ViewSonic VX500PLUS-1 User manual

Service Manual
ViewSonic VX500+-1
Model No. VLCDS23897-1W
15” Color TFT LCD Display
(VX500+-1_SM_576-Rev.1a-May 2002)
ViewSonic381 Brea Canyon Road, Walnut, California 91789 USA - [phone]

Copyright
Copyright ¤2002 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
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 Date Description Of Changes Approval
1a 7/31/02 Initial Reversion DCN-2352 K.Yang
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TABLE OF CONTENTS
1. PRECAUTIONS AND NOTICES...............................................................................1
2. SPECIFICATIONS.....................................................................................................2
3.
TIMING CHART........................................................................................................15
4.
FRONT PANEL CONTROLFUNCTION DESCRIPTION........................................21
5.
CIRCUIT DESCRIPTION ........................................................................................31
6.
WAVEFORMS.........................................................................................................37
7.
TROUBLE SHOOTING FLOW CHART...................................................................40
12.SCHEMATIC DIAGRAMS......................................................................................58
10.
EXPLODED PARTS VIEW......................................................................................51
8.
ADJUSTING PROCEDURE....................................................................................46
9.
SPARE PARTS LIST..............................................................................................49
11. BLOCK DIAGRAM..................................................................................................57
13.PCB LAYOUT DIAGRAMS.....................................................................................64

1. PRECAUTIONS AND NOTICES
Prior to using this manual, please ensure that you have carefully followed all the procedures
outlined in the user manual for this product.
zRead all of these instructions.
zSave these instructions for later use.
zFollow all warnings and instructions marked on the product.
zDo not use this product near water.
zThis display should be installed on a solid horizontal base.
zWhen cleaning, use only a neutral detergent cleaner with a soft damp cloth. Do not spray
with liquid or aerosol cleaners.
zDo not expose this display to direct sunlight or heat. Hot air may cause damage to the cabinet
and other parts.
zAdequate ventilation must be maintained to ensure reliable and continued operation and to
protect the display from overheating. Do not block ventilation slots and openings with objects or
install the display in a place where ventilation may be hindered.
zDo not install this display near a motor or transformer where strong magnetism is generated.
Images on the display will become distorted and the color irregular.
zDo not allow metal pieces or objects of any kind fall into the display from ventilation holes.
Slots and openings in the cabinet and the back or bottom are provided for ventilation, to ensure reliable
operation of the product and to protect it from overheating, those openings muse not be blocked or
covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other
similar surface. This product should never be placed near or over a radiator or heat register. This
product should not be placed in a built-in installation unless proper ventilation is provided.
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1. Scope
The following specifications are applicable to model VX500+ 15 inch color LCD monitor.
2. General Description (Quick Reference)
Sanyo 15.0” XGA TFTLCD
Size
Effective Display Size
Pixel Pitch
Resolution
Brightness
Contrast Ratio
Color
Viewing Angle
Surface treatment
15.0 inches diagonal
304.1 mm X 228.1 mm (typical)
0.297 mm X 0.297 mm
1024 x 768 dot (XGA)
(300) cd / m² (typ.), 230 min.
(500): 1(typ.), 300 min.
16.7M
135° Horizontal (typ)
125° Vertical (typ)
CR>10:1
Anti-Glare
Input Signals RGB
Digital
Analog 0.7 Vp-p / 75Ө
Separate sync.
Composite sync
Sync-On-Green
TMDS.
