop was failed.
R828 would be a dynamic load which was active while backlight was turned off and system still
working on, this kept 24V output voltage under 32V to protect the panel. After system went to
power saving mode, the R828 would no loaded. This was detected by Z803 active the R828 to load or
not.
B,Scaling Controller
Overview
Realtek RTD2523B series products are all-in-one LCD monitor controllers support up to
SXGA/XGA(optional), and integrate Realtek high performance ADC, TMDS Rx(optional), scaling engine,
OSD engine, LVDS TX, RSDS TX and so on. Moreover, all products are pin compatible in low pin count
package to save cost and make the design easier
General
z Embedded dual DDC support DDC1, DDC2B, DDC/CI
z Zoom scaling up and down
z Embedded Pattern Generator
z No external memory required.
z Require only one crystal to generate all timing
z Embedded reset control output
z Embedded crystal output to MICROP
z 3 channels 8 bits PWM output, and selectable PWM clock frequency.
Pin Description
(I/O Legend: A = Analog, I = Input, O = Output, P = Power, G = Ground)
ADC: 15 pins
Name
ADC_GND AG 27 ADC ground
ADC_REFIO AP 28 ADC band-gap voltage de-coupling 1.20V
ADC_VDD AP 29 Analog power (3.3V)
BLUE+ AI 30 Analog input from BLUE channel
BLUE- AI 31
ADC_GND AG 32 ADC ground
SOG/ADC_TEST AIO33 SOG in/ADC test pin
GREEN+ AI 34 Analog input from GREEN channel
GREEN- AI 35 Analog input ground from GREEN
ADCB_VDD AP 36 Analog power (3.3V)
RED+ AI 37 Analog input from RED channel
I/O
Pin No Description Note
Analog input ground from BLUE channel
channel
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RED- AI 38 Analog input ground from RED channel
ADC_GND AG 39 Analog ground
ADC_GND AG 40 Analog ground
ADC_VDD AP 41 Analog power (3.3V)
AHS AI 42 Analog HS input (10), (4), (5)
AVS AI 43 Analog VS input (2), (4), (5)
PLL: 8 pins
Name
XO AI 1 Reference clock output
XI AO 2 Reference clock input
DPLL_GND AG 3 Ground for digital PLL
DPLL_VDD AP 4 Power for digital PLL (3.3V)
APLL_VDD AP 5 Power for multi-phase PLL (3.3V)
PLL_TEST1 AIO6 Test Pin 1 / IRQ#
PLL_TEST2 AIO7 Test Pin 2/Power-on-latch for crystal out
APLL_GND AG 8 Ground for multi-phase PLL
I/O
Pin No Description Note
Frequency
Control Interface: 7 pins
Name I/O Pin No Description Note
SDIO [0] IO 54 Serial control I/F data in / Parallel port
data [0]
SDIO [1] / TCON [4] /
BBLU [0]
SDIO [2] / TCON [3] /
BBLU [1]
SDIO [3] / PWM2 /
TCON [2]
SCLK I 50 Serial control I/F clock (2), (3), (5)
SCSB I 111 Serial control I/F chip select (2), (3), (5)
RESET O 56 RESET output for Micron (2), (5), (6) / 2mA
Display & TCON/VIDEO-8 Port: 54 pins
IO 53 Parallel port data [1] / TCON [4] / TTL
BBLU [0]
IO 52 Parallel port data [2] / TCON [3] / TTL
BBLU [1]
IO 51 Parallel port data [1] / TCON [4] / PWM2(1), (2), (3), / 2mA
*2. Any timing not in the list, it should display as normal or show o n “OUT OF RANGE” OSD message without
blanking.
*3. The image quality of 85Hz mode might be worse than 75Hz.
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Firmware Update Procedure
1. The monitor’s firmware update for VA903m/b have two method.
Download the MCU IC by the fire machine. This proc edure is finished in SMT.
