ViewSonic VX1935wm-3 Service manual

Service Manual
ViewSonic VX1935wm-3
Model No. VS11444
19” Color TFT LCD Display
(VX1935wm-3_SM Rev. 1a Oct. 2006)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583
Copyright
Copyright © 2006 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.
Revision History
Revision
SM Editing Date
1a
10/26/2006
ViewSonic Corporation
ECR Number
Description of Changes
Initial Release
Jamie Chang
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i
Editor
VX1935wm-3
TABLE OF CONTENTS
1.
Precautions and Safety Notices
1
2.
Specification
4
3.
Front Panel Function Control Description
13
4.
Circuit Description
21
5.
Adjustment Procedure
33
6.
Troubleshooting Flow Chart
45
7.
Recommended Spare Parts List
53
8.
Exploded Diagram and Exploded Parts List
56
9.
Block Diagram
60
10. Schematic Diagrams
61
11. PCB Layout Diagrams
68
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1. Precautions and Safety Notices
1. SAFETY PRECAUTIONS
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:
This 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.
Use only the special power adapter that comes with this monitor for power input.
Do not try to repair the monitor by yourself, as it contains no user-serviceable parts. Only the
qualified technician can repair it.
Do not remove the monitor cabinet. There are high-voltage parts inside that may cause electric
shock to human bodies.
Stop using the monitor if the cabinet is damaged. Have it checked by a service technician.
Put your monitor only in a lean, cool, dry environment. If it gets wet, unplug the power cable
immediately and consult your closed dealer.
Always 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 glass screen.
Do not place heavy objects on the monitor or power cord.
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.
3.
SERVICE NOTES
When replacing parts or circuit boards, clamp the lead wires around terminals before soldering.
Keep wires away from high voltage, high temperature components and sharp edges.
Keep wires in their original position so as to reduce interference.
Adjustment of this product please refers to the user’ manual.
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Handling and Placing Methods
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2. Specification
1.
INTRODUCTION
FEATURES
TFTLCD PANEL
1st
Innolux
MT190AW01 V.0
VX1935wm-3
Size
19 " wide
Luminance (Typ)
300 cd/㎡
Contrast Ratio (Typ)
700:1
Colors
16.2 M (6 bits + 2 bits FRC)
Response Time
5 ms(on/off)
Viewing Angle (H/V)
160 ° / 160 °
Recommend resolution
Input Signal
Sync Compatibility
Compatibility
Power Voltage
Power Consumption
Audio
Ergonomics
OSD Control
Dimension
Weight
Operating Condition
Storage Condition
1440x900@60Hz
Analog
Yes (75ohms, 0.7/1.0 Vp-p)
Digital
Yes
Separate Sync
Yes
Composite Sync
Yes
Sync on Green
Yes
PC
Yes
Power Mac
Yes
TV Box (NextVision 6)
Yes
AC 100-240V, 50/60Hz
Yes
On Mode(Max / Typ)
42 W / 35 W
≦1 W
Off Mode (Max)
2W / THD 10% (Max)
Yes
Tilt ( 20 ° - -5 °)
Yes
Swivel
No
Pivot
No
Height Adjust
No
[ 1 ] [ 2 ] [ ][▼] [▲]
Yes
Physical (W x H x D)
450 x 434 x 209mm
Package (W x H x D)
545*515*162mm
Physical (Net Weight)
5.2 Kg / 11.5 lbs
Package (Gross Weight)
6.7 Kg / 14.8 lbs
Temperature (℉/℃)
32℉-104℉ / 0℃-40℃
Humidity (%)
20 % - 80 %
Temperature (℉/℃)
-4℉-140℉ / -20℃-60℃
Humidity (%)
10% - 90 %
Global: CB, MPR II, WEEE,ROHS , ISO13406-2
VSA:UL, cUL, FCC-B, TUV-S, NOM, Energy Star
Regulation
VSE:TUV/ERGO,CE ,GOST-R+Hygienic ,SASO , ENERGY
VSI: BSMI, CCC, PSB, C-TICK, MIC
VSCN:CCC
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2.
GENERAL specification
Test Resolution & Frequency
1440x900 @ 60Hz
Test Image Size
Full Size
Contrast and Brightness Controls
3.
Factory Default:
Contrast = 70%, Brightness = 100%
VIDEO INTERFACE
Analog Input Connector
DB-15 (Analog),
Digital Input Connector
DVI-D (Digital),
Default Input Connector
Defaults to the first detected input
Video Cable Strain Relief
Equal to twice the weight of the monitor for five minutes
Video Cable Connector DB-15 Pin out
Compliant DDC 1/2B
1. Video RGB (Analog)
Video Signals
Separate, Composite, and Sync on Green
2. TMDS (Digital)
Video Impedance
75 Ohms (Analog), 100 Ohms (Digital)
Maximum PC Video Signal
950 mV with no damage to monitor
Maximum Mac Video Signal
1250 mV with no damage to monitor
Sync Signals
TTL
DDC 1/2B
Compliant with Revision 1.3
Sync Compatibility
Separate Sync, Composite Sync, SOG
Video Compatibility
Shall be compatible with all PC type computers, Macintosh
computers, and after market video cards
640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x 600, 832 x
624, 1024 x 768, 1152 x 864, 1152 x 870, 1280 x 720, 1280 x
Resolution Compatibility
960, 1280 x 1024 , 1400 x 1050 , 1440 x 900
* The image vertical size might not be full screen.
But the image vertical position should be at the center.
Exclusions
4.
Not compatible with interlaced video
POWER SUPPLY
Internal Power Supply
Part Number:ILPI-024
Input Voltage Range
90 to 264 VAC (100~240VAC ±10%)
Input Frequency Range
47 to 63 Hertz
Short Circuit Protection
Output can be shorted without damage
Over Current Protection
5.0 A typical at 14.0 VDC
Leakage Current
3.5mA (Max) at 254VAC / 60Hz
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Efficiency (at 115VAC Full Load)
Typical: 80%
Minimum: 75%
Fuse
Internal and not user replaceable
Power Output
35 Watts (typ)
Ripple and Noise
Ripple: <3%
Max Input AC Current
1.2 Arms @ 100VAC, 0.6 Arms @240VAC
40 A (max) @ 120VAC
Inrush Current (Cold Start)
60 A (max) @ 220VAC
Shall start and function properly when under full load, with all
combinations of input voltage, input frequency, and operating
Power Supply Cold Start
temperature.
Shall be able to withstand an ANSI/IEEE C62.41-1980 6000V 200
ampere ring wave transient test with no damage.
Power Supply Transient Immunity
Shall be able to withstand 1.5 times nominal line voltage for one
Power Supply Line Surge Immunity
cycle with no damage.
Shall be able to function properly, without reset or visible screen
artifacts, when ½ cycle of AC power is randomly missing at
Power Supply Missing Cycle Immunity
nominal input.
The power supply shall not produce audible noise that would be
detectable by the user.
compliance
Power Supply Acoustics
with
ISO
Audible shall defined to be in
7779
(DIN
EN27779:1991)
Noise
measurements of machines acoustics. Power Switch noise shall
not be considered.
Power Saving Operation(Method)
VESA DPMS Signaling
Power Consumption
Mode
LED
On
Green
Stand By
Amber
<2W
Active Off
Off
<1W
Recovery Time
ViewSonic Corporation
Power Consumption
35 W (Typ)
42 W (max)
On Mode = N/A, Active Off < 3 sec
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5.
ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency
30 – 82 kHz
Vertical Refresh Rate
56 – 75 Hz
Maximum Pixel Clock
135 MHz
Sync Polarity
Independent of sync polarity
Timing Table
@
70 Hz,
SOG
640 x 350
Composite
Separated
Item
1
Timing
31.5 KHz
Digital - TMDS
Analog
Remark
For Analog sync, the image vertical size image
will be not full screen (Still at the center)
2
640 x 400
@
60 Hz,
31.5 KHz
For Analog sync, the OSD will be
640x480@60Hz
3
640 x 400
@
70 Hz,
31.5 KHz
For Analog sync, the image vertical size image
will be not full screen (Still at the center), And the
OSD will be 640x400/720x400 (primary=
720x400).
4
640 x 480
@
50 Hz,
24.7 KHz
5
640 x 480
@
60 Hz,
31.5 KHz
6
640 x 480
@
67 Hz,
35 KHz
7
640 x 480
@
72 Hz,
37.9 KHz
8
640 x 480
@
75 Hz,
37.5 KHz
9
640 x 480
@
85 Hz,
43.3 KHz
10
720 x 400
@
70 Hz,
31.5 KHz
For Analog sync, the image vertical size image
will be not full screen (Still at the center), And the
OSD will be 640x400/720x400 (primary=
720x400).
11
720 x 480
@
60 Hz,
31.5 KHz
For Analog sync, the information OSD shows
640x480
12
720 x 576
@
50 Hz,
31.3 KHz
13
800 x 600
@
56 Hz,
35.1 KHz
14
800 x 600
@
60 Hz,
37.9 KHz
15
800 x 600
@
72 Hz,
48.1 KHz
16
800 x 600
@
75 Hz,
46.9 KHz
17
800 x 600
@
85 Hz,
53.7 KHz
18
832 x 624
@
75 Hz,
49.7 KHz
19
1024 x 768
@
50 Hz,
39.6 KHz
For Analog sync, Switch 1024x768@50Hz and
1280x768@50Hz by [1]+[2] short cut key
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20
1024 x 768
@
60 Hz,
48.4 KHz
21
1024 x 768
@
70 Hz,
56.5 KHz
22
1024 x 768
@
75 Hz,
60 KHz
23
1024 x 768
@
75 Hz, 60.02 KHz
24
1024 x 768
@
85 Hz,
68.7 KHz
25
1152 x 864
@
75 Hz,
67.5 KHz
26
1152 x 870
@
75 Hz,
68.7 KHz
27
1280 x 768
@
50 Hz,
39.6 KHz
For Analog sync, Switch 1024x768@50Hz and
1280x768@50Hz by [1]+[2] short cut key
28
1280 x 768
@
60 Hz,
47.4 KHz
29
1280 x 768
@
60 Hz,
47.8 KHz
30
1280 x 768
@
75 Hz,
60.3 KHz
For Analog sync, Switch 1024x768@75Hz and
1280x768@75Hz by [1]+[2] short cut key
31
1280 x 960
@
50 Hz,
49.4 KHz
32
1280 x 960
@
60 Hz,
60.0 KHz
33
1280 x 960
@
75 Hz,
75.2 KHz
34
1280 x 1024 @
50 Hz,
52.7 KHz
35
1280 x 1024 @
60 Hz,
64 KHz
36
1280 x 1024 @
70 Hz,
74.8 KHz
37
1280 x 1024 @
72 Hz,
76.8 KHz
38
1280 x 1024 @
75 Hz,
80 KHz
39
1360 x 768
@
60 Hz,
47.7 KHz
40
1400 x 1050 @
50 Hz,
54.1 KHz
41
1400 x 1050 @
60 Hz,
64.7 KHz
42
1400 x 1050 @
60 Hz,
65.3 KHz
43
1400 x 1050 @
75 Hz,
82.3 KHz
44
1440 x 900
@
60 Hz,
55.5 KHz
45
1440 x 900
@
60 Hz,
55.9 KHz
46
1440 x 900
@
75 Hz,
70.6 KHz
*1. Tolerance ≧ ±2KHz.
*2. Any timing not in the list, it should display as normal or show on “OUT OF RANGE” OSD message without
blanking.
*3. The image quality of 85Hz mode might be worse than 75Hz.
Primary Presets
1440x900 @ 60Hz
User Presets
Number of User Presets (recognized timings) Available: 10 presets total in FIFO configuration
Changing Modes
● Maximum Mode Change Blank Time for image stability : 5 seconds (Max), excluding “Auto Adjust” time
● Under DOS mode (640 x 350, 720 x 400 & 640 x 400), it should recall factory setting when execute “Auto
Adjust”
● The monitor needs to do “Auto Adjust” the first time a new mode is detected
(see section “0-Touch™ Function Actions”)
● While running Change Mode, Auto Adjust or Memory Recall, the image shall blank
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2.6 FRONT PANEL CONTROLS AND INDICATORS
Front Panel Hardware Controls
Power Switch (Front Head)
Power Control, soft Power Switch.