Positive Polarity
TTL level
Input connector Analog mini D-sub 15 pin x 1
Digital DVI-D x 1
Audio mini-din 2 channel x 2
Micro-phone jack
Speaker2Wx2(Max)
Main IC GM5010
DisplayColors16.7 million colors
Preset Timings XGA/60Hz, 70Hz, 75Hz
SVGA/56Hz, 60Hz, 72Hz, 75Hz
VGA/60Hz, 72Hz, 75Hz
Dos-text/70Hz
Synchronization Horizontal
Vertical
Non-interlaced
30 kHz to 62 kHz
50 Hz to 75 Hz
Max Pixel Rate 85Mhz
(automatically)
(automatically)
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2.SPECIFICATIONS

Resolution Horizontal
Vertical
1024 dots
768 lines
Active Display
Area
Horizontal
Vertical
304.1 mm (typical)
228.1 mm (typical)
(Active display area is dependent upon signal timings)
Power Supply
Rating
AC adapter input
DC input
AC90V-264V 50 / 60 Hz
DC 12V
AC Power
Consumption
38W
less than 2W
On mode
Off mode (w/o audio cable connected )
Current Rating AC input
DC input
0.7A
4.0A
@AC 100-240V
@DC 12.0V
Dimensions Net
Gross
360 (W) x 342 (H) x 139.5 (D) mm
476 (W) x 414 (H) x 222 (D) mm
Weight Net
Gross
3.9Kg
5.9Kg
Environmental
Conditions
Operating Temperature
Operating Humidity
Storage Temperature
Storage Humidity
0 to 40°C (PANEL SURFACE)
10 to 95% (no condensation, < wetbulb 29 degree C)
-20 to 60°C (PANEL SURFACE)
10 to 95% (no condensation, < wetbulb 29 degree C)
Accessories AC power cord-UL
AC power cord-Schuko
Analog VGA cable
DVI-D cable
Audio cable
Micphone cable
Viewsonic CD-Wizard
1.8m
1.8m
1.8m
1.8m
1
1
1
Regulatory
Standards
UL, CSA or cUL, CB Report, CE, FCC-B, DOC-B, TÜV/Ergo (which covers
ISO13406-2 and MPRIII), TUV/GS, PCT (GOST-R) with 20 Hygienic
certificates, PCBC (B Mark), SEMKO, DEMKO, FIMKO, NEMKO, BSMI,
VCCI, CCIB/EMC, CCC, PSB (Singapore Safety), TCO’99, NOM and
Argentina IRAM (thru TUV).
Osd Language English, French, German, Spanish, Italian, Finnish
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Others Tilt Angle 20° up / 5° down
Power Saving System
User Control by touch sensor keypad with On Screen Display-
VESA DDC1/2B compatible (digital port DDC2B only)
3. Electrical Characteristics
3.1 Power Supply
3.1.1 AC Input (AC Adapter)
Input Voltage AC90-264V
Frequency 47 / 63Hz
Power Consumption:
38 W (typ) on mode
less than 2W power save mode ( audio cable not
connected )
Current Rating 0.7A @ AC100-240V
3.1.2 DC Input
Input Voltage DC 12 V
CurrentRating 4.0A
3.2 LCD
LCD Torisan (TM150XG-26L06A)
Effective display size 304.1mm (H) x 228.1 mm (V)
15.0” / 38 cm diagonal
Pixel number 1024 x 768 pixels
Color filter arrangement R.G.B. vertical stripe
Display method TFT, normally white
Drive method Active matrix (TFT)
Dot pitch 0.099 (H) x 0.297 (V) mm
Pixel pitch 0.297 (H) x 0.297 (V) mm
Dot number 1024 x 768 x 3 dots
Backlight Edge-lighting type with 4 CCFLs
(Cold Cathode Fluorescent Tube)
Brightness 230 cd / m2 (min)
Contrast ratio 300:1 (min)
Display color 16.7 million
Minimum viewing angle 110° Horizontal (min) 100° Vertical (min)
(Contrast ratio>10 at Ta=25°C, 77°F)
Response time 25 msec (Typical at 25 degree C)
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3.3 Interface Signals
3.3.1 RGB Video Signals
3.3.1.1 Separate Sync. Signals
Analog R, G, B 0 - 0.7 Vp-p
Signal Level 75Ө± 5%
Sync Level TTL level
Sync Polarity independent
3.3.1.2 Sync On Green, Composite Sync
3.3.2 TMDS digital Signals
3.3.2.1 Video type
DVI 1.0 compliant
3.3.3 Audio spec.
3.3.3.1 Line input connection
3.5 mm stereo jack x 1
3.3.3.2 Line input signal & impedance
1.0 Vrms, 10 kOhm
3.3.3.3 OUTPUT SIGNAL AT SPEAKER TERMINAL
Vp-p(out) >= 5 Vp-p @ < 10 % distortion
3.3.3.4 Frequency Response
300 Hz – 20 Khz
3.3.3.5 Connector PC99 requirement Audio in
Lime Green pantone # 577C
3.3.3.6 Cable length
1.8 m
3.3.3.7 Audio DPMS
Speakers stay on when the rest of the monitor is in power saving.