ISP Method. When the monitor ’s BIOS isn’t exist or firmware isn’t final program, this method Is worked by ISP
Cord with monitor.
2. VA903m/b monitor upgrade firmware by ISP Cord.
Equipment Needed
- USB cable for print port *1
- VGA cable*1
- LPT cable (25pin)*1
- AC power cable*1
- ISP fire cord (the fixture is made in TE ) for firmware upgrade*1
- Power adapter for firmware upgrade (this adapter is made in TE)*1
- A computer with Windows XP
- VA903m/b monitor ( no firmware)
- a additional monitor for system display
- ISP & ISP3.0program
NOTE:
The fixtures for firmware upgrade provide two differe nt methods to fire. Please check you monit or’s Main board,
refer to MCU-RSIC type and choose the method.
Below form appear the relation between the method and the MCU-RSIC type
METHOD
A
B
MCU
MYSON
OTHER
ASIC
M-STAR & NOVATEK
REALTEK
LPT PORT
JUMPER
PIN2-3 CLOSED
PIN1-2 CLOSED
TEST PCFixture ISP_CORDFixture POWER_ADAPTER
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LPT CableAC power CableVGA Cable
ISP3.0
SOFT
USB FOR PRINT
2.2. Setup Procedure
2.2.1 Connect PO1 of ISP fixture with print port of computer by LPT cable
2.2.2 Connect PO2 of ISP fixture with USB port of computer by USB cable
2.2.3 Connect PO3 of ISP fixture with monitor VGA port by VGA cable
2.2.4 Connect mouse, keyboard, AC power, monitor with computer
2.2.5 Plug AC cable in power adapter AC jack
2.2.6 Connect power adapter DC_OUTPUT port to main board DC_IN port
2.2.7 Connect PO3 of ISP fixture with VGA port of monitor’s main board by VGA cable
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PO2 to USB cablePO1 to LPT cable
AC JACK
DC_IN port
VGA port
jumper
PO3 to VGA cable
NOTE:
Do STEP2.2.6 and STEP2.2.7 for monitor’s main board only. Monitor firmware upgrade will jump this step.
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2.3. Soft install
Install ISP3.0 program by selecting and clicking “…\isp3.0\setup.exe”, press “YES” or “NEXT” buttons
until setup is complete.
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Installation will create a icon for ISP application in “START MENU”\PROGRAM
Press “finish” button exit setup
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STEP1: Choose the DCC written Program
set up the DCC written fixture ,check whether the connection between main board is in well
condition ,see attached file 1.1&1.2 per the product model ,choose the corresponding Model, DCC
written process, the model mr171-AAA should apply the SIP Program
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STEP2: Creat security file
Choose the Tab "create Security File " to enter next Dialogue Item
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STEP3: Input the related parameter, save them and take up the next step
STEP4: Choose the Tab MTV TYPE
Choose the MTV512M64 from the TAB ISP ITEMS
DCC Written model Diagram Table as below
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STEP5: DCC WRITTEN methods
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SETP6: Choose the DDC Written BIOS document
Choose the Tab LOAD MCU FILE,Looking up the related BIOS document in my Computer ,and Point
the confirm Tab
when the BIOS Documents' loading is successful ,you can find the picture as above
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Step 7.Confirm the BIOS'S check sum
In the above attached Display picture ,you should check whether the check sum's Data comply
to the bios' DCC written, if there is no problem ,pls press the run menu to write
If showed the picture as above pls check whether the DDC write fixture is well Connected with PC
the power board is power on and the program's setup is all right
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The normal program is writing
The program has finished writing
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Disassembly Procedure
1. Remove the hinge cover
2. Unscrew the back cover’s screw
3. open the back cover ,pull out the speaker wire
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4. Tear off the aluminum foil where fix up the light
Tear off the aluminum foil where cover the FFC cable,take out the key board from bezel ,pull out
5.