Power LED (Front Head)
Blue – ON
Orange –Power Saving Mode
Dark = Soft Power Switch OFF
[ 1 ] BUTTON 1
[ 2 ] Button 2
Front Panel Controls (Head)
[ 1 ] [ 2 ] [ ] [▼] [▲]
[ ] Power
[▼] DOWN ARROW BUTTON
[▲] Up arrow button
Note: Power Button, Button 1 and Button 2 must be one-shot
logic operation. (i.e. there should be no cycling)
Reaction Time
OSD must fully appear within 0.5s after pushing Button 1
Short Cuts Function from the button(s)
[1]
Main Menu
[2]
Input toggle (Analog or Digital)
[▼] or [▲]
To immediately activate Brightness /Contrast menu.
[▼]+ [▲]
Recall both of Contrast and Brightness to default
[1] + [2]
Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode
[1] + [▼] + [▲]
White Balance. (Not shown on user’s guide)
(Keep pushing 3 sec)
[1] + [▼]
Power Lock
[1] + [▲]
OSD Lock
[2] + [ ]
Factory Mode
Remark : All the short cuts function are only available while OSD off
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
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"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. Recall white balance to factory setting
2. Set the factory defaults as shown in Section 4-8
3. Clean all the mode setting buffer
4. Execute Auto Image Adjust
Note: Memory Recall should have no effect for Language, Power Lock, User Color Settings or Input Priority
Resolution Notice Actions
1. Resolution Notice OSD should show on screen after changing to non-native mode for 30 sec
2. For auto input select function, it shall meet the requirement in Appendix D.
3. 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
Factory Defaults
Item
Defaults
Item
Defaults
Contrast
70%
Brightness
100%
Resolution Notice
Enabled
Color Temperature
6500K
Volume
N/A
Sharpness
100%
Balance
N/A
OSD H. Position
50%
Treble
N/A
OSD V. Position
50%
Bass
N/A
OSD Time Out
15 Sec
OSD Background
Enabled
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Input Priority
N/A
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2.7 AUDIO INTERFACE (SPEAKER SPECIFICATION)
Line input signal
1 Vrms
Line input impedance
10 kOhm
Maximum Amp power output (Watt)
2.0 W (RL=8Ω)
Speaker Power rating(Ω/Watt)
8Ω/2 W (typ.) ; 8Ω/ 3 W (max)
THD
10%
Signal to Noise Ratio
75 dB
Frequency response
200 Hz – 20 Khz
SPL.
82 ± 3 dB
Line input connection
3.5 mm stereo jacks
(Maxmum output @ 1KHZ)
There should be no audible vibration resonance at
Vibration
volume=100% & treble / bass in def. value
There should be no affect on the screen image stability under
Screen image
any conditions
Connector PC99 requirement Audio in
Lime Green pantone # 577C
Cable type / length
3.5mm stereo cable / 1.8m length
Speakers stay Off
when the rest of the monitor is in power
saving
Audio DPMS
Note: There is no guarantee <2 W at power consumption in
Active Off mode, when the Audio Cable is connected
LCD PANEL Type:
INL
19” wide Color TFT Active Matrix WXGA LCD. (MT190AW01 V.0)
1st panel
Pixel Pitch
0.285mm (H) x0.285mm(V)
source
Color Filter
RGB Vertical Stripe
Glass
Anti-Glare treatment and hard-coating 3H
Viewing Angle CR > 10 Horizontal = 140 Degrees (Min), Vertical = 140 Degrees (Min)
Horizontal = 160 Degrees (Typ), Vertical = 160 Degrees (Typ)
1
Contrast Ratio
700:1 (Typ), 500:1 (Min)
Brightness
300 cd/m2 (Typ), 230 cd/m2 (Min),
Response Time
Tr = 1.5ms (Typ), Tf =3.5ms (Typ). Tr+Tf = Total = 5ms (Typ)
Tr = 6.5ms (Max), Tf = 8.5ms (Max) Tr+Tf = Total = 15ms (Max)
16.2 million colors (6 bits + 2 bits FRC)
Color Depth
40,000 Hrs (Min)
Backlight Life
INPUT
2. SIGNAL
Video
RGB Analog (75 ohms, 0.7 Vp-p); DVI-D
Sync
H/V Separated (TTL), Composite, SOG
FH:30~82kHz, FV:50~85Hz
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VGA up to 1440 x 900 non-interlaced
COMPATIBILI PC
3. TY
Power Macintosh up to 1440 x 900
Mac
RESOLUTIO Max
1440 x 900 @ 60, 75 Hz NI
N
1400 x 1050 @ 60, 75 Hz NI
1280 x 1024 @ 60, 75,85 Hz NI
1024 x768 @ 60, 75,85 Hz NI
800 x 600 @ 60, 75 ,85Hz NI
640 x 480 @ 60, 75 Hz NI
CONNECTO Signal
Head
DVI-I
R
Audio in stereo Jack
Power
POWER
15 pin mini D-sub
Head
3 Pin AC Plug, (CEE22)
Voltage
AC/DC
AC 100 – 240 VAC 50-60 Hz (auto switch)
Consumption
Internal 35W (Typ) / 43W (Max)
Power
SPEAKER
2w x2 ,
Stereo Speaker
ERGONOMIC Tilt
Down
5 Degrees
S
Up
20 Degrees
CONTROLS Physical
LCD
[1], [2] , Power (Soft) , Down[▼], Up[▲]
Head
Auto Image Adjust*1
OSD
Main
Contrast/Brightness*2*4
Menu
Input Select
Analog, Digital
Audio Adjust
Volume*4, Mute*4
Color Adjust
SRGB, 9300K, 7500K,6500K(default), 5400, User Color [R, G, B]
Information
Resolution, H Frequency, V Frequency, Pixel Clock, Serial Number,
Model Number,
“www.ViewSonic.com”
Manual Image Adjust
Horizontal. Size*1, H/V. Position*1, Fine Tune*1, Sharpness*3
Setup Menu
Language [English, French, German, Italian, Spanish, Finnish,
Japanese,
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Traditional Chinese, Simplified Chinese], Resolution Notice, OSD
Position,
OSD Timeout, OSD Background
Short Cut Memory Recall
[1]: Main Menu
[2]: Input Select
[▲] or [▼]: Brightness/Contrast
[▲] + [▼]: Recall Contrast and Brightness
[1] and [▼]: Power lock/unlock
[1] and [▲]: OSD lock/unlock
*1 These functions are not available in Digital Mode
*2 These functions are not available under sRGB Mode
*3 These functions are not available under Native Resolution Mode
*4 These functions setting can be recalled to default by [▼]+[▲]
BANDWIDTH Pixel Clock
Digital 140 Mhz (Max) Analog 140 Mhz (Max)
DISPLAY
410.4 (H) x 256.5 (V)
AREA
OPERATING Temperature
32°F to 104°F (0°C to 40°C)
CONDITION Humidity
20% to 80% (no condensation)
STORAGE / Temperature
-4°F to 140°F (-20°C to 60°C)°
SHIPPING
10% to 90% (no condensation)
Humidity
CONDITION
450 mm (W) x 434 mm (H) x 209 mm (D)
DIMENSIONS Physical
17.7” (W) x 17” (H) x 8.2” (D)
Panel Only
Packaging
W/o
450 mm (W) x 341 mm (H) x 65.5mm (D)
base
17.7” (W) x 13.4” (H) x 2.6”(D)
545 mm (W) x 515 mm (H) x 162 mm (D)
21.5” (W) x 20.3” (H) x6.4” (D)
WEIGHT
Net
5.2kg (11.5 lbs)
Net(w/o stand)
4.7kg (10.4 lbs)
Gross
6.7kg (14.8 lbs)
REGULATIO
Global: CB, MPR II, WEEE,ROHS , ISO13406-2
NS
VSA:UL, cUL, FCC-B, TUV-S, NOM, Energy Star
VSE:TUV/ERGO,CE ,GOST-R+Hygienic ,SASO , ENERGY
VSI: BSMI, CCC, PSB, C-TICK, MIC
VSCN:CCC
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RELIABILITY MTBF
100,000hrs (demonstrated) excluding Light source
Light Source MTBF: 40K hrs (Min)
POWER
"On"
Green
Normal
SAVING
"Sleep"
Amber
<2W
FUNCTION
"Off"
<1W
LOGISTICS
Container Load 20’/40’
560/1120 pcs (Palletized)
Pallet Load
Air/Sea 56/56 pcs
UPC-A Code
7 66907 21621 9
ITF-14 Code
0 07 66907 21621 9
Serial Format
QCXyywwxxxxx
Country of
China
Origin
SECURITY
Wall Mount
Kennsington lock on the bottom right side
VESA
100mm x 100mm
ACCESSORI
Power Cable
ES
15 Pin VGA Video Cable
DVI-D Cable
Audio Cable
Quick Start Guide
ViewSonic Wizard CD-ROM w/ 17 Language User Guide
EU Packaging 1. Weight of the individual (empty) shipping carton. ---------- Weight =903 g/box
Information
2. Weight and materials of the poly foam ------ Weight = 200g/piece, 2 pieces per box, Material
= EPS
3. Weight and material of the empty accessory plastic bags --------- Weight = 2g/bag, Material=
PE
4. Weight and material of the plastic handle ------- Weight = 10 g/piece, Material=PE Plastic
5. Weight and material of the PE bag that covers the monitor -------- Weight = 19g/bag,
Material=PE
6. Weight / Material of Pallets:
7. A/E/M/U/ S/G/J//K/P model -Weight =12+/-3kg, Material= Solid Wood (Fumigation)
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3. Front Panel Function Control Description
Adjusting the Screen Image
Main Menu
with OSD controls
Front Control Panel
shown below in detail
Standby Power On/Off
Power light
Blue = ON
Orange = Power Saving
Displays the control screen for
the highlighted control.
Also toggles between two
controls on some screens.
Also a shortcut to Auto Image
Adjust.
Scrolls through menu
options and adjusts the
displayed control.
Also a shortcut to display
the Contrast adjustment
control screen.
Displays the Main
Menu or exits the
control screen and
saves adjustments.
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Do the following to adjust the display setting:
1. To display the Main Menu, press button [1].
NOTE: All OSD menus and adjustment screens disappear automatically after about 15
seconds. This is adjustable through the OSD timeout setting in the setup menu.
2. To select a control to adjust, pressSorTto scroll up or down in the Main Menu.
3. After the desired control is selected, press button [2]. A control screen like the one shown
below appears.
The command line at the bottom of the
control screen tells what to do next from
this screen. You can toggle between control
screens, adjust the selected option, or exit
the screen.
4. To adjust the setting, press the up S or down T buttons.
5. To save the adjustments and exit the menu, press button [1] twice.
The following tips may help you optimize your display:
• Adjust the computer's graphics card so that it outputs a 1440 x 900 @ 60Hz video signal to
the LCD display. (Look for instructions on “changing the refresh rate” in the graphics card's
user guide.)
• If necessary, make small adjustments using H. POSITION and V. POSITION until the
screen image is completely visible. (The black border around the edge of the screen should
barely touch the illuminated “active area” of the LCD display.)
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Main Menu Controls
Adjust the menu items shown below by using the up S and down T buttons.
Control
Explanation
Auto Image Adjust sizes and centers the screen image automatically.
Contrast adjusts the difference between the image background (black level)
and the foreground (white level).
Brightness adjusts background black level of the screen image.
Input Select toggles between inputs if you have more than one computer
connected to the VX1935wm.
Audio Adjust
Volume increases the volume, decreases the volume, and mutes the audio.
Mute temporarily silences audio output.
Color Adjust provides several color adjustment modes, including preset color
temperatures and a User Color mode which allows independent adjustment of
red (R), green (G), and blue (B). The factory setting for this product is 6500K
(6500 Kelvin).
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VX1935wm-3
Control
Explanation
sRGB-This 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).
7500K - 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-Adds green to the screen image for a darker color.
User Color Individual adjustments for red (R), green (G), and blue (B).
1. To select color (R, G or B) press button [2].
2. To adjust selected color, pressSandT.
Important: 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 displays the timing mode (video signal input) coming from the
graphics card in the computer, the LCD model number, the serial number, and
the ViewSonic® website URL. See your graphics card’s user guide for
instructions on changing the resolution and refresh rate (vertical frequency).