3.3.3.8 Speakers
Impedance 4 Ohm
Output Wattage 2W (max.) x 2
3.3.4 Input Signal Connectors
3.3.4.1 Analog RGB Video Input : 15 pin mini D-sub
PIN NO. Separate Sync
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1 RED
2 GREEN
3 BLUE
4 GROUND
5 GROUND
6 GROUND
7 GROUND
8 GROUND
9 +5V
10 GROUND
11 N.C
12 SDA
13 H.SYNC
14 V.SYNC
15 SCL
15
10
5 1
6
11
3.3.4.2 Digital TMDS DVI-D Connector
24 PIN DVI-D CONNECTOR PIN ASSIGNMENT
Pin No. Signal Name Description
1 RX2- TMDS negative differential input, channel 2
2 RX2+ TMDS positive differential input, channel 2
3 GND Logic Ground
4 Reserved 4 Reserved. No connection
5 Reserved 5 Reserved. No connection
6 DDC-CLK DDC2B Clock
7 DDC-DAT DDC2B Data
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8 Reserved 8 Reserved. No connection
9 RX1- TMDS negative differential input, channel 1
10 RX1+ TMDS positive differential input, channel 1
11 GND Logic Ground
12 Reserved 12 Reserved. No connection
13 Reserved 13 Reserved. No connection
14 VCCX Power
15 GND Logic Ground
16 SENS SENSE Pin, Pull High
17 RX0- TMDS negative differential input, channel 0
18 RX0+ TMDS positive differential input, channel 0
19 GND Logic Ground
20 Reserved 20 Reserved. No connection
21 Reserved 21 Reserved. No connection
22 GND Logic Ground
23 RXC+ TMDS positive differential input, reference clock
24 RXC- TMDS negative differential input, reference clock
3.3.4.3 Audio Connector
3.5 mm Stereo jack x 1,
3.5mm Microphone jack x 1
3.3.5 Signal Timing
3.3.5.1 User Timing Mode memory
always do auto image adjust after timing mode change
3.3.5.2 Timing mode Change
maximum time for mode Change with auto image adjust 7 sec.
3.3.5.3 Signal Timing Table
The factory test input video signal is defined as the following table:
Preset H.sync V.sync SYNC POL. Video Mode Description
No. Frequency Frequency H-SYNC V-SYNC
MOD [1] 31.468 1.0KHz 70.0 1.0Hz + - 640X350(70) Text mode
MOD [2] 31.468 1.0KHz 70.0 1.0Hz - + 720X400(70) Dos text
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MOD [3] 31.468 1.0KHz 59.94 1.0Hz - - 640X480(60) VESA STANDARD
MOD [4] 35.01 1.0KHz 66.67 1.0Hz - - 640X480(66) MAC
MOD [5] 37.86 1.0KHz 72.81 1.0Hz - - 640X480(72) VESA STANDARD
MOD [6] 37.5 1.0KHz 75.0 1.0Hz - - 640X480(75) VESA STANDARD
MOD [7] 35.16 1.0KHz 56.25 1.0Hz + + 800X600(56) VESA STANDARD
MOD [8] 37.88 1.0KHz 60.32 1.0Hz + + 800X600(60) VESA STANDARD
MOD [9] 48.077 1.0KHz 72.19 1.0Hz + + 800X600(72) VESA STANDARD
MOD [10] 46.875 1.0KHz 75.0 1.0Hz + + 800X600(75) VESA STANDARD
MOD [11] 49.72 1.0KHz 74.5 1.0Hz - - 832X624(75) MAC
MOD [12] 48.363 1.0KHz 60.0 1.0Hz - - 1024X768(60) VESA STANDARD
MOD [13] 58.01 1.0KHz 72.08 1.0Hz - - 1024X768(72) VESA STANDARD
MOD [14] 60.023 1.0KHz 75.0 1.0Hz + + 1024X768(75) VESA STANDARD
3.4 Luminance Control
Analog signal (6500K)
over 200 cd / m2(@ Cont/Bright max)
Digital signal (6500K)
over 200 cd / m2(@ Cont/Bright max)
3.5. Synchronization
Horizontal: 30 to 62 kHz
Vertical: 50 to 75 Hz Non-interlaced
Maximum 75Hz @ 1024 x 768 mode
Recommended 60Hz @ 1024 x 768 mode
3.6 Display Characteristics
3.6.1 Picture Size
Horizontal Width 304.1 mm (typical)
Vertical Width 228.1 mm (typical)
3.6.2 Optical Characteristics
General qualities: The following data was measured by BM7 of TOPCON
data are panel optical data, for analog signal there are +- 5% tolerance.