FFC cable from the main board;
6. pull out the two pcs screw form the main board
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7. pull out the two screws where lie in the two sides of the frame
8. pull out the screws which fix up the bezel and then take out the bezel
9. Take out the screw which covers the shield
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10. pull out the lamp wire material
11. take out the screw form the power board ,pull out the power boards’ connecter wire
12. take out the FCC Cable AL where lies in the panel ,pull out the FCC cable
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13. take out the main board’s screw
14. Remove the fame down towards
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Packing Procedure
1.1 Paste production film to protect the monitor screen.(Figure 1)
tape
Production film
1.2 Put the monitor in the PE bag and seal bag with type (Figure 2)
tape
1.3 Put the cushions on the monitor.(Figure 4)
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1.4 Put the base in the EPE bag. and then,place the base on the cushions ,as figure;
1.4.Place the monitor into the carton and then put all accessories into carton .At last,close the
carton.
Power cord
Use ‘s Guide
Base signal cord
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6. Troubleshooting Flow Chart
Main Procedure
Start
Connect all of devices to
the LCD monitor
Power On
Is indicator LED
light?
Yes
No
A. Power Circuit
Troubleshooting
1
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1
Is backlight on?
Yes
Display Performance
O.K.?
Yes
Function Adjustment
O.K.?
Yes
Audio Function O.K.?
No
No
No
No
B. Backlight
Troubleshooting
C. Performance
Troubleshooting
D. Function
Troubleshooting
E. Audio
Troubleshooting
No Trouble Found
End
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A. Power Circuit Troubleshooting
Start
Change AC/
DC Adapter
Retry Power
On
End
Change Main
Board & Retry
No Trouble Found
End
End
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B. Backlight Troubleshooting
Start
Change
Inverter and
Retry
Change
Main
Board&
Retry
End
End
Backlight
Change
Module
No Trouble Found
End
End
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C. Performance Troubleshooting
Start
Screen is
scrolling?
NO
Screen is
flickering?
NO
LCD Line Defect?
NO
Yes
YES
YES
Change VGA
Cable
YES
Change
Inverter Board
YES
Change LCD
Module
YES
No
NO
Change Main
Board
YES
Change Main
Board
YES
NO
Change LCD
Module
YES
Bad Uniformity?
NO
Is screen white?
NO
2
YES
YESNO
Change LCD
Module
YES
Check
Connector
YES
Change Main
Board
YES
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2
Screen with noise or line
bar?
No
Screen is smaller?
Yes
Prss Reset Button from
front panel control
No
Change Main
Board
Make sure relution is set
at default
No
YesYes
End
No
No Trouble Found
End
Yes
Yes
Reset O.K.?
No
Change Main
Board
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D. Function Troubleshooting
Start
Control Menu not
Functioning?
Yes
No
Change
Control Board
and Retry?
No
Change Main
Board
No Trouble Found
End
Yes
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E. Audio Troubleshooting
Start
Make sure sound output, Audio
cable is OK.
No Sound
No
Sound is broken?
No
Yes
Yes
Change
Speaker
Change
Speaker
Volume
Unadjustable?
No
No Trouble Found
End
Yes
Change Main
Board
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Remark 1:
Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to
Description
Power CordA-00008026W402091809531
Bracket - LM/MR19I-AAA Black CMOHW-00008014XLM191A200002
Craft BoxUpdated VendorF400718191A02
Above listed items are examples, supplier can expand the rows to add more necessary items.
eliminate repeated cross checks of each item between this version and prior versions.
Remark 1: Above listed items are examples, supplier can expand the rows to add more necessary items.
All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate
Remark 2:
repeated cross checks of each item between this version and prior versions.