NOTE: VESA 1440 x 900 @ 60Hz (recommended) means that the resolution is
1440 x 900 and the refresh rate is 60 Hertz.
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Control
Explanation
Manual Image Adjust Sub-menu
H. Size (Horizontal Size) adjusts the width of the screen image.
H./V. Position (Horizontal/Vertical Position) moves the screen image left or
right and up or down.
Fine Tune sharpens the focus by aligning text and/or graphics with pixel
boundaries.
NOTE: Try Auto Image Adjust first.
Sharpness adjusts the clarity and focus of the screen image.
Setup Menu displays the menu shown below:
Language Select allows the user to choose the language used in the menus and
control screens.
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VX1935wm-3
Control
Explanation
Resolution Notice allows the user to enable or disable this notice.
If you enable the Resolution Notice shown above and your computer is set at a
resolution other than 1440 x 900, the following screen appears.
OSD Position allows the user to move the OSD menus and control screens.
OSD Timeout sets the length of time the OSD screen is displayed. For example,
with a “30 second” setting, if a control is not pushed within 30 seconds, the
display screen disappears.
OSD Background allows the user to turn the OSD background On or Off.
Memory Recall returns the adjustments back to factory settings if the display is
operating in a factory Preset Timing Mode listed in the Specifications of this
manual.
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4. Circuit Description
4.1 Switching Mode Power Supply
4.1.1 AC Current Input Circuit
P801 is a connector for connecting AC Power. F801 is a fuse to protect all the circuit. AC input
voltage is from 90v to 264V. R801 and R802 joined between two inputting main circuit to prevent
man from shock. L801 is used to clear up low frequency wave. C801 and C802 are used to discharge
the waves that L801 produced. High frequency waves are damped by C801 and C802. D801 is a
rectifier which composed of 4 build-in diodes, it inverts AC to DC.
4.1.2 High Voltage to Low Voltage Control Circuit
C804 is used to smooth the wave from rectifier. IC802 is a highly integrated PWM controller.
When rectified DC high voltage is applied to the HV pin during start-up, the MOSFET Q804 is
initially off, and the Vcc pin capacitor is charged. When the Vcc pin voltage reaches approximately
10V, the control circuitry is activated and the soft-start begins. The soft-start circuit gradually
increases the duty cycle of the MOSFET from zero to the maximum value over approximately 4ms.
If no external feedback/supply current is fed into the FB pin by the end of the soft-start, the current
Setpoint will be above the fault level, FAULT flag is raised, if the FAULT duration exceeds 80ms,
the output controller disable
Resistor R808, R809, R810, R811 are for line over voltage shutdown(OVP)
When PWM is turned off, the main current flow will be consumed through R804 and D802,
This will prevent MOSFET Q804 from being damaged under large current impulse and voltage
spike.
D803 and C807 to provide internal Auxiliary voltage to Vcc pin during normal operation.
Otherwise, error amplifier and feedback current input the FB pin for duty cycle control.
4.1.3 DC_5V and DC_14V Output Circuit
For DC 5V, D805 is used to rectify the inducted current. R828 and C814 are used to store
energy when current is reversed. The parts including C818, C822, C820,L803 are used to smooth
the current waves.
For DC 14V, D803 is used to rectify the inducted current. R827 and C813 are used to store
energy when current is reversed. The parts including C815, C817 and L802 are used to smooth the
current waves.
4.1.4 Feedback and OVP Protect Circuit
Pin R of IC803 is supplied 2.5-v stable voltage. It connects to 5V and 14V output through
R822, R823 and R824. R822, R823 and R824 are output sampling resistor. When the sampling
voltage more than 2.5V or less than 2.5V, current of FB IC802 will change, this can change the
voltage from T801.
OVP Protect Circuit: When output is overvoltage, the auxiliary winding voltage will be
increased, when it reaches about 14V. Q803 is triggered . It makes the IC802 Pin 1 exceed 5V, then
the IC802 output will be disabled.
Q801, R816, R817 and ZD803 make up of dummy loading circuit. For start-up sequence,
during 5V output take place high loading first, this dummy loading circuit operated to insure 14V
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not be increased.
4. 2
Inverter Circuit
1R503, ZD501, R502, Q501 components convert +14V voltage into +5.0V voltage, and the voltage supply to
IC501. The extra PWM pulse signal (BRIGHTNESS signal)input to control IC through R512, R514, C510, The LCT pin
is set to a DC voltage of 0.7V by using a resistor divider(R507, R516), change the duty of PWM pulse, will regulate the
lamp current. The ON/OFF voltage connect to pin10 of IC501 through D501, R501, A voltage of 2V to pin10 of IC501
enables the IC and activates the striking timer. The SSTCMP pin of IC501 performs the soft function, the C511 set the
time of SST. The operation frequency determined by external capacitor C512, C521 and resistor R508 connected at CT
pin of IC501. C515 connect the TIMER pin of IC501, the capacitor to set striking time and shunt down delay time.
DRV!, DRV2 output for power MOSFET U501, U502.
2.OZ9938 provides two drive signals forU501, U502, and they work in push pull topology driving, two
transformers are connected in parallel with each transformer driving two lamps in series.Turningeach N-Channel
MOSFET “on/off" complementarily, produces an alternating current through thetransformer primary and secondary.
The “on" duration of the switches determines the amount of energy delivered to the CCFLs. R504, C504, R505,
C505, R532, C529, R530, C522 are snubber networks, they suppress Voltage transient spike in drain of power
MOSFET.
3. R506, R510, C509, C513, C514, R525, R531, C528, C525, and C527 are connected betweenhigh voltage output
connector and ground, the divided AC voltage is inverted DC voltage through D502, D503, D508, and D509.The sense
voltage feedback to VSEN (pin 6 of IC501) for an over voltage/over current condition during normal operation. R528,
R533 are current sense resistor, current sense signal feed back to Isense (pin 5 of IC501) for lamp “ON" detection.
4.3 I/F Board Circuit
4.2.1 Power Input
+5V is from the power board and supply for U101(LD1117AL-3.3V)、U105(TSUM56AL-1) and panel. +3.3V
output is generated from +5V through C101 and C103 filtering, and U101 outputs. +3.3V is used for U105
(MCU & Scaler: TSUM16AL). +1.8V output is generated from +3.3V through U102 outputs. +1.8V is only used
for U105.
4.2.2 MCU & Scaler(TSUM16AL)
The frequency of XTAL1 is 14.318MHz. U105 # 48 is defined as panel-enable. When the I/O port is high,
Q101 and Q103 are conducted. And then after C108 and C109 filtering, obtain the voltage of VLCD, which will
be connected to CN104. U105 # 85 is defined as CCFL-enable. When the I/O port is low, Q106 is pulled up
and the backlights are on; When the I/O port is high, Q106 is conducted and the backlights are off. U105 # 35
is defined as DET-VGA, connected with CN103 #5. U105 # 84 is a pin of hardware reset. U105 # 54-# 55,#
58-# 65, # 67-# 74, # 77-# 78 output LVDS digital data of 8 bit to panel control circuit through CN104. U105 #
86 generates a PWM waveform by regulating the duty to control the brightness of the backlights.
U103 is EEPROM used for saving EDID data, which is connected by SCL and SDA pins with # 31 and # 30
of TSUM56AL-1.
U106 is a flash memory, U106 # 2, # 1, # 6, # 5 are the communications with U105 # 37-# 40.
U108 is EEPROM used for saving user’s OSD setting. U108 is connected by SCL and SDA pin with # 44 and
# 43 of TSUM16AL.
4.2.3 VGA Input
Signal R, G, B input through CN103 #1, #2, #3, and C112, C113 and C114 filtering the high frequency
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noise. Signal HSYNC and VSYNC input through CN103 #13 and #14, and C125, R137, C126, R136 filtering.
Then the analog signal enters U105, and then U104 deals with it internally. In addition, TVS101, TVS102,
TVS103, TVS104 (the four are BAV99), ZD101, ZD105, ZD106, ZD107, ZD108(they are constant voltage
diode of 5V6) are ESD protector. Signal DDC-SCL inputs via CN103 #15, and then passes through ZD101 for
ESD protection, goes into EDID EEPROM IC U103. Signal DDC-SDA inputs via CN103 #12, and then passes
through ZD107 for ESD protection, goes into EDID EEPROM IC U103. CN103 #5 is defined as cable detect
pin, this detector realizes via R124 and U105 # 35,The PC-5V of U103 is supplied by PC via CN103 #9 with
D103 for ESD protection, or supplied by Monitor self via D103.U103 is an EEPROM IC, which is a kind of
memory and used for saving EDID data.
4.2.4 Button Control
Button “Key-Power” is defined as power on/off, which is connected to U105 # 90 through CN105 # 6.
Button “Key-2” is defined as two functions of selecting and adjustment, which is connected to U105 #94
through CN105 # 5.
Button “Key-Up” is defined as plus, which is connected to U105 # 95 through CN105 # 8.
Button “Key-Down” is defined as minus, which is connected to U105 # 99 through CN105 # 7.
Button “Key-1” is defined as two functions of menu and exit, which is connected to U105 # 89 through
CN105 # 4.
LED indicator on the front bezel is defined as follows:
a. When press button “Key-Power”, U105 # 91 is pulled down and U105 # 92 is pulled high, so Q102 is
conducted and the LED indicator is green.
b. When in power-saving mode, U105 # 91 is pulled high and U105 # 92 is pulled down, so Q105 is conducted
and the LED indicator is orange.
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VX1935wm-3
4.4 FACTORY PRESET TIMING TABLE
FH(KHz)
Sync
Total
FV(Hz)
Polarity
(Dot/Line)
31.469
+
800
640
96
48
70.086
−
449
350
2
60
IBM
31.469
−
800
640
96
48
640*400@70Hz
70.086
+
449
400
2
35
IBM
31.469
−
900
720
108
54
720*400@70Hz
70.087
+
449
400
2
35
24.700
−
800
640
96
48
50.000
−
494
480
2
8
VESA
31.469
−
800
640
96
40
640*480@60Hz
59.940
−
525
480
2
25
35.000
−
864
640
64
96
66.667
−
525
480
3
39
VESA
37.861
−
832
640
40
120
640*480@72Hz
72.809
−
520
480
3
20
VESA
37.500
−
840
640
64
120
640*480@75Hz
75.000
−
500
480
3
16
VESA
43.269
−
832
640
56
80
640*480@85Hz
85.008
−
509
480
3
25
VESA
35.156
+
1024
800
72
128
800*600@56Hz
56.250
+
625
600
2
22
VESA
37.879
+
1056
800
128
88
800*600@60Hz
60.317
+
628
600
4
23
VESA
48.077
+
1040
800
120
64
800*600@72Hz
72.188
+
666
600
6
23
VESA
46.875
+
1056
800
80
160
800*600@75Hz
75.000
+
625
600
3
21
VESA
53.674
+
1048
800
64
152
800*600@85Hz
85.061
+
631
600
3
27
MAC
49.725
−
1152
832
64
224
832*624@75Hz
74.550
−
667
632
3
39
VESA
48.363
−
1344
1024
136
160
1024*768@60Hz
60.004
−
806
768
6
29
VESA
56.476
−
1328
1024
136
144
1024*768@70Hz
70.069
−
806
768
6
29
VESA
60.023
+
1312
1024
96
176
1024*768@75Hz
75.029
+
800
768
3
28
TIMING
640*350@70Hz
640*480@50Hz
640*480@67Hz
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Active
Sync Width Back Porch
(Dot/Line) (Dot/Line)
(Dot/Line)
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Pixel
Freq.(MHz)
25.175
25.175
28.322
19.760
25.175
30.240
31.500
31.500
36.000
36.000
40.000
50.000
49.500
56.250
57.283
65.000
75.000
78.750
VX1935wm-3
VESA
68.677
+
1376
1024
96
208
1024*768@85Hz
84.997
+
808
768
3
36
57.700
−
1360
1024
136
144
72.125
−
800
768
6
26
VESA
67.500
+
1600
1152
128
256
1152*864@75Hz
75.000
+
900
864
3
32
MAC
68.681
−
1456
1152
128
144
1152*870@75Hz
75.062
−
915
870
3
39
VESA
60.000
+
1800
1280
112
312
1280*960@60Hz
60.000
+
1000
960
3
36
75.000
+
1800
1280
112
312
75.000
+
1000
960
3
36
VESA
63.981
+
1688
1280
112
248
1280*1024@60Hz
60.020
+
1066
1024
3
38
VESA
79.976
+
1688
1280
144
248
1280*1024@75Hz
75.025
+
1066
1024
3
38
75.025
+
1066
1024
3
38
1024*768@72Hz
1280*960@75Hz
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94.500
78.472
108.000
100.000
108.000
130.000
108.000
135.000
VX1935wm-3
4.5
Power On/Off Sequence
4.5.1 Hardware Power ON
When power cord is plugged into AC socket, SMPS starts work and provides U105 with VCC5V. When
VCC5V inputs, U105 resets circuit active, sets U105 all registers to preset modes, and then monitor goes into
stand-by mode. That means hardware power on has been completed.