Item Code Conditions Min. Typ. Max. Unit
Contrast CR WhiteϕBlack at Image
Center
300 (500) ҥҥ
White
BrightnessȀ
L
VMAX
Whole White 230 (300) ҥcd / m2
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Uniformity of
Brightness
Bmin
Bmax
70 ҥҥ %
Response
At 25
degree
Tpd All White ҳAll Black
All Black ҳAll White
ҥ5
20
ҥms
ms
Right
ӘRCenterȀCRҨ10 60 70
ҥDegree
Viewing Left ӘL60 70
ҥDegree
Angle Up
ӥH40 55
ҥDegree
Down
ӥL50 65
ҥDegree
Luminance
control
All White (digital signal
or analog 6500k)
Brightness at center of
display surface
>=200 (cont / bright
backlight max)
Cd / m2
These characteristics were measured under the following conditions:
Temperature: 77 ± 6°F, 25 ± 5°C
Viewing angle: AU = 0°, AR = 0°
Warm Up time: minimum 30 minutes
Measuring instrument: TOPCOM BM-7 Luminance Meter
Measuring distance: 500 mm
Measuring angle: 2°
BM-7
500mm
2 De
g
ree
Notes:
(Note 1) Contrast ratio is defined as the following formula.
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Contrast ratio =
Brightness(Luminance) with all pixels at "w h i t e "
Bri
g
htness with all
p
ixels at "
b
lack"
(Note 2) Viewing angle is measured as follows:
Ǿ*
ǰ4
ǰ.
Ǿ.
ǰ .ࠑ
:
QENQEM
;’
Ǿ .ࠑ
QENQEM
Ǿ *ࠑ
;
:’
ǰ 4ࠑ
0QTOCN
Ǿࠑǰࠑ
(Note 3) Definition of response time is as follows:
Response time is measured when the display data is changed from white to
black.
100ҡ
90㧑
10ҡ
0㧑
TF
TR
Optical
Response
White
White(TFT OFF) Black(TFT ON) White(TFT OFF)
(Note 4) Judge points for brightness uniformity
Brightness uniformity is judged at five (9) points on display area:
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(9)
(3)
(5)
(7)
(1)
128 512 896
98
384
670
(6)
(2)
(4)
(8)
BUNI 㧩
Bmin
Bmax
Bmax:MaximumBrightness
Bmin:MinimumBrightness
3.6.3.