Description
C-00008088
C-00008089
Updated Vendor F400718191A01
Part # on 10/12/06F4007K4191A01
ViewSonic CorporationConfidential - Do Not Copy VA903b-1_ VA903m-1
LCD MODULE HSD190ME13-A10 1280×1024 [SX] 19" LVDS HANNSTAR
LEAD FREE
Quick Install Manual 16 mandarin speeches LM/MR19I-AAA L190*W127mm for
viewsonic REV:0
base attachment procedure LM/MR17I-AAA ENGLISH L190*W127mm for
viewsonic VA703 REV:0
CARTON K4K(C) LM/MR19I-AAA L485*W163*H503mm for viewsonic VA903m
REV:1
PAPER COVER C LM/MR19I-AAA L1147*W981*H60mm(內尺寸)0.035
AC POWER CORD USA size RVV 300/500V 3G S0.75mm2 L180cm BLACK
YISHENG
POWER BOARD+INVERTER BOARDASSY PI-SB03 24V+5V LM/17''/19'' LCD
MONITOR FOR VIEWSONIC REV:1(PHIHONG FEI HONG )
POWER BOARD+INVERTER BOARDASSY PI-SB03 24V+5V LM/17''/19'' LCD
MONITOR FOR VIEWSONIC REV:1(UMEC HUAN LONG )
IC LINEAR IC VOLTAGE REGULATOR GL1117A-3.3 (INPUT 4.8~12V
OUTPUT 3.3V) SOT-223 GTM LeadFree (SMD)
IC LINEAR VOLTAGE REGULATOR LD1117-18-A SOT-223 3PIN 1.8V UTC
(SMD)
LINEAR IC POWER AMPLIFIE with Volume contorl PA2065JI 2W DIP-16PIN
ANPEC (DIP)
CAP EC -40~105°c 680uF 10V ±20%(M) Φ8*H11.5mm P=3.5mm(Curve FOOT
P=2.0mm) LEAD FREE (DIP)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
ViewSonic CorporationConfidential - Do Not Copy VA903b-1_ VA903m-1
4N/AF0004171AK001Quick Install Manual LM/MR19I-AA L190*W127mm for viewsonic REV:
5N/AF0010171A3001
6N/AF001217043001Explanation card LM/LM1704 ENGLISH L210*W148mm for Viewsonic REV:
7N/AF101415170401MARK LM/LM1704 L11*W11mm energy sta
8N/AF102506191A03Safety Label LM/MR19I-AA L89.5*W49.5mm for viewsonic (VA903b) REV:
9N/AF103015170401Blank Label LM/LM1704 L50*W25m
10DC-00008065F103015171A01Blank Label LM/MR17I-AAA L36*W9mm for viewsonic chin
11N/AF103915170401CARTON LABEL(UPC) LM/LM1704 L76*W76mm FOR VIEWSONIC1
12N/AF103915171A01CARTON LABEL LM/MR17I-AAA L89*W58mm for viewsonic 8m
13N/AF104515170401RATING LABEL LM/LM1704 L7*W7mm for Viewsoni
14P-00008071F20133191A002POLYETHYLENE-L EPS LM/MR19I-AAA L155*W155*H483m
15P-00008072F20143191A002POLYETHYLENE-R EPS LM/MR19I-AAA L155*W155*H483m
16N/AF300250000047BAG /PE L550*W480*T0.03mm transparen
17N/AF300272501501PLASTIC BAG LDPE L250*W150*T0.08m
18N/AF4007K4191A01carton K4K C LM/MR19I-AA L485*W163*H503mm for viewsonic VA903b REV:
19N/AF401422LM0001PARTITION SUPPORT BC LM/MONITOR series L800*W50*H50*T5m
20N/AF401422LM0003PARTITION SUPPORT BC LM/MONITOR series L2000*W50*H50*T5m
21N/AF401918191A01
22N/AF50301F199002PALLET SMOKE WOOD LM/F199 L1140*W980*H120mm0.017
23N/AF801191000005 CD M/MR19I-AA For viewsonic HSD REV:11
24N/AF900181000001PE LIMPID W500*T0.03mm1500m/ROLL PACKTHREAD PP WHITE0.0003
25N/AF9008G2000002PACKTHREAD PP WHITE W14.5mm*T0.8mm 1300m/rol
26N/AM101082807401SCREW COPPER Φ2.8*L7mmWITH NICKEL2
27N/AM105223004401SCREW MACHINE (Binding) Φ3.0mm L5mmNICKEL15
28N/AM105244006401SCREW BINDING Φ4.0*L6mm WITH NICKEL AD WASHER1
29N/AM108224008401MACHINE SCREW Φ4.0*L8mm NICKEL4
30N/AM115233008401SCREW TA PW Φ3.0*L8.0mm NICKEL Washer(Φ10.0mm)1