4.5.2 Software Power ON/OFF
When press power key, U105 # 90 recieves low pulse,and then U105 will do the power on/off.
-
If Power ON, U105 # 91(LED_Green) will send out Low potential, and then LED green on.
If Power OFF, U105 # 91(LED_Green) will send out High potential, and then LED Off.
The Panel_Vcc, Backlight_En, CLK/DATA output to panel will follow the following sequency.
T1 (ms) T2 (ms) T3 (ms)
0.1~10
ViewSonic Corporation
0.5~10
>200
T4 (ms)
T5 (ms)
T6 (ms)
T7 (ms)
>100
0~50
0.1~25
>1000
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VX1935wm-3
AC Outlet Pin Assignment
Pin
Symbol
Description
1
L
Live
2
N
Neutral
3
E
GND
3
4.6
1
2
P801
4.7
Inner Connector Pin Assignment
4.7.1 CN501, CN502, CN503, CN504 (Connect to Panel Backlight, SM02B-BHSS-1-TB or equivalent)
Pin
Symbol
Description
1
H.V.
High voltage for lamp
2
L.V.
Low voltage for lamp
4.7.2 CN101 (Power BD to Interface BD)
Pin No.
Symbol
Description
1
VCC5V
+5.1V INPUT
2
VCC5V
+5.1V INPUT
3
GND
4
ON/OFF
5
BRIGHTNESS
6
GND
Ground
7
VOL
Volume control input
8
MUTE
GND
CCFL on/off control
Panel luminance control (CCFL brightness)
Mute control input
4.7.3 CN105 (Interface BD to Keypad)
Pin
No.
Symbol
Description
1
LED_ GREEN
Orange LED lighting control
2
LED_ ORANGE
Green LED lighting control
3
GND
Ground
4
KEY_POWER
DC power on/off control,
5
KEY_UP&▲
OSD “▲” control to adjust value to increase,
6
KEY_DOWN&2
Select control and auto adjustment control,
7
GND
OSD “▼” control to adjust value to decrease
8
KEY_1
OSD menu and exit
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4.7.4 CN104 (Connect I/F BD to panel, FI-X30S-H or Equivalent)
Pin No.
Symbol
Function
1
RXO0-
minus signal of odd channel 0(LVDS)
2
RXO0+
plus signal of odd channel 0(LVDS)
3
RXO1-
minus signal of odd channel 1(LVDS)
4
RXO1+
plus signal of odd channel 1(LVDS)
5
RXO2-
minus signal of odd channel 2(LVDS)
6
RXO2+
plus signal of odd channel 2(LVDS)
7
GND
Ground
8
RXOC-
minus signal of odd clock channel (LVDS)
9
RXOC+
plus signal of odd clock channel (LVDS)
10
RXO3-
minus signal of odd channel 3(LVDS)
11
RXO3+
plus signal of odd channel 3(LVDS)
12
RXE0-
minus signal of even channel 0(LVDS)
13
RXE0+
plus signal of even channel 0(LVDS)
14
GND
Ground
15
RXE1-
minus signal of even channel 1(LVDS)
16
RXE1+
plus signal of even channel 1(LVDS)
17
GND
Ground
18
RXE2-
minus signal of even channel 2(LVDS)
19
RXE2+
plus signal of even channel 2(LVDS)
20
RXEC-
minus signal of even clock channel (LVDS)
21
RXEC+
plus signal of even clock channel (LVDS)
22
RXE3-
minus signal of even channel 3(LVDS)
23
RXE3+
plus signal of even channel 3(LVDS)
24
GND
Ground
25
GND
Ground
26
GND
Ground or Open
27
GND
Ground
28
VCC
Power supply (5.0 V)
29
VCC
Power supply (5.0 V)
30
VCC
Power supply (5.0 V)
4.7.5 CN103 (D-SUB Connector)
Pin
Symbol
1
Red video input
6
Red GND
11
GND
2
Green video input
7
Green GND
12
Serial data (SDA)
3
Blue video input
8
Blue GND
13
H / H+V SYNC
4
GND
9
+5V(from PC)
14
VSYNC
5
Cable Detect
10
GND
15
Data clock line (SCL)
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Pin
Symbol
Pin
Symbol
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VX1935wm-3
4.8
Key Parts Pin Assignment
4.8.1 IC802 (NCP1337, Power Control IC)
Pin
Symbol
I/O
Description
1
BO
I
Brown−out and external triggering
2
FB
I
Sets the peak current setpoint
3
CS
I
Current sense input and overpower compensation adjustment
4
GND
5
DRV
O
Output driver
6
Vcc
I
IC supply
7
NC
N/A
N/A
8
HV
I
High−voltage pin
IC ground
4.8.2 IC501 (OZ9938GN, CCFL inverter controller IC)
Pin No.
Symbol
I/O
Description
1
DRV1
O
Drive output
2
VDDA
I
Supply voltage input
3
TIMER
I
Timing capacitor to set striking time and shut down delay time
4
DIM
I
5
ISEN
I
Current sense feedback
6
VSEN
I
Voltage sense feedback
7
OVPT
I
Over-voltage/over-current protection threshold setting pin
8
NC
ON/OFF control of IC
Analog dimming or Internal LPWM dimming or external PWM pulse input
for dimming function
9
NC
10
ENC
I
11
LCT
I
12
SSTCMP
I
Capacitor for soft start time and loop compensation
13
CT
I
Timing resistor and capacitor for operation and striking frequency
14
GNDA
15
DRV2
16
PGND
Timing capacitor to set internal PWM dimming frequency and also a pin for
analog dimming selection
Ground for analog signals
O
Drive output
Ground for power paths
4.8.3 U105(TSUM56AL-1)
Pin
Symbol
I/O
Description
1
NC
Not connected
2
GND
Ground
3
NC
Not connected
4
NC
Not connected
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VX1935wm-3
5
GND
Ground
6
NC
Not connected
7
NC
Not connected
8
AVDD_DC
9
NC
Not connected
10
NC
Not connected
11
GND
Ground
12
NC
Not connected
13
NC
Not connected
14
AVDD_DC
15
REXT
16
AVDD_PLL
I
PLL Power
17
BIN0M
I
Reference ground for analog blue input
18
BIN0P
I
Analog blue input
19
GIN0M
I
Reference ground for analog green input
20
GIN0P
I
Analog green input
21
SOGIN0
I
Sync-on-green input
22
RIN0M
I
Reference ground for analog red input
23
RIN0P
I
Analog red input
24
AVDD_ADC
I
ADC Power
25
REFM
Internal ADC bottom de-coupling pin
26
REFP
Internal ADC top de-coupling pin
27
HSYNC0
I
Analog HSYNC input
28
VSYNC0
I
Analog VSYNC input
29
GND
30
DDCA_SDA/RS232_TX
I/O
31
DDCA_SCL/RS232_RX
I/O
32
VDDP
33
GND
34
VDDC
35
GPIO_P15/PWM0
36
NC
37
SDO
I
SPI Flash Serial Data Output
38
SCZ
O
SPI Flash Chip Select
39
SCK
O
SPI Flash Serial Clock
40
SDI
O
SPI Flash Serial Data Input
41
NC
Not Connected
42
NC
Not Connected
ViewSonic Corporation
I
I
ADC Power
ADC Power
External resistor 390 ohm to AVDD_ADC
Ground
I
DDC Data for Analog Interface; 4mA driving strength/UART
Transmitter/GPIO
DDC Clock for Analog Interface/UART Receiver/GPIO
Digital Output Power
Ground
I
I/O
Digital Core Power
General Purpose Input/Output; 4mA driving strength/Pulse Width
Modulation Output; 4mA driving strength
Not Connected
Confidential - Do Not Copy
30
VX1935wm-3
General Purpose Input/Output; 4mA driving strength/I2C Master
43
GPIO_P11/I2C_MDA
I/O
44
GPIO_P10/I2C_MCL
I/O
45
46
47
NC
NC
NC
48
GPIO_P27/PWM1
49
VDDP
50
GND
51
VDDC
I
Digital Core Power
52
MODE[0]
I
Chip Configuration Input
53
MODE[1]
I
Chip Configuration Input
54
LVA3P
O
A-Link Positive LVDS Differential Data Output
55
LVA3M
O
A-Link Negative LVDS Differential Data Output
56
VDDP
I
Digital Output Power
57
GND
58
LVACKP
O
A-Link Positive LVDS Differential Clock Output
59
LVACKM
O
A-Link Negative LVDS Differential Clock Output
60
LVA2P
O
A-Link Positive LVDS Differential Data Output
61
LVA2M
O
A-Link Negative LVDS Differential Data Output
62
LVA1P
O
A-Link Positive LVDS Differential Data Output
63
LVA1M
O
A-Link Negative LVDS Differential Data Output
64
LVA0P
O
A-Link Positive LVDS Differential Data Output
65
LVA0M
O
A-Link Negative LVDS Differential Data Output
66
VDDC
I
Digital Core Power
67
LVB3P
O
B-Link Positive LVDS Differential Data Output
68
LVB3M
O
B-Link Negative LVDS Differential Data Output
69
LVBCKP
O
B-Link Positive LVDS Differential Clock Output
70
LVBCKM
O
B-Link Negative LVDS Differential Clock Output
71
LVB2P
O
B-Link Positive LVDS Differential Data Output
72
LVB2M
O
B-Link Negative LVDS Differential Data Output
73
LVB1P
O
B-Link Positive LVDS Differential Data Output
74
LVB1M
O
B-Link Negative LVDS Differential Data Output
75
VDDP
I
Digital Output Power
76
GND
77
LVB0P
O
B-Link Positive LVDS Differential Data Output
78
LVB0M
O
B-Link Negative LVDS Differential Data Output
79
GND
Ground
80
BYPASS
For External Bypass Capacitor
ViewSonic Corporation
Data
General Purpose Input/Output; 4mA driving strength/I2C Master
Clock
Not Connected
Not connected
Not connected
I/O
I
General Purpose Input/Output; 4mA driving strength/Pulse Width
Modulation Output; 4mA driving strength
Digital Output Power
Ground
Ground
Ground
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31
VX1935wm-3
81
NC
82
VDDC
83
GND
84
RST
85
GPIO_P12
I/O
86
PWM1/GPIO_P25
I/O
87
RSTN
88
GPIO_P00/SAR1
I/O
89
GPIO_P01/SAR2
I/O
90
GPIO_P02/SAR3
Not connected
I
Digital Core Power
Ground
I
I
I/O
Chip Reset; High Reset
General Purpose Input/Output; 4mA driving strength
Pulse Width Modulation Output; 4mA driving strength/General
Purpose Input/Output; 4mA driving strength
Chip Reset; Low Reset
General Purpose Input/Output; 4mA driving strength/SAR ADC
Input
General Purpose Input/Output; 4mA driving strength/SAR ADC
I
t
General Purpose Input/Output; 4mA driving strength/SAR ADC
91
GPIO_P06
I/O
Input
General Purpose Input/Output; 6/12mA programmable driving
92
GPIO_P07
I/O
t
th
General Purpose Input/Output; 6/12mA programmable driving
t
th
Pulse Width Modulation Output; 4mA driving strength/General
93
PWM0/GPIO_P26
I/O
94
GPIO_P13
I/O
General Purpose Input/Output; 4mA driving strength
95
GPIO_P14
I/O
General Purpose Input/Output; 4mA driving strength
96
XIN
I
Crystal Oscillator Input
97
XOUT
O
Crystal Oscillator Output
98
AVDD_MPLL
I
MPLL Power
99
GPIO_P16/PWM2
100
NC
ViewSonic Corporation
I/O
Purpose Input/Output; 4mA driving strength
General Purpose Input/Output; 4mA driving strength/
Pulse Width Modulation Output; 4mA driving strength
Not connected
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32
VX1935wm-3
5. Adjustment Procedure
5.1 Key Function Description
CONTROL KEY
KEYS FUNCTION
[AUTO] [2]
By pressing [AUTO] key, “Auto Image Adjust” is performed
[MENU] [1]
By pressing [MENU] key, Main menu display
A. When “MENU OSD” display, press these keys to change the contents of an
adjustment item, or change an adjustment value
[▼] [▲]
B. When “MENU OSD” is un-display, press these keys to change brightness and
contrast
[POWER]
5.2
Power on or power off the monitor
Hot Key Operation
Hot Key Function
Item
Function Detail
Recall Contrast or Brightness while in the Contrast or Brightness adjustment;
[▲] + [▼]
Recall both 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)
White Balance (Not shown on user’s guide)
[1] + [▼]
Power Lock
[1] + [▲]
OSD Lock
[▼] + [▲]+ [ ]
Enter Factory Mode
Remark: All the function above are only available while OSD off
5.3
OSD Control
5.3.1 OSD table
Layer 1
Layer 2
Layer 3
Auto Image Adjust
Contrast/Brightness
Audio
Contrast (+ / -)
Brightness (+ / -)
Volume
Volume (+ / -)
Mute
On/Off
sRGB
9300K
6500K
Color Adjust
5400K
Red (+ / -)
User Color
Green (+ / -)
Blue (+ / -)
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VX1935wm-3
Information
H Position (+ / -)
H/V Position
Manual Image Adjust
V Position (+ / -)
H Size
+/-
Fine Tune
+/-
Sharpness
+/English
French
German
Italian
Language Select
Spanish
Finnish
Japanese
Setup Menu
Simplified Chinese
Traditional Chinese
Resolution Notice
On/Off
H Position (+ / -)
OSD Position
V Position (+ / -)
OSD Time Out
OSD Background
On/Off
Memory Recall
5.3.2 OSD lock Menu function
OSD Lock Menu Function Check
Item
Method
Phenomenon
Press any of buttons"1", "▼",
Activate OSD lock
[1] + [▲] 10S
"▲", "2" will appear "OSD Locked"
3s
Deactivate OSD lock:
[1] + [▲] 10S(again)
NOTICE:
When the OSD is locked will lock all functions.