LCD Panel
Mechanical
Active Area (mm) 304.1 x 228.1
Pixel pitch (mm) 0.297 (0.099x3)
Mass typical (g) 1250
Panel dimensions (WxDxH) mm 332x255x13 mm (typ)
Resolution 1024 x 768
Panel Model number TM150XG-26L06A (15” TFT)
Panel Interfaces TTL
Optical performance
Contrast ratio (500): 1 Typical
300: 1 Minimum
Luminance of white (center) 300 nits Typical
230 nits Minimum
White Uniformity 70% (9 points measurement)
Chromaticity values (red, green, blue) center ‘x = +/- 0.050
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‘y = +/ - 0.050
Color temperature ‘x = 0.323 +/- 0.050
‘y = 0.337 +/- 0.050
Viewing Angle H, V (CR >10) 90, and V = 120 (Min)
Film Do not use wide viewing film
Response time ms Typical Tr = 5ms; Tf = 205ms
Number of Back Light (CCFL) 4 – Edge type back light
Backlight (hrs) 50,000 hours Min
3.7 Power Management
The VX500+ will enter power saving mode under the following conditions:
Power Management condition and status
State Signals Power Video LCD LED
Horizontal Vertical Video Supply Circuit
On Pulses Pulses Active On On On Green
Stand-by No Pulses Pulses Blanking Off Off Amber
Suspend Pulses No
Pulses
Off No Pulses No
Pulses
Complete N/A N/A N/A Off Off
3.8 FullScan Capability
When the input display mode is not 1024x768, the image area is changed as
follows:
Flex Scan Input display Expanded Rate Expanded
Mode Mode Resolution Horizontal Vertical Resolution
Expansion 1 640x350 2 2.93 1024x 768
Expansion 2 640x400 2 2.56 1024x 768
Expansion 3 640x480 2 2.13 1024x 768
Expansion 4 720x400 1.78 2.56 1024x 768
Expansion 5 800x600 1.6 1.71 1024x 768
Expansion 6 832x624 1.54 1.6 1024x 768
Standard 1024x768 1.25 1.33
1024x 768
ȀȀȀȀ
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4. Mechanical Characteristics
4.1 Dimensions
Net: 360 (W) x 342 (H) x 135 (D) mm
Gross: 476 (W) x 414 (H) x 222 (D) mm
4.2 Weight
Net: 3.9Kg
Gross: 5.9Kg
4.3BaseRotation
Tilt: up 20 ° / down 5 °
5. Packaging
5.1 Carton Box
Dimensions: 476(W) x 414(H) x 222(D) mm
Color: 4-Color printing box
Material: BC-FLUTE or Equivalent, double wall
6. Environmental Characteristics
6.1 Operating Conditions
Temperature: 0 Through + 40° C
Humidity: 10% to 95% (39 degree welt bulb)
Altitude: 0 – 3,000 meter
6.2 Non-operating Conditions
Temperature: -20 through +60 ° C
Humidity: 10% to 95% (39 degree welt bulb)
Altitude: 0 – 12,000 meter
7. Factory setting
7.1 OSD
Brightness 100%(based on 0-100%)
Contrast 80%(based on 0-100%)
AutoTune Executed
Color Temperature 6500k
Volume 50%
Balance 50%
Bass/Treble 50%
OSD Timeout 15 Sec
Language English
OSD position Center
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Scaling Fill all
7.2PowerSwitch OFF

Preset Signal Timings
H total
H pulseH front H back
Horizontal
V total
V pulse
V front V back
V active
Vertical
H-Video
H active
V-Video
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Analog timing mode table
Mode 1 2 3 4 5
Signal name symbol text Dos-text VGA MAC 14" VGA
H-frequency (khz) 31.468 31.468 31.468 35 37.862
V-frequency (hz) 70.087 70.077 59.941 66.667 72.807
Pixel rate (mhz) 25.175 28.327 25.175 30.24 31.501
H-sync Ths 96 108 96 64 40
H-back porch Thb 48 54 48 96 128
H-total Thd 800 900 800 864 832
H- front porch Tv 16 18 16 64 24
V-sync Tvs 2 2 2 3 3