31N/AM621700LM0390-G Main Bracket SECC LM/MR19I-AAA REV:
32N/AP36D1C2010001MYLAR L410*W320*T0.12mm LIMPI
33N/AP440703800001RUBBER CUSHION(housing) Φ7.45*Φ3.2*H8mm GREY4
34N/AP441508980001RUBBER CUSHION /RUBBER L15*W8*T9.8mm BLACKL15*8*9.8 BLACK2
35N/AP532015A20001 CUSHION L20*W15*T12mmEV
36N/AP705A997LM032-A Back Cover ABS HB GRAY Shoot shaping LM/MR17I-AA REV:2(gaocheng
37N/AV5004AP150201ADHESIVE TAPE L25000*W15*T0.25mm 25m/ROLL(YW0910300002
38N/AV900505020003AL FOIL L50×W30×T0.10m
39N/AV900505030001 AL FOIL L100xW40xT0.07m
40N/AV900505030007AL FOILL100xW30*T0.35mm(Y78400004G*1)4
41CB-00006504W0926418AQ951VGA CABLE 30AWG UL20276 L1800mm 15PIN black1
42A-00008026W402091809531
43CB-00008033W47A103015003AC POWER CORD UL 22AWG L150cm BLACK YISHENG1
ViewSonic CorporationConfidential - Do Not Copy VA903b-1_ VA903m-1
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Page 76
11. PCB Layout Diagrams
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ViewSonic Corporation
Model
Title
TOP
DateRev:
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ViewSonic Corporation
Model
Title
BOTTOM
DateRev:
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ViewSonic Corporation
Model
Title
DRILL DRAWING
DateRev:
Page 79
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75
ViewSonic Corporation
Model
Title
MASK-TOP
DateRev:
Page 80
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ViewSonic Corporation
Model
Title
MASK-BOTTOM
DateRev:
Page 81
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77
ViewSonic Corporation
Model
Title
SMD-TOP
DateRev:
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ViewSonic Corporation
Model
Title
SILKSCREEN-BOTTOM
DateRev:
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ViewSonic Corporation
Model
Title
SILKSCREEN-TOP
DateRev:
Page 84
* Reader’s Response*
Dear Readers:
Thank you in advance for your feedback on our Service Manual, which allows continuous improvement
of our products. We would appreciate your completion of the Assessment Matrix below, for return to
ViewSonic Corporation.
Assessment
A. What do you think about the content of this Service Manual?
Unit ExcellentGood Fair Bad
1. Precautions and Safety Notices
2. Specification
3. Front Panel Function Control Description
4. Circuit Description
5. Adjustment Procedure
6. Troubleshooting Flow Chart
7. Recommended Spare Parts List
8. Exploded Diagram and Exploded Parts List
9. Block Diagrams
10. Schematic Diagrams
11.PCB Layout Diagrams
B. Are you satisfied with this Service Manual?
Item Excellent Good Fair Bad
1. Service Manual Content
2. Service Manual Layout
3. The form and listing
C. Do you have any other opinions or suggestions regarding this service manual?
Name:
Reader’s basic dada:
Title:
Company:
Add:
Tel:
Fax:
E-mail:
After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile
1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes
(marc.maupin@viewsonic.com)
ViewSonic CorporationConfidential - Do Not Copy VA903b-1_ VA903m-1
80
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