Status bar indicating OSD Lock or Unlock is in progress and when complete it will indicate “OSD
Locked”
OSD Lock should not lock Power Button and Power Lock function
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VX1935wm-3
5.3.3 Power lock Menu function
Power Lock Menu Function Check
Item
Method
Phenomenon
Can not turn off the LCD;
Press the power button will
appear "Power Button Locked"
Activate Power Lock
OSD 3s;
[1] + [▼] 10S
LCD would automatically turn
back "On" when power is restored
after a power failure
Deactivate Power Lock
[1] + [▼] 10S(again)
NOTICE:
Status bar indicating Power Button lock or unlock is in progress and when complete it will indicate
“Power Button Locked”
Power should only be lockable in the “On State”
5.3.4 Resolution notice function
Resolution Notice Menu
Item
Method
Phenomenon
Resolution Notice OSD should show
Activate
Resolution
Notice Menu
on
screen
after
changing
to
------
non-native mode for 30 sec,
And it should disappear after 10s
or by pushing button [1] or [2]
Deactivate
Push button [2] under Resolution
Resolution Notice Menu
Notice OSD, select Disable
-------
5.3.5 Factory Mode Introduction
When input the signal, press “power key” to turn off the monitor. Press” [▼] +[▲] +[ ] “at the same time so
as to enter factory mode. After power on, press ‘’Menu[1]’’ key, you can see the Factory menu.
INL-V0
: Currently using panel model name
V3 060922
: Currently using firmware version information.
Auto Color
: Automatically calibrate chip ADC parameter by using chip internal DAC
Color Temperature : The R, G, B of 9300K and 6500K and 5400K and User Mode
Colors are all generated from scaling back end.
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VX1935wm-3
5.4
Burn-in pattern
If it is a new monitor, and in factory mode, if no VGA signal input, Burn-in pattern will self generate
automatically. Burn in patterns are: full Red, Green, Blue, White and Black. You can not escape from
Burn-in pattern until plug in VGA Cable or press the power key to turn the monitor off and then turn it on.
5.5
Auto Color (Automatically calibrate chip ADC parameter by using chip
internal DAC)
If it is a new-built set and it is first time to do the “auto color”, please confirm the following steps:
-Connect the VGA cable with the standard video pattern generator and display 5-mosic pattern on the monitor.
- Press “Power” to power off the monitor.
- Press” [▼] +[▲] +[ ] “simultaneously to enter factory mode.
- Press ‘’Menu[1]’’, then press ‘’Auto[2]’’ to execute Auto color item.
- After the “Auto Color” process finished, please press “Power” to restart monitor.
5.6
EDID (Rewrite EDID data to EEPROM)
If we need to rewrite the EEPROM data, please confirm the following steps.
1. Plug in VGA Cable; we can rewrite the EDID data to EEPROM by using “EDID Rewrite” program.
2. If the “EDID Rewrite” process finished, please pull out VGA cable and press ‘’2’’+’’▲’’ at the same time.
3. Pull out AC power cable or press power key to restart.
5.7
Upload firmware to MCU via VGA Cable
5.7.1 Connect ISP board between monitor and PC as below configure
Service
cable
ISP Board
ViewSonic Corporation
D-Sub
D-SUB
Port 25pin
Print Port
Insert to Print
LCD Monitor
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VX1935wm-3
5.7.2 Using mStar ISP Tool Update FW:
(1). Select “Read”, Choose the corresponding firmware, load to MCU.
(2). Select “Connect”, auto connect for ISP.
(3). Select “Run”, start ISP.
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VX1935wm-3
(4). When the picture show “Verify OK”, ISP finished.
5.7.3 After repair, to ensure the quality you should do the following test and
adjustment
Item
Content
Equipment
1.Signal is set as 1280x1024@60Hz
Test OSD function
2. LCM button are from left to right, checking whether each single
function key and compound function key can be worked.
Chroma
Signal Generator
1. Set input mode to 1280x1024@60Hz
Contrast Check
2. Set Pattern to 32 gray shades
Chroma
3. Set contrast to the max. The brightest 6~8 shades brightness cannot
Signal Generator
be distinguished.
1. Do “Auto color” at 640 x 480@60Hz, 5-Mosic pattern
2. Measure color temperature, check it complies with the following
Color Temperature
temperature:
5400K x=0.335 +/- 0.02, y=0.350 +/- 0.02
6500K x=0.313 +/- 0.02, y=0.329 +/- 0.02
Chroma Signal
Generator and color
analyzer
9300K x=0.283 +/- 0.02, y=0.298 +/- 0.02
1. Use Chroma Pattern Generator to make sequence.
VESA (640x480 800x600 1024x768 1280x1024), MAC 832x624
Modes switching
check
DOS (640x350 720x400), the detail supported modes and power
saving signal.
2. Confirm the above timing modes must be full screen and the
Chroma Signal
Generator
picture must be normal.
3. LED is Orange at power saving mode.
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VX1935wm-3
Y measurement at
default setting
1. Set brightness to default value 100 and contrast to default value
Chroma Signal
Generator and Color
70 at 6500K
2. At full white patter, Measure Y, which should be ≥ 250cd/m²
Analyzer
1. Mode: 1280x1024@60Hz
Panel Flicker
check
2. Set Brightness& contrast to default value
Equipment::
3. Do “Auto Image Adjust”
Chroma Signal
4. Shut down PC to check whether there’s glitter on the center of the
Generator & PC
picture.
Power saving
1.
Mode: 1440x900@60Hz
2.
Pattern: full white
3.
Brightness: Max.
Chroma signal
4.
Contrast: Default
generator and Power
5.
Check power consumption at each modes
meter
State
Normal
Power Consumption
≤ 42W
LED color
Blue
Stand By
< 2W
Orange
Power Key Off
<1W
No
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AC input: 230V/50Hz
VX1935wm-3
Packing For Shipping And Disassembly Procedure
Packing For Shipping
1.
Packing Procedure
1.1. Paste protection film to protect the monitor. (Figure 1)
1.2. Put the monitor in the PE bag and seal the bag with tape. (Figure 2)
Figure 1
Figure 2
1.3. Put the cushions on the monitor.
1.4. Place the monitor into the carton and then put all the accessories into the carton. At last, close the carton
and seal it with tape. (Figure 3)
BASE
DVI CABLE
AUDIO
MONITOR
Figure 3
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VX1935wm-3
Disassembly Procedure
BASE
HINGE COVER
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VX1935wm-3
STAND
FRONT COVER
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VX1935wm-3
BACK COVER
PANEL
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VX1935wm-3
CHASSIS
P/I BOARD
I/F BOARD
KEYPAD BOARD
SPEAKER
LVDS
ViewSonic Corporation
KEY-POWER CABLE
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VX1935wm-3
6. Troubleshooting Flow Chart
1.
Common Acknowledge
If you change the interface board, be sure that the U103, U105, U106 and U108 these three components also
changed to the new I/F board because there was program inside. If not, please re-write EDID and upload
firmware into U106 via VGA Cable.
If you adjust clock and phase, please do it at the condition of Windows shut down pattern.
If you confirm the R.G.B. color is normal or not, please do it under 16-grey scalar pattern.
This LCM is analog interface. So if the entire screen is an abnormal color that means the problem happen in
the analog circuit part, if only some scale appears abnormal color that stand the problem happen in the digital
circuit part.
If you check the H/V position, please use the crosshatch pattern.
This LCM support more than 30 timing modes, if the input timing mode is out of specification, the picture may
appears abnormally.
If brightness uneven, repairs Inverter circuit or change a new panel.
If you find the vertical line or horizontal line lost on the screen, please change panel.
If you find the speaker don’t working, please don’t plug in audio cable, unless change new speaker.
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VX1935wm-3
2.
No Power & Power LED Off
No power
Check primary
Check circuit
Check IC802,
rectifier voltage
if short
C804, T801,
Check F801, P801,
RT,801,D801
Check pin6 of IC802
CheckC810,D803,C807,
voltage about 12V
Check pin2 of IC802
Check primary OVP, OLP
voltage about 2V
and secondary feedback,
Check pin1 of IC802
Check R811, R810,
voltage is below 1V
R809, R808,R814
END
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VX1935wm-3
3.
DC output voltage is unstable
Unstable power
Check sampling
Check R822, R823,
Circuit
R824
Change R822, R823,
R824
Check the R pin
Check the C pin
voltage of IC803
voltage of IC803 if
Change
about 2.5V
3V
IC803
Check R819, R820
Check pin2 of
Check R818, D804, C807 if
IC802 voltage
short
is 3V
Change R818,
D804, C807
Check pin1 of
Change R808, R 809,
IC802 voltage
R810, R 811, R815,
below 1V
END
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VX1935wm-3
4.
Output power is unstable
Unstable power
Check sampling
Check R810,
Circuit
R811, R818
Change R810, R811,
R818
Check the R pin
Check the C pin
voltage of IC803
voltage of IC803
Change
about 2.5V
if 3V
IC803
Check R809, R808, R814,
D809
Check pin1 of
Check D806, C815 if
IC802 voltage
short
is 5.8V
Change
D806, C815
Check pin3 of
Change R801, R805,
IC802 voltage
R822, R823, R817
about 1V
END
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VX1935wm-3
5.
Backlight can’t be turned on
Black screen
NG
Check power
supply:pin 1,2 of
CN101
Power fail
YES
NG
Check FB102,FB103,
FB105,FB106
Check power supply
for U105
YES
NG
Check reset (pin84) of
U105
Check C144,R172
YES
NG
Check crystal (pin 96,97)
waveform of U105
Check
X101,C153,C154
YES
Check CCFLEnable(pin 85)
of U105
NG
YES
YES
Check pin4 of
CN101
NG
Check R167,Q106,
R108,R110
U105 FAIL
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Inverter Fail
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VX1935wm-3
6.