V-back porch Tvb 60 35 33 39 28
V-total Tvd 449 449 525 525 520
V-front porch Tvf 37 12 10 3 9
H-sync. Polarity Positive Negative Negative Negative Negative
V-sync Polarity Negative Positive Negative Negative Negative
H-resolution (dots) 640 720 640 640 640
V-resolution (lines) 350 400 480 480 480
Mode 6 7 8 9 10
Signal name symbol VGA VESA-VGA SVGA SVGA SVGA
H-frequency (khz) 37.5 43.269 35.156 37.879 48.077
V-frequency (hz) 75 85.005 56.25 60.317 72.188
Pixel rate (mhz) 31.5 36.000 36 40 50
H-sync Ths 64 56 72 128 120
H-back porch Thb 120 80 128 88 64
H-total Thd 840 832 1024 1056 1040
H- front porch Tv 16 56 24 40 56
V-sync Tvs 3 3 2 4 6
V-back porch Tvb 16 25 22 23 23
V-total Tvd 500 509 625 628 666
V-front porch Tvf 1 1 1 1 37
H-sync. Polarity Negative Negative Negative Positive Positive
V-sync Polarity Negative Negative Negative Positive Positive
H-resolution (dots) 640 640 800 800 800
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3.TIMING CHART

V-resolution (lines) 480 480 600 600 600
Mode 11 12 13 14 15
Signal name symbol SVGA SVGA MAC 16" XGA XGA
H-frequency (khz) 46.875 53.674 49.725 48.363 56.476
V-frequency (hz) 75 85.061 74.5 60.004 70.069
Pixel rate (mhz) 49.5 56.250 57.283 65 75
H-sync Ths 80 64 64 136 136
H-back porch Thb 160 152 224 160 144
H-total Thd 1056 1048 1152 1344 1328
H- front porch Tv 16 32 32 24 24
V-sync Tvs 3 3 3 6 6
V-back porch Tvb 21 27 39 29 29
V-total Tvd 625 631 667 806 806
V-front porch Tvf 1 1 1 3 3
H-sync. Polarity Positive Positive Negative Negative Negative
V-sync Polarity Positive Positive Negative Negative Negative
H-resolution (dots) 800 800 832 1024 1024
V-resolution (lines) 600 600 624 768 768
Mode 16 17 18
Signal name symbol XGA XGA XGA
H-frequency (khz) 58.099 60.023 68.677
V-frequency (hz) 72.082 75.029 84.997
Pixel rate (mhz) 78.084 78.75 94.500
H-sync Ths 136 96 96
H-back porch Thb 160 176 208
H-total Thd 1344 1312 1376
H- front porch Tv 24 16 48
V-sync Tvs 6 3 3
V-back porch Tvb 29 28 36
V-total Tvd 806 800 808
V-front porch Tvf 3 1 1
H-sync. Polarity Negative Positive Positive
V-sync Polarity Negative Positive Positive
H-resolution (dots) 1024 1024 1024
V-resolution (lines) 768 768 768
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Mode 21
Signal name symbol 720P
H-frequency (khz) 45.000
V-frequency (hz) 60.00
Pixel rate (mhz) 74.250
H-sync Ths 40
H-back porch Thb 270
H-total Thd 1658
H- front porch Tv 60
V-sync Tvs 5
V-back porch Tvb 20
V-total Tvd 750
V-front porch Tvf 5
H-sync. Polarity Negative
V-sync Polarity Negative
H-resolution (dots) 1280
V-resolution (lines) 720
Digital timing mode table
Mode 1 2 3 4 5
Signal name symbol text Dos-text VGA VGA VGA
H-frequency (khz) 31.468 31.468 31.468 31.468 37.862
V-frequency (hz) 70.087 70.077 60.000 59.941 72.807
Pixel rate (mhz) 25.175 28.327 25.175 25.175 31.501
H-sync Ths 96 108 96 96 40
H-back porch Thb 48 54 48 48 128
H-total Thd 800 900 800 800 832
H- front porch Tv 16 18 16 16 24
V-sync Tvs 2 2 2 2 3
V-back porch Tvb 60 35 35 33 28
V-total Tvd 449 449 449 525 520
V-front porch Tvf 37 12 10 10 9
H-sync. Polarity Positive Negative Negative Negative Negative
V-sync Polarity Negative Positive Negative Negative Negative
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