Black Screen and backlight turn on
Black Screen
NG
Check Power Supply:
Pin 1, 2 of CN101
Power Fail
OK
Check Power:
Pin 2 of U101 and Pin 2
of U102
NG
U101, U102 Fail
OK
Check Reset Waveform
(Pin 84 of U105)
NG
Check C144 and
R172
NG
Check X101,
C153, C154
OK
Check Crystal Waveform
(Pin 96,97 of U105)
OK
U105
(TSUM16AL) Fail
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VX1935wm-3
7.
White Screen
White screen
OK
LVDS Cable
Reinsert
Workmanship
NG
OK
Change
LVDSCable
LVDS cable NG
NG
OK
OK
Check VLCD
is 5V
Check LVDS
signal
NG
Panel Fail
NG
Check Panel-Enable of
U105(pin48)
OK
U105 Fail
NG
Check
Q101,Q103,Q110,
C108,
C109
END
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VX1935wm-3
8.
Bad Screen
Bad Screen
OK
LVDS Cable
Reinsert
Workmanship
NG
OK
Change LVDS
Cable
LVDS Cable NG
NG
NG
Check Crystal:
pin96,97 of U105
CheckX101, C153,
C154
OK
Check the pins of
U105
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VX1935wm-3
7. Recommended Spare Parts List
RECOMMENDED SPARE PARTS LIST (VX1935wm-3)
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
ViewSonic Model Number: VS11444
Serial No. Prefix: QCX
Accessories:
PC Board
Assembly:
Cabinets:
Cables:
Electronic
Components:
Packing Material:
Plastics:
Description
Power Cord - 10A/250V BLK 6FT CHINA
Kit Accessory (VX1935)
Interface Board
Key Board
PCBA,P/I BOARD, LP1909-612
Cover - Left Hinge
Cover - Right Hinge
Base Assembly
Front Panel
Back Cover
CABLE,D-SUB 15P MALE 6FT BLACK/BLUE,SZ40
Audio Cable - 1P 6FT BLACK/GREEN CP03B06P0
Video Cable - DVI-D 18+1P MALE 6FT
Flat Cable - LVDS FFC 30P 158mm, ROHS
Wire - 8P 200mm UL1571#28 ROHS
LCD PANEL 19" MT190AW01-V0-G1,AM19000040
Speaker - 2.0W 8Ω 370mm, R/G/B W/CASE
EPE+PE Bag - L540xW500xT0.05mm
Craft Box
Foam - EPS Left
Foam - EPS Right
Foam - EPS Top
BAG,PLASTIC - W(545+165)xL1100xT0.05mm
Generic Foam Set
Genric Box
EPE+PE Bag - W330xL300xT0.3mm
Pedestal - (Stand)
ECR/ECN
ViewSonic P/N
A-00005255
A-00008065
B-00008169
B-00008170
B-00008171
C-00008187
C-00008188
C-00008189
C-00008190
C-00008191
CB-00005254
CB-00008002
CB-00008070
CB-00008071
CB-00008072
E-00008016
E-00008137
P-00008032
P-00008177
P-00008178
P-00008179
P-00008180
P-00008181
P-00001347
P-00002515
P-00008182
PL-00008048
Ref. P/N
453070800170R
703000003600R
790741300600R
790741500000R
790741400600R
501020210410R
501020210510R
714020007910R
714030007910R
714050007910R
453010100100R
453030300120R
453030300180R
430303000690R
430300800800R
631102090600R
618100200120R
506120302400R
506020012500R
506040010100R
506040010110R
506040010111R
506120006200R
30833
20653
506120303000R
714010007910R
Location
Rev: 1a
Universal number#
Remark 1: Above listed items are examples, supplier can expand the rows to add more necessary items.
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 eliminate repeated cross checks of each item between this version and prior versions.
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VX1935wm-3
ViewSonic Model Number: VS11444
Rev: 1a
Serial No. Prefix: QCX
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
ViewSonic P/N
N/A
N/A
P-00008032
P-00008181
P-00008182
N/A
N/A
P-00008177
P-00008178
P-00008179
P-00008180
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
CB-00005254
CB-00008002
CB-00008070
A-00005255
N/A
N/A
A-00008065
N/A
N/A
N/A
N/A
N/A
N/A
N/A
C-00008187
C-00008188
E-00008137
PL-00008048
C-00008189
C-00008190
C-00008191
N/A
PL-00008048
N/A
N/A
N/A
N/A
N/A
N/A
N/A
C-00008189
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
C-00008190
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Ref. P/N
506380002100R
506380001800R
506120302400R
506120006200R
506120303000R
506431003100R
506431000300R
506020012500R
506040010100R
506040010110R
506040010111R
506150002630R
506039005600R
506039005000R
506038004800R
506440002600R
506250011100R
506390210400R
506440002300R
506440003000R
506390000600R
506091000500R
506390000500R
453010100100R
453030300120R
453030300180R
453070800170R
506092001400R
506030200200R
703000003600R
714078660000R
506440002400R
714078660000R
509116608510R
509112308100R
509112310100R
503040000310R
501020210410R
501020210510R
618100200120R
714010007910R
714020007910R
714030007910R
714050007910R
714078661000R
714010007910R
501260203510R
501260203610R
501040200410R
501040200510R
502060003410R
509112608100R
509116618100R
714020007910R
501240204910R
501020210310R
502170000310R
509112606100R
503060002410R
503020004010R
503020002700R
506431003500R
506431003510R
506431003520R
506431003530R
714030007910R
501010208310R
501030205010R
501120104910R
506102000400R
506102000300R
506431003400R
506431003410R
506431003420R
ViewSonic Corporation
BOM LIST (VX1935wm-3)
Description
TAPE,WRAPPING TYPE(VIEWSONIC),50mmx75M,L
TAPE,WRAPPING TYPE,48mmx50M ROHS LE1915
BAG,EPE+PE,L540xW500xT0.05mm,PRINTED, LE
BAG,PLASTIC,W(545+165)xL1100xT0.05mm,LE1
BAG,EPE+PE,W330xL300xT0.3mm,CYCLE PRINTE
FILM,PROTECTION,UNPRINTED,430x280x0.1mm,
FILM,PE 500mmx900M ROHS
CARTON,VIEWSONIC(VX1935), LP1909
CUSHION,EPS-L,VX1935, LP1909
CUSHION,EPS-R,VX1935, LP1909
CUSHION,EPS-TOP,VX1935, LP1909
PALLET,L1150xW1110xH120mm,LP1909
CORNER PAPER,2035x50x50xT3mm,LP1702
CORNER PAPER,870x50x50xT5mm,ROHS LE1918
CARDBOARD,L1150xW1110xT4mm ROHS LP1909
LABEL,BLANK,210x65mm,LE1709(PALLET)
LBL,AGENCY, VX1935wm LP1909
LABEL,CARTON(5ms),L89xW58 LE1941
LABEL,BLANK,76.2x76.2mm,LE1709(UPC)
LABEL,BLANK,35x10mm, LE1709 ROHS
LABEL,HI-POT PASS, LE1709
LABEL,WARRANTY, LE1709
LABEL,QC-PASS, LE1709
CABLE,D-SUB 15P MALE 6FT BLACK/BLUE,SZ40
CABLE,AUDIO 1P 6FT BLACK/GREEN CP03B06P0
CABLE,DVI-D 18+1P MALE 6FT PC99(BLACK)SA
PWRCORD 10A/250V BLK 6FT CHINA.RVV 3Gx0.
CARD,WARRANTY, LE1709
CARD,AFTER SERVICE, LE1709,L130xW80
KIT,ACCESSORY,LP1909(VX1935)
ASSY,FINAL(B,V0/G1&2&3),W/SPK,LP1909-6I2
LABEL,BLANK,50x25mm,LE1709(S/N)
ASSY,FINAL(B,V0/G1&2&3),W/SPK,LP1909-6I2
SCREW,P,CROSS,M4*8,BLACK,NL(NYLOK)
SCREW,P,CROSS,T.T-3*8,Zn ROHS REV:A
SCREW,P,CROSS,T.T-3*10,Zn
RUBBER,COVER(B), LE1534
COVER,HINGE-L, LP1909
COVER,HINGE-R, LP1909
SPEAKER 2.0W 8Ω 370mm, R/G/B W/CASE
ASSY,STAND, LP1909
ASSY,BASE,VX1935, LP1909
ASSY,BEZEL, LP1909
ASSY,BACK COVER, LP1909
ASSY,PANEL(V0/G1&2&3),W/SPK,LP1909-6I2
ASSY,STAND, LP1909
STAND,FRONT, LP1909
STAND,REAR, LP1909
CLIP,CABLE,UP, LP1909
CLIP,CABLE,DOWN, LP1909
HINGE, LP1909
SCREW,P,CROSS,T.T-4*8,Zn ROHS
SCREW,P,CROSS,M4*18,Zn ROHS
ASSY,BASE,VX1935, LP1909
BASE, LP1909
COVER,BASE, LP1909
PLATE,BASE, LP1909
SCREW,P,CROSS,T.T-4*6,Zn
GASKET,EMI,W8xH12xL12mm(TWO-SIDED ADHESI
RUBBER,FOOT,FRONT, LP1909
RUBBER,FOOT,L14.8*W9.6*T3.5mm,ROHS LE171
FILM-1,PROTECTION,FOR BASE LP1909
FILM-2,PROTECTION,FOR BASE LP1909
FILM-3,PROTECTION,FOR BASE LP1909
FILM-4,PROTECTION,FOR BASE LP1909
ASSY,BEZEL, LP1909
BEZEL, LP1909
BUTTON,FUNCTION KEY, LP1909
LENS, LP1909
LOGO PLATE,VIEWSONIC, LE1709(THREE BIRDS
LOGO PLATE,VIEWSONIC, LE1709
FILM,PROTECTION,FOR BEZEL-TOP LP1909
FILM,PROTECTION,FOR BEZEL-MIDDLE LP1909
FILM,PROTECTION,FOR BEZEL-BOTTOM LP1909
Location
Confidential - Do Not Copy
54
Universal number#
Q'ty
0.513
1.6
100
100
100
100
0.3
100
100
100
100
1.389
5.556
5.556
3.57
3.57
100
100
100
200
100
100
100
100
100
100
100
100
100
100
100
100
400
200
100
400
100
100
100
100
100
100
100
100
100
100
100
100
100
200
100
100
100
100
300
100
100
400
100
100
100
100
100
100
100
100
100
100
200
100
VX1935wm-3
Item
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
ViewSonic P/N
N/A
C-00008191
N/A
N/A
N/A
HW-00005270
N/A
HW-00005269
N/A
E-00008016
N/A
N/A
B-00008169
B-00008170
B-00008171
CB-00008071
CB-00008072
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Ref. P/N
506390500100R
714050007910R
501020210210R
506430300003R
714078661000R
509000000700R
509146304200R
509146305300R
509146306102R
631102090600R
631102090610R
631102090720R
790741300600R
790741500000R
790741400600R
430303000690R
430300800800R
701000002300R
701000002300R
502090304510R
502080000110R
509116606510R
505040503100R
505040503400R
ViewSonic Corporation
Description
LABEL,ENERGY STAR, LE1709
ASSY,BACK COVER, LP1909
COVER,BACK, LP1909
FILM,PET,L115xW30xT0.05mm, LE1741
ASSY,PANEL(V0/G1&2&3),W/SPK,LP1909-6I2
BOLT,#4-40x11.8,Ni FOR D-SUB/DVI CONN.RO
SCREW,P,CROSS,W/WAS,M3*4,Zn-Cc,ROHS
SCREW,PW,CROSS,W/WAS,M3*5,NI
SCREW,P,CROSS W/W-SPR,M3*6,Zn,ROHS
LCD PANEL 19" MT190AW01-V0,AM19000040, Main Source
LCD PANEL 19" MT190AW01-V0,AM19000040, 3nd Source
LCD PANEL 19" MT190AW01-V0,AM19000040, 2nd Source
PCBA,I/F BOARD, LP1909-612
PCBA,KEYPAD BOARD, LP1909
PCBA,P/I BOARD, LP1909-612
HRN LVDS FFC 30P 158mm, ROHS
HRN ASS'Y 8P 200mm UL1571#28 ROHS
ASSY,CHASSIS, LP1909
ASSY,CHASSIS, LP1909
CHASSIS, LP1909
SUPPORT,HINGE, LP1909
SCREW,P,CROSS,M4*6,BLACK,NL ROHS (NYLOK)
INSULATOR,PP,22x20x12X0.3mm,GLUE(3M), LE
INSULATOR,PP,10x15x10X0.3mm,GLUE(3M), LE
Location
Confidential - Do Not Copy
55
Universal number#
Q'ty
100
100
100
400
400
400
100
100
100
100
100
100
100
100
100
100
200
100
300
VX1935wm-3
8. Exploded Diagram and Exploded Parts List
ViewSonic Corporation
Confidential - Do Not Copy
56
VX1935wm-3
EXPLODED PARTS LIST (VX1935wm-3)
ViewSonic Model Number: VS11444
Rev: 1a
Serial No. Prefix: QCX
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
A
B
C
D
E
F
G
H
ViewSonic P/N
C-00008190
E-00008016
B-00008171
B-00008169
CB-00008071
N/A
N/A
N/A
E-00008137
C-00008191
N/A
C-00008187
C-00008188
B-00008170
CB-00008072
N/A
PL-00008048
C-00008189
HW-00005269
HW-00005270
N/A
N/A
N/A
N/A
N/A
N/A
ViewSonic Corporation
Ref. P/N
714030007910R
631102090600R
790741400600R
790741300600R
430303000690R
701000002300R
505040503100R
505040503400R
618100200120R
714050007910R
503040000310R
501020210410R
501020210510R
790741500000R
430300800800R
502080000110R
714010007910R
714020007910R
509146305300R
509000000700R
509146306102R
509146304200R
509116608510R
509112308100R
509112340100R
509116606510R
Description
ASSY, BEZEL,LP1909
LCD PANEL 19" MT190AW01-V0-G1,AM19000040
PCBA,P/I BOARD, LP1909-612
PCBA,I/F BOARD, LP1909-612
HRN LVDS FFC 30P 158mm, ROHS
ASSY, CHASSIS, LP1909
INSULATOR, PP, 22*20*0.3mm, GLUE(3M)
INSULATOR, PP, 10*15*10*0.3mm, GLUE(4M)
SPEAKER 2.0W 8Ω 370mm, R/G/B W/CASE
ASSY, BACK COVER, LP1909
RUBBER, COVER,(B),LE1534
COVER, HINGE-L,LP1909
COVER, HINGE-R,LP1909
PCBA,KEYPAD BOARD, LP1909
HRN ASS'Y 8P 200mm UL1571#28 ROHS
SUPPORT,HINGE,LP1909
ASSY,STAND,LP1909
ASSY,BASE,VX1935,LP1909
SCREW,PW,CROSS,W/WAS,M3*5,NI
BOLT,#4-40*11.8,NI
SCREW,P,CROSS,W/W-SPR,,M3*6,Zn,ROHS
SCREW,P,CROSS,W/WAS,M3*4,Zn-Cc,ROHS
SCREW,P,CROSS,M4*8,BLACK,NL(NYLOK)
SCREW,P,CROSS,T3*8, Zn
SCREW,P,CROSS,T,T3*10,Zn,ROHS
SCREW,P,CROSS,M4*6,BLACK,NL ROHS
Confidential - Do Not Copy
57
Q'ty
1
1
1
1
1
1
1
3
1
1
4
1
1
1
1
1
1
1
4
4
1
4
4
2
1
2
VX1935wm-3
ViewSonic Corporation
Confidential - Do Not Copy
58
VX1935wm-3
PACKING PART LIST (VX1935wm-3)
ViewSonic Model Number: VS11444
Rev: 1a
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
ViewSonic P/N
N/A
N/A
N/A
P-00008179
CB-00008002
A-00005255
P-00008182
C-00008189
P-00008180
CB-00008070
CB-00005254
P-00008178
P-00008032
P-00008177
N/A
N/A
N/A
Ref. P/N
506431000300R
506039004600R
506039005000R
506040010110R
453030300120R
453070800170R
506120303000R
714020007910R
506040010111R
453030300180R
453010100100R
506040010100R
506120302400R
506020012500R
506038004800R
506150002630R
506380002100R
ViewSonic Corporation
Location
FILM, PE500mm*900M ROHS
CORNER PAPER,2035*50*50*T3mm
CORNER PAPER,870*50*50*T5mm, LE1918
CUSHION, EPS-R,VX1935,LP1909
CABLE,AUDIO 1P 6FT BLACK/GREEN CP03B06P0
PWRCORD 10A/250V BLK 6FT CHINA.RVV 3Gx0.
BAG,EPE+PE,W330*L300*T0.3mm,CYCLE PRINTED LP1909
ASSY,BASE,VX1935,LP1909
CUSHION, EPS-TOP,VX1935,LP1909
CABLE,DVI-D 18+1P MALE 6FT PC99(BLACK)SA
CABLE,D-SUB 15P MALE 6FT BLACK/BLUE,SZ40
CUSHION,EPS-L,VX1935,LP1909
BAG,EPE+PE,L540*W500*T0.05mm,PRINTED,LE1939
CARTON,VIEWSONIC(VX1935),LP1909
CARDBOARD,L1150*W1110*T4mm ROHS LP1909
PALLET,L1150*W1110*H120mm,LP1909
TAPE,WRAPPING TYPE(VIEWSONIC), 50mm*75M,LE1708
Confidential - Do Not Copy
59
Q'ty
0.0018
4/56
4/56
1
1
1
1
1
1
1
1
1
1
1
2/56
1/56
0.016
VX1935wm-3
9. Block Diagram
ViewSonic Corporation
60
Confidential - Do Not Copy
VX1935wm-3
10. Schematic Diagrams
Layout guide :
1. Tie the I.C. pin 1,2,3,18,19,20 to ground with a
large copper pour (open mask layer)
2
VAROUT_L
4
GND
GND
10u/25V
5K1
R701
+
+
+
13
VS
VAROUT_R
C707
470u/16V
+
1K
VOLUME
7
R
4
3
2
1
C713
4700p/50V
2.2K
R712
C712
4700p/50V
C711
R711
Q701
PMBT3904
1
STBY
SVR
L
CN701
4P 2.0mm
2
MUTE
R707
3
2
R708
27K
2.2K
Q703
PMBT3904
1
3
5K6
R706
47K
9
MUTE
14
R710
10
R704
10K
S_GND
OUTR
1K
8
INR
12
R709
1
OUTL
0.1/50V
10K
INL
C705
470u/16V
C709
C706
0.47/16V
600Ω
+14V
2
5
U701
TDA7496SA
220u/16V
R703
6
C704
0.47/16V
10K
C702
470u/25V
C701
Line_R
+14V
R705
27K
R702
+
C703
0.1/50V
3
FB701
Line_L
2,3
11
15
2
3
4
5
1
+14V
NC
P701
AUDIO IN
+14V
R713
5K6
R714
100
3
+14V
VOL_C
1
Q702
PMBT3904
ViewSonic Corporation
2
2
Model
Title
Date
ViewSonic Corporation
61
Confidential - Do Not Copy
VX1935wm-3
Audio
Rev:
2
1
ADJ
VOUT
+
+
C104
0.1/50V
C102
C103
0.1/50V
C101
VCC3.3
U102
FS8860-18PJ
VIN
VOUT
VCC1.8
2
1
2
3
4
5
6
7
8
VCC5V
VCC5V
R108
4K7
ON/OFF
SBRI
ON/OFF
R110
4K7
VOL_C
MUTE_C
CCFL_ENABLE
1
Q106
PMBT3904
22u/25V
+
C106
0.1/50V
C105
1
VCC5V
CN101
4500-06
VCC1.8
ADJ
3
VCC3.3
VLCD
VLCD 4
R107
390
R163
1
3 Q105
PMBT3906
1K
2
R191
4K7
R106
10K
+
LED_G_C
VCC3.3
C109
0.1/50V
2
C111
10u/25V
C108
2
Q103
PMBT3904
1
LED_G//LED_O
+
3
20K
220u/16V
2
3 R197
1
R102
Q110
2N7002
1
PANEL_ENABLE
R105
4K7
Q101
AP2305GN
100K
0.1/50V
R190
3
51
C107
2
4
From Power &
Inverter
VIN
3
3
VCC3.3
VCC3.3
2
U101
FS8860-33PJ
100u/16V
D101
SKS20-04AT
100u/16V
VCC5V
LED_A//LED_B
R101
390
R162
1
3 Q102
PMBT3906
1K
LED_A_C
CN105
LED_A//LED_B
LED_G//LED_O
1
2
3
4
5
6
7
8
2x4P 2.0mm
From keypad
POWER
MENU_UP//Key_▲
DOWN_EXIT//Key_▼&2
KEY_1
C161
C162
1000p/50V 1000p/50V
ViewSonic Corporation
Model
Title
Date
ViewSonic Corporation
62
Confidential - Do Not Copy
VX1935wm-3
DC to DC
Rev:
CN901
8
7
6
5
4
3
2
1
R901
2K2
8P 1.5mm 90°
3
1
From IF BD
LED901
4
3
TACT-4.3
1
1
2
SW903
4
3
1
2
TACT-4.3
4
3
TACT-4.3
2
POWER
SW904
1
2
4
3
SW905
1
2
4
3
TACT-4.3
TACT-4.3
▼
2
1
2
SW902
▼
SW901
LED Y/B
ViewSonic Corporation
Model
Title
Date
ViewSonic Corporation
63
Confidential - Do Not Copy
VX1935wm-3
Keypad
Rev:
DVI-D_CON
1K
R125
FB101
DDCA_SCL_I 3
R127
100
R129
100
R130
100
R131
100
DDCA_SDA_I 3
R132
100
DDCA_SDA
NC
NC
33p/50V
220p/50V
C123
C124
C125
C126
DDCA_SCL
NC
NC
C121
100
C122
75 1%
R135
2K2
2K2
NC
C120
R136
R137
75 1%
R134
ZD108
5V6
NC
ZD107
5V6
C119
ZD106
5V6
75 1%
ZD105
5V6
R133
ZD101
5V6
120Ω
DET_VGA 3
VSYNC
3
HSYNC
3
9
10
11
12
13
14
15
16
DAT1DAT1+
RX0RX0+
GND
RX5RX5+
GND
RXC+
RXC-
17
18
19
20
21
22
23
24
DAT0DAT0+
SCL_DVI_I
SDA_DVI_I
SCL_DVI
SDA_DVI
3
3
VCC3.3
R123
4K7
DVI5V
R126
R128
DET_DVI 3
100
4K7
3
R124
4K7
RX1RX1+
GND
RX3RX3+
5V
GND
HP
100
100
100
100
R192
R193
R152
R153
Q104
1R103
4K7/NC
HP_CTRL
PMBT3904/NC
DCLK+
DCLK-
2
R122
VCC3.3
1
2
3
4
5
6
7
8
C127 0.1/50V
DETECT
DAT2DAT2+
RX2RX2+
GND
RX4RX4+
SCL
SDA
VS
5V6
60Ω
RIN
3
GNDR
3
GIN
3
GNDG
3
BIN
3
GNDB
3
SOG
3
PC5V_VGA 3
ZD104
FB113
0.047/25V
0.047/25V
0.047/25V
0.047/25V
0.047/25V
0.047/25V
0.047/25V/NC
5V6
16
15
60Ω
100 C112
100 C113
100 C114
100 C115
100 C116
100 C117
470/NCC118
ZD103
14
FB112
R113
R114
R116
R117
R119
R120
R121
5V6
13
60Ω
ZD102
12
FB111
17
11
CN103
DZ11AA1-H5W6-4F
R
1
6
G
2
7
B
3
8
4
9
5
10
VCC3.3
VCC3.3
3
R
B+
BG+
GR+
RCLK+
CLK-
3
3
3
3
3
3
3
3
2
TVS102
BAV99
2
TVS103
BAV99
2
TVS104
BAV99
2
1
1
1
G
B
DETECT
1
2
2
3
TVS112
BAV99
3
1
3
TVS111
BAV99
1
2
3
TVS110
BAV99
1
3
TVS109
BAV99
1
1
3
TVS108
BAV99
2
2
2
3
TVS107
BAV99
1
3
TVS106
BAV99
1
1
TVS105
BAV99
2
2
VCC3.3
TVS101
BAV99
3
10
10
10
10
10
10
10
10
3
R138
R139
R140
R141
R142
R143
R144
R145
3
DAT0+
DAT0DAT1+
DAT1DAT2+
DAT2DCLK+
DCLK-
D103
4K7
4K7
VCC3.3
D102 BAV70
0.1/50V
2
3
8
7
6
5
R151
100
SCL_DVI
SDA_DVI
WP
3
A0
A1
A2
GND
VCC
WP
SCL
SDA
8
7
6
5
R149
R150
VCC
WP
SCL
SDA
1
2
3
4
1
PC5V_VGA
2
VCC3.3
BAV70
U103
R146
R147
R148
C128
0.1/50V
U104
1 A0
2 A1
3 A2
4 GND
DVI5V
C129
4K7
4K7
4K7
3
1
DDCA_SCL
DDCA_SDA
CAT24WC02W
ViewSonic Corporation
CAT24WC02W
Model
Title
Date
ViewSonic Corporation
64
Confidential - Do Not Copy
VX1935wm-3
Input
Rev:
R173
R174
R172
10K
0.1/50V
C151 0.1/50V
C143 0.1/50V
22u/25V
C142
0.1/50V
0.1/50V
C136
C137
8
7
6
5
8
7
6
5
C139
22u/25V
0.1/50V
+
C132
VDVI
0.1/50V
FB106
60Ω
VDDP
C131
VCC3.3
0.1/50V
C140
1u/16V
CN104
FFC-CON
C150
0
+
0.1/50V
R171
0
+
C149
26
REFP
REFM
25
NC
NC
NC
X101
14.31818MHz
R170
VLCD
C138
61
60
59
58
55
54
0.1/50V
LVA2M
LVA2P
LVACKM
LVACKP
LVA3M
LVA3P
FB103
60Ω
VPLL
VDDC
C135
LVA1M
LVA1P
63
62
FB105
60Ω
MUTE_C
VOL_C
SBRI
CCFL_ENABLE
PANEL_ENABLE
HDCP_WP
VCC1.8
VMPLL
0.1/50V
70
69
68
67
65
64
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1K
1K
1K
4.7K
100
100
VCC3.3
C148
LVBCKM
LVBCKP
LVB3M
LVB3P
LVA0M
LVA0P
R164
R165
R166
R167
R168
R181
LED_G_C
LED_A_C
0.1/50V
78
77
74
73
72
71
I2C_MCL
I2C_MDA
C134
LVB0M
LVB0P
LVB1M
LVB1P
LVB2M
LVB2P
HP_CTRL
Key_1
POWER
MENU_UP//key_▲
DOWN_EXIT//Key_▼&2
0.1/50V
94
93
86
85
48
47
1K
1K
1K
1K
1K
R157
R158
R159
R160
R161
+
C147
GPIO_P13
PWM0/GPIO_P26
PWM1/GPIO_P25
GPIO_P12
GPIO_P27/PWM1
PWM2/GPIO_P24
1
2
3
4
22u/25V
42
41
44
43
36
45
46
XOUT
RST
4K7 52
4K7 53
84
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
10u/25V
2
5
11
29
33
50
57
76
79
83
C144
+
VCC5V
MODE[0]
MODE[1]
VCC5V
97
VCTRL
C154 22p/50V
81
XIN
REXT
C153 22p/50V 96
15
BYPASS
SDO
SCZ
SCK
SDI
80
37
38
39
40
0.1/50V
SST25VF010A
R169
390 1%
2
1
6
5
FB104
60Ω
R180
GPIO_P22
GPIO_P23
GPIO_P10/I2C_MCL
GPIO_P11/I2C_MDA
TSUM56AL-1
C152
0.1/50V
C141
AVDD
SO
CS#
SCK
SI
4K7
1
2
3
4
8
7
6
5
92
91
90
89
88
87
U106
VCC
HOLD#
WP#
GND
AVDD
82
66
51
34
GPIO_P07
GPIO_P06
GPIO_P02/SAR3
GPIO_P01/SAR2
GPIO_P00/SAR1
RSTN
VCC3.3
8
7
3
4
VCC3.3
C133
RX2P
RX2N
RX1P
RX1N
RX0P
RX0N
RXCKP
RXCKN
GPIO_P14
GPIO_P16/PWM2
DDCD_SDA
DDCD_SCL
VDDC
VDDC
VDDC
VDDC
32
49
56
75
VDDP
VDDP
VDDP
VDDP
24
98
16
AVDD_ADC
3
4
6
7
9
10
12
13
95
99
100
1
AVDD_PLL
R+
RG+
GB+
BCLK+
CLK2 WP
2 DET_DVI
SDA_DVI_I
SCL_DVI_I
BIN0N
BIN0P
GIN0N
GIN0P
SOGIN0
RIN0N
RIN0P
HSYNC0
VSYNC0
DDCA_SDA/RS232_TX
DDCA_SCL/rs232_RX
GPIO_P15/PWM0
VDDC
VCC3.3
22u/25V
2
2
17
18
19
20
21
22
23
27
28
30
31
35
VDDP
4K7x4
RP103
C145
2
2
2
2
2
2
2
2
GNDB
BIN
GNDG
GIN
SOG
GNDR
RIN
HSYNC
VSYNC
DDCA_SDA_I
DDCA_SCL_I
2 DET_VGA
AVDD_MPLL
2
2
2
2
2
2
2
2
2
2
2
AVDD_DVI
AVDD_DVI
8
14
VDVI VMPLLVPLL AVDD
4K7x4
RP102
1
2
3
4
1
2
3
4
RP101
4K7x4
3
4
C158 1000P/50V
C159 1000P/50V
C160 1000P/50V
U108
I2C_MCL
I2C_MDA
R178 100
R179
8
7
6
5
100
VCC
WP
SCL
SDA
A0
A1
A2
GND
0.1/50V
2
C156
1
C157 1000P/50V
VCC3.3
1
2
3
4
U109
HDCP_WP
AT24C04N
8
7
6
5
VCC
WP
SCL
SDA
A0
A1
A2
GND
AT24C04N/NC
1
2
3
4
ViewSonic Corporation
Model
Title
Date
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Confidential - Do Not Copy
VX1935wm-3
SCALER
Rev:
3 +14V
R502
680
C502
2.2u/25V
C501
470u/25V
3
R503
1K5
1
R504
33
U501
2
Q501
PMBT3904
ZD501
5V6
0.1/50V
C503
R517 10/NC
5V
R505
33
C504
1000p/50V
R506
3M 3KV
C505
T501
1000p/50V SPW-068
1
8
6
2
7
4
3
6
4
5
C508
op1
1
C506
10p/3KV
3
220pF/50V/NC
1
TIMER
GNDA
14
4
DIM
CT
13
5
ISSEN SSTCMP
12
6
VSEN
LCT
11
7
OVPT
ENA
10
8
NC
NC
9
IC501
OZ9938G
U502
1
8
2
7
3
6
4
5
C520
R501
100K 1%
R518
470K 1%
C526
0.1/50V
7
4
C523
10p/3KV
8
220pF/50VNC
3
1
3
2
1
BAV99
C514
2700p/50V
R521
470
3
D504
BAV99
C519
0.1/50V
L
CN502
2P
op2
2
R523
C530
590
op3
R525
3M 3KV
D508 BAV99
2
3
1
R531
3K3 1%
D511 SN4148
op1
D512 SN4148
op2
D513 SN4148
op3
C528
3p/3KV
C525
2200p/50V
3
D509 BAV99
2
1
C527
2700p/50V
1
H
2
L
1
H
2
L
R527
CN503
2P
470
R529
470
3
D507
BAV99
C524
0.068/50V
C518
0.1/50V
2
1
T502
SPW-068
R520
100K 1%
R526
D505
1M
SN4148
C522
1000p/50V
6
AP9971GM
5V
D503
R530
33
C529
1000p/50V
68p/50V
3
C521
15
330p/50V
DRV2
C512
VDDA
0.022/25V
2
H
2
0.1/50V
R532
33
D501
SN4148
3 ON/OFF
C509
3p/3KV
AP9971GM
R535 0
C511
C515
2.2u/25V
R515
NC
16
604K 1%
C510
1000p/50V
PGND
R516
R514
47K 1%
R513
10K 1%
DRV1
1000p/50V
3 BRIGHTNESS
R512
110K 1%
1
1
CN501
2P
470
8
C513
2200p/50V
C516
R509
NC
R511
200K 1%/ NC
L
3K3 1%
R534 0
C507
2.2u/25V
2
D502
BAV99
R510
3 VCC5V
R508
R507
3M3 1% 51K 1%
H
R524
3
7
1
1
CN504
2P
2
R528
390 1%
R533
15K 1%
R519
1M
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Model
Title
Date
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Confidential - Do Not Copy
VX1935wm-3
Interter
Rev:
10R
R827
C805
2200p/400V
DC 380V Max.
1000p/500V
C813
T801
SPW-055
5uH
L802
1
11
1
10
3
2
R812
10K
2
1
ZD801
5V6 NC
+
7
6
GND
CS
FB
BO
4
1
3
2
IC801
LTV817M
C812
220p/50V
NCP1337
C810
0.1/50V
R823
51K 1%
4
3
2
1
R815
12K 1%
R814
1K
PMBT3904 NC
Q802
1
R820
1K
C821
0.1/100V
D806
1N4148
C
R825
1K NC
R826
200R NC
R
A
R818
200
C824
0.1/50V NC
3
1K
R821
14V
ZD804
2
DRV
Vcc
NC
HV
R830
10K
3
R832
1K2
0.1/50V
C811
100p/1KV
C809
RMS
AC 264V
F801
2A/250V
+
IC803
TLV431ALP
R824
3K3 1%
C827
47u/25V
CN801
1
2
3
4
5
6
7
8
N
P801
AC_SKT
60mm 8P
TO SCALER BD CN101
VCC5V
ON/OFF
2
BRIGHTNESS
2
Volume
4
Audio_MUTE
C825
0.1/50V
4
ViewSonic Corporation
Model
Title
Date
ViewSonic Corporation
ZD802
16V NC
R822
5K1 1%
R819
1K
1
R805
0R18 2W
IC802
5
6
7
8
PMBT3906
C823
2200p/400V
3
R811
510K
C801
C802
2200p/250V 2200p/250V
L
+
5
Q803
2
1K
R813
C803
0.47/275V
2
VCC5V
R829
10K
1000u/10V
D805
C818
SRF5-04CT
R817
200R
0.1/50V
C822
47p/1KV
C808
12p/1KV
C826
R810
510K
NTC 5R
RT801
RMS
C807
47u/25V
5uH
L803
1
2
D804
+ A02-LF
R807
1.2K
1
Q801
2PC1815GR
3
330K
R831
AP2761I
Q804
1
R816
100R 1W
+
ZD803
9V1
3
4
R802
330K
AC 264V
8
3
DC
700V
Max.
AC 264V
2
330K
R801
9
DC 700V Max.
10R
R806
470u/25V
C817
3
MUR1100ERL
D802
R809
510K
+ C815
1000u/25V
C820
47u/25V
R833
10K
+14V
D803
UFF80-015CT
10R
1000p/500V
R828
C814
2
1
3
C806
4700p/400V
2
4
AC 264V
L801
20mH
4
R808
510K
+
RMS
3
RMS
2
R803
10K
100u/450V
C804
+ 1
D801
BL4-06
R804
68K 2W
67
Confidential - Do Not Copy
VX1935wm-3
POWER SUPPLY
Rev:
11. PCB Layout Diagrams
ViewSonic Corporation
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Confidential - Do Not Copy
VX1935wm-3
ViewSonic Corporation
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Confidential - Do Not Copy
VX1935wm-3
ViewSonic Corporation
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Confidential - Do Not Copy
VX1935wm-3
ViewSonic Corporation
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Confidential - Do Not Copy
VX1935wm-3
* 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
Excellent
Good
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?
Reader’s basic dada:
Name:
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)
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VX1935wm